IC693PTM100/IC693PRG300RR模块
IC693PTM100/IC693PRG300RR模块
IC693PTM100/IC693PRG300RR模块
在整流逆变的过程中,同一相的上下桥不能同时导通,否则电源会短路,理论上DSP产生的PWM是不会同时通,但器件的原因PWM不可能是瞬时电平跳变的,总是梯形下降的,这样会可能使上下桥直通,为此,设一个极短的时间,上下桥都关闭,再选择性开通,避免了上下桥直通,实际控制中死区会导致控制性能变差。
PWM的上下桥臂的三极管是不能同时导通的。如果同时导通就会是电源两端短路。所以,两路触发信号要在一段时间内都是使三极管断开的。这个区域就叫做“死区”。
PWM的占空比决定输出到直流电机的平均电压,PWM不是调节电流的。PWM的意思是脉宽调节,也就是调节方波高电平和低电平的时间比,一个20%占空比波形,会有20%的高电平时间和80%的低电平时间,而一个60%占空比的波形则具有60%的高电平时间和40%的低电平时间,占空比越大,高电平时间越长,则输出的脉冲幅度越高,即电压越高。
人机界面(触摸屏)|WT205 LX700/DD256/CF512/VX
巴赫曼人机界面(触摸屏)WT205 LX800/DD512/CF512/VX
巴赫曼人机界面(触摸屏)|WT205 LX700/DD256/CF512/VX||
巴赫曼WT205/T/BE1/LX7人机界面
24V电源模块 NT255
MPC240控制器 MPC270
数字量输入输出模块 DIO280
数字量输入输出模块 DIO232
模拟量输入输出模块 AIO288
DP模块 DPM200
背板 BS212
编码器模块 ISI202/ISI222
FAST-BUS 模块 FM211
风机PL模块ISI222 机舱
风机PL模块MX213 机舱
风机PL模块FM211 塔基
DIO248
DIO280
RS204
DI232
NT255
MPC240
FM211
DIO216
PTAI216
FS211/N
EM203
CM202
DPM200
DO232
AIO288
ISI222
RS204/T
BS208
BS207
BS205
BS212
ISI202
CNT204/R
ME203/CNW
MPC240
CNT204/H
BS206
MX213
DIO232
DIO264
LM201
MC205
MC206
CPC220
MX220
FS221/N
FM221
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