The solar tracker has two working modes, open loop mode and closed loop one, and it consists of an imaging unit, a turntable, steppers, the subsystem of micro control unit, a computer and so on.
提出的太阳跟踪器具有开环和闭环两种工作模式，由成像单元、转台、步进电机、单片机、上位机等模块构成；
In this paper, DDC Control of double closed loop DC governing system with Z-80 Single board micro Computer is discussed.
本文对用Z—80单板机实现双闭环直流调速系统DDC控制进行研讨。
By comparing the detection result, it shows that the closed-loop stage increases the position accuracy of stepper motor, which satisfies the demand of micro-CMM rough localization platform.
检测结果表明：该系统明显地提高了步进电机的定位精度，满足了系统对于粗定位平台的定位要求。
The friction drive mechanism moves well even when driven at high frequency and with long strokes, so it can be used with open-loop control systems for micro displacement.
进给速度可通过改变驱动脉冲的频率调节，机构在高频驱动大位移动作时亦表现出准确的步进特性，可用于小型机电系统的开环进给驱动。
In order to realize a high performance closed-loop micro-accelerometer system, the study on full-differential interface circuit was taken in this paper.
为了实现高性能闭环微加速度计检测系统，本文对全差分检测电路进行了研究。
In order to realize a high performance closed-loop micro-accelerometer system, the study on full-differential interface circuit was taken in this paper.
为了实现高性能闭环微加速度计检测系统，本文对全差分检测电路进行了研究。
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