摘要
研究新型实用非线性自抗扰控制技术(ADRC)在电厂主汽温控制系统中的应用。ADRC的主要特点是利用非线性状态观测器(ESO)对系统模型的扩张状态(即系统模型不确定性和未知外扰的总和)进行实时估计,并在控制信号中将其补偿,具有超调小、收敛速度快、精度高、抗干扰能力强、算法简单等特点。应用自抗扰控制器,针对具有严重参数不确定性、多扰动以及大迟延的电厂主汽温被控对象设计自抗扰控制系统并进行仿真研究,结果表明自抗扰控制器的强鲁棒性和抗干扰性使得汽温控制系统在不同负荷下均获得很好的调节品质。
The new nonlinear control technology Active Disturbance Rejection Control is introduced and the application of ADRC to the main stream temperature control system is proposed. The key element of ADRC is Extended State Observer （ESO）. ESO can estimate the uncertainty of system＇s model and the total action of unknown disturbance real - timely, and compensate them via control signal. Little overshoot, high precision, fast convergence speed, strong anti - disturbance ability and simple algorithm are the characteristics of ADRC controller. The simulation of the main stream temperature control system shows that ADRC can effectively solves such problems as uncertainty of model, time - delay and multi -disturbance, has strong robustness and good anti - disturbance ability. It is evident that the proposed scheme performs very well in providing innovative solutions to practical main stream temperature control system. The simulation shows this scheme＇s effectivity and superiority.
出处
《计算机仿真》
CSCD
2006年第8期211-214,共4页
Computer Simulation
关键词
自抗扰
主汽温
鲁棒性
时滞
抗干扰
Active disturbance rejection control （ADRC）
Main stream temperature
Robustness
Time - delay
Anti - disturbance
