on-off state造句

• But the power electronic devices in pwm power amplifier are working in the on - off state , easily producing the over - voltage and over - current phenomena . under tht condition the power electronic devices are bearing higher dv / dt , di / dt and more energy losses , influencing itself capability and life - span . at the same time , the dv / dt , di / dt also cause the severe electromagnetism disturbances , such as the disturbances in the photoelectric theodolite will make the other systems working improperly
  然而在pwm功率放大器的主回路中电力电子器件工作在开关状态，易产生过压、过流现象，器件承受较高dv dt 、 di dt并产生较大的损耗，影响器件本身的性能和寿命，同时dv dt 、 di dt还会产生严重的电磁干扰，如在光学测量设备中，这种干扰将会影响其它系统正常运行。
• Otherwise , an active integral chaotic measuring circuit is suggested based on the analysis of the present nonlinear circuits in this paper , which gets rid of nonlinear distortion of map function in constant - voltage mode and defect of constant - current source operating on - off state . using a general operational amplifier , high precision can also be obtained . a nth - order chaotic measuring system can be composed of its interconnection
  另外，本文在分析原有非线性电路的基础上提出一种有源积分式混沌测量电路，它克服了恒压式测量电路映射函数存在非线性失真、恒流式测量电路不宜工作在开关状态的不足，利用普通的运放也获得较好的测量精度。