Chaos Analysis And Control Of Permanent Magnet Linear Wave Power System

In today's era of rapid expansion of energy demand and the decline of traditional energy sources,wave energy is a promising new renewable energy source that needs to be developed.A large number of experts and scholars at home and abroad have a positive attitude towards the broad prospects of wave energy,and carry out continuous research and exploration.Wave energy is abundant in the sea,and its energy can provide sufficient renewable energy for human production.Wave energy has high temperature conditions,high energy density,high predictability,and other high-quality conditions that wind energy,solar energy,and other renewable clean energy sources do not have.It has very high development potential and utilization value.The characteristics of the Lorenz chaotic model are analyzed by classical chaotic channels and Li-Yorke chaos definition.In order to establish the chaotic dynamic model of permanent magnet linear synchronous motor system(PMLSM),the coordinate system of PMLSM mathematical model is transformed by Clarke-Park method,and the ideal mathematical equation of the system under static d-q axis coordinate system is obtained.The mathematical model of the PMLSM system with edge effect,and the evolution of the chaotic dynamic model of the model by time-scale and affine transformation,the Lorenz chaotic dynamic model of PMLSM is obtained.The Wolf algorithm is used to calculate the maximum Lyapunov exponent spectrum,and the chaotic motion domain of the motor is determined to verify that chaos exists in the PMLSM system.In order to avoid the PMLSM chaotic dynamic system entering the chaotic motion,based on the feedback decoupling control to reduce the chaotic system,combined with the Lyapunov stability criterion,the control rate design of the chaotic motion model of the PMLSM dynamic system is proposed,and a decoupling is proposed.Sliding mode chaos control strategy,coupled with adaptive sliding mode chaos control strategy under decoupled sliding mode chaos control strategy,can improve the ability of real-time correction of uncertain system parameters.On the premise of stability,the dependence on the parameters of the power system is reduced.The wave environment is a working environment with complex changes and multi-factor coupling.The PMLSM chaotic dynamic system will fall into the repeated beating of various environmental variables in this environment.It is necessary to reduce thedependence of the decoupled adaptive sliding mode chaotic controller on the control parameters.Sexuality,thereby improving the controller's compatibility with environmental changes.In order to get rid of the current situation of adjusting the control parameters,the PSO non-deterministic control algorithm is introduced into the designed PMLSM adaptive sliding mode controller.The iterative optimization can quickly find the control parameters that adapt to the control conditions,and effectively compensate the control parameters.The shortcomings of the device to adjust the coarse precision of the control parameters.