摘要
对瞬时转速的滤波方法进行了分析对比 ,认为 FIR低通滤波器不适用于对瞬时转速曲线的滤波。推荐采用 6阶巴特沃思低通滤波器对瞬时转速进行滤波。
Lowpass FIR digital filter can filter high frequency noise and has little effect on low frequency disturbances.Therefore it is not suitable for transient speed measurement.Compared with Chebyshev lowpass filter,Butterworth lowpass FIR digital filter gives better results for suppressing low frequency disturbances,and 6'th order Butterworth lowpass digital is thus recommended for transient speed measurements.
出处
《内燃机学报》
EI
CAS
CSCD
北大核心
2001年第4期342-344,共3页
Transactions of Csice
基金
清华大学汽车安全与节能国家重点实验室开放基金资助项目
