基于MATLAB的操纵稳定性中间位置数据处理

Handling on the center data processing based on MATLAB's stability

基于MATLAB编制了中间位置数据处理程序,通过将连续正弦曲线的首尾数据做线性拟合得到趋势误差,并对原始数据进行矫正;设计了一个无相移低通滤波器,对原始数据进行滤波,避免了信号之间的相位延迟;设计了在4个连续正弦曲线中提取指定数据范围的程序,得到了方向盘转角和方向盘力矩4条滞环曲线拟合函数,对拟合函数求跟和求导,提取了方向盘转角迟滞、方向盘力矩迟滞、中间位置转向刚度等指标;对方向盘转角和横摆角速度做互相关性计算,得到横摆角速度响应时间。结果表明:通过这些数据处理方法的运用,保证了结果的准确性,提高了数据处理效率。

The center data processing program is compiled based on MTALAB. By the end of data continuous sine curve linear fitting error trend, the original data is corrected; A low pass filter without phase shift is designed to wave filtering of raw data, it avoids the phase delay between the signals; A program is designed to extract the range of the specified data from four continuous sine curves, the fitting function of four hysteresis cures of steering wheel angle and steering wheel torque is obtained. The steering wheel angle hysteresis, steering wheel torque hysteresis, intermediate position steering stiffness and other indicators are extracted; Cross correlation calculation of steering wheel angle and yaw rate, get the yaw rate response time. Results show： Through the use of these data processing methods, ensure the accuracy of the results, improve the efficiency of data processing.