PMSM inversion terminal sliding mode control method

A technology of terminal sliding mode and control method, which is applied in control systems, control generators, vector control systems, etc., can solve problems such as being easily affected by external disturbances, difficult to meet high-performance control requirements, and complex system design, etc., to achieve Improve the ability to resist load disturbance, improve steady-state performance, and improve the effect of robustness

Pending Publication Date: 2019-05-07
鸿翌科技有限公司
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Problems solved by technology

[0003] In order to improve the dynamic and static performance, the backstepping controller and fuzzy control are combined and applied to the speed tracking control of the permanent magnet synchronous motor to achieve better dynamic and static performance, but the system design is more complicated and requires rich experience
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  • PMSM inversion terminal sliding mode control method
  • PMSM inversion terminal sliding mode control method
  • PMSM inversion terminal sliding mode control method

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[0038] 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, and do not limit the protection scope of the present invention.

[0039] The embodiment of the present invention provides a method for PMSM inversion terminal sliding mode control. The inversion sliding mode controller outputs d-axis voltage and q-axis voltage, which are transformed into direct-axis voltage U through Park inverse transformation. a and quadrature voltage U β , through the vector control (SVPWM), it is sent to the inverter, and the inverter outputs A, B, C three-phase current, firstly through the Clark transformation, the three-phase current is transformed into a static i β and i α , i β is the current on the β axis, ...

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Abstract

The invention provides an inversion terminal sliding mode control method based on a load torque observer for a permanent magnet synchronous motor (PMSM) speed control system. An extended state observer is used to estimate a load torque in real time, and the real-time estimated load torque is introduced into the output of the speed loop to give a q-axis current to form feedforward compensation so as to enhance the ability of the system to resist load disturbance. Aiming at the perturbation problem of motor parameters in the design of current loop, the idea of high-order terminal sliding mode control is introduced, and the high-order terminal sliding mode control method of d and q currents is designed, so that the current tracks the current given value in the limited time to ensure the stability of the speed control system and achieve robustness to motor parameter perturbation.

Description

technical field [0001] The invention relates to a method for inversion terminal sliding mode control based on electric vehicle PMSM, in particular to an inversion terminal sliding mode control method based on a load torque observer. Background technique [0002] The full name of PMSM is permanent magnet synchronous motor, that is, permanent magnet synchronous motor. Motion control is the key demand of many household appliances, such as dryers, washing machines, refrigerators, air conditioners and various kitchen appliances. In order for these devices to work at their optimum performance, new and improved motor control technology is key. In addition, not only does increased energy efficiency benefit everyone, new technologies can also offer additional benefits such as smoother work and dramatically reduced noise levels. [0003] In order to improve the dynamic and static performance, the backstepping controller and fuzzy control are combined and applied to the speed tracking...

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Application Information

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IPC IPC(8): H02P21/00H02P21/13H02P21/20H02P27/08
Inventor 赵博雅
Owner 鸿翌科技有限公司
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