本文提出了绕线式感应电机转子回路电阻的斩波调节原理，设计了双环调速系统，并进行了计算机辅助设计和仿真研究。
This paper presents a chopper adapting principle of rotor's resistance of induction motor, develops a two loops speed governing system, and gives computer simulation results.
恒温系统使用智能温度和阳光感应调节单元。
The climate control system USES temperature and sun-sensing intelligent swing registers.
采用基于单片机的智能化红外感应控制系统、无线通信系统，实现自动开关桶盖并调节开盖角度、遥控垃圾桶走动、智能封袋的功能。
An infrared sensing and controlling system and a wireless communication system based on Single Chip Micyoco, which can realize some functions such as move, are adopted.
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