Hammerstein模型非線(xiàn)性預(yù)測(cè)控制的研究

對(duì)于pH 中和過(guò)程的控制，由于其本身具有嚴(yán)重的非線(xiàn)性特性，因而對(duì)于此過(guò)程的控制十分困難。鑒于此，本文提出了Hammerstein 系統(tǒng)非線(xiàn)性預(yù)測(cè)控制方法，并應(yīng)用仿真和試驗(yàn)的方法分別實(shí)現(xiàn)了對(duì)pH 中和非線(xiàn)性過(guò)程的控制。研究結(jié)果表明，Hammerstein 模型非線(xiàn)性預(yù)測(cè)控制具有良好的控制效果和很強(qiáng)的穩(wěn)定性，且優(yōu)于常用的PID 控制方法。
關(guān)鍵詞：Hammerstein 模型；非線(xiàn)性控制；預(yù)測(cè)控制；pH 中和；仿真；試驗(yàn)
Abstract: The control of pH neutralization process, having highly nonlinear nature, can be very difficult to achieve. In this paper, a predictive control strategy based on the Hammerstein model is put forward, which is known as Nonlinear Predictive Control of Hammerstein models, and achieved control of pH neutralization process. Simulation and test study for a pH neutralization process indicate that predictive control based on Hammerstein models can provide much better control performance than well-tuned PID controllers.
key words: Hammerstein Models; Nonlinear Control; Predictive Control; pH Neutralization Process; Simulation; Test