Integrated control device, system and method based on system of magnetic bearing and motor
阅读说明：本技术 基于磁轴承和电机的系统的一体化控制装置、系统及方法 (Integrated control device, system and method based on system of magnetic bearing and motor ) 是由 王智洋 张庆源 于 2019-08-23 设计创作，主要内容包括：本发明涉及磁轴承和电机的控制技术领域,具体涉及一种基于磁轴承和电机的系统的一体化控制装置、系统及方法,该方法包括：实时获取电机的运行数据和磁轴承的运行数据；同步处理所述电机的运行数据和所述磁轴承的运行数据并依据处理结果生成控制策略；根据所述控制策略输出控制信号对所述电机和所述磁轴承的运行状态进行协同控制。本发明的实施例将传统的磁轴承控制器和电机控制器合二为一,实现数据同步处理、统一控制,电机的运行数据和磁轴承的运行数据实时共享,减少系统的响应时间,大大节约了成本,减少电子器件数量的同时提升了系统的可靠性。(The invention relates to the technical field of control of magnetic bearings and motors, in particular to an integrated control device, a system and a method of a system based on the magnetic bearings and the motors, wherein the method comprises the following steps: acquiring the operation data of the motor and the operation data of the magnetic bearing in real time; synchronously processing the operation data of the motor and the operation data of the magnetic bearing and generating a control strategy according to the processing result; and outputting a control signal according to the control strategy to cooperatively control the running states of the motor and the magnetic bearing. The embodiment of the invention combines the traditional magnetic bearing controller and the motor controller into a whole, realizes synchronous processing and unified control of data, shares the running data of the motor and the running data of the magnetic bearing in real time, reduces the response time of the system, greatly saves the cost, reduces the number of electronic devices and simultaneously improves the reliability of the system.)
1. An integrated control method for a system based on magnetic bearings and an electric machine, characterized in that the integrated control method comprises:
acquiring the operation data of the motor and the operation data of the magnetic bearing in real time;
synchronously processing the operation data of the motor and the operation data of the magnetic bearing and generating a control strategy according to the processing result;
and outputting a control signal according to the control strategy to cooperatively control the running states of the motor and the magnetic bearing.
2. The integrated control method according to claim 1, wherein the operational data of the magnetic bearing comprises: the rotation speed, position signal and vibration signal of the magnetic bearing, and the operation data of the motor comprise: the rotational speed, current signal and position signal of the motor.
3. The integrated control method of claim 2, wherein the synchronously processing operational data of the motor and operational data of the magnetic bearing comprises:
calculating the vibration amplitude of the magnetic bearing according to the acquired position signal of the magnetic bearing;
and calculating the torque of the motor according to the acquired position signal and current signal of the motor.
4. The integrated control method according to claim 3, wherein when the processing result is a vibration amplitude of the magnetic bearing, the control strategy comprises:
when the vibration amplitude is larger than a first preset vibration amplitude threshold value, judging that the system is in a fault state, and automatically controlling and changing the rotating speed of the motor;
and when the vibration amplitude is larger than a second preset vibration amplitude threshold value, judging that the magnetic bearing is in a failure state according to the vibration signal, controlling to start the backup bearing, and automatically controlling the rotating speed of the motor to be reduced to zero.
5. The integrated control method according to claim 3, wherein when the processing result is the torque of the motor, the control strategy comprises: and when the torque of the motor is greater than a preset torque threshold value, judging that the system is in a fault state, and controlling the system to give an alarm.
6. An integrated control device for a system based on magnetic bearings and an electric machine, characterized in that it comprises:
the acquisition module is used for acquiring the operation data of the motor and the operation data of the magnetic bearing in real time;
the processing module is connected with the acquisition module and used for synchronously processing the operation data of the motor and the operation data of the magnetic bearing and generating a control strategy according to the processing result;
and the control module is connected with the processing module and used for outputting a control signal according to the control strategy to cooperatively control the running states of the motor and the magnetic bearing.
