基于温度补偿倾角传感器的双轴稳定平台设计

针对高精度舰载光瞄设备隔离扰动及高稳定跟踪精度视轴的要求,研究一种基于反方向运动抵消舰艇摇摆运动的双轴机械稳定平台。采用MEMS传感器实现倾角测量,采用直流电机实现平台稳定。通过实验方法,测出MEMS传感器的温度特性,再采用分段线性插值补偿模式,在-40^+100℃范围内提高传感器的精度。采用无超调控制技术实现直流电机快速响应和平稳运动。利用改变电枢电压的方法,可以实现对电机堵转转矩的控制,从而实现带负载的角度位置控制。实验结果表明,双轴稳定平台的最大角加速度为57°/s^2,稳定平台指向复示精度达到0.1°。

Design of Two-Axis Stabilized Platform Based on Temperature Compensating MEMS Accelerometer

In order to meet the requirements of isolating disturbances and tracking accuracy of shipboard optical radar,a two-axis stabilized platform technology based on reverse direction rotation cancellation is designed.The MEMS accelerometer is used as angular measurement,and the two-axis stabilized platform control is realized by using brushless DC motors.The MEMS accelerometer is measured and compensated with linear interpolation to get high precision from-40^+100℃.The non-overshoot motor control method is to improve the system response rate.The test results show that the system realizes maximal 57°/s^2 angular acceleration and 0.1°reproduce precision.