节点文献
车用内燃机快速检测与诊断系统中瞬时转速滤波方法的探讨
Study on Filtering Method of Transient Rotational Speed of Automotive Engine
【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。
【Abstract】 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.
【关键词】 内燃机;
瞬时转速;
数字滤波;
【Key words】 Internal combustion engine; Transient engine speed; Digital filter;
【Key words】 Internal combustion engine; Transient engine speed; Digital filter;
【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
- 【文献出处】 内燃机学报 ,Transactions of Csice , 编辑部邮箱 ,2001年04期
- 【分类号】TK406
- 【被引频次】11
- 【下载频次】156