... 锁机高电频输出（LOCK ROTOR ALARM OUTPUT）:NO 脉宽调速（PULSE WIDTH MODULATION） :NO 温控转速（THERMAL SPEED CONTROLLED）:NO ...
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软件部分主要实现PW M脉宽调速和命令码识别。
Software part mainly realizes PWM speed adjustment and identify of command code.
介绍了直流脉宽调速实验系统的开发由来及线路，并进行了波形分析。
This paper presents the origin of the exploitation of the direct current pluse width velocity modulation educational system and its circuit, moreover, goes on the waveform analysis.
本系统采用霍尔元器件测量电动机的转速，用8051单片机实现小功率直流电动机的脉宽调速。
The system adopts Huoer elements in the motor rotation measurement and USES 8051 SCM in pulse - band speed adjustment.
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