火电机组免疫单神经元非线性控制方法仿真研究

Simulation Research of Immune Single-neuron Nonlinear Control Method in Boiler-turbine System

针对火电单元机组控制系统,提出一种免疫单神经元非线性控制策略,并设计出一种新的非线性输出跟踪控制器。该控制器由稳定逆系统和免疫单神经元自适应PID反馈控制器组成。前者是根据逆系统方法求取的,用于提高系统的响应速度;而后者,则是利用生物免疫反馈规则,使神经元比例系数可以随工况的变化自动进行调整,用于提高系统的稳定性。通过不同负荷下的仿真结果表明,该控制策略具有较强的动态解耦能力,鲁棒性,自适应能力以及快速稳定跟踪能力。

A new method of immune single neuron nonlinear control was proposed to control the boiler-turbine unit system, and a new nonlinear output tracking controller was designed The controller is composed of stable inversion and immune single-neuron adaptation PID feedback controller The former is solved to improve the load-following capability by inversion system method, and the latter is utilized to improve the stability and robustness of the whole system, in which the neuron proportion coefficient can regulate by itself by the law of immunity feedback response in biology. Simulation results with different load-followings show that the control system is featured by strong ability of dynamic decoupling, robustness, self-adaptability, and fast response and stability tracking capability.