电机三相电流通过Park变换与矢量旋转被分解为产生磁通的励磁电流分量id和产生转矩的转矩电流Iq分量，这两个分量具有独立的比例积分放大电路。芯片可以启用或禁止速度闭环控制，启用速度闭环控制时，通过改变给定速度值，给定速度值与测量速度之间相互比较将产生速度偏差。基于这个偏差，速度调节器产生一个对应的转矩电流Is_qRef;当速度闭环控制禁止，可以直接改变转矩电流Is_qRef。当Is_dRef＝0时，改变转矩电流 Is_qRef，通过经过Clark变换转换成静止的α,β坐标系的电流分量isα、isβ,再经过Park变换转换成旋转坐标系下的电流Id,Iq。基于旋转坐标系的给定和实际电流的偏差，电流控制器产生输出电压Us_q和Us_d（在旋转坐标系d，q）。电压Us_q和Us_d被反变换成静止坐标系下的电压分量。然后经过空间矢量PWM计算后，给逆变器的功率模块发出合适的开关信号。
IRMCK201主机通信接口包括RS-232/RS-485/RS-422、快速SPI接口和8位并行接口。因此它可以方便与多轴主机或控制器进行通信，通过修改和读取其主控寄存器来控制输出。IRMCK201也可以独立运行而不需要外部主机参与控制，其运行参数通过外部EEPROM来保存，上电自动从EEPROM中读取参数。
IRMCK201具有编码器接口，正交信号输入频率可达1MHz，很容易组成位置闭环控制系统。IRMCK201还具有HALLA/B/C接口，A/B/C可以单独输入也可以组合输入,用来指示转子位置。
IRMCK201还具有A/D转换信号接口，直流母线电压反馈及过压制动控制接口。可以通过A/D接口输入模拟参考电压来改变输出转速或输出转矩。同时芯片具有PWM输出，通过简单低通滤波可以作为D/A信号输出，驱动指示仪表。通过寄存器的设置，可以选择指示母线电压、V相电压、W相电压、速度参考值、速度反馈值、Iq参考值、Uq、Ud、Iq或Ib等。
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