7. An integrated control system for a magnetic bearing and electric machine based system, comprising:
the integrated control device according to claim 6, provided with an input for receiving operational data of the motor and operational data of the magnetic bearing and an output for outputting a control signal;
the motor is connected with the output end of the integrated control device and used for receiving the control signal to control the running state of the load;
the motor sensor is connected with the input end of the integrated control device and the motor and is used for acquiring the operation data of the motor and transmitting the operation data of the motor to the integrated control device;
the magnetic bearing driver is connected with the magnetic bearing and the output end of the integrated control device and is used for receiving a control signal and controlling the running state of the magnetic bearing according to the control signal;
and the magnetic bearing sensor is connected with the input ends of the magnetic bearing and the integrated control device and is used for acquiring the operation data of the magnetic bearing and transmitting the operation data of the magnetic bearing to the integrated control device.
8. The integrated control system of claim 7, wherein the magnetic bearing driver is provided in two or more sets, each set for controlling multiple force directions of the magnetic bearing.
9. The integrated control system of claim 8, wherein two or more sets of magnetic bearing sensors are provided, the magnetic bearing sensors being in one-to-one correspondence with the magnetic bearing drivers.
10. The integrated control system of claim 7, wherein the motor sensor comprises: motor position signal detecting element, rotational speed detecting element, voltage signal detecting element and current signal detecting element, the magnetic bearing sensor includes: a magnetic bearing position signal detection unit, a speed detection unit and a vibration signal detection unit.
Technical Field
The invention relates to the technical field of control of magnetic bearings and motors, in particular to an integrated control device, system and method based on a system of magnetic bearings and motors.
Background
The energy storage system changes the kinetic energy of the system by increasing and decreasing the speed of the shafting to realize the storage of the energy, in order to enable the shafting to reach the fastest rotating speed, the prior art adopts a magnetic suspension bearing, but a magnetic bearing controller and a motor controller in the system are mutually independent, so that the magnetic bearing system and the energy storage system only carry out less communication, and because the magnetic bearing system and the energy storage system respectively adopt independent controllers, the number of electronic devices in the system is greatly increased, the cost is improved, the integral reliability of the system is also reduced, and meanwhile, the phenomenon of communication delay exists, so that the real-time information sharing cannot be realized.
In view of the above, it is an urgent technical problem in the art to provide a new integrated control device, system and method for a system based on magnetic bearings and electric machines to overcome the defects in the prior art.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned drawbacks of the prior art and providing an integrated control device, system and method for a system based on magnetic bearings and electric machines.
The object of the invention can be achieved by the following technical measures:
the embodiment of the invention discloses an integrated control method of a system based on a magnetic bearing and a motor, which comprises the following steps:
acquiring the operation data of the motor and the operation data of the magnetic bearing in real time;
synchronously processing the operation data of the motor and the operation data of the magnetic bearing and generating a control strategy according to the processing result;
and outputting a control signal according to the control strategy to cooperatively control the running states of the motor and the magnetic bearing.
According to one embodiment of the invention, the operational data of the magnetic bearing comprises: the rotation speed, position signal and vibration signal of the magnetic bearing, and the operation data of the motor comprise: the rotational speed, current signal and position signal of the motor.
According to one embodiment of the invention, said synchronously processing operational data of the motor and operational data of the magnetic bearing comprises:
calculating the vibration amplitude of the magnetic bearing according to the acquired position signal of the magnetic bearing;
and calculating the torque of the motor according to the acquired position signal and current signal of the motor.
According to one embodiment of the invention, when the processing result is a vibration amplitude of the magnetic bearing, the control strategy comprises:
when the vibration amplitude is larger than a first preset vibration amplitude threshold value, judging that the system is in a fault state, and automatically controlling and changing the rotating speed of the motor;
and when the vibration amplitude is larger than a second preset vibration amplitude threshold value, judging that the magnetic bearing is in a failure state according to the vibration signal, controlling to start the backup bearing, and automatically controlling the rotating speed of the motor to be reduced to zero.
According to one embodiment of the invention, when the result of the processing is the torque of the electric machine, the control strategy comprises: and when the torque of the motor is greater than a preset torque threshold value, judging that the system is in a fault state, and controlling the system to give an alarm.
