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A self-calibration method for the speed loop pi-ip control parameters of a permanent magnet synchronous linear servo system

A permanent magnet synchronous linear, PI-IP technology, applied in the direction of linear motor control, control system, control generator, etc., can solve the problem of relying on the structure of the controlled model and the accuracy of parameter identification, etc., to achieve strong real-time algorithm and meet the instructions Fast adjustment and high recognition accuracy

Active Publication Date: 2022-03-22
GUANGDONG SAMSUN TECH CO LTD
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Problems solved by technology

The model-based self-calibration method has a simple algorithm and good stability, but it depends on the identification accuracy of the controlled model structure and parameters

Method used

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  • A self-calibration method for the speed loop pi-ip control parameters of a permanent magnet synchronous linear servo system
  • A self-calibration method for the speed loop pi-ip control parameters of a permanent magnet synchronous linear servo system
  • A self-calibration method for the speed loop pi-ip control parameters of a permanent magnet synchronous linear servo system

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[0061] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0062] figure 1 It is a schematic diagram of the vector control structure of the permanent magnet synchronous linear servo system of the present invention. In practical engineering applications, usually i d = 0 to achieve approximate decoupling of the current. exist figure 2 In , by discretizing the speed loop controlled object model of the permanent magnet synchronous linear servo system, the second-order discrete model of the speed loop controlled object can be obtained:

[0063]

[0064] Among them, a 1 、a 2 and b 1 is the model parameter to be identified, ω f is the linear velocity ...

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Abstract

The invention discloses a self-calibration method for the speed loop PI-IP control parameters of a permanent magnet synchronous linear servo system, which adopts a PI-IP controller and automatically corrects the parameters of the PI-IP controller in real time to realize the control of the permanent magnet synchronous linear servo system high-performance speed control, the method includes the following steps: S1, extracting the thrust current command and linear speed feedback of the permanent magnet synchronous linear servo system, and identifying the parameters of the controlled model of the speed loop in real time; S2, based on the controlled model of the speed loop, predicting k Speed ​​output of permanent magnet synchronous linear servo system at time +j; establish Lyapunov evaluation index to judge speed tracking performance; S3, simplify Lyapunov evaluation index incremental function, and obtain PI‑IP controller parameter online under stable conditions The optimization results realize the self-calibration of the control parameters of the speed loop PI-IP controller. The method of the present invention uses a PI-IP controller to replace a traditional PI or IP controller, and corrects controller parameters in real time, and has the advantages of simple control structure, strong anti-disturbance ability and fast speed response.

Description

technical field [0001] The invention relates to the technical field of a high-frequency-response permanent magnet synchronous linear servo system, in particular to a self-calibration method for a speed loop PI-IP control parameter of a permanent magnet synchronous linear servo system. Background technique [0002] The permanent magnet synchronous linear servo system has a simple structure and can directly realize linear motion without intermediate transmission links. It has the advantages of relatively small load inertia and high dynamic response. It is widely used in the fields of CNC machine tools, semiconductor chip manufacturing and precision instruments. The control performance of the permanent magnet synchronous linear servo system not only depends on its hardware manufacturing level, but also depends on the control strategy adopted in the linear servo drive and the control parameters set. Only when there is a good match between the control strategy adopted by the line...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/00H02P21/18H02P25/064
CPCH02P6/006H02P21/18H02P25/064
Inventor 卢少武余信中龙丁李汐周凤星马娅婕但峰严保康胡轶宁博文
Owner GUANGDONG SAMSUN TECH CO LTD