摘要
针对输出幅频特性符合正（余）弦关系的里程表及转速表，文中提出了采用数字式ＰＷＭ技术驱动双线圈的新方案。文中介绍了双模式ＰＷＭ的控制特性及系统的组成工作原理，并且对Ｍ／Ｔ测速方法、查表法、线性插值法与平滑滤波相结合的算法进行了研究。
For the speedometer and the odometer whose amplitude frequency relation according with sine(cosine) function,a new method that crossed coil is driven by single chip microcomputer using digital PWM method is presented.The control property of double mode PWM,the composition and the principle of the system are introduced.Furthermore,the M/T speed measuring method,the calculating method combing table looking up with linear interpolation and smooth filtering are studied in detail.The errors are also analyzed.
出处
《光电工程》
CAS
CSCD
1996年第3期64-68,共5页
Opto-Electronic Engineering
关键词
计算机控制
转速表
里程表
汽车部件
Pulse width modulation,Microcomputer control,Speedometers, Odometers, Automobile component.
