摘要
设计了一种新型的PWM数字微加速度计自动测试平台。该技术基于AT89S52单片机,适用于重力场条件下PWM数字输出的加速度计的快速测试。系统脱离了计算机的辅助计算和控制,利用单片机自动控制测试过程,并独立完成数据的拟合计算,极大地简化了测试系统,并利用此平台完成了ADXL202E数字加速度计静态模型的辨识任务,标定了加速度计的标度因数和零偏2个重要的性能指标。该测试平台测试精度优于2mgn。
A new automatic test platform for micro-accelerometers with PWM digital output is designed. The platform,based on an AT89S52 single-chip microcontroller, is able to perform fast test of PWM output microaccelerometers at gravitational field. This platform carries out automatic control and test only with a single-chip, and completes relative calculation alone without computer＇ s aid. It simplifies the test system considerably, and accomplishes identification of the static model for ADXL202E, a PWM output digital micro-accelerometer. And two important parameters, scale factor and bias instability, can be derived from the model. The precision of the platform is above 2 mgn.
出处
《传感器与微系统》
CSCD
北大核心
2009年第2期87-90,共4页
Transducer and Microsystem Technologies
关键词
单片机
数字微加速度计
静态模型辨识
single-chip microcontroller
digital micro-accelerometer
static model identification
