Fuzzy sliding mode control vector control system and method for permanent magnet synchronous motor
A technology of permanent magnet synchronous motor and fuzzy sliding mode control, which is applied in vector control systems, control systems, control generators, etc., can solve problems such as chattering caused by sliding mode controllers, and improve robustness and anti-interference ability Effect
Inactive Publication Date: 2019-04-09
WUHAN UNIV OF TECH
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Problems solved by technology
However, the sliding mode controller also has the disadvantage of chattering. The combination of the sliding mode variable structure controller and the intelligent control algorithm becomes an effective way to solve this problem.
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[0035] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0036] When the permanent magnet synchronous motor is at i q = 0 vector control, the traditional PI controller adopted by the speed controller is linear, the robustness is not strong enough, and the anti-interference ability is poor. The sliding mode control has the advantages of fast response and insensitivity to parameter changes and disturbances, but also has the problem of chattering, so this embodiment uses a fuzzy sliding mode controller to replace the switching part of the sliding mode control. gain To achieve the purpose of satisfying the existence conditions of sliding mode and reducing chattering. Realize the chattering reduction of sliding mode control, and improve the robustness and anti-interference ability of the control system.
[0037] This embodiment is achieved through the following technical solutions, as figure 1 As shown, a pe...
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The invention relates to the technical field of vector control of permanent magnet synchronous motors (PMSMs), in particular to a fuzzy sliding mode control vector control system and method for a PMSM. The control system comprises a PMSM module, a coordinates transformation module, a fuzzy sliding mode controller, a torque current regulator, an excitation current regulator, an SVPWM (Space VectorPulse Width Modulation) module, a three-phase inverter and a rotational speed calculation module. In the control system, a switching part of sliding mode control is replaced by the fuzzy sliding modecontroller, and a variable gain [K-caret](t) is introduced into fuzzy control, so that the aims of satisfying the existence condition of a sliding mode and reducing chattering are fulfilled, and meanwhile the high robustness and anti-jamming ability of the control system are improved.
Description
technical field [0001] The invention belongs to the technical field of vector control of permanent magnet synchronous motors, in particular to a fuzzy sliding mode control permanent magnet synchronous motor vector control system and method. Background technique [0002] Permanent magnet synchronous motors are famous for their high power density, high efficiency, high reliability, simple structure, and light weight. They are currently widely used in the fields of national economy, industrial production, and national defense and aerospace. [0003] However, the permanent magnet synchronous motor is a multivariable, strongly coupled nonlinear system. There are many unfavorable factors such as current coupling, system saturation, parameter perturbation and external disturbance, which directly affect the improvement of the performance of the control system. In order to meet the needs of practical engineering applications, it is urgent to make breakthroughs in the control methods ...
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IPC IPC(8): H02P21/00H02P21/14H02P21/18H02P27/08
CPCH02P21/0007H02P21/001H02P21/14H02P21/18H02P27/08
Inventor 胡红明端木子建曾雨张泽
Owner WUHAN UNIV OF TECH