At transient measurement

temperature sensor measurement lag can impacted the accuracy of measurement system.An approach that can widen the working frequency band and reduce the dynamic error is reported by using compensator of sensor dynamic inverse model.With this approach a compensator of dynamic inverse model can be realized without knowing the dynamic characteristics of temperature sensor

the parameter of the compensator is optimized by PSO algorithm according to the measurement data of the step response of the sensor and reference model.The test signals can overcome sensor measurement lag after compensation calculating.Experimental results show that the approach is effective.