Fuzzy PID Control of Hydraulic Continuously Variable Transmission Speed Based on Improved PSO
In order to solve the problem of low accuracy of fuzzy PID control of hydraulic CVT,a fuzzy PID control method based on improved particle swarm(PSO)optimisation is designed,and the difference in response performance between sinusoidal and step signal in the system is analysed by simulation.The results show that under the step signal,the optimised fuzzy PID controller with improved PSO algorithm can achieve a good tracking effect between the motor speed and the target motor speed,and the overshooting amount can be adjusted in 1 s only.Under the sinusoidal signal,the maximum tracking error of the optimised fuzzy PID controller with improved PSO algorithm is 3％,which has the advantages of low overshoot and high robustness,and the developed hydraulic CVT can meet the efficient and accurate tracking effect of motor speed.
hydraulic CVTimproved particle swarm algorithmfuzzy PIDspeed control
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