This paper describes the principle and performance of several kinds of electronic control systems used in buses, such as cruise control system, electromagneticretarder and global position system.
叙述客车上常用的几种电子控制系统，如巡航控制、电涡流缓速器、全球定位系统的性能特点及工作原理。
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This paper introduces the structure and working principle of electromagneticretarder used in automobiles and derives its braking torque formula, in which the relations of variables are represented.