【摘要】 针对火电机组运行状况和负荷大范围变动的情况,该文将用微分几何法进行非线性解耦和PI调节律结合的思想引入到控制系统的设计中,并且分析了鲁棒性和实用性;另外,设计了指令处理器将外部的阶跃信号变为机组可接受的信号,且使执行机构的饱和性要求得以满足。仿真表明:当机组大范围调节时,汽包压力和输出功率能够较快地跟随指令变化,汽包水位波动也保持在规定的范围内。更多还原

【Abstract】 For varying operation conditions and electric loads over a wide range,combined with PI control law,the method of nonlinear decoupling by using differential geometry approach is introduced into the control design for boiler-turbine systems.The implementation and the robustness of the control method are analyzed.In addition,a command processor is designed to transform the external step-commands into the signals that can be applied into the boiler-turbine systems,and to meet the saturation constraints on the actuators.The process simulations show that the controlled systems can achieve a good tracking performance of the drum pressure and output power over a wide operating range,while the water level in the drum is kept within tolerance.更多还原