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公开(公告)号：US20240383522A1
公开(公告)日：2024-11-21
申请号：US18319233
申请日：2023-05-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alexander Milne Allan , Ibrahim A. Badiru
Abstract: A vehicle steer-by-wire system includes two front wheels of the vehicle, a steering wheel adapted to receive a steering input, and a steer-by-wire module configured to electronically transmit a steering signal to control a steering orientation of the two front wheels according to the steering input received at the steering wheel, sense a feedback parameter of the two front wheels, and supply a steering feedback signal to the steering wheel according to the sensed feedback parameter of the two front wheels. The system includes one or more vehicle sensors configured to sense at least one operating parameter of the vehicle, and a steering feedback control module configured to receive the at least one operating parameter of the vehicle, determine a driving intensity index according to the at least one operating parameter, and modify the steering feedback signal supplied to the steering wheel according to the determined driving intensity index.
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公开(公告)号：US10940884B2
公开(公告)日：2021-03-09
申请号：US16003324
申请日：2018-06-08
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Ibrahim A. Badiru
Abstract: An exemplary method for identifying and removing load biases correlated to a vehicle braking system includes providing a first vehicle sensor configured to measure a vehicle brake pressure of a vehicle brake assembly, providing a second vehicle sensor configured to measure one or more vehicle characteristics, providing a controller in communication with the first and second vehicle sensors, the vehicle brake assembly, and a vehicle steering system, receiving first sensor data indicative of the vehicle brake pressure and second sensor data indicative of the one or more vehicle characteristics, determining if a first condition is satisfied, and if the first condition is satisfied, generating a characterization table based on the first and second sensor data, and determining a brake-induced steering load from the first and second sensor data, wherein the characterization table includes data indicative of a relationship between the first and second sensor data.
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公开(公告)号：US10259495B2
公开(公告)日：2019-04-16
申请号：US15625066
申请日：2017-06-16
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Ibrahim A. Badiru
Abstract: An electronic control unit for a steer-by-wire vehicle steering system includes a data storage component that stores a desired lateral acceleration versus steering angle profile with regard to a range of vehicle speeds and a processor operably and electronically coupled with a steering wheel angle sensor and a yaw sensor. The data storage component includes electronic instructions that causes the processor to receive steering wheel angle data over a range of vehicle speeds, receive vehicle yaw data over the range of vehicle speed correlated to the steering wheel angle data, generate an observed lateral acceleration versus steering angle profile with regard to the range of vehicle speeds, and generate a steering ratio correction based on a comparison of the desired lateral acceleration versus steering angle profile and the observed lateral acceleration versus steering angle profile.
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公开(公告)号：US10442459B2
公开(公告)日：2019-10-15
申请号：US15643584
申请日：2017-07-07
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Brian N. Siskoy , Scott R. Kloess , Hossam Almasri , Silviu A. Popescu , Ibrahim A. Badiru
IPC: B62D5/00 , B62D5/04 , B60R16/023 , B60R16/03
Abstract: A vehicle and a steering system of a vehicle. The steering system includes a steering column emulator that generates an electrical driving signal in response to a driver input, a steering rack assembly that receives the electrical driving signal from the steering column emulator and controls steering of the vehicle as indicated by the received signal, and a backup system. The backup system provides a backup electrical driving signal to the steering rack assembly upon a failure of the steering column emulator, and the steering rack assembly steers the vehicle as indicated by the backup electrical driving signal upon the failure of the steering column emulator.
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公开(公告)号：US20190118855A1
公开(公告)日：2019-04-25
申请号：US15787883
申请日：2017-10-19
Applicant: GM Global Technology Operations LLC
Inventor： Bo Yu , Ibrahim A. Badiru , Scott R. Kloess
CPC classification number: B62D5/0481 , B62D5/001 , B62D5/0457 , B62D5/0472 , G05B15/02
Abstract: Examples of techniques for estimating stability margins in a steer-by-wire system are disclosed. In one example implementation, a method for open-loop steer-by-wire (SbW) system linearization includes linearizing, by a processing device, an open-loop SbW system at different operating points. The method further includes determining, by the processing device, an open-loop transfer function of the op en-loop SbW system. The method further includes estimating, by the processing device, margins of stability for the open-loop SbW system. The method further includes implementing the margins of stability into a vehicle to reduce instability in a steering system of the vehicle.
