摘要
为了对转台进行现场校准,设计了一套基于MSP430单片机的高精度转台角速率校准系统,实现了对速率转台的高准确度角速率测量校准,并给出了测试实例。该系统采用定时测角法,用高准确度恒温温补晶振作为时间基准时钟,用单片机控制正交解码芯片HCTL-2032,对圆光栅传感器输出的正交信号进行解码计数,同时设计了硬件周期同步电路,保证了系统的等精度测量,最后由上位机应用软件处理数据。校准结果表明:在超低转速标准装置上进行角速率(0.001~600°/s)校准,在定角间隔为360°时,角速率误差最小为-1.9×10^(-7)。
In order to calibrate turntables on site,a high⁃precision angular rate calibration system based on MSP430 was designed to achieve high⁃precision angular rate measurement,and test examples were presented.The system adopts the timing angle measurement method,sets thermostat TCXO clock as time reference,and uses MCU controlled HCTL-2032 to decode and count the orthogonal signal output by the circular grating sensor.In the meantime,the hardware periodic synchronization circuit was designed to ensure the equal precision measurement of the system.Finally,the data was processed by the application software of the upper computer.The calibration results show that when calibrating the angular rate ranged from 0.001~600°/s on the ultra-low speed standard device,the lowest angular rate error is-1.9×10^(-7) at 360°interval.
作者
林晓钢
杨锦杰
高潮
LIN Xiaogang;YANG Jinjie;GAO Chao(Key Laboratory of Optoelectronic Technology and Systems of Ministry of Education of China,Chongqing University,Chongqing,400030;China National Defense Science and Technology Industry 5012 Second Level Metrology Station,Chongqing 401120,China)
出处
《计测技术》
2022年第1期45-50,共6页
Metrology & Measurement Technology
基金
国家重点研发计划(2020YFC1522900)。
关键词
角速率校准
转台校准
周期同步
解码计数
MSP430
angular rate calibration
turntable calibration
periodic synchronization
decoding count
MSP430
