Accelerated speed considered multi-permanent magnet synchronous motor relative coupling control method

A multi-motor control and deviation coupling technology, which is applied in motor control, multiple motor speed/torque control, control systems, etc., can solve the problems of speed synchronization performance, drive performance mismatch, motor load disturbance, etc., and achieve good synchronization performance And following performance, small speed drop, strong anti-interference effect

Active Publication Date: 2017-06-23
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

In addition, the speed synchronization performance of the system is easily affected by factors such as drive performance mismatch, motor load disturbance, etc.

Method used

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  • Accelerated speed considered multi-permanent magnet synchronous motor relative coupling control method
  • Accelerated speed considered multi-permanent magnet synchronous motor relative coupling control method
  • Accelerated speed considered multi-permanent magnet synchronous motor relative coupling control method

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Embodiment Construction

[0042] The compensation link of the traditional deviation coupling only considers the speed difference between the motors, and does not consider the acceleration of the entire multi-motor system. The deviation coupling strategy considering the acceleration proposed by the present invention considers 3 motors as the entire system, and the comparison results in 3 The minimum speed of one motor can be controlled to allow other motors to track the lowest speed, which can better improve the synchronization performance of each motor. And take the acceleration of each motor into consideration, compare the maximum acceleration of all motors, and let the three motors accelerate at the maximum acceleration, so that in the case of sudden load changes, each motor can follow the speed at the fastest speed. at a given speed.

[0043] On the basis of the multi-motor control structure using the deviation coupling control considering the acceleration, a single motor uses the integral sliding m...

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Abstract

The invention relates to a multi-motor relative coupling control. In order to present an improved relative coupling strategy, the minimum rotation speed of each motor is obtained by comparison and other motors follows the lowest rotation speed so that the synchronization performance of each motor can be preferably improved. Moreover, an accelerated speed of each motor is taken into consideration and each motor is accelerated at a maximum accelerated speed. The invention adopts the technical scheme that an accelerated speed considered multi-permanent magnet synchronous motor relative coupling control method comprises the steps of considering i motors as the whole system, comparing the rotation speeds of the i motors to obtain the minimum rotation speed and enabling other motors to follow the lowest rotation speed; comparing the accelerated speeds of all motors to obtain a maximum accelerated speed and enabling the i motors to be accelerated at the maximum accelerated speed; on the basis of using accelerated speed considered relative coupling control on a multi-motor control structure, and enabling the single motor to use an integral sliding mode control algorithm to finally realize the motor relative coupling control. The multi-motor relative coupling control provided by the invention is mainly applied to design and manufacture fields.

Description

technical field [0001] The invention relates to a multi-motor deviation coupling control method considering acceleration, and belongs to the field of multi-motor speed cooperative control. Specifically, it relates to a deviation-coupling control method for multi-permanent-magnet synchronous motors considering acceleration. Background technique [0002] The multi-motor speed synchronous control system is widely used in printing, textile, chemical fiber and other high-precision, high-speed industrial systems. The quality of the system speed synchronization performance directly affects the reliability of the industrial system and the quality of the produced products. In addition, the speed synchronization performance of the system is easily affected by factors such as drive performance mismatch and motor load disturbance. At present, the commonly used multi-axis transmission synchronous control strategies include master-slave control, cross-coupling control, deviation coupling...

Claims

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Application Information

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IPC IPC(8): H02P6/04
CPCH02P6/04H02P2207/05
Inventor 耿强徐婷婷夏长亮唐永聪李新旻
Owner TIANJIN POLYTECHNIC UNIV
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