实现smith圆图显示和阻抗匹配，能够解决传输线阻抗匹配问题,The realization of smith chart display and impedance matching, transmission line impedance matching to solve the problem

先进PID:Smith预估器纯滞后补偿，通过与PID控制器并接，来抵消实测滞后的影响-Advanced PID: Smith Predictor time delay compensation, with the PID controller and then to offset the impact of the measured hysteresis