基于数字鉴频器的内燃机瞬时转速延时测量法  

Measurement method of transient rotating speed based on digital frequency discriminator

作　　者：孙云岭[1] 张永祥[1] 郭文勇[1] 

机构地区：[1]海军工程大学船舶与动力学院,湖北武汉430033

出　　处：《海军工程大学学报》2006年第6期61-64,共4页Journal of Naval University of Engineering

摘　　要：将基于数字鉴频器的延时法用于内燃机瞬时转速测量.首先介绍了延时法解调电路原理,然后使用仿真手段对延时法测量的特点进行了研究.仿真结果表明,该方法能够较好地还原频率调制信号,最后经实测试验证明了测量的有效性.该方法可采用全硬件电路实现,测量设备简单,可抑制调幅因素的影响,是一种有效的瞬时转速测试方法.The delay line method based on digital frequency discriminator is used in measuring ICE instantaneous rotating speed. Firstly, the principle of delay-line demodulation circuit was introduced. Secondly, its characteristics were studied by means of simulation, whose result shows that the method can well revert the frequency modulated signals. Finally, the actual measurement proves its effectiveness. By means of hardware circuit, the effective method can control the influence of amplitude modulation with simple measuring equipment.

关 键 词：瞬时转速 延时法 内燃机 数字鉴频 

分 类 号：TK407[动力工程及工程热物理—动力机械及工程] TH824[机械工程—仪器科学与技术]