Work principles of a test bench for four wheel steering are briefly discussed, including loading system, pneumatic vibratory system, steering system and electric control system. Its feasibility is analyzed.

• 摘要简要分析了4轮转向试验平台的工作原理，其中包括加载系统、气动振动系统、气动振动力系统、转向系统和电器控制系统的工作原理，并对其可行性进行了分析。