CN115514259A - A control method for a steelmaking converter fire damper - Google Patents
A control method for a steelmaking converter fire damperDownload PDFInfo
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- CN115514259A CN115514259ACN202211124283.1ACN202211124283ACN115514259ACN 115514259 ACN115514259 ACN 115514259ACN 202211124283 ACN202211124283 ACN 202211124283ACN 115514259 ACN115514259 ACN 115514259A
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more AC dynamo-electric motors
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
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Abstract
Description
Translated fromChinese技术领域technical field
本申请涉及冶金技术领域，特别地，涉及一种炼钢转炉挡火门的控制方法。The present application relates to the technical field of metallurgy, and in particular, relates to a method for controlling a fire damper of a steelmaking converter.
背景技术Background technique
炼钢转炉炉前挡火门是炼钢转炉冶炼防止钢水喷溅伤人的炉前防护装置，挡火门打开时，进行兑铁、清理炉嘴、更换滑板等工作；挡火门关闭时，才能进行摇炉、吹炼等操作。挡火门分为1号门和2号门两扇门，当挡火门关闭时，1号挡火门向右运行，2号挡火门向左运行，到达转炉中间位置停止。由于转炉炉前及周边环境差，安装关闭限位容易造成烫伤损坏，而其他测距、卷筒限位相对费用较高，而依靠人观察到位情况总是不能关严，或者关闭不及时造成大冲击。因此设计此方法，既能自动控制挡火门关闭停止，又能关闭严密。The front fire door of the steelmaking converter is a protective device in front of the steelmaking converter to prevent molten steel from splashing and hurting people. When the fire door is opened, work such as mixing iron, cleaning the furnace nozzle, and replacing the slide plate is carried out; when the fire door is closed, In order to carry out shaking furnace, blowing and other operations. The fire door is divided into No. 1 door and No. 2 door. When the fire door is closed, the No. 1 fire door runs to the right, and the No. 2 fire door runs to the left, and stops when it reaches the middle position of the converter. Due to the poor environment in front of and around the converter, the installation of the closing limit is likely to cause burns and damage, while other distance measurement and reel limits are relatively expensive, and the situation cannot always be closed tightly depending on human observation, or the closure is not timely. shock. Therefore design this method, both can automatically control the fire damper to close and stop, and can close tightly again.
发明内容Contents of the invention
本申请的目的在于提供一种炼钢转炉挡火门的控制方法，进而既能在无关闭限位的情况下，既能控制挡火门关闭到位时自动停止快速，又能关闭严密，且使得挡火门变频器又不产生大电流，降低对电机和变频器造成的冲击，降低设备投入费用。The purpose of this application is to provide a control method for the fire damper of a steelmaking converter, which can not only control the fire damper to automatically stop quickly when it is closed in place without closing the limit position, but also close tightly, and make the The frequency converter of the fire damper does not generate a large current, which reduces the impact on the motor and the frequency converter and reduces equipment investment costs.
本申请的其他特性和优点将通过下面的详细描述变得显然，或部分地通过本申请的实践而习得。Other features and advantages of the present application will become apparent from the following detailed description, or in part, be learned by practice of the present application.
