摘要
依据一种解决C-EPS噪声问题的一般方法,得到了失效件EPS噪声声压级的频率特征;为了解决此噪声,研究了一个串联模式的滤波器结构,包含低通滤波器和二阶的陷波滤波器,低通滤波器主要为了过滤噪声,而采用陷波滤波器在特定的频率成分处增加相位超前来抵消低通滤波器的相位延迟,从而保证系统稳定性。这种兼顾噪声和稳定性的滤波器结构可以作为解决由于控制信号带来的EPS噪声问题的一般方法。
A generic method for dealing with the noise issue of C-EPS was applied to obtain the frequency-domain character of noise.According to the feature,a cascade-mode filter with low pass and notch filter was studied.Low pass filter is mainly used to filter noise,and notch filter is used to increase the phase advance at a specific frequency component to offset the phase delay of low pass filter,so as to ensure the stability of the system.This filter structure with both noise and stability can be used as a common method to solve the noise issue in EPS caused by the noise in control loop.
作者
夏志军
李坤
XIA Zhijun;LI Kun(School of Automotive Studies,Tongji University,Shanghai 201804,China;Nexteer Automotive (Suzhou) Co.,Ltd.,Suzhou Jiangsu 215024,China)
出处
《汽车零部件》
2019年第1期32-35,共4页
Automobile Parts
