Double-permanent magnet synchronous motor chaos synchronization control method based on extended state observer

A permanent magnet synchronous motor, synchronous motor technology, applied in motor generator control, electronic commutation motor control, control system and other directions, can solve the problems of sliding mode chattering, unmeasured disturbance, easy to generate chattering and so on

Inactive Publication Date: 2016-08-10
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0005] In order to realize the synchronous control of the permanent magnet synchronous motor, and overcome the disadvantages of the existing technology that some system states and disturbances cannot be measured, and the traditional sliding mode control method is prone to chattering problems, ...

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  • Double-permanent magnet synchronous motor chaos synchronization control method based on extended state observer
  • Double-permanent magnet synchronous motor chaos synchronization control method based on extended state observer
  • Double-permanent magnet synchronous motor chaos synchronization control method based on extended state observer

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Embodiment Construction

[0079] The present invention will be further described below in conjunction with the accompanying drawings.

[0080] Referring to Figure 1- Figure 6 , a chaotic synchronous control method for dual permanent magnet synchronous motors based on extended state observers, including the following steps:

[0081] Step 1, establish the chaotic model of the permanent magnet synchronous motor system shown in formula (1), and initialize the system state and related control parameters;

[0082]

[0083] in, are the state variables, which represent the direct-axis and quadrature-axis stator currents and the rotor angular frequency, respectively; and Indicates the stator voltage of the direct axis and the quadrature axis; is the external torque; σ and γ are constant parameters, where , the external torque Then formula (1) can be rewritten as

[0084]

[0085] make Then formula (2) is rewritten as

[0086]

[0087] where x 1 ,x 2 ,x 3 is the state variable, σ and...

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Abstract

A double-permanent magnet synchronous motor chaos synchronization control method based on an extended state observer comprises the steps of building a chaos model of a permanent magnet synchronous motor system, defining a synchronization error system, designing a nonlinear extended state observer, and designing an adaptive sliding mode controller. Through coordinate transformation, the chaos model of the permanent magnet synchronous motor system is built, and the synchronization error system is defined. The nonlinear extended state observer is designed to estimate and compensate uncertain items and external disturbance in the system. The adaptive sliding mode controller is designed to ensure that the state error between master and slave systems is stabilized quickly and converges to zero. Finally, synchronous control of the system is realized. The influence of chaos phenomenon and external disturbance in the system is compensated, the chattering problem of the traditional sliding mode control method is improved, the robustness of the system is enhanced, and chaos synchronization control of a double-permanent magnet synchronous motor system is realized.

Description

technical field [0001] The invention relates to an adaptive chaos synchronous control method for a double permanent magnet synchronous motor based on an extended state observer, which is suitable for the chaos control of the motor. Background technique [0002] Permanent magnet synchronous motor (permanent magnet synchronous motor, PMSM) is a typical multivariable, strongly coupled nonlinear system, which is widely used in various high-performance systems such as robots, aerospace vehicles, and servo turntable control. However, studies have shown that PMSM has serious chaotic characteristics, which leads to irregular operation of the motor, affects the stability of the motor, and increases the loss of the motor, seriously reducing the service life of the motor. The double permanent magnet synchronous motor is a typical chaotic synchronous device. The driving system drives the driven system based on a coupling signal to realize the synchronization of the coupled chaotic syste...

Claims

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Application Information

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IPC IPC(8): H02P21/14
Inventor 陈强罗鹏陶亮罗泽琪
Owner ZHEJIANG UNIV OF TECH
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