根据本申请实施例的一个方面，提供了一种炼钢转炉挡火门的控制方法，所述炼钢转炉包括驱动第一挡火门的第一电机、驱动第二挡火门的第二电机、控制第一电机工作的第一变频器、控制第二电机工作的第二变频器，以及控制第一变频器和第二变频器工作的控制器，所述方法包括：控制器接收关门信号，根据所述关门信号分别发送关闭命令至第一变频器和第二变频器；所述第一变频器根据所述关闭命令控制第一电机工作，所述第二变频器根据所述关闭命令控制第二电机工作，所述控制器分别对所述第一电机和所述第二电机计时；到达预设时间后，所述第一挡火门和所述第二挡火门闭合到位，所述控制器通过所述第一变频器控制所述第一电机停止，以及通过所述第二变频器控制所述第二电机停止；若其中一个电机运行时间先到达预设时间，则所述控制器通过所述其中一个电机对应的变频器控制所述其中一个电机停止，另一个电机运行时间未到达预设时间，所述控制器获取所述另一个电机对应的变频器的励磁电流给定与励磁电流反馈，根据所述励磁电流给定与励磁电流反馈来控制所述另一个电机停止。According to an aspect of the embodiment of the present application, a method for controlling a fire damper of a steelmaking converter is provided, the steelmaking converter includes a first motor driving a first fire damper, a second motor driving a second fire damper , a first frequency converter that controls the operation of the first motor, a second frequency converter that controls the operation of the second motor, and a controller that controls the operation of the first frequency converter and the second frequency converter, the method includes: the controller receives a door closing signal, Send closing commands to the first frequency converter and the second frequency converter respectively according to the door closing signal; the first frequency converter controls the operation of the first motor according to the closing command, and the second frequency converter controls the second frequency converter according to the closing command The two motors work, and the controller counts the first motor and the second motor respectively; when the preset time is reached, the first fire damper and the second fire damper are closed in place, and the control The controller controls the first motor to stop through the first frequency converter, and controls the second motor to stop through the second frequency converter; if the running time of one of the motors reaches the preset time first, the controller through the The frequency converter corresponding to one of the motors controls the one of the motors to stop, and the running time of the other motor does not reach the preset time, and the controller obtains the given excitation current and the excitation current of the frequency converter corresponding to the other motor Feedback, controlling the other motor to stop according to the given excitation current and the feedback of the excitation current.
在一些实施例中，所述炼钢转炉还包括第一门开限位和第二门开限位，在所述控制器接收关门信号，根据所述关门信号分别发送关闭命令至第一变频器和第二变频器之前，所述方法还包括：所述第一挡火门处于第一门开限位，所述第二挡火门处于第二门开限位。In some embodiments, the steelmaking converter further includes a first door opening limit and a second door opening limit, the controller receives a door closing signal, and sends a closing command to the first frequency converter respectively according to the door closing signal Before the second frequency converter, the method further includes: the first fire door is at a first door opening limit, and the second fire door is at a second door opening limit.
在一些实施例中，在所述若其中一个电机运行时间先到达预设时间，所述控制器通过所述其中一个电机对应的变频器控制所述其中一个电机停止，另一个电机运行时间未到达预设时间，所述控制器获取所述另一个电机对应的变频器的励磁电流给定与励磁电流反馈，根据所述励磁电流给定与励磁电流反馈来控制所述另一个电机停止中，所述方法还包括：若所述第一电机或和/或所述第二电机对应的变频器无法驱动故障电机工作时，或人为控制所述第一电机停止和/或所述第二电机停止时，则所述控制器对所述第一电机或和/或所述第二电机计时暂停；所述第一电机和/或所述第二电机恢复运行时，则所述控制器对所述第一电机或和/或所述第二电机继续计时；其中一个电机先到达其对应的预设时间后，控制先到达预设时间的所述其中一个电机停止运行。In some embodiments, if the running time of one of the motors reaches the preset time first, the controller controls the one of the motors to stop through the frequency converter corresponding to one of the motors, and the running time of the other motor does not reach At a preset time, the controller acquires the excitation current setting and excitation current feedback of the frequency converter corresponding to the other motor, and controls the other motor to stop according to the excitation current setting and excitation current feedback. The method further includes: if the frequency converter corresponding to the first motor and/or the second motor cannot drive the faulty motor to work, or when the first motor is artificially controlled to stop and/or the second motor stops , then the controller suspends the timing of the first motor and/or the second motor; when the first motor and/or the second motor resumes running, the controller One motor or and/or the second motor continues timing; after one of the motors reaches its corresponding preset time first, the one of the motors that first reaches the preset time is controlled to stop running.
在一些实施例中，在所述其中一个电机先到达其对应的预设时间后，控制先到达预设时间的所述其中一个电机停止运行之后，所述方法还包括：所述控制器获取未到达预设时间的另一个电机对应的变频器的励磁电流反馈和励磁电流给定；所述控制器根据所述励磁电流反馈与所述励磁电流给定，控制所述另一个电机对应的挡火门停止运行。In some embodiments, after one of the motors reaches its corresponding preset time first, after controlling the one of the motors that reaches the preset time first to stop running, the method further includes: the controller acquires the The excitation current feedback and excitation current setting of the inverter corresponding to another motor that reaches the preset time; the controller controls the fire stop corresponding to the other motor according to the excitation current feedback and the excitation current setting. The door stopped working.
