Adaptive second-order terminal sliding-mode control system and method of permanent magnet linear synchronous motor

A technology of permanent magnet linear synchronization and terminal sliding mode, applied in the field of numerical control, can solve problems such as chattering, poor effect, and singularity

Inactive Publication Date: 2015-09-16
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

[0004] Scholars have proposed some control methods, such as using robust control theory to design a controller, which can make the system have good robustness, but has a certain degree of conservatism; using adaptive control theory to design a controller can effectively overcome parameter changes. impact on the system, but less so in the case of fast parameter changes and high frequency of exte...

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  • Adaptive second-order terminal sliding-mode control system and method of permanent magnet linear synchronous motor
  • Adaptive second-order terminal sliding-mode control system and method of permanent magnet linear synchronous motor
  • Adaptive second-order terminal sliding-mode control system and method of permanent magnet linear synchronous motor

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Embodiment Construction

[0067]In view of the fact that the permanent magnet linear synchronous motor (PMLSM) servo system is easily affected by uncertain factors such as parameter changes and load disturbances, the present invention provides an adaptive second-order terminal sliding mode control system and method for permanent magnet linear synchronous motors. First-order sliding mode control, terminal sliding mode control and adaptive control scheme are combined, and the error amount is obtained by comparing the given speed signal and the feedback speed signal of the permanent magnet linear synchronous motor servo system, and the terminal sliding mode surface is designed with this error amount to avoid singularity problem. Using the super-helix algorithm of second-order sliding mode control as the input of the speed controller, and introducing adaptive control to dynamically adjust the control gain of the super-helix algorithm, the purpose of the present invention is to realize the rapid response of ...

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Abstract

The invention relates to an adaptive second-order terminal sliding-mode control system and method. On the basis of comparison of a given speed signal and a feedback speed signal of a servo system of a permanent magnet linear synchronous motor, an error amount is obtained; a terminal sliding mode surface is designed based on the error amount and a super-coiling algorithm controlled by the second-order sliding mode is used for realizing the input of a speed controller; and an adaptive control way is introduced to carry out dynamic adjustment on a control gain of the super-coiling algorithm. Therefore, the rapid response of the system is realized; and the system robustness is improved. With the control method, the system can have the high robustness and the system buffeting can be weakened effectively.

Description

technical field [0001] The invention belongs to the technical field of numerical control, and in particular relates to an adaptive second-order terminal sliding mode control system and method of a permanent magnet linear synchronous motor. Background technique [0002] Numerical control technology is a technology that uses digital signals to control the mechanical movement process of the control object. Numerical control equipment is a mechatronic product formed by the penetration of new technologies represented by numerical control technology into traditional manufacturing industries and emerging manufacturing industries. The most fundamental difference between modern CNC machine tools and early CNC machine tools is that their processing speed and processing accuracy have undergone tremendous changes, which have increased by nearly a thousand times respectively. Because high-speed and high-precision machining technology can greatly increase the processing rate, improve prod...

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Application Information

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IPC IPC(8): H02P21/00
Inventor 孙宜标高倩刘春芳
Owner SHENYANG POLYTECHNIC UNIV
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