2015/10/16 M369-系统模型、分析与控制 5.2机电系统建模 School of Mechanical Engineering ME369-lecture 5.2 Shanghai Jiao Tong University Fall 2015 机电(electromechanica和磁力(magnetomechanical)系统 运动、力作用下的电、磁变化或电、磁变化引起的运动和力 [例] 电阻 电位计 磁场 DC电机 电容 加速度计、梳状驱动 压电(piezoelectric) 加速度计 School of Mechanical Engineering ME369-lecture 5.2 Shanghai Jiao Tong University Fall 2015 1
2015/10/16 1 ME369-lecture 5.2 Fall 2015 School of Mechanical Engineering Shanghai Jiao Tong University 5.2 机电系统建模 ME369-系统模型、分析与控制 ME369-lecture 5.2 Fall 2015 School of Mechanical Engineering Shanghai Jiao Tong University 机电（electromechanical)和磁力（magnetomechanical）系统 运动、力作用下的电、磁变化 或 电、磁变化引起的运动和力 [例] 电阻 电位计 磁场 DC 电机 电容 加速度计、梳状驱动 压电（piezoelectric) 加速度计
2015/10/16 DC电机结构 定子（磁体） 转子 电 换向器R,一00 外壳及支承 School of Mechanical Engineering ME369-lecture 5.2 Shanghai Jiao Tong University Fall 2015 例1DC电机驱动 L 000 B.O di+Ri+E时=e0 La dt J0+B0=Tm-TL Tm=KTi E时=K。0 School of Mechanical Engineering ME369-lecture 5.2 Shanghal Jiao Tong University Fall 2015 2
2015/10/16 2 ME369-lecture 5.2 Fall 2015 School of Mechanical Engineering Shanghai Jiao Tong University DC 电机结构 m m 换向器 定子(磁体） 电枢 外壳及支承 轴 emf u a i R a L a 转子 N S B cf cf ci B c v cemf u ME369-lecture 5.2 Fall 2015 School of Mechanical Engineering Shanghai Jiao Tong University [例1]DC电机驱动 R a L a B m m J m i u a i emf u m L B m m
2015/10/16 T例1DC电机驱动（续） 1。 云+BT U- 口.=F4B+R.+R瓦+KK++B+R+风B+K Ls+R -TL School of Mechanical Engineering ME369-lecture 5.2 Shanghai Jiao Tong University Fall 2015 例2DC电机驱动并机械传动 直滴电机及其塑动地路 R L 0. B B School of Mechanical Engineering ME369-lecture 5.2 Shanghai Jiao Tong University Fall 2015 3
2015/10/16 3 ME369-lecture 5.2 Fall 2015 School of Mechanical Engineering Shanghai Jiao Tong University DC Motors [例1]DC电机驱动（续） —example I (continue) - + m m L - + Ui Uemf Kb 1 L s R a a K 1 m m J s B a I 2 2 ( ) ( ) a a m i L a m a m a m a m b a m a m a m a m b K L s R U L J s L B R J s R B K K L J s L B R J s R B K K ME369-lecture 5.2 Fall 2015 School of Mechanical Engineering Shanghai Jiao Tong University DC Motors [例2]DC电机驱动并机械传动 —example II R a L a B2 B m N1 N2 2 J m J 2 m i u a i emf u m 2 B2 2 L B m m 直流电机及其驱动电路 2 1 N N N 传动比
2015/10/16 例2]DC电机驱动并机械传动（续） T 母 1 Ls+R Js+B U K School of Mechanical Engineering ME369-lecture 5.2 Shanghai Jiao Tong University Fall 2015 例3]喇叭 手i School of Mechanical Engineering ME369-lecture 5.2 Shanghai Jiao Tong University Fall 2015 4
2015/10/16 4 ME369-lecture 5.2 Fall 2015 School of Mechanical Engineering Shanghai Jiao Tong University [例2]DC电机驱动并机械传动（续） - + m m L - + Ui Uemf Kb 1 L s R a a K 1 m m J s B 1 N 2 J s B 1 N 2 2 a I ME369-lecture 5.2 Fall 2015 School of Mechanical Engineering Shanghai Jiao Tong University [例3]喇叭
