期刊论文

Read-out accuracy analysis and torquer-dirver design of quartz flexible accelerometer

中文

机电工程

1001-4551

2014

31

8

1035-1039

10.3969/j.issn.1001-4551.2014.08.016

基金项目：湖南省科技厅计划资助项目（2011GK3116）

本校为第一机构

针对石英挠性加速度计全数字闭环系统设计问题，开展了对加速度计力矩器的结构和工作原理以及与加速度数据输出的关系的分析，对加速度计力矩器的驱动和加速度计的读出精度等方面进行了研究，提出了一种数字脉宽调制（PWM）电路对力矩器进行的驱动方法，该方法不仅实现PWN对加速度计力矩器的驱动，并且该PWM数字电路的占空比参数直接作为加速度数字信号输出。利用PWM数字脉冲对加速度计力矩器进行驱动实现加速度计全数字闭环读出，对加速度计全数字读出系统进行了仿真和实验测试。研究结果表明，在一定范围内，通过调整力矩器外接电阻、PWM频率和逻辑位数，全数字挠性加速度计闭环读出电路可以测...

Aiming at realizing the all-digital closed-loop system of the quartz flexible accelerometer, the torquer-dirver and read-out accuracy of the accelerometer, after the analysis of the structure and working principle of the torquer and relations between torquer-dirver and read-out accuracy, were studied. The digital pulse-width modulation （PWM）circuit has been designed, which was used to drive the torquer of the accelerometer and its duty parameters was worked as the export of the accelerometer. By the means of PWM, the all-digital closed-loop s...