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公开(公告)号：US10960922B2
公开(公告)日：2021-03-30
申请号：US15420260
申请日：2017-01-31
Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION
Inventor： Prerit Pramod , Rakesh Mitra , Jeffery A. Zuraski , Ashok Chandy , Julie A. Kleinau
Abstract: A control system for monitoring operation of an electric motor includes a plurality of position sensors configured to measure a position of the electric motor, an indirect position estimation module configured to indirectly estimate the position of the motor, and an error monitoring module. The error monitoring module is configured to perform at least one of: comparing a measured position from the plurality of position sensors to an estimated position from the sensor position estimation module, and detecting a failure of at least one of the one or more position sensors based on the comparison; and calculating a difference between the measured position from one of the plurality of position sensors and the measured position from another of the plurality of position sensors, and causing the indirect position estimation module to initiate estimation of the position of the motor based on the difference.
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公开(公告)号：US09738309B2
公开(公告)日：2017-08-22
申请号：US14954210
申请日：2015-11-30
Applicant: Steering Solutions IP Holding Corporation
Inventor： Tejas M. Varunjikar , Ashok Chandy , Michael A. Eickholt
IPC: A01B69/00 , B62D6/00 , B62D11/00 , B62D12/00 , B63G8/20 , B63H25/04 , G05D1/00 , G06F7/00 , G06F17/00 , G06F19/00 , B62D5/04
CPC classification number: B62D5/0472 , B62D5/0481 , B62D6/008
Abstract: A system for actively damping a power steering system includes a damping activation module that generates a damping activation signal based on a motor velocity signal, a t-bar torque signal, and a final motor command; a command calculation module that generates a calculated command based on the motor velocity signal and a vehicle speed signal; and a damping calculation module that generates a damping command based on the damping activation signal and the calculated command, the damping command reduces a motor velocity of a motor of the power steering system to mitigate a rack disturbance.
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公开(公告)号：US09114826B2
公开(公告)日：2015-08-25
申请号：US14203844
申请日：2014-03-11
Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION
Inventor： Ashok Chandy , Scott Millsap
IPC: B62D6/00 , B62D5/04 , C10M169/06 , B62D11/00 , F16H47/00
CPC classification number: B62D5/0493 , B62D5/04 , B62D5/0484 , B62D11/00 , C10M169/06 , F16H47/00
Abstract: A method for generating and verifying an output command for using in a power steering system is provided. The method receives, by a module having at least a primary processing path and a secondary processing path that is in parallel with the primary processing path, a set of input signals. In the primary processing path, the method generates a primary output command based on the set of input signals and sends the primary output command out of the module. In the secondary processing path, the method generates a first range of command values based on the set of input signals, determines whether the primary output command falls within the range of command values, and generates a fault signal based on determining that the primary output command does not fall within the first range of command values.
Abstract translation: 提供了一种用于产生和验证在动力转向系统中使用的输出命令的方法。 该方法通过至少具有与主处理路径并行的主处理路径和辅助处理路径的模块接收一组输入信号。 在主处理路径中，该方法基于输入信号集合生成主输出命令，并将主输出命令发送出模块。 在二次处理路径中，该方法基于输入信号集合生成第一范围的命令值，确定主输出命令是否落在命令值的范围内，并且基于确定主输出命令 不在第一范围内的命令值。
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Patent Agency Ranking
公开(公告)号：US20140257639A1
公开(公告)日：2014-09-11
申请号：US14203844
申请日：2014-03-11
Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION
Inventor： Ashok Chandy , Scott Millsap
IPC: B62D5/00
CPC classification number: B62D5/0493 , B62D5/04 , B62D5/0484 , B62D11/00 , C10M169/06 , F16H47/00
Abstract: A method for generating and verifying an output command for using in a power steering system is provided. The method receives, by a module having at least a primary processing path and a secondary processing path that is in parallel with the primary processing path, a set of input signals. In the primary processing path, the method generates a primary output command based on the set of input signals and sends the primary output command out of the module. In the secondary processing path, the method generates a first range of command values based on the set of input signals, determines whether the primary output command falls within the range of command values, and generates a fault signal based on determining that the primary output command does not fall within the first range of command values.
Abstract translation: 提供了一种用于产生和验证在动力转向系统中使用的输出命令的方法。 该方法通过至少具有与主处理路径并行的主处理路径和辅助处理路径的模块接收一组输入信号。 在主处理路径中，该方法基于输入信号集合生成主输出命令，并将主输出命令发送出模块。 在二次处理路径中，该方法基于输入信号集合生成第一范围的命令值，确定主输出命令是否落在命令值的范围内，并且基于确定主输出命令 不在第一范围内的命令值。
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公开(公告)号：US10481602B2
公开(公告)日：2019-11-19
申请号：US15295039
申请日：2016-10-17
Applicant: Steering Solutions IP Holding Corporation
Inventor： Ashok Chandy
Abstract: A system for sensor fusion for autonomous driving transition control includes a sensor fusion module and a decision making module. The sensor fusion module fuses a plurality of steering sensor data from one or more sensors of a steering system with a plurality of driver state data from a plurality of driver state sensors as a plurality of fused state data aligned in time. The decision making module determines whether to transition from an autonomous driving mode to a manual driving mode based on the fused state data.
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公开(公告)号：US10399591B2
公开(公告)日：2019-09-03
申请号：US15283628
申请日：2016-10-03
Applicant: Steering Solutions IP Holding Corporation
Inventor： Ashok Chandy
Abstract: A system for grip-based handwheel compensation includes a net handwheel torque moment determination module that determines a net handwheel torque moment between a left grip and a right grip on a handwheel. The system also includes a filter transition compensation module that applies a filter to smooth transitions in the net handwheel torque moment as a bias compensation. The system further includes a handwheel torque compensation module that determines a grip compensated handwheel torque based on a difference between a sensed handwheel torque and the bias compensation.
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公开(公告)号：US20170217480A1
公开(公告)日：2017-08-03
申请号：US15417797
申请日：2017-01-27
Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION
Inventor： Dennis B. Skellenger , Ashok Chandy
IPC: B62D5/04 , H02P27/08 , H02P29/028 , B62D6/10 , H02P29/024
CPC classification number: B62D5/0463 , B62D5/0484 , B62D5/0487 , B62D6/10 , B62D15/02 , H02P27/08 , H02P29/027 , H02P29/028
Abstract: Technical solutions are described for mitigating braking torque in a motor of a steering system caused by a FET short. For example, an example mitigation system includes a mitigation module that adjusts a motor torque in response to a FET short. The mitigation system further includes a mitigation-enable module that selectively enables and disables the mitigation module based on a handwheel torque signal. Further, the mitigation system includes a damping module that reduces the motor torque based on a motor velocity signal for the motor.
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18.发明授权公开(公告)号：US09598102B2
公开(公告)日：2017-03-21
申请号：US14518370
申请日：2014-10-20
Inventor： Scott A. Millsap , Ashok Chandy , Kevin L. Derry , Caroline Dannöhl , Hans-Peter Hank , Jens Schotte , Kristian Vetter
IPC: B62D5/04
CPC classification number: B62D5/0484 , B62D5/0463 , B62D5/0481 , B62D5/049 , B62D5/0493
Abstract: A method of mitigating abnormalities in a first control command for controlling a power steering system is provided. The method generates a range signal indicative of a range of command values based on a plurality of input signals. The method determines whether the first control command is out of the range for longer than a predetermined duration of time. The method limits the first control command to the range and sends the limited first control command to the power steering system in response to determining that the first control command is out of the range for shorter than or equal to the duration of time.
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