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Permanent magnet synchronous motor chaos control method based on nonlinear expanded state observer

A permanent magnet synchronous motor and expansion state observation technology, which is applied in the direction of observer control, AC motor control, electronic commutation motor control, etc., can solve the problem that the chaotic state is difficult to measure accurately

Active Publication Date: 2014-12-10
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0004] The invention aims to overcome the problems that the permanent magnet synchronous motor presents chaotic characteristics under certain parameter conditions and the partial chaotic state is not easy to be accurately measured, and provides a permanent magnet synchronous motor adaptive chaos control method based on a nonlinear expansion state observer, which eliminates the system All state fully measurable constraints

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  • Permanent magnet synchronous motor chaos control method based on nonlinear expanded state observer
  • Permanent magnet synchronous motor chaos control method based on nonlinear expanded state observer
  • Permanent magnet synchronous motor chaos control method based on nonlinear expanded state observer

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Embodiment Construction

[0057] Refer to attached Figure 1-5 , a chaotic control method for permanent magnet synchronous motors based on nonlinear extended state observers, including the following steps:

[0058] Step 1, establish the chaotic model of the permanent magnet synchronous motor system shown in formula (1), initialize the system state and related control parameters;

[0059] d i ~ d dt = - i ~ d + ω ~ i ~ ...

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Abstract

The invention discloses a permanent magnet synchronous motor chaos control method based on a nonlinear expanded state observer. The permanent magnet synchronous motor chaos control method comprises the steps of: building a chaos model of a permanent magnet synchronous motor system, and initializing a system state and related control parameters; through coordinate transformation, converting the chaos model of the permanent magnet synchronous motor system to be Brunovsky standard form that is more suitable for designing the nonlinear expanded state observer; designing the nonlinear expanded state observer for estimating the unpredictable system state and parameter perturbation; designing a self-adaptive sliding mode variable structure controller, improving problem about buffeting in sliding mode control, and ensuring that the chaos state of the system is rapidly and stably converged to zero according to the system state and parameter perturbation estimated by the nonlinear expanded state observer.

Description

technical field [0001] The invention relates to a chaos control method for a permanent magnet synchronous motor based on a nonlinear extended state observer, in particular to an adaptive chaos control method for a permanent magnet synchronous motor whose partial state of the system cannot be measured. Background technique [0002] Permanent magnet synchronous motor (PMSM) is a typical multivariable, strongly coupled nonlinear system, which has been widely used in high-performance systems such as robots, aerospace vehicles and servo turntable control. However, research in recent years has shown that permanent magnet synchronous motors will exhibit chaotic characteristics under certain conditions. The existence of chaotic behavior will generate irregular current noise, which seriously affects the stable operation of the system and causes inconvenience to the application of PMSM. Therefore, how to effectively control and eliminate the chaotic behavior in the permanent magnet sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/00H02P23/12H02P25/02
Inventor 陈强翟双坡王晶
Owner ZHEJIANG UNIV OF TECH
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