Research on temperature control system of accelerometer based on FOA
Aiming at problem of unstable output of silicon micro resonant accelerometer in complex at room temperature environment,a temperature control system of accelerometer based on improved fuzzy PID control is designed.Through thermal analysis of the heating plate and the temperature field simulation of the accelerometer,the effectiveness of the heating plate placement of the temperature control system is verified.The fuzzy PID control is optimized by fruit fly optimization algorithm(FOA)and integral separation,and the overall design of the optimized temperature control system is given.The optimization scheme is verified by setting up the experimental device of temperature control system.Compared with PID control,the improved fuzzy PID control algorithm reduces the convergence time of the temperature control system to60s,the overshoot is reduced by 9.8℃,the steady-state error is reduced to 0.1℃.Compared with no temperature control,the zero-bias stability value of accelero-meter is decreased by 71.4% after 20 minutes of starting at a constant temperature of 40℃.The experimental result show that the temperature control system based on improved fuzzy PID control can effectively improve the precision of temperature control.
accelerometertemperature control systemPID controlfruit fly optimization algorithm(FOA)finite element simulation
万方数据
维普
