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公开(公告)号：US20160294311A1
公开(公告)日：2016-10-06
申请号：US15177752
申请日：2016-06-09
Applicant: Texas Instruments Incorporated
Inventor： Yisong Lu , Ruochen Zhang , Wei Zuo
Abstract: A circuit includes a processor that analyzes a pulse width modulated (PWM) signal feedback from a brushless DC motor to determine a transition between a mutual inductance zero crossing condition and a Back Electro Motive Force (BEMF) zero crossing condition of the brushless DC motor. A mutual inductance controller is executed by the processor to commutate the brushless DC motor at startup of the motor when the mutual inductance zero crossing condition is detected by the processor. A BEMF controller is executed by the processor to commutate the brushless DC motor after startup of the motor when the BEMF zero crossing condition is detected by the processor.
Abstract translation: 电路包括处理器，其分析来自无刷直流电动机的脉冲宽度调制（PWM）信号反馈以确定无刷直流电动机的互感零交叉条件和后向电动力（BEMF）过零状态之间的转变。 当处理器检测到互感零交叉条件时，由电感器执行互感控制器，以在马达启动时对无刷直流电机进行换向。 当处理器检测到BEMF过零状态时，BEMF控制器由处理器执行，以在电动机起动之后换向无刷直流电动机。
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2.发明申请TRI-STATING BRUSHLESS DC MOTOR PHASE FOR DIRECT DETECTION OF BACK EMF ZERO CROSS 审中-公开直立电机三相无刷直流电机直接检测反电动势零交叉公开(公告)号：US20160294310A1
公开(公告)日：2016-10-06
申请号：US15182126
申请日：2016-06-14
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Yisong Lu
Abstract: A back electromotive force (BEMF) zero cross may be detected in a brushless direct current (BLDC) motor that is controlled by pulse width modulation (PWM). A phase input of the BLDC motor is tri-stated during PWM periods in which the phase input conducts motor drive current, and the tri-stating of the phase input is used to determine whether a BEMF zero cross has occurred in the BLDC motor.
Abstract translation: 在通过脉冲宽度调制（PWM）控制的无刷直流（BLDC）电机中可以检测到反电动势（BEMF）零交叉。 在PWM周期内，BLDC电动机的相位输入为三相，其中相位输入传导电动机驱动电流，并且使用相位输入的三态来确定BLDC电动机中是否发生了BEMF零交叉。
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3.发明申请Tri-Stating Brushless DC Motor Phase for Direct Detection of Back EMF Zero Cross 有权用于直接检测反电动势零交叉的三态无刷直流电动机相公开(公告)号：US20150069942A1
公开(公告)日：2015-03-12
申请号：US14025057
申请日：2013-09-12
Applicant: Texas Instruments Incorporated
Inventor： Yisong Lu
IPC: H02P6/18
Abstract: A back electromotive force (BEMF) zero cross may be detected in a brushless direct current (BLDC) motor that is controlled by pulse width modulation (PWM). A phase input of the BLDC motor is tri-stated during PWM periods in which the phase input conducts motor drive current, and the tri-stating of the phase input is used to determine whether a BEMF zero cross has occurred in the BLDC motor.
Abstract translation: 在通过脉冲宽度调制（PWM）控制的无刷直流（BLDC）电机中可以检测到反电动势（BEMF）零交叉。 在PWM周期内，BLDC电动机的相位输入为三相，其中相位输入传导电动机驱动电流，并且使用相位输入的三态来确定BLDC电动机中是否发生了BEMF零交叉。
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公开(公告)号：US10658956B2
公开(公告)日：2020-05-19
申请号：US16022056
申请日：2018-06-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Yisong Lu , Ruochen Zhang , Wei Zuo
Abstract: A circuit includes a processor that analyzes a pulse width modulated (PWM) signal feedback from a brushless DC motor to determine a transition between a mutual inductance zero crossing condition and a Back Electro Motive Force (BEMF) zero crossing condition of the brushless DC motor. A mutual inductance controller is executed by the processor to commutate the brushless DC motor at startup of the motor when the mutual inductance zero crossing condition is detected by the processor. A BEMF controller is executed by the processor to commutate the brushless DC motor after startup of the motor when the BEMF zero crossing condition is detected by the processor.
