针对LPG电喷发动机过渡工况空燃比难于精确控制的特点，提出了一种将改进Elman神经网络和常规 PI控制算法相结合的空燃比控制方法.其中Elman神经网络用于实现无传输延迟空然比信号的预测，常规PI控制器利用预测信号实现过渡工况下空然比的实时反馈控制.-LPG EFI engine for transient air fuel ratio is difficult to precisely control the characteristics of the improved Elman p

针对双容水箱大滞后系统，采用PID方法去控制。首先对PID控制中各参数的作用进行分析，采用根轨迹校正、伯德图校正的方法，对系统进行校正。最后采用神经网络PID控制的方法-Large time delay for two-capacity water tank system, using PID method to control. First, the parameters of the PID control in the role of analysis using root locus c