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Patent Agency Ranking
公开(公告)号：US20190023314A1
公开(公告)日：2019-01-24
申请号：US15653022
申请日：2017-07-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Coburn C. Bland, III , Bo Yu , Adam J. Kloess , Scott P. Sherman , Ibrahim A. Badiru
CPC classification number: B62D5/0481 , B62D5/0457 , B62D5/0463 , B62D6/00
Abstract: A power steering assembly includes a steering unit and a motor. A controller includes a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of self-diagnosis for the assembly. If a plurality of enabling conditions is met, the steering unit is caused to rotate through a plurality of angles from an original position, via a command to the motor. The steering unit is caused to rotate first in a forward direction up to a predefined maximum angle, second in a reverse direction up to a negative of the predefined maximum angle and third in the forward direction back to the original position. The controller is configured to obtain motor torque data characterizing torque of the motor at the plurality of angles. The assembly is controlled based at least partially on the motor torque data and predetermined baseline data.
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公开(公告)号：US09909954B2
公开(公告)日：2018-03-06
申请号：US14991238
申请日：2016-01-08
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Ibrahim A. Badiru , Nathan M. Picot
CPC classification number: G01M17/04 , B62D5/0457 , B62D6/00 , B62D65/00 , G01M17/06
Abstract: A method of quantifying a viscous damping steering feel characteristic of a vehicle equipped with an electric power steering system includes connecting the electric power steering (EPS) system to a rotary actuator and kingpin actuators of a simulator system, communicating a triangle wave control input from a simulator controller to the rotary actuator, and receiving outputs from sensors in the simulator system by the simulator controller in response to the triangle wave control input. The simulator controller is programmed to execute logic embodying a method using the triangle wave control input provided via the rotary actuator and deconvolution of the outputs remove phase lag between the input and output signals, to generate a deconvoluted hysteresis loop for each of a plurality of steering cycles conducted during a vehicle simulation event, and to characterize a viscous damping steering feel characteristic of the EPS system.
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公开(公告)号：US10518801B2
公开(公告)日：2019-12-31
申请号：US15787883
申请日：2017-10-19
Applicant: GM Global Technology Operations LLC
Inventor： Bo Yu , Ibrahim A. Badiru , Scott R. Kloess
Abstract: Examples of techniques for estimating stability margins in a steer-by-wire system are disclosed. In one example implementation, a method for open-loop steer-by-wire (SbW) system linearization includes linearizing, by a processing device, an open-loop SbW system at different operating points. The method further includes determining, by the processing device, an open-loop transfer function of the op en-loop SbW system. The method further includes estimating, by the processing device, margins of stability for the open-loop SbW system. The method further includes implementing the margins of stability into a vehicle to reduce instability in a steering system of the vehicle.
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9.发明申请公开(公告)号：US20190375451A1
公开(公告)日：2019-12-12
申请号：US16003583
申请日：2018-06-08
Applicant: GM Global Technology Operations LLC
Inventor： Ibrahim A. Badiru
Abstract: A method for optimizing vehicle steer-by-wire characteristics, includes collecting steer-by-wire steering system data for multiple predetermined data segments. Multiple driving quality objective indices are determined for each segment. A trend line is prepared based on the multiple predetermined data segments using a first algorithm, a second algorithm and a third algorithm, each assigned to one of the driving quality objective indices. Values obtained from the first algorithm, the second algorithm and the third algorithm are superimposed to create a net desired incremental change in damping, steering ratio and base assist. A steering calibration modification command is generated in real-time using the incremental change in damping, steering ratio and base assist.
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公开(公告)号：US10427711B2
公开(公告)日：2019-10-01
申请号：US15653022
申请日：2017-07-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Coburn C. Bland, III , Bo Yu , Adam J. Kloess , Scott P. Sherman , Ibrahim A. Badiru
Abstract: A power steering assembly includes a steering unit and a motor. A controller includes a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of self-diagnosis for the assembly. If a plurality of enabling conditions is met, the steering unit is caused to rotate through a plurality of angles from an original position, via a command to the motor. The steering unit is caused to rotate first in a forward direction up to a predefined maximum angle, second in a reverse direction up to a negative of the predefined maximum angle and third in the forward direction back to the original position. The controller is configured to obtain motor torque data characterizing torque of the motor at the plurality of angles. The assembly is controlled based at least partially on the motor torque data and predetermined baseline data.
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