自抗擾pH控制方法及其應(yīng)用研究

本文介紹一種自抗擾pH 控制方法。針對化工過程中pH 值中和具有嚴(yán)重非線性,因而
控制十分困難。當(dāng)未知非線性系統(tǒng)中存在強干擾時,自抗擾控制器能表現(xiàn)出很強的適應(yīng)性和魯棒性. 為此,采用二階自抗擾控制器來控制這一復(fù)雜非線性過程,并結(jié)合工程實際和理論分析,對pH 值中和過程進(jìn)行仿真，相比傳統(tǒng)PID 控制，能達(dá)到理想控制效果。
關(guān)鍵詞：pH控制；自抗擾控制器；PID控制
Abstract: This paper introduces an auto-disturbance-rejection pH control method, for pH
neutralization might be very difficult to control due to their highly nonlinear nature. An
Auto-Disturbance-Rejection-Controller (ADRC) can be used for controlling a broad range of
uncertain systems in the presence of strong disturbances, and still exhibits excellent adaptability and robustness. The paper address the problem of the utilization of a two-order ADRC for the abstract nonlinear process mentioned above. Simulation studies for pH neutralization substantiate that the ADRC controller can provide much better set-point tracking and disturbance rejection than traditional PID controllers.
Keyword: pH-control；auto disturbance rejection controller；PID Control