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公开(公告)号：US11101754B2
公开(公告)日：2021-08-24
申请号：US16869617
申请日：2020-05-08
Applicant: Texas Instruments Incorporated
Inventor： Sooping Saw , Rakesh Raja , Wen Pin Lin , Sudhir Nagaraj
Abstract: In one embodiment, a method includes detecting, by a stall detection sensor in a driver coupled to a stepper motor, a first set of time-off periods in a rising commutation phase of motor current during current regulation. The stall detection sensor further detects a second set of time-off periods in a falling commutation phase of motor current during current regulation. Next, the stall detection sensor compares the first set of time-off periods with the second set of time-off periods and determines whether the stepper motor is stalled based on the comparison of the first set of time-off periods with the second set of time-off periods.
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2.发明申请公开(公告)号：US20200266740A1
公开(公告)日：2020-08-20
申请号：US16869617
申请日：2020-05-08
Applicant: Texas Instruments Incorporated
Inventor： Sooping Saw , Rakesh Raja , Wen Pin Lin , Sudhir Nagaraj
Abstract: In one embodiment, a method includes detecting, by a stall detection sensor in a driver coupled to a stepper motor, a first set of time-off periods in a rising commutation phase of motor current during current regulation. The stall detection sensor further detects a second set of time-off periods in a falling commutation phase of motor current during current regulation. Next, the stall detection sensor compares the first set of time-off periods with the second set of time-off periods and determines whether the stepper motor is stalled based on the comparison of the first set of time-off periods with the second set of time-off periods.
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公开(公告)号：US10686391B2
公开(公告)日：2020-06-16
申请号：US16134046
申请日：2018-09-18
Applicant: Texas Instruments Incorporated
Inventor： Sooping Saw , Rakesh Raja , Wen Pin Lin , Sudhir Nagaraj
Abstract: In one embodiment, a method includes detecting, by a stall detection sensor in a driver coupled to a stepper motor, a first set of time-off periods in a rising commutation phase of motor current during current regulation. The stall detection sensor further detects a second set of time-off periods in a falling commutation phase of motor current during current regulation. Next, the stall detection sensor compares the first set of time-off periods with the second set of time-off periods and determines whether the stepper motor is stalled based on the comparison of the first set of time-off periods with the second set of time-off periods.
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4.发明申请公开(公告)号：US20190109551A1
公开(公告)日：2019-04-11
申请号：US16134046
申请日：2018-09-18
Applicant: Texas Instruments Incorporated
Inventor： Sooping Saw , Rakesh Raja , Wen Pin Lin , Sudhir Nagaraj
Abstract: In one embodiment, a method includes detecting, by a stall detection sensor in a driver coupled to a stepper motor, a first set of time-off periods in a rising commutation phase of motor current during current regulation. The stall detection sensor further detects a second set of time-off periods in a falling commutation phase of motor current during current regulation. Next, the stall detection sensor compares the first set of time-off periods with the second set of time-off periods and determines whether the stepper motor is stalled based on the comparison of the first set of time-off periods with the second set of time-off periods.
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