一种基于高频脉冲插值的角加速度测量系统  

Anglular Acceleration Measurement System Based on Interpolation with High-frequency Pulses

作　　者：赵浩[1] 童佳[1] 王春龙 

机构地区：[1]嘉兴学院机电工程学院,浙江嘉兴314001 [2]柳州市华航电器有限公司,广西柳州545616

出　　处：《成组技术与生产现代化》2010年第4期45-49,共5页Group Technology & Production Modernization

基　　金：嘉兴市科技局支持项目(2010AY1091);嘉兴学院重点科研支持项目(70110007L)

摘　　要：设计了一种角加速度测量系统.测量方法是通过高精度光栅和红外光电管获取转速信号,再对转速信号进行高频脉冲插值,从而把转速信号转化为高频脉冲数,对高频脉冲数处理后得到转轴的角加速度.测量系统采用FPGA与单片机相结合的模式,FPGA用于产生高频脉冲、对转速信号插值,并对插值后的信号进行计数,单片机读取计数结果并进行处理.实验验证表明,该角加速度测量系统有较高的测量精度.并通过理论分析找到了影响系统测量精度的原因.An angular acceleration measurement system is designed,the speed signal is acquired through grating and infrared photocell,then interpolation speed signal with high-frequency pulses,so as to convert speed to pulses,the shaft angular acceleration is received by processing pulses.This measurement system combined with FPGA and SCM,the function of FPGA are generating pulses、interpolating speed signal and counting the pulses,the result of count is processed by SCM.The high accuracy of measurement system is verified accord to the test,and the causes of errors are received by theoretical analysis.

关 键 词：光栅 高频脉冲 角加速度 FPGA 单片机 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]