我做spwm逆变,定时查表,正负半波分别输出驱动,桥臂死区时间3.3uS,滤波电感1.05mH,电容11uF .无反馈时,输出正弦波过零处不平滑,有些畸变.请指点迷津!!!
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/55/1861951184161092.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20');}" onmousewheel="return imgzoom(this);">
输出正弦波过零处不平滑,有些畸变
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过零处不平滑500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/55/1861951184161153.jpg');}" onmousewheel="return imgzoom(this);">
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@shifang
过零处不平滑[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/55/1861951184161153.jpg');}"onmousewheel="returnimgzoom(this);">
CCP输出波形500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/55/1861951184162175.jpg');}" onmousewheel="return imgzoom(this);">500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/55/1861951184162185.jpg');}" onmousewheel="return imgzoom(this);">
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@shifang
CCP输出波形[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/55/1861951184162175.jpg');}"onmousewheel="returnimgzoom(this);">[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/55/1861951184162185.jpg');}"onmousewheel="returnimgzoom(this);">
个人经验:死区大了点
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@shifang
是这样,取32个值时有0值,31个时去掉0值.看仿真波形,无反馈时,波形是对称的.但是我引入反馈后,您所说的波形滞后就出现了,我对PID的用法不熟悉,我觉得我的AD采样时间可能太长,因为用PWM中断时,引入比例反馈后正弦波频率变低.
使用PWM中断,半波取31个值,每个值6个脉冲.去掉0值.开环波形500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/55/1861951184203583.jpg');}" onmousewheel="return imgzoom(this);">
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@shifang
是这样,取32个值时有0值,31个时去掉0值.看仿真波形,无反馈时,波形是对称的.但是我引入反馈后,您所说的波形滞后就出现了,我对PID的用法不熟悉,我觉得我的AD采样时间可能太长,因为用PWM中断时,引入比例反馈后正弦波频率变低.
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/55/1861951184203637.jpg');}" onmousewheel="return imgzoom(this);">
放大的波形
放大的波形
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@shifang
[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/55/1861951184203637.jpg');}"onmousewheel="returnimgzoom(this);">放大的波形
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/55/1861951184203956.jpg');}" onmousewheel="return imgzoom(this);">
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