在一些实施例中，在控制器根据所述励磁电流反馈与所述励磁电流给定，控制所述另一个电机对应的挡火门停止运行中，所述方法还包括：获取所述励磁电流反馈与所述励磁电流给定的差值绝对值；所述差值绝对值除以所述励磁电流给定获得目标值；当所述目标值大于第一预设阈值时，所述控制器控制所述另一个电机以及所述另一个电机对应的挡火门停止运行。In some embodiments, when the controller controls the fire damper corresponding to the other motor to stop running according to the excitation current feedback and the excitation current setting, the method further includes: obtaining the excitation current feedback The absolute value of the difference with the given excitation current; the absolute value of the difference is divided by the given excitation current to obtain a target value; when the target value is greater than the first preset threshold, the controller controls the The other motor and the fire damper corresponding to the other motor stop running.
在一些实施例中，所述第一预设阈值为10％。In some embodiments, the first preset threshold is 10%.
在一些实施例中，所述预设时间为11秒。In some embodiments, the preset time is 11 seconds.
由以上本申请的技术方案，与现有技术相比，其显著的有益效果在于：由于转炉炉前及周边环境差，安装关闭限位容易造成烫伤损坏，而其他测距、卷筒限位等设备相对费用较高，而依靠人观察到位情况总是不能关严，或者关闭不及时造成大冲击，对电机或变频器造成损害。因此在不增加任何形式的关闭限位(测距设备、卷筒限位)的情况下，通过对炉前挡火门运行时间、励磁电流给定、励磁电流反馈、速度反馈进行计算分析，使得挡火门既能关闭严密，又不产生大电流，降低对电机或变频器造成的冲击，降低设备投入费用，既能自动控制挡火门关闭停止，又能关闭严密。From the above technical solution of the present application, compared with the prior art, its significant beneficial effect is: due to the poor environment in front of the converter furnace and the surrounding environment, the installation of the closing limit is easy to cause burn damage, while other distance measuring, reel limit, etc. The relative cost of the equipment is relatively high, but relying on people to observe the situation can not always be closed tightly, or if the closure is not timely, it will cause a large impact, causing damage to the motor or frequency converter. Therefore, without adding any form of closing limit (distance measuring equipment, reel limit), by calculating and analyzing the running time of the fire damper in front of the furnace, given excitation current, excitation current feedback, and speed feedback, the The fire door can be closed tightly without generating high current, which reduces the impact on the motor or frequency converter and reduces equipment investment costs. It can not only automatically control the fire door to close and stop, but also close tightly.
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本申请。It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
附图说明Description of drawings
通过参照附图详细描述其示例性实施例，本申请的上述和其它特征及优点将变得更加明显。The above and other features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings.
图1示出了根据本申请一个实施例的流程图。Fig. 1 shows a flowchart according to an embodiment of the present application.
具体实施方式detailed description
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的范例；相反，提供这些实施方式使得本申请将更加全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concepts of example embodiments to those skilled in the art.
此外，所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施例中。在下面的描述中，提供许多具体细节从而给出对本申请的实施例的充分理解。然而，本领域技术人员将意识到，可以实践本申请的技术方案而没有特定细节中的一个或更多，或者可以采用其它的方法、组元、装置、步骤等。在其它情况下，不详细示出或描述公知方法、装置、实现或者操作以避免模糊本申请的各方面。Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of the embodiments of the application. However, those skilled in the art will appreciate that the technical solutions of the present application may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be employed. In other instances, well-known methods, apparatus, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.
附图中所示的方框图仅仅是功能实体，不一定必须与物理上独立的实体相对应。即，可以采用软件形式来实现这些功能实体，或在一个或多个硬件模块或集成电路中实现这些功能实体，或在不同网络和/或处理器装置和/或微控制器装置中实现这些功能实体。The block diagrams shown in the drawings are merely functional entities and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices entity.
