Finite Time Position Tracking Control And Hardware In The Loop Experiment Verification For Electronic Throttle

The electronic throttle is an important part of the automobile engine,which controls the amount of air entering the engine cylinder.The quick and accurate position control of electronic throttle plate is beneficial to improve the performance of the engine,and improve vehicle driving safety,the driver's driving comfort and fuel economy,and reduce the emission of harmful gas in automobile exhaust.Because of the nonlinearity and the existence of uncertain parameters,the difficulty of controlling the electronic throttle is increased.In this paper,the following research is done on the position tracking control of electronic throttle system with nonlinear and parametric uncertainties to improve the response speed of the system:Based on the analysis of the structure of the electronic throttle system,a mathematical model for the design of the controller is established.According to the parameter uncertainty of the system,particle swarm optimization algorithm(Particle Swarm Optimization,PSO)is used to parameter identification off-line.In order to avoid the particles fall into local optimum,the variation mechanism is added for POS.In order to further improve the dynamic response speed of the system,a finite time servo controller(Finite Time Servo Control,FTSC)is designed by using Backstepping and power integration technique.Considering the off-line parameter identification has the problem of operation capacity and time-consuming.After the further research,a adaptive finite time servo control(Adaptive Finite Time Servo Control,AFTSC)is designed by using the adaptive control to estimate the system parameters online.The finite time convergence guarantees the rapidity of the system response,and the parameters of the adaptive estimator can adjust the parameters of the controller in real time,and the adaptive law guarantees the robustness of the system under different conditions.The validity of the controller is verified by comparing with the controller proposed in the existing literature in the MATLAB/Simulink.In order to further illustrate the practical application performance of the controller,the hardware in the loop simulation platform based on dSPACE is experimentally verified.The simulation and experimental results show that the two controllers,FTSC and AFTSC,make the electronic throttle system achieve fast and accurate position tracking control.