公开(公告)号：US09397597B2

公开(公告)日：2016-07-19

申请号：US14257998

申请日：2014-04-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Wenchao Qu ,  Anuj Jain ,  Ryan Paul Kehr

IPC: H02P8/00 ,  H02P8/12

CPC classification number: H02P8/12

Abstract: Stepper motor winding current regulation methods and apparatus adapt a maximum blanking period to generate an adapted blanking period that is proportional to a currently-selected current regulation set-point. Sensed winding current feedback is ignored at a current regulation controller during the adapted blanking period or during a minimum blanking period, whichever longer, to avoid attempting to track noise imposed upon a sensed winding current feedback signal at an initiation of rapid current changes di/dt. Doing so may decrease ripple in the motor winding current waveform and reduce zero-crossing distortion by decreasing overshoot of the current regulation set-point by the sensed winding current.

Abstract translation: 步进电机绕组电流调节方法和装置适应最大消隐周期以产生与当前选择的电流调节设定点成比例的适配消隐周期。 感应绕组电流反馈在适配的消隐期间或在最小消隐期间（较短时间内）在电流调节控制器处被忽略，以避免在快速电流变化开始时跟踪感测到的​​绕组电流反馈信号的噪声di / dt 。 这样做可能会降低电机绕组电流波形的波动，并通过减小感测绕组电流对电流调节设定值的过冲来减小过零失真。

公开(公告)号：US20150028790A1

公开(公告)日：2015-01-29

申请号：US14257998

申请日：2014-04-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Wenchao Qu ,  Anuj Jain ,  Ryan Paul Kehr

IPC: H02P8/00

CPC classification number: H02P8/12

Abstract: Stepper motor winding current regulation methods and apparatus adapt a maximum blanking period to generate an adapted blanking period that is proportional to a currently-selected current regulation set-point. Sensed winding current feedback is ignored at a current regulation controller during the adapted blanking period or during a minimum blanking period, whichever longer, to avoid attempting to track noise imposed upon a sensed winding current feedback signal at an initiation of rapid current changes di/dt. Doing so may decrease ripple in the motor winding current waveform and reduce zero-crossing distortion by decreasing overshoot of the current regulation set-point by the sensed winding current.

Abstract translation: 步进电机绕组电流调节方法和装置适应最大消隐周期以产生与当前选择的电流调节设定点成比例的适配消隐周期。 感应绕组电流反馈在适配的消隐期间或在最小消隐期间（较短时间内）在电流调节控制器处被忽略，以避免在快速电流变化开始时跟踪感测到的​​绕组电流反馈信号的噪声di / dt 。 这样做可能会降低电机绕组电流波形的波动，并通过减小感测绕组电流对电流调节设定值的过冲来减小过零失真。