附图中所示的流程图仅是示例性说明，不是必须包括所有的内容和操作/步骤，也不是必须按所描述的顺序执行。例如，有的操作/步骤还可以分解，而有的操作/步骤可以合并或部分合并，因此实际执行的顺序有可能根据实际情况改变。The flow charts shown in the drawings are only exemplary illustrations, and do not necessarily include all contents and operations/steps, nor must they be performed in the order described. For example, some operations/steps can be decomposed, and some operations/steps can be combined or partly combined, so the actual order of execution may be changed according to the actual situation.
以下对本申请实施例的技术方案的实现细节进行详细阐述：The implementation details of the technical solutions of the embodiments of the present application are described in detail below:
第一电机、第二电机、第一变频器、第二变频器、第一门开限位、第二门开限位以及控制器。The first motor, the second motor, the first frequency converter, the second frequency converter, the first door opening limit, the second door opening limit and a controller.
第一电机：驱动第一挡火门运行。The first motor: drives the first fire damper to run.
第二电机：驱动第二挡火门运行。The second motor: drives the second fire damper to run.
第一变频器：与PLC通讯，接收PLC的启动、停止、速度信号，驱动第一电机运行。The first frequency converter: communicates with the PLC, receives the start, stop and speed signals of the PLC, and drives the first motor to run.
第二变频器：与PLC通讯，接收PLC的启动、停止、速度信号，驱动第二电机运行。The second frequency converter: communicates with the PLC, receives the start, stop and speed signals of the PLC, and drives the second motor to run.
第一门开限位：是第一挡火门打开到位的限位，传送数字量高电平信号给PLC。The first door opening limit: It is the limit for the first fire door to open fully, and transmits digital high-level signal to PLC.
第二门开限位：是第二挡火门打开到位的限位，传送数字量高电平信号给PLC。The second door opening limit: It is the limit for the second fire door to open fully, and transmits digital high-level signal to PLC.
PLC：接收第一变频器和第二变频器的励磁电流给定、励磁电流反馈、速度反馈(非编码器实际检测速度，而是变频器内部计算速度)、第一门开限位和第二门开限位数字量高电平信号，传送启动、停止、速度信号给第一变频器和第二变频器。PLC: Receive the given excitation current of the first and second inverters, excitation current feedback, speed feedback (not the actual detection speed of the encoder, but the internal calculation speed of the inverter), the first door opening limit and the second The door opening limit digital high-level signal transmits start, stop, and speed signals to the first and second frequency converters.
PLC与第一变频器和第二变频器通过通讯传送启动、停止、速度信号；PLC通过I/O模块的硬线与第一门开限位和第二门开限位传送数字量高电平信号。PLC communicates with the first inverter and the second inverter to transmit start, stop, and speed signals; PLC transmits digital high level with the first door opening limit and the second door opening limit through the hard line of the I/O module Signal.
当挡火门处于打开状态时，第一挡火门处于第一门开限位，第二挡火门处于第二门开限位。PLC传送相同的关闭命令和速度同时给第一变频器和第二变频器，此时，PLC内部定时器T1、T2开始对第一挡火门和第二挡火门分别计时，若第一挡火门和第二挡火门在运行期间未出现故障或未进行手动干预，那么T1、T2同时计时到11s，第一挡火门和第二挡火门同时停止。When the fire damper is in the open state, the first fire damper is at the first door opening limit position, and the second fire damper is at the second door opening limit position. PLC transmits the same closing command and speed to the first inverter and the second inverter at the same time. At this time, PLC internal timers T1 and T2 start to time the first fire door and the second fire door respectively. If the fire door and the second fire door are not faulty or manual intervention is not performed during the operation, then T1 and T2 will be timed to 11s at the same time, and the first fire door and the second fire door will stop at the same time.
为了使本领域技术人员更好的理解本申请，下面将结合图1对本申请进行简单说明。In order to enable those skilled in the art to better understand the present application, the present application will be briefly described below in conjunction with FIG. 1 .
