The intention of this paper is to design an electronic load to replace the actual controlled objects, with which it is conceivable to test performance and adjust parameter of the controller by performing the suspension experiment in half material object emulation. 本文的目标是设计一个电子负载来替代悬浮控制器的实际被控对象,用半实物仿真的形式做悬浮试验,进行控制器的性能测试和参数调节。