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Speed and current double closed-loop control system and method for permanent magnet synchronous linear motor

A permanent magnet synchronous linear, double closed-loop control technology, applied in control systems, vector control systems, motor generator control and other directions, can solve problems such as poor anti-interference ability, slow speed tracking response, etc.

Active Publication Date: 2019-08-16
SOUTHEAST UNIV
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Problems solved by technology

[0003] Purpose of the invention: In order to solve the problem of slow speed tracking response and poor anti-interference ability of permanent magnet synchronous linear motor under the traditional PID control strategy, a permanent magnet synchronous linear motor speed and current double closed-loop control system and control method are proposed

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  • Speed and current double closed-loop control system and method for permanent magnet synchronous linear motor
  • Speed and current double closed-loop control system and method for permanent magnet synchronous linear motor
  • Speed and current double closed-loop control system and method for permanent magnet synchronous linear motor

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Embodiment Construction

[0121] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0122] Such as figure 1 As shown, a permanent magnet synchronous linear motor speed and current double closed-loop control system, including: fuzzy adaptive sliding mode speed controller, nonlinear disturbance observer, d-axis fuzzy PID controller, q-axis fuzzy PID controller, inverse Park transformation module, SVPWM vector pulse width modulation module, three-phase inverter, permanent magnet synchronous linear motor, clark transformation module, park transformation module, current sensor and position and speed sensor.

[0123] The input to the fuzzy adaptive sliding mode speed controller consists of the desired speed v of the permanent magnet synchronous linear motor ref and the difference between the actual speed v output by the position and speed sensor and the output f of the nonlinear disturbance observer v A...

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Abstract

The invention discloses a speed and current double closed-loop control system and method for a permanent magnet synchronous linear motor. The method comprises the steps of: designing a permanent magnet synchronous linear motor vector control system; designing a fuzzy adaptive sliding-mode speed controller; designing a nonlinear disturbance observation; designing a d-axis fuzzy PID controller; designing a q-axis fuzzy PID controller; obtaining a desired q-axis current reference value as an input of the q-axis fuzzy PID controller according to the designed nonlinear disturbance observer and thedesigned fuzzy adaptive sliding-mode speed controller; setting a d-axis reference current value as 0, and using the id obtained by subtracting park transform from 0 as the input of the d-axis fuzzy PID controller; after the processing by the d-axis fuzzy PID controller and the q-axis fuzzy PID controller, obtaining the ud, uq of the vector control system, and finally outputting the current operating driving voltage of the permanent magnet synchronous linear motor by the anti-park transformation and SVPWM modulation through the vector control and an inverter. The method enhances the robustnessof the system.

Description

technical field [0001] The invention relates to a design method for a control strategy of a permanent magnet synchronous linear motor, in particular to a permanent magnet synchronous linear motor speed regulation control system and control method based on fuzzy adaptive sliding mode, nonlinear disturbance observer and fuzzy PID control. Background technique [0002] The permanent magnet synchronous linear motor has the advantages of small size, high efficiency, low moment of inertia, large electromagnetic torque, and convenient control, so it becomes one of the best choices for actuators in servo systems. The permanent magnet synchronous linear motor servo system generally includes three control links of position, speed and current. During the actual operation of the motor, the load torque or moment of inertia of the motor (considered as a disturbance) will affect the expected servo performance of the system. adverse effects. A high-performance servo system requires that th...

Claims

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Application Information

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IPC IPC(8): H02P21/00H02P21/22
CPCH02P21/0007H02P21/001H02P21/0017H02P21/22
Inventor 余海涛王尧杨依林夏涛李东暘张建文王玉晨郭蓉
Owner SOUTHEAST UNIV
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