根据一些实施例，本申请提供了一种炼钢转炉挡火门的控制方法，所述炼钢转炉包括驱动第一挡火门的第一电机、驱动第二挡火门的第二电机、控制第一电机工作的第一变频器、控制第二电机工作的第二变频器，以及控制第一变频器和第二变频器工作的控制器，所述方法包括：According to some embodiments, the present application provides a control method for a steelmaking converter fire damper, the steelmaking converter includes a first motor driving the first fire damper, a second motor driving the second fire damper, a control A first frequency converter for operating the first motor, a second frequency converter for controlling the operation of the second motor, and a controller for controlling the operation of the first frequency converter and the second frequency converter, the method comprising:
步骤101，控制器接收关门信号，根据所述关门信号分别发送关闭命令至第一变频器和第二变频器；
步骤102，所述第一变频器根据所述关闭命令控制第一电机工作，所述第二变频器根据所述关闭命令控制第二电机工作，所述控制器分别对所述第一电机和所述第二电机计时；
步骤103，到达预设时间后，所述第一挡火门和所述第二挡火门闭合，所述控制器通过所述第一变频器控制所述第一电机停止，以及通过所述第二变频器控制所述第二电机停止。
步骤104，若其中一个电机运行时间先到达预设时间，则所述控制器通过所述其中一个电机对应的变频器控制所述其中一个电机停止，另一个电机运行时间未到达预设时间，所述控制器获取所述另一个电机对应的变频器的励磁电流给定与励磁电流反馈，根据所述励磁电流给定与励磁电流反馈来控制所述另一个电机停止。
基于上述实施例，在步骤101中，在第一挡火门和第二挡火门都处于打开状态时，控制器接收关门信号时，则控制器根据关门信号分别同时发送相同的关闭命令至第一变频器和第二变频器；Based on the above embodiment, in
在步骤102中，第一变频器根据关闭命令控制第一电机工作，第一电机控制第一挡火门执行关闭动作，第二变频器根据关闭命令控制第二电机工作，第二电机控制第二挡火门执行关闭动作，同时，控制器分别对第一电机和第二电机开启计时T1和T2；In
在步骤103中，到达预设时间后，第一挡火门和第二挡火门刚好闭合，控制器通过第一变频器控制第一电机停止，第一挡火门也停止，控制器通过第二变频器控制第二电机停止，第二挡火门也停止。其中，预设时间可以根据实际需求设定，其根据的因素包括运行速度和运行距离。In
在步骤104中，如果第一电机运行时间先到达预设时间，则控制器通过第一变频器控制第一电机停止，第一电机运行时间到达预设时间时第二电机运行时间还未到达预设时间，控制器获取第二变频器的励磁电流给定与励磁电流反馈，控制器根据励磁电流给定与励磁电流反馈来控制第二电机停止。In
如果第二电机运行时间先到达预设时间，则控制器通过第二变频器控制第二电机停止，第二电机运行时间到达预设时间时第一电机运行时间还未到达预设时间，控制器获取第一变频器的励磁电流给定与励磁电流反馈，控制器根据励磁电流给定与励磁电流反馈来控制第一电机停止。在一些实施例中，所述第一电机和所述第二电机的预设时间一样。预设时间可以根据实际需求设定，在一些实施例中，所述预设时间为11秒。If the running time of the second motor reaches the preset time first, the controller controls the second motor to stop through the second frequency converter. When the running time of the second motor reaches the preset time, the running time of the first motor has not yet reached the preset time, and the controller The excitation current setting and the excitation current feedback of the first frequency converter are obtained, and the controller controls the first motor to stop according to the excitation current setting and the excitation current feedback. In some embodiments, the preset time of the first motor is the same as that of the second motor. The preset time can be set according to actual needs. In some embodiments, the preset time is 11 seconds.
相较于传统的安装关闭限位容易造成烫伤损坏，而其他测距、卷筒限位等设备相对费用较高，而依靠人观察到位情况总是不能关严，或者关闭不及时造成大冲击，对电机或变频器造成损害。因此在不增加任何形式的关闭限位(测距设备、卷筒限位)的情况下，通过对炉前挡火门运行时间的控制，本申请既能自动控制挡火门关闭停止，又能关闭严密。Compared with the traditional installation and closing limit, it is easy to cause burns and damage, while other equipment such as distance measuring and reel limit are relatively expensive, and relying on people to observe the position can not always be closed tightly, or closing not in time will cause a big impact, Damage to the motor or frequency converter. Therefore, without adding any form of closing limit (ranging equipment, reel limit), by controlling the running time of the fire damper door in front of the furnace, the application can automatically control the closing and stopping of the fire damper door, and can Close tightly.
在一些实施例中，控制器采用PLC控制器。In some embodiments, the controller is a PLC controller.
