知识与财富的链接
在转台的可靠性设计中, 常用测速机输出作为转台限速报警的触发信号, 但传统的测速机在安装、成本及精度上都不具有优势。利用美国AD 公司生产的AD650 芯片,对被广泛用于转台测角系统中的Heidenhain 公司的RON886C 型增量式旋转编码器 信号进行电压频率(V/ F) 和频率电压(F/V) 转换, 实现利用编码器输出模拟测速机电路, 不仅可以满足限速保护要求,并且较测速机具有成本低,安装使用方便,且精度较高的 优点,在实际应用中效果良好。
Tachometer output is used as a trigger signal of turntable overspeed alarm commonly in reliability design of the control system. Assembly mode, economic cost and accuracy of tachometer are not the best. Use the chip of AD650, for angle encoder output signal, design the circuit conduct voltage to frequency and frequency to voltage conversion, realize the simulation of tachometer. That not only meets the requirement of speed- limit protection, but also has lower cost, higher precision and is convenient in practical use.
