Sliding mode active disturbance rejection control method and system based on simulated annealing particle swarm algorithm

Abstract

The invention discloses a sliding mode active disturbance rejection control method and system based on a simulated annealing particle swarm algorithm. The method comprises the following steps of establishing a speed ring second-order active disturbance rejection model of a permanent magnet linear synchronous motor; combining the double-power reaching law and the rapid reaching law to obtain an improved rapid double-power reaching law; and obtaining a second-order speed loop improved sliding mode active disturbance rejection controller based on the improved fast double-power reaching law and active disturbance rejection control. Based on a simulated annealing particle swarm algorithm, parameters of the second-order speed loop improved sliding mode active disturbance rejection controller areoptimized, and technical problems that buffeting exists in PMLSM sliding mode control in the prior art, the number of parameters of active disturbance rejection control is large, adjustment is difficult, and the external disturbance resistance is poor are solved; the active disturbance rejection controller is advantaged in that the controller maintains the characteristics of an original active disturbance rejection controller, the number of to-be-adjusted parameters is reduced, smooth transition can be achieved during switching, and meanwhile good recovery performance and disturbance rejection capacity are achieved.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a sliding mode active disturbance rejection control method and system based on a simulated annealing particle swarm algorithm. Background technique [0002] Permanent Magnet Linear Synchronous Motor (PMLSM) is a nonlinear, strongly coupled multivariable system, which requires high control precision and strong system stability in practical applications. The traditional PI control method cannot meet the actual requirements, and the PI parameters are set blindly and cannot be adjusted adaptively according to external changes. In contrast, the sliding mode control algorithm can adjust the voltage output according to the current state of the motor (such as deviation and its derivatives, etc.), forcing the system to move according to the predetermined "sliding mode" state trajectory. [0003] Sliding mode variable structure control is a kind of variable structure control (Variab...

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Problems solved by technology

[0007] The embodiment of the present application provides a sliding mode ADRC control method and system based on the simulated annealing particle swarm algorithm, which solves the problem of chattering in the sliding mode control of PMLSM in the prior art, and the adjustment of a large number of parameters of the ADRC Difficult technical issues with poor resistance to external disturbances

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