对电容式加速度计，为测量其电容的变化，通常需要带直流偏置的交流电压信号来驱动。
For capacitive sensing, driving signal with DC bias voltage and ac voltage is usually necessary for the measurement of capacitance.
全数字PWM 交流主轴驱动系统的关键在于如何实时地得到PWM 开关信号。
The key of the fully digital PWM speed regulation system is how to get the PWM signals on-line.
同时，建立微陀螺驱动模态等效电学模型，并对它进行交流小信号分析；
The equivalent electricity model of micro-gyroscope's driving mode is established and analyzed as AC characteristics using Hspice.
设计了一种交流电机控制系统用于水处理过程控制，采用数字信号处理器TMS320LF 2407配合复杂可编程器件EPM 7256e构成主控系统，并对驱动模块进行设计。
The digital signal processor (DSP) TMS320LF2407 and the complex programmable logic device (CPLD) EPM7256E are used as the main control system and the drive module is also designed.
主控电路发出6路PWM信号，经过功率电路隔离和放大，驱动交流永磁电机运转。
The main control circuit sends 6 PWM signals. After the isolation and enlargement by the power circuit, these signals could drive the Permanent Magnet Synchronous Motor (PMSM for short).
在数字信号处理技术的基础上，本文对全数字式的交流永磁同步电机伺服驱动器进行了较为深入和全面的研究。
Based on technology of digital signal processing, the paper has done thorough and comprehensive research on full digital AC PMSM servo control system.
在数字信号处理技术的基础上，本文对全数字式的交流永磁同步电机伺服驱动器进行了较为深入和全面的研究。
Based on technology of digital signal processing, the paper has done thorough and comprehensive research on full digital AC PMSM servo control system.
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