极性变换 meaning in Chinese

change of polarity
polarity inversion
polarity reversal
pole change
reversal

The signal sampling circuit fulfill the tasks of sampling signal and changing the double polarities signal to the single polarity signal ; the drive circuit receives the pwm signals from dsp and pass the signals to ipm through optical - couple devices ; the protective circuit safeguard the system against high current , high voltage , low voltage and high temperature on the ipm model
其中信号处理电路主要完成采集输出电流和中间直流环节电压信号，并对采集到的电流信号进行极性变换处理的功能；驱动电路接收dsp输出的高频驱动信号，通过耦合器件直接驱动ipm模块；保护电路利用采集到电气信号对整个系统实施保护，包括过电流、过电压、欠电压、 ipm模块过热等。