摘要
基于内模控制理论,针对自适应逆控制系统中非最小相位对象逆模型的不稳定性,提出了一种新的求解方法,克服了传统方法求取对象模型延时逆的不足。分析了内模控制和自适应逆控制的关系,设计了基于内模控制原理的系统结构,分析了系统的稳定性和算法的收敛性,仿真结果表明这种方法的正确性。将该方法应用于电厂再热汽温控制系统进行仿真研究,结果表明该方法的控制性能优于常规串级控制系统。
Based on internal model control (IMC) principle, a new arithmetic is proposed to overcome the intrinsic defect of a nonminimum-phase inverse plant modeling. The control structure is designed based on the internal model control. The stability of system and convergence of arithmetic are analyzed. Simulation results Verify the effectiveness of the proposed method. The control system can be adapted to nonlinearity and time-varying characteristics of plant. A simulation is carried out for power plant reheat steam tem- perature control system. Simulation results show that the control system performance is better than that of the conventional cascade control system.
出处
《现代电力》
2008年第5期63-68,共6页
Modern Electric Power
关键词
内模控制
自适应逆控制
有限长脉冲响应
非最小相位对象
时延逆模型
internal model control (IMC)
adaptive inversecontrol (AIC)
finite impulse response (FIR)
nonminimum-phase plant
delayed inverse modeling