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Patent Agency Ranking
公开(公告)号：US20190020292A1
公开(公告)日：2019-01-17
申请号：US16022056
申请日：2018-06-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Yisong Lu , Ruochen Zhang , Wei Zuo
Abstract: A circuit includes a processor that analyzes a pulse width modulated (PWM) signal feedback from a brushless DC motor to determine a transition between a mutual inductance zero crossing condition and a Back Electro Motive Force (BEMF) zero crossing condition of the brushless DC motor. A mutual inductance controller is executed by the processor to commutate the brushless DC motor at startup of the motor when the mutual inductance zero crossing condition is detected by the processor. A BEMF controller is executed by the processor to commutate the brushless DC motor after startup of the motor when the BEMF zero crossing condition is detected by the processor.
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公开(公告)号：US09966887B2
公开(公告)日：2018-05-08
申请号：US15182126
申请日：2016-06-14
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Yisong Lu
Abstract: A back electromotive force (BEMF) zero cross may be detected in a brushless direct current (BLDC) motor that is controlled by pulse width modulation (PWM). A phase input of the BLDC motor is tri-stated during PWM periods in which the phase input conducts motor drive current, and the tri-stating of the phase input is used to determine whether a BEMF zero cross has occurred in the BLDC motor.
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公开(公告)号：US10044303B2
公开(公告)日：2018-08-07
申请号：US15177752
申请日：2016-06-09
Applicant: Texas Instruments Incorporated
Inventor： Yisong Lu , Ruochen Zhang , Wei Zuo
Abstract: A circuit includes a processor that analyzes a pulse width modulated (PWM) signal feedback from a brushless DC motor to determine a transition between a mutual inductance zero crossing condition and a Back Electro Motive Force (BEMF) zero crossing condition of the brushless DC motor. A mutual inductance controller is executed by the processor to commutate the brushless DC motor at startup of the motor when the mutual inductance zero crossing condition is detected by the processor. A BEMF controller is executed by the processor to commutate the brushless DC motor after startup of the motor when the BEMF zero crossing condition is detected by the processor.
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公开(公告)号：US09397594B2
公开(公告)日：2016-07-19
申请号：US14025057
申请日：2013-09-12
Applicant: Texas Instruments Incorporated
Inventor： Yisong Lu
Abstract: A back electromotive force (BEMF) zero cross may be detected in a brushless direct current (BLDC) motor that is controlled by pulse width modulation (PWM). A phase input of the BLDC motor is tri-stated during PWM periods in which the phase input conducts motor drive current, and the tri-stating of the phase input is used to determine whether a BEMF zero cross has occurred in the BLDC motor.
Abstract translation: 在通过脉冲宽度调制（PWM）控制的无刷直流（BLDC）电机中可以检测到反电动势（BEMF）零交叉。 在PWM周期内，BLDC电动机的相位输入为三相，其中相位输入传导电动机驱动电流，并且使用相位输入的三态来确定BLDC电动机中是否发生了BEMF零交叉。
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公开(公告)号：US09391553B2
公开(公告)日：2016-07-12
申请号：US14098161
申请日：2013-12-05
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Yisong Lu , Ruochen Zhang , Wei Zuo
Abstract: A circuit includes a processor that analyzes a pulse width modulated (PWM) signal feedback from a brushless DC motor to determine a transition between a mutual inductance zero crossing condition and a Back Electro Motive Force (BEMF) zero crossing condition of the brushless DC motor. A mutual inductance controller is executed by the processor to commutate the brushless DC motor at startup of the motor when the mutual inductance zero crossing condition is detected by the processor. A BEMF controller is executed by the processor to commutate the brushless DC motor after startup of the motor when the BEMF zero crossing condition is detected by the processor.
Abstract translation: 电路包括处理器，其分析来自无刷直流电动机的脉冲宽度调制（PWM）信号反馈以确定无刷直流电动机的互感零交叉条件和后向电动力（BEMF）过零状态之间的转变。 当处理器检测到互感零交叉条件时，由电感器执行互感控制器，以在马达启动时对无刷直流电机进行换向。 当处理器检测到BEMF过零状态时，BEMF控制器由处理器执行，以在电动机起动之后换向无刷直流电动机。
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