前 言 目前国内采用的转速数字显示装置(又称数字测速仪),大多都采用了类似于图(1)所示的结构原理[1 ]。当采用重复显示时,装置在一个重复周期丁cH内的工作情况[2 ],如图(2)所示。 由于转速显示装置属于测量装置,而测量装置又都是开环的,故分析研究这种装置中产生显示误差的原 Preface At present, the speed digital display device (also known as digital speed meter) adopted in China mostly adopts the structural principle similar to that shown in Fig. 1 [1]. When using repeated display, the device in a repeated cycle Ding cH within the work [2], as shown in Figure (2). Because the speed of the display device belongs to the measuring device, and the measuring device are open-loop, so the analysis of this device to produce the original display error