利用LabVIEW 虚拟仪器开发平台，设计了一个程序，可以对３阶以内的线性

被控对象快速的确定PID 控制器的各个参数，完成PID 控制器的设计。同时，可以给出控

制系统开环或者闭环的阶跃响应。-This example is intended to give a basic introduction to the

TrueTime simulation environment. The example considers simple PID

control of a DC-servo process. The process is controlled by a

controller task implemented in a TrueTime kernel block. Four different

implementations of the controller task are provided.