公开(公告)号：US08922147B2

公开(公告)日：2014-12-30

申请号：US13874874

申请日：2013-05-01

Applicant: Texas Instruments Incorporated

Inventor： John K. Rote ,  Brian L. Schmidt ,  Gregory E. Swize

IPC: H02P6/10

CPC classification number: H02P6/10

Abstract: A quiet motor control system is described. This system digitally determines modulated voltages applied to motor phases in a manner that compensates for winding torque distortions, which reduces acoustic emissions.

Abstract translation: 描述了一个安静的电机控制系统。 该系统以补偿绕组转矩失真的方式数字地确定施加到电动机相的调制电压，这降低了声发射。

公开(公告)号：US09762174B2

公开(公告)日：2017-09-12

申请号：US14972515

申请日：2015-12-17

Applicant: Texas Instruments Incorporated

Inventor： Jasraj R. Dalvi ,  Seil Oh ,  John K. Rote

IPC: G05B11/28 ,  H02P27/08

CPC classification number: H02P27/085 ,  H02P2209/09

Abstract: Systems and methods for increasing Pulse Width Modulation (PWM) resolution for digitally controlled motor control applications are described. For example, in some embodiments, a method may include receiving a clock signal having a given period; identifying a target duty cycle; calculating a comparison point based upon the given period and the target duty cycle; generating a PWM signal based upon the clock signal using the comparison point; and varying the comparison point to increase a resolution of an effective duty cycle of the PWM signal.

公开(公告)号：US20130241453A1

公开(公告)日：2013-09-19

申请号：US13874874

申请日：2013-05-01

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： John K. Rote

IPC: H02P6/10

CPC classification number: H02P6/10

Abstract: A quiet motor control system is described. This system digitally determines modulated voltages applied to motor phases in a manner that compensates for winding torque distortions, which reduces acoustic emissions.

Abstract translation: 描述了一个安静的电机控制系统。 该系统以补偿绕组转矩失真的方式数字地确定施加到电动机相的调制电压，这降低了声发射。

公开(公告)号：US20160233813A1

公开(公告)日：2016-08-11

申请号：US14972515

申请日：2015-12-17

Applicant: Texas Instruments Incorporated

Inventor： Jasraj R. Dalvi ,  Seil Oh ,  John K. Rote

IPC: H02P29/00

CPC classification number: H02P27/085 ,  H02P2209/09

Abstract: Systems and methods for increasing Pulse Width Modulation (PWM) resolution for digitally controlled motor control applications are described. For example, in some embodiments, a method may include receiving a clock signal having a given period; identifying a target duty cycle; calculating a comparison point based upon the given period and the target duty cycle; generating a PWM signal based upon the clock signal using the comparison point; and varying the comparison point to increase a resolution of an effective duty cycle of the PWM signal.

Abstract translation: 描述了用于增加数字控制电机控制应用的脉宽调制（PWM）分辨率的系统和方法。 例如，在一些实施例中，方法可以包括接收具有给定周期的时钟信号; 识别目标工作周期; 基于给定的周期和目标占空比计算比较点; 使用比较点根据时钟信号产生PWM信号; 并改变比较点以增加PWM信号的有效占空比的分辨率。

公开(公告)号：US20160233805A1

公开(公告)日：2016-08-11

申请号：US15019326

申请日：2016-02-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： SEIL OH ,  Tuan V. Tran ,  David R. Street ,  Juergen Luebbe ,  Quang Dieu An ,  John K. Rote

IPC: H02P6/24 ,  H02P6/28

CPC classification number: H02P6/24 ,  H02P3/14 ,  H02P3/18 ,  H02P6/182

Abstract: A circuit includes a driver circuit having a high side switch device and a low side switch device coupled to a load voltage node and a motor winding output. A controller operates the high side switch device and the low side switch device. The controller operates in a normal mode to supply current to the motor winding output for driving a motor winding when an external power supply is available to supply the load voltage node. In response to detecting a loss of the external power supply, the controller operates the high side switch device and the low side switch device in a boost mode to utilize a back electromotive force (BEMF) voltage from the motor winding to supply current to the load voltage node.

Abstract translation: 电路包括具有高侧开关装置和耦合到负载电压节点和电动机绕组输出的低侧开关装置的驱动电路。 控制器操作高侧开关装置和低侧开关装置。 当外部电源可用于提供负载电压节点时，控制器以正常模式工作以向电动机绕组输出提供电流以驱动电动机绕组。 响应于检测到外部电源的损失，控制器以升压模式操作高侧开关装置和低侧开关装置，以利用来自电动机绕组的反电动势（BEMF）电压来向负载提供电流 电压节点。

公开(公告)号：US09893659B2

公开(公告)日：2018-02-13

申请号：US15019326

申请日：2016-02-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Seil Oh ,  Tuan V. Tran ,  David R. Street ,  Juergen Luebbe ,  Quang Dieu An ,  John K. Rote

IPC: H02P1/04 ,  H02P6/24 ,  H02P3/14 ,  H02P3/18 ,  H02P6/182

CPC classification number: H02P6/24 ,  H02P3/14 ,  H02P3/18 ,  H02P6/182

Abstract: A circuit includes a driver circuit having a high side switch device and a low side switch device coupled to a load voltage node and a motor winding output. A controller operates the high side switch device and the low side switch device. The controller operates in a normal mode to supply current to the motor winding output for driving a motor winding when an external power supply is available to supply the load voltage node. In response to detecting a loss of the external power supply, the controller operates the high side switch device and the low side switch device in a boost mode to utilize a back electromotive force (BEMF) voltage from the motor winding to supply current to the load voltage node.