对基于积分控制的数模混合对消系统进行了建模与理论分析,研究了其稳定性、暂态特性和稳态特性,为了兼顾系统的收敛速度和稳态误差,提出了一种先比例后积分的控制策略,搭建了数模混合对消系统的硬件平台,实验结果验证了策略的可行性和有效性。
An interference cancellation system model with digital-integration control was built which considering the delay of the digital controller consuming in sampling,computing and outputting.The stability condition,transient characteristic,and steady-state characteristic are analyzed.A proportion-integration control is proposed with consideration to the convergence time and the steady-state error.An experimental platform is set up to demonstrate the feasibility and effectiveness of the digital-analog hybrid control.