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利用ARM技术,设计了捷联惯导系统。为了提高惯导系统的稳定性,需要对陀螺信号的零位进行校正以及对漂移进行抑制。首先对加速度传感器、磁场传感器、陀螺输出的信号进行采样与滤波,尤其在对陀螺信号的处理过程中,需要设计一个高性能、低运算量的低通数字滤波器,并合理设计信号调理电路,以提高敏感器件的工作效率和有效抑制器件所引起的零位漂移。实验结果表明,零位漂移≤0.1(°)/s/h,其他的多项技术指标也达到了应用的标准。
Using ARM technology, the SINS was designed. In order to improve the stability of the inertial navigation system, the zero of the gyro signal needs to be corrected and the drift suppressed. First of all, the accelerometer, magnetic field sensor, gyro output signal sampling and filtering, especially in the gyro signal processing, the need to design a high performance, low computational complexity of the low-pass digital filter, and the rational design of signal conditioning circuit, In order to improve the working efficiency of the sensitive device and effectively suppress the zero drift caused by the device. The experimental results show that the zero drift ≤ 0.1 (°) / s / h, the other a number of technical indicators have reached the application of standards.