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系统论述了汽车底盘故障诊断仪的基本原理与设计思想。在转速跟踪选频诊断的基础上，该仪器能完成对多种车型底盘传动系的主要部件故障进行现场监测和诊断，并能自动显示诊断结果。大量现场实验证明了该仪器的实用性和有效性。
The paper systematically discusses the basic principle and design idea of automobile chassis fault diagnosis instrument. Based on the speed tracking frequency selection diagnosis, this instrument can finish the on-site monitoring and diagnosis of the main components of the chassis transmission system of various models and can automatically display the diagnosis results. A large number of field experiments show that the instrument is practical and effective.