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Sliding mode control method used for permanent magnet synchronous motor and capable of realizing adjustable stabilization time

A permanent magnet synchronous motor, stabilization time technology, applied in motor control, motor generator control, AC motor control and other directions, can solve the problem that the stabilization time cannot be set, the stabilization time of controller parameters cannot be clearly reflected, and the convergence speed of the system can be changed. and other problems, to achieve good anti-interference performance, good control accuracy and robustness, and the effect of reducing chattering

Pending Publication Date: 2021-11-26
JIANGSU UNIV
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Problems solved by technology

However, none of the above control methods can clearly reflect the relationship between the controller parameters and the actual stabilization time. The convergence rate of the system can only be vaguely changed by modifying the controller parameters, and the stability cannot be directly set in the controller explicitly. time

Method used

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  • Sliding mode control method used for permanent magnet synchronous motor and capable of realizing adjustable stabilization time
  • Sliding mode control method used for permanent magnet synchronous motor and capable of realizing adjustable stabilization time
  • Sliding mode control method used for permanent magnet synchronous motor and capable of realizing adjustable stabilization time

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Embodiment Construction

[0041] The invention discloses a sliding mode control method of a permanent magnet synchronous motor which is stable at a predetermined time, which is used for the speed regulation control of the permanent magnet synchronous motor. In order to make the purpose, implementation and beneficial effects of the present invention more clear and definite, the specific implementation steps of the present invention will be described in detail below through specific examples and accompanying drawings.

[0042] figure 1 It is the overall block diagram of the permanent magnet synchronous motor vector control system of the present invention. It includes the following parts: permanent magnet synchronous motor module, inverter module, SVPWM module, current loop module, speed loop module, coordinate transformation module.

[0043] Table 1 shows the specific parameters of the permanent magnet synchronous motor used in the example.

[0044] Table 1 Permanent magnet synchronous motor parameter ...

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Abstract

The invention discloses a design method of a sliding mode controller with adjustable stabilization time, and the sliding mode controller is used for speed regulation control of a permanent magnet synchronous motor. The method mainly comprises the following steps of: step 1, based on a vector control strategy, realizing decoupling of a speed loop and a current loop, and establishing a mathematical model of the speed loop by adopting a command control method; step 2, designing a speed loop controller of the permanent magnet synchronous motor by using a sliding mode control algorithm with stable preset time; and step 3, introducing a disturbance observer to carry out feed-forward compensation on the basis of the sliding mode controller which stable preset time so as to reduce buffeting of the control system. The control method provided by the invention not only can enable the system state to converge to a balance point within a preset time T, but also can improve the inherent buffeting problem of a traditional sliding mode control method, and the final composite controller has good tracking precision and anti-interference performance.

Description

technical field [0001] The invention relates to the field of speed regulation control of permanent magnet synchronous motors, and mainly includes a design method of a permanent magnet synchronous motor sliding mode device with adjustable stabilization time. Background technique [0002] Permanent magnet synchronous motor has become the mainstream choice in the current servo speed control system due to its high efficiency, low noise, small size, large starting torque, and fast response. It has been widely used in robots, aerospace, and medical equipment. , Industrial automation and other fields. In recent years, under the vigorous promotion of national policies, the electric vehicle industry has flourished, which undoubtedly brings a broader application prospect to permanent magnet synchronous motors. However, the permanent magnet synchronous motor is a multivariable, nonlinear, strongly coupled time-varying nonlinear system, and the traditional linear PI control is difficul...

Claims

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Application Information

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IPC IPC(8): H02P21/05H02P21/13H02P21/22H02P21/00H02P21/24H02P25/024H02P27/08H02P27/12
CPCH02P21/05H02P21/13H02P21/22H02P21/0007H02P21/24H02P25/024H02P27/085H02P27/12H02P2207/05
Inventor 丁世宏王磊马莉
Owner JIANGSU UNIV
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