Winding switching control system, method and device of permanent magnet synchronous linear motor
A permanent magnet synchronous linear and winding switching technology, used in control systems, AC motor control, and estimation/correction of motor parameters. Winding switching, improving fault tolerance, and improving reliability
Pending Publication Date: 2022-02-18
BEIJING MECHANICAL EQUIP INST
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Problems solved by technology
Since the winding switching device is installed together with the motor body, it is easy to cause the position sensor to fail under severe conditions such as high temperature, oil pollution, and dust. In addition, electromagnetic environments such as high voltage and high frequency are also likely to cause unknown interference to the sensor signal during signal transmission. These phenomena are likely to lead to abnormal power supply of the motor, cause the motor to lose step, and directly affect the stable operation of the motor
There is no high-reliability winding switching control system specifically for multi-segment permanent magnet synchronous linear motors
Method used
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[0037] 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 disclosure will be thorough and complete and fully convey the concept of example embodiments to those skilled in the art.
[0038] 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 embodiments of the invention. However, those skilled in the art will appreciate that the technical solutions of the present invention may be practiced without one or more of the specific details, or other methods, components, means, steps, etc. may be employed. In other instances, well-known methods, apparatus, implem...
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The invention discloses a winding switching control system, method and device of a permanent magnet synchronous linear motor. The method comprises the following steps: measuring the initial position of a mover of the linear motor when the mover is static; calculating the real-time position of the rotor according to the first position data and the initial position; judging whether the calculated real-time position of the rotor is accurate or not according to a comparison result of the real-time position of the rotor and the second position data; if the calculated real-time position of the rotor is accurate, outputting the position of the rotor; and controlling switching of the switcher unit according to the corresponding relation between the rotor position and the stator winding section. According to the invention, the position of the rotor can be measured and corrected in real time, the fault tolerance of the system is improved, the risk caused by the out-of-step of the rotor to the operation of the system is reduced to a great extent, and the reliability of the system is improved. In addition, the winding switching control system can realize high-reliability winding switching of the multi-segment permanent magnet synchronous linear motor.
Description
technical field [0001] The invention relates to the technical field of linear motor boosting launch, in particular to a winding switching control system, method and device of a permanent magnet synchronous linear motor. Background technique [0002] A linear motor is a transmission device that directly converts electrical energy into mechanical energy for linear motion. The linear motion drive device composed of a traditional rotary motor and a set of transformation mechanisms is far from meeting the requirements of modern control systems. The linear motor has changed the traditional intermediate conversion link such as chain, wire rope, conveyor belt, rack screw and worm gear, and overcomes the defects of long transmission chain, large volume, low efficiency, slow response and low precision of the traditional mechanical conversion mechanism. . Due to the outstanding advantages of simple structure, direct transmission, and fast response, linear motors have developed rapidly...
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IPC IPC(8): H02P6/16H02P23/14H02P25/064H02P25/18H02P27/06
CPCH02P6/16H02P23/14H02P25/064H02P25/18H02P27/06
Inventor 张东淮李遥李艳明赵斌
Owner BEIJING MECHANICAL EQUIP INST