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公开(公告)号：US11027773B2
公开(公告)日：2021-06-08
申请号：US16134126
申请日：2018-09-18
Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION
Inventor： Steven D. Klein , Kai Zheng , Scott T. Sanford
Abstract: According to one or more embodiments a steer by wire steering system includes a handwheel actuator that provides a commanded position for a rack of a vehicle. The steer by wire steering system further includes a roadwheel actuator that moves the rack to a rack position based on the commanded position from the handwheel actuator. The steer by wire steering system further includes a diagnostic apparatus to compute a reference position based on the commanded position, and to compute a reference tracking error based on a difference between the reference position and the rack position. The diagnostic apparatus further determines a fault condition with the steer by wire system using the reference tracking error.
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公开(公告)号：US20190084611A1
公开(公告)日：2019-03-21
申请号：US16134132
申请日：2018-09-18
Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION
Inventor： Steven D. Klein , Kai Zheng , Scott T. Sanford
CPC classification number: B62D5/006 , B62D5/001 , B62D5/0442 , B62D5/0481 , B62D6/008
Abstract: According to one or more embodiments described herein, a steer by wire steering system includes a pair of actuators, a handwheel actuator that provides a commanded position to a roadwheel actuator, which moves a rack of the vehicle to a rack position based on the commanded position from the handwheel actuator. The steer by wire steering system further includes a controller that generates a handwheel torque command, the handwheel actuator generates a feedback torque based on the handwheel torque command. The controller further computes a tracking error based on a difference between the commanded position and the rack position. The controller further determines a catch motor torque value using the tracking error. The controller further modifies the handwheel torque command using the catch motor torque, the handwheel actuator generates an amount of torque that is substantially a sum of the feedback torque and the catch motor torque.
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公开(公告)号：US10676129B2
公开(公告)日：2020-06-09
申请号：US16017162
申请日：2018-06-25
Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION
Inventor： Tejas M. Varunjikar , Prerit Pramod , Julie A. Kleinau , Michael Eickholt , Rangarajan Ramanujam , Dennis B. Skellenger , Steven D. Klein
Abstract: According to one or more embodiments of the present invention a steer by wire steering system includes a deviation detection unit configured to determine a deviation signal that is indicative of a disturbance in one or more components coupled to a rack. The steer by wire steering system further includes a handwheel notification module configured to generate a modification signal based on the deviation signal, in response to the deviation signal being detected for at least a predetermined duration. The steer by wire steering system further includes a handwheel control module that generates an input command corresponding to a reference torque generated by a road wheel actuator, a feedback torque for a driver is generated based on the input command. The handwheel control module further modifies the input command using the modification signal, the modification providing a notification corresponding to the disturbance to the driver.
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Patent Agency Ranking
公开(公告)号：US20190389508A1
公开(公告)日：2019-12-26
申请号：US16017162
申请日：2018-06-25
Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION
Inventor： Tejas M. Varunjikar , Prerit Pramod , Julie A. Kleinau , Michael Eickholt , Rangarajan Ramanujam , Dennis B. Skellenger , Steven D. Klein
Abstract: According to one or more embodiments of the present invention a steer by wire steering system includes a deviation detection unit configured to determine a deviation signal that is indicative of a disturbance in one or more components coupled to a rack. The steer by wire steering system further includes a handwheel notification module configured to generate a modification signal based on the deviation signal, in response to the deviation signal being detected for at least a predetermined duration. The steer by wire steering system further includes a handwheel control module that generates an input command corresponding to a reference torque generated by a road wheel actuator, a feedback torque for a driver is generated based on the input command. The handwheel control module further modifies the input command using the modification signal, the modification providing a notification corresponding to the disturbance to the driver.
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公开(公告)号：US20220089212A1
公开(公告)日：2022-03-24
申请号：US17029657
申请日：2020-09-23
Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION
Inventor： Steven D. Klein , Michael K. Hales , Nicholas M. Trewhella
Abstract: A vehicle steering control method includes receiving a sensed handwheel angle corresponding to a position of a handwheel and receiving a sensed handwheel toque value indicating an amount of torque applied by an operator on the handwheel. The method also includes, in response to a determination that the handwheel motor is in an unlocked condition, generating a roadwheel angle based on the sensed handwheel angle and a vehicle speed. The method also includes, in response to a determination that the handwheel motor is in a locked condition generating the roadwheel angle based on the sensed handwheel torque value and the vehicle speed and, in response to a determination that the locked condition of the handwheel motor is an intermittent condition, maintaining the handwheel motor in the locked condition.
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公开(公告)号：US20190084614A1
公开(公告)日：2019-03-21
申请号：US16134126
申请日：2018-09-18
Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION
Inventor： Steven D. Klein , Kai Zheng , Scott T. Sanford
Abstract: According to one or more embodiments a steer by wire steering system includes a handwheel actuator that provides a commanded position for a rack of a vehicle. The steer by wire steering system further includes a roadwheel actuator that moves the rack to a rack position based on the commanded position from the handwheel actuator. The steer by wire steering system further includes a diagnostic apparatus to compute a reference position based on the commanded position, and to compute a reference tracking error based on a difference between the reference position and the rack position. The diagnostic apparatus further determines a fault condition with the steer by wire system using the reference tracking error.
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公开(公告)号：US11724733B2
公开(公告)日：2023-08-15
申请号：US17029657
申请日：2020-09-23
Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION
Inventor： Steven D. Klein , Michael K. Hales , Nicholas M. Trewhella
CPC classification number: B62D5/0463 , B62D6/00
Abstract: A vehicle steering control method includes receiving a sensed handwheel angle corresponding to a position of a handwheel and receiving a sensed handwheel toque value indicating an amount of torque applied by an operator on the handwheel. The method also includes, in response to a determination that the handwheel motor is in an unlocked condition, generating a roadwheel angle based on the sensed handwheel angle and a vehicle speed. The method also includes, in response to a determination that the handwheel motor is in a locked condition generating the roadwheel angle based on the sensed handwheel torque value and the vehicle speed and, in response to a determination that the locked condition of the handwheel motor is an intermittent condition, maintaining the handwheel motor in the locked condition.
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公开(公告)号：US10800443B2
公开(公告)日：2020-10-13
申请号：US16134132
申请日：2018-09-18
Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION
Inventor： Steven D. Klein , Kai Zheng , Scott T. Sanford
Abstract: According to one or more embodiments described herein, a steer by wire steering system includes a pair of actuators, a handwheel actuator that provides a commanded position to a roadwheel actuator, which moves a rack of the vehicle to a rack position based on the commanded position from the handwheel actuator. The steer by wire steering system further includes a controller that generates a handwheel torque command, the handwheel actuator generates a feedback torque based on the handwheel torque command. The controller further computes a tracking error based on a difference between the commanded position and the rack position. The controller further determines a catch motor torque value using the tracking error. The controller further modifies the handwheel torque command using the catch motor torque, the handwheel actuator generates an amount of torque that is substantially a sum of the feedback torque and the catch motor torque.
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