光栅扭矩传感器的信号电路设计  

Design of signal circuit used for grating torque sensor

作　　者：喻洪麟[1] 刘旭飞[1] 吴永烽[1] 

机构地区：[1]重庆大学光电技术及系统国家教育部重点实验室,重庆400044

出　　处：《光电工程》2005年第8期93-96,共4页Opto-Electronic Engineering

基　　金：国家自然科学基金资助项目(50079032)

摘　　要：针对水轮机主轴扭矩检测系统中的光栅扭矩传感器,设计了一种新型电路。采用ispPAC10芯片,通过器件编程的方式,实现对模拟信号的放大、整形和滤波,避免了传统模拟电路调试的麻烦。利用CPLD工作频率高的特点,进行高精度细分,结合MCU系统,完成对数据的处理。实验证明,以这种新型电路对扭转角位移进行测量时,精度高达0.001o/m,实现了扭矩的实时、高精度测量。A new circuit used for the grating torque sensor of hydraulic turbine＇s principal axis system is designed. The output analog signal of the grating torque sensor is magnified, shaped and filtered by ispPAC10 on the basis of component program, which gets rid of traditional circuit＇s complex debugging. An interpolation algorithm fully making use of the characteristic of CPLD high frequency is designed and the output data is managed with MCU. Experiments prove that the precision of torsion displacement reaches 0.001°/m. Consequently high precision detection of torque is implemented in real time.

关 键 词：光栅扭矩传感器 信号处理 电路设计 ISP 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]