The embodiment of the invention discloses an integrated control device of a system based on a magnetic bearing and a motor, which comprises:
the acquisition module is used for acquiring the operation data of the motor and the operation data of the magnetic bearing in real time;
the processing module is connected with the acquisition module and used for synchronously processing the operation data of the motor and the operation data of the magnetic bearing and generating a control strategy according to the processing result;
and the control module is connected with the processing module and used for outputting a control signal according to the control strategy to cooperatively control the running states of the motor and the magnetic bearing.
An embodiment of the present invention discloses an integrated control system of a system based on a magnetic bearing and a motor, the integrated control system comprising:
the integrated control device is provided with an input end and an output end, the input end is used for receiving the operation data of the motor and the operation data of the magnetic bearing, and the output end is used for outputting a control signal;
the motor is connected with the output end of the integrated control device and used for receiving the control signal to control the running state of the load;
the motor sensor is connected with the input end of the integrated control device and the motor and is used for acquiring the operation data of the motor and transmitting the operation data of the motor to the integrated control device;
the magnetic bearing driver is connected with the magnetic bearing and the output end of the integrated control device and is used for receiving a control signal and controlling the running state of the magnetic bearing according to the control signal;
and the magnetic bearing sensor is connected with the input ends of the magnetic bearing and the integrated control device and is used for acquiring the operation data of the magnetic bearing and transmitting the operation data of the magnetic bearing to the integrated control device.
According to one embodiment of the invention, the magnetic bearing driver is provided with two or more sets, each set for controlling a plurality of force directions of the magnetic bearing.
According to one embodiment of the invention, two or more sets of magnetic bearing sensors are provided, the magnetic bearing sensors being arranged in one-to-one correspondence with the magnetic bearing drivers.
According to one embodiment of the invention, the motor sensor comprises: motor position signal detecting element, rotational speed detecting element, voltage signal detecting element and current signal detecting element, the magnetic bearing sensor includes: a magnetic bearing position signal detection unit, a speed detection unit and a vibration signal detection unit.
Compared with the traditional motor controller and magnetic bearing controller which are mutually independently controlled, the integrated control device, system and method of the system based on the magnetic bearing and the motor of the invention combine the magnetic bearing controller and the motor controller into a whole, realize the synchronous processing and unified control of data, share the running data of the motor and the running data of the magnetic bearing in real time, reduce the response time of the system, greatly save the cost, reduce the number of electronic devices and simultaneously improve the reliability of the system.
Drawings
Fig. 1 is a flow chart schematic of the integrated control method of the magnetic bearing and motor based system of the present invention.
Fig. 2 is a schematic of the architecture of the integrated control of the magnetic bearing and motor based system of the present invention.
Fig. 3 is a schematic structural view of an integrated control system of the magnetic bearing and motor based system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to make the description of the present disclosure more complete and complete, the following description is given for illustrative purposes with respect to the embodiments and examples of the present invention; it is not intended to be the only form in which the embodiments of the invention may be practiced or utilized. The embodiments are intended to cover the features of the various embodiments as well as the method steps and sequences for constructing and operating the embodiments. However, other embodiments may be utilized to achieve the same or equivalent functions and step sequences.
The embodiment of the invention discloses an integrated control method of a system of a base magnetic bearing and a motor, fig. 1 shows an integrated control method of a system based on a magnetic bearing and a motor, please refer to fig. 1, the integrated control method comprises the following steps:
step S1: acquiring the operation data of the motor and the operation data of the magnetic bearing in real time;
further, the operational data of the magnetic bearing includes: the rotating speed, the position signal and the vibration signal of the magnetic bearing, and the operation data of the motor comprise: the rotational speed, current signal and position signal of the motor.
Step S2: synchronously processing the operation data of the motor and the operation data of the magnetic bearing and generating a control strategy according to the processing result;
wherein synchronously processing the operational data of the motor and the operational data of the magnetic bearing comprises:
calculating the vibration amplitude of the magnetic bearing according to the acquired position signal of the magnetic bearing;
and calculating the torque of the motor according to the acquired position signal and current signal of the motor.
