摘要
为了有效去除扭转振动测试数据采集中的坏点,针对磁电式传感器采集的类似余弦波的电压信号,提出了一种不断向零电压靠近的双线逼近算法,给出了转速计算的谐次提取算法,研究了瞬时转速各阶谐波函数的变化规律。1.4 L四缸汽油机的扭振测试结果表明,该方法具有较高的适应性与稳定性。
In order to effectively remove the bad points collected in the torsional vibration test data,we propose a two-line approximation algorithm for continuously approaching zero voltage for similar cosine wave voltage signals collected by magnetoelectric sensors.A harmonic extraction algorithm for rotational speed calculation is given,and the change rule of the harmonic function of each order of instantaneous rotational speed is studied.The torsional vibration test results of the 1.4 L four-cylinder gasoline engine show that the method has high adaptability and stability.
作者
田中旭
李广洲
王恒宇
Tian Zhongxu;Li Guangzhou;Wang Hengyu(Shanghai Ocean University,Shanghai 201306;Shanghai Jiao Tong University,Shanghai 200240)
出处
《汽车技术》
CSCD
北大核心
2020年第7期40-44,共5页
Automobile Technology
基金
上海海洋大学博士启动基金项目(A2-0203-00-100330)。
关键词
瞬时转速
扭振
坏点
双线逼近法
谐次提取
Instantaneous speed
Torsional vibration
Bad point
Double line method
Harmonic extraction