根据一些实施例，所述炼钢转炉还包括第一门开限位和第二门开限位，在步骤101，所述控制器接收关门信号，根据所述关门信号分别发送关闭命令至第一变频器和第二变频器之前，所述方法还包括：According to some embodiments, the steelmaking converter further includes a first door opening limit and a second door opening limit. In
所述第一挡火门处于第一门开限位，所述第二挡火门处于第二门开限位。The first fire damper is at the first door opening limit position, and the second fire damper is at the second door opening limit position.
基于上述实施例，设置第一门开限位和第二门开限位，在第一挡火门和第二挡火门打开时，使第一挡火门停止于第一门开限位，使第二挡火门停止于第二门开限位，防止第一挡火门和第二挡火门打开时冲出门开限位，或还没到达门开限位就停止。Based on the above-mentioned embodiment, the first door opening limit position and the second door opening limit position are set, and when the first fire damper door and the second fire damper door are opened, the first fire damper door is stopped at the first door opening limit position, Make the second fire damper stop at the second door open limit position, prevent the first fire damper and the second fire damper from rushing out of the door open limit position when they are opened, or stop before reaching the door open limit position.
根据一些实施例，在步骤104，所述若其中一个电机运行时间先到达预设时间，所述控制器通过所述其中一个电机对应的变频器控制所述其中一个电机停止，另一个电机运行时间未到达预设时间，所述控制器获取所述另一个电机对应的变频器的励磁电流给定与励磁电流反馈，根据所述励磁电流给定与励磁电流反馈来控制所述另一个电机停止中，所述方法还包括：According to some embodiments, in
步骤1041，若所述第一电机或和/或所述第二电机对应的变频器无法驱动故障电机工作时，或人为控制所述第一电机停止和/或所述第二电机停止时，则所述控制器对所述第一电机或和/或所述第二电机计时暂停；Step 1041, if the frequency converter corresponding to the first motor and/or the second motor cannot drive the faulty motor to work, or when the first motor is artificially controlled to stop and/or the second motor stops, then The controller pauses timing of the first motor and/or the second motor;
步骤1042，所述第一电机和/或所述第二电机恢复运行时，则所述控制器对所述第一电机或和/或所述第二电机继续计时；Step 1042, when the first motor and/or the second motor resumes running, the controller continues to count the first motor and/or the second motor;
步骤1043，其中一个电机先到达其对应的预设时间后，控制先到达预设时间的所述其中一个电机停止运行。Step 1043, after one of the motors reaches its corresponding preset time first, control the one of the motors that reaches the preset time first to stop running.
步骤1044，所述控制器获取未到达预设时间的另一个电机对应的变频器的励磁电流反馈和励磁电流给定；Step 1044, the controller obtains the excitation current feedback and excitation current setting of the frequency converter corresponding to another motor that has not reached the preset time;
步骤1045，所述控制器根据所述励磁电流反馈与所述励磁电流给定，控制所述另一个电机对应的挡火门停止运行。Step 1045, the controller controls the fire damper corresponding to the other motor to stop running according to the excitation current feedback and the excitation current setting.
基于上述实施例，在第一电机或(和)第二电机故障时，其故障可以是停止，或其他原因导致的电机速度没有正常运行时速度快。此时，控制器对故障电机或已停止的电机计时暂停，因为速度已经不是正常速度，如果根据正常速度对应的时间去运行，则会造成两个挡火门撞击。所以此时，控制器对所述第一电机或所述第二电机运行时间分别计时，其中，先到达预设时间的电机，所述控制器发送停止命令到先达到预设时间电机的变频器，所述变频器控制所述电机停止；所述控制器检测到所述第一电机或所述第二电机运行时间任一先到达预设时间，那么所述控制器获取未到达预设时间的电机对应的变频器的所述励磁电流反馈和所述励磁电流给定，当所述励磁电流给定与所述励磁电流反馈差值绝对值，再除以所述励磁电流给定，大于第一预设阈值时，所述控制器控制所述未到达预设时间的电机对应的挡火门停止运行。Based on the above embodiments, when the first motor or (and) the second motor fails, the failure may be a stop, or the speed of the motor caused by other reasons is not as fast as when it is running normally. At this time, the controller pauses the timing of the faulty motor or the motor that has stopped, because the speed is no longer the normal speed, if it runs according to the time corresponding to the normal speed, it will cause two fire dampers to hit. Therefore, at this time, the controller counts the running time of the first motor or the second motor respectively, wherein, the motor that reaches the preset time first, the controller sends a stop command to the inverter that first reaches the preset time , the frequency converter controls the motor to stop; the controller detects that the running time of the first motor or the second motor reaches the preset time first, then the controller obtains the The excitation current feedback and the excitation current setting of the inverter corresponding to the motor, when the absolute value of the difference between the excitation current setting and the excitation current feedback, divided by the excitation current setting, is greater than the first When the preset threshold is reached, the controller controls the fire damper corresponding to the motor that has not reached the preset time to stop running.