Further, when the processing result is the vibration amplitude of the magnetic bearing, the control strategy includes:
when the vibration amplitude is larger than a first preset vibration amplitude threshold value, judging that the system is in a fault state, and automatically controlling and changing the rotating speed of the motor so as to improve the reliability of the system;
when the vibration amplitude is larger than a second preset vibration amplitude threshold value, judging that the magnetic bearing is in a failure state according to vibration signals (such as high-order synchronous signal components, fractional order synchronous signal components and the like), controlling to start the backup bearing, automatically controlling to rapidly reduce the rotating speed of the motor until the rotating speed of the motor is reduced to zero, and prolonging the service life of the backup bearing;
when the processing result is the torque of the motor, the control strategy comprises the following steps: when the torque of the motor is larger than a preset torque threshold value, the system is judged to be in a fault state, and the control system gives an alarm.
Further, when the system state is diagnosed by using the torque of the motor, an absolute value or a fluctuation value of the torque of the motor may be used as a criterion, for example, when the absolute value of the torque of the motor is greater than a preset absolute value threshold, the system is determined to be in a fault state, and the control system gives an alarm, or when the fluctuation value of the torque of the motor is greater than a preset fluctuation threshold, the system is determined to be in the fault state, and the control system gives an alarm.
Step S3: and outputting a control signal according to the control strategy to cooperatively control the running states of the motor and the magnetic bearing.
The integrated control method of the embodiment of the invention is suitable for all systems adopting the magnetic bearings and the motors, and the magnetic bearings and the motors in the systems adopt the same control device. In one embodiment, the system comprises a magnetic bearing and a flywheel motor, and particularly, in one embodiment, when a position signal of the magnetic bearing is acquired in real time, the vibration amplitude of the magnetic bearing is calculated according to the position signal of the magnetic bearing, when the vibration amplitude is larger than a first preset vibration amplitude threshold value, the system is judged to be in a fault state, the system immediately and automatically controls and changes the rotating speed of the flywheel motor, and the reliability of the system is enhanced. In another embodiment, when the position signal of the magnetic bearing is acquired in real time, the vibration amplitude of the magnetic bearing is calculated according to the position signal of the magnetic bearing, when the vibration amplitude is larger than a second preset vibration amplitude threshold value, the standby bearing is controlled to be started according to the time domain and frequency domain characteristics of the vibration signal to judge that the magnetic bearing is in a failure state, the rotating speed of the flywheel motor is automatically controlled to be rapidly reduced to zero, the conversion between control loops is avoided, the information interaction time is shortened, the response time of a system is shortened, the heavy load time of the standby bearing is shortened, and the service life of the standby magnetic bearing is prolonged. In another embodiment, when the position and current signals of the flywheel motor are obtained in real time, the torque of the flywheel motor is calculated according to the position and current signals of the flywheel motor, the load state of the flywheel motor is obtained according to the torque of the flywheel motor, the fault state of the system is evaluated according to the load state of the flywheel motor, and when the torque of the flywheel motor is far greater than a preset torque threshold value, the system is judged to be in the fault state, and the control system gives an alarm.
Further, in other embodiments, when the rotation speed of the flywheel motor and the current rotation speed of the magnetic bearing are obtained in real time, the control system shares the rotation speed of the flywheel motor in real time, and if the speed sensor of the magnetic bearing fails, the target rotation speed of the magnetic bearing is obtained through the rotation speed of the flywheel motor, so that the current control strategy of the magnetic bearing is adjusted, the stability of the magnetic bearing is improved, and meanwhile, the speed sensor of the magnetic bearing can be omitted under specific conditions, so that the production cost is reduced.
The integrated control method of the invention simultaneously obtains and synchronously processes the running data of the motor and the running data of the magnetic bearing, and cooperatively controls the running state of the magnetic bearing and the running state of the motor, thereby realizing the real-time sharing of the running data of the motor and the running data of the magnetic bearing, reducing the response time of the system, greatly saving the cost, reducing the number of electronic devices and simultaneously improving the reliability of the system.
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An embodiment of the present invention discloses an integrated control system of a system based on a magnetic bearing and a motor, fig. 3 shows an integrated control system of a system based on a magnetic bearing and a motor, please refer to fig. 3, the integrated control system comprises:
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The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
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