进一步的，无故障电机或无人为控制停止的电机，所述控制器不暂停计时，即连续计时，无故障电机或无人为控制停止的电机可正常工作，正常运行至关闭即可。Further, for a fault-free motor or a motor stopped by no human control, the controller does not suspend timing, that is, continuous timing, and the fault-free motor or motor stopped by no human control can work normally, and it only needs to run normally until it is turned off.
根据一些实施例，在步骤104，在控制器根据所述励磁电流反馈与所述励磁电流给定，控制所述另一个电机对应的挡火门停止运行中，所述方法还包括：According to some embodiments, in
步骤10451，获取所述励磁电流反馈与所述励磁电流给定的差值绝对值；Step 10451, obtaining the absolute value of the difference between the excitation current feedback and the excitation current given;
步骤10452，所述差值绝对值除以所述励磁电流给定获得目标值；Step 10452, dividing the absolute value of the difference by the given excitation current to obtain a target value;
步骤10453，当所述目标值大于第一预设阈值时，所述控制器控制所述另一个电机以及所述另一个电机对应的挡火门停止运行。Step 10453, when the target value is greater than the first preset threshold, the controller controls the other motor and the fire damper corresponding to the other motor to stop running.
基于上述实施例，当第一挡火门和第二挡火门相碰时，励磁电流反馈会发生变化，控制器持续获取励磁电流反馈与励磁电流给定的差值绝对值，当所述差值绝对值除以励磁电流给定的目标值大于第一预设阈值时，所述控制器控制所述未到达预设时间的电机对应的挡火门停止运行。即，当(励磁电流反馈－励磁电流给定)÷励磁电流给定的绝对值大于第一预设阈值时，控制器控制未到达预设时间的电机对应的挡火门停止运行。其中，第一预设阈值可以根据实际需求设定，在一些实施例中，第一预设阈值为10％。Based on the above embodiment, when the first fire damper and the second fire damper collide, the excitation current feedback will change, and the controller will continuously obtain the absolute value of the difference between the excitation current feedback and the given excitation current, and when the difference When the absolute value of the value divided by the given target value of the excitation current is greater than the first preset threshold, the controller controls the fire damper corresponding to the motor that has not reached the preset time to stop running. That is, when the absolute value of (excitation current feedback−excitation current setting)÷excitation current setting is greater than the first preset threshold, the controller controls the fire damper corresponding to the motor that has not reached the preset time to stop running. Wherein, the first preset threshold can be set according to actual needs, and in some embodiments, the first preset threshold is 10%.
本领域技术人员在考虑说明书及实践这里公开的实施方式后，将容易想到本申请的其它实施方案。本申请旨在涵盖本申请的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本申请的一般性原理并包括本申请未公开的本技术领域中的公知常识或惯用技术手段。Other embodiments of the present application will be readily apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any modification, use or adaptation of the application, these modifications, uses or adaptations follow the general principles of the application and include common knowledge or conventional technical means in the technical field not disclosed in the application .
应当理解的是，本申请并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本申请的范围仅由所附的权利要求来限制。It should be understood that the present application is not limited to the precise constructions which have been described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
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| US5218282A (en)* | 1990-03-22 | 1993-06-08 | Stanley Home Automation | Automatic door operator including electronic travel detection |
| US20100141107A1 (en)* | 2008-12-04 | 2010-06-10 | Samsung Electronics Co., Ltd. | Refrigerator and method of controlling the same |
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