Delphi Technologies, Inc.

Steering Solutions IP Holding Corporation

Gm Global Technolgoy Operations, Inc.

Bayerische Motoren Werke Aktiengesellschaft

Ashok Chandy

Julie Ann Kleinau

Steven James Collier-Hallman

Kathryn L Pattok

Mark Philip Colosky

Farhad Bolourchi

Scott Alan Millsap

Timothy Wesley Kaufmann

Hsien Heng Chen

Joel Edward Birsching

Jeffery Alan Zuraski

Kevin L Derry

Hans-Peter Hank

Christophe Etienne

Ravindra P Patankar

Caroline Dannöhl

Deepak Chhaya

Jens Schotte

Kristian Vetter

Prerit Pramod

Yuen-Kwok Chin

Mohammad S Islam

Tejas M Varunjikar

Weiwen Deng

Aleksander Boguslaw Hac

Ronald Henry Dybalski

Frederick J Berg

Timothy M Phillips

Troy P Strieter

Edward John Bedner

Dennis B Skellenger

Timothy J Bennett

Sanket S Amberkar

James Myrl Card

Michael A Eickholt

Stephen Vincent Gillman

Rakesh Mitra

William Chin-Woei Lin

Daniel W Shafer

John D Martens

James M Petrowski

Michael John Check

Mark Dennis Kushion

Eugene Thomas Tanke, Ii

Chester W Gryczan

Todd David Brown

Terrence D Smith

Jeff Zuraski

Nabeel Bitar

Timoty W Kaufmann

Kathryn Lynn Pattok

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.

Fault tolerant field oriented control for electric power steering

An embodiment of a system of a vehicle includes a power steering system that operates as commanded by control commands, and a control module configured to receive a first control command. The control module is also configured to generate a range signal indicative of a range of command values based on a plurality of input signals, generate a second control command based on a subset of the plurality of input signals, determine whether the first control command is out of the range for longer than a predetermined duration of time, and send the second control command to the power steering system in response to determining the first control command is out of the range for longer than the predetermined duration of time.

Systematic abnormality detection in control commands for controlling power steering system

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.

Sensor fusion for autonomous driving transition control

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.

Steering compensation with grip sensing

A system for haptic feedback for steering system controls includes a touch sensor input detection module and an actuator haptic response driver module. The touch sensor input detection module acquires a touch sensor input from one or more touch sensors of a steering system and identifies a touch gesture type of the touch sensor input. The actuator haptic response driver module determines a desired haptic feedback associated with the touch gesture type and controls a steering system actuator to produce a haptic response based on the desired haptic feedback.

Haptic feedback for steering system controls

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.

Method of controlling an inverter during MOSFET shorts

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.

Active-damping based approach to mitigate effects of rack disturbances on EPS systems

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.

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.

Cross check strategy for systematic error protection

A control system for controlling an electric power steering system is provided. The control system includes a first module configured to compute an on-center torque adjustment compensation based on a sensed handwheel torque. The on-center torque adjustment compensation is configured to compensate for inertia of a steering actuator motor using a frequency-based methodology. The control system also includes a second module configured to generate a command signal to control the steering actuator motor of the electric power steering system based on the on-center torque adjustment compensation.

Torque-based on-center feel for electric power steering

A system for indicating an impending vehicle maneuver within a predetermined distance is provided. The system includes a navigational system and a control module. The navigational system receives a vehicle destination and determines a current geographical vehicle position. The navigational system determines if the impending vehicle maneuver is required within the predetermined distance based on the vehicle destination and the current geographical vehicle position. The control module is in communication with the navigational system and a handwheel. The control module sends a signal that creates a steering assist torque in the handwheel if the impending vehicle maneuver is required.

System for indicating an impending vehicle maneuver

A control system for providing an assist torque is provided. The control system includes a control algorithm module and a comfort limit module. The control algorithm module calculates a corrective steering torque based on a target vehicle state and an estimated vehicle state. The comfort limit module receives a handwheel torque. The comfort limit module calculates a limited corrective steering torque based on the corrective steering torque and the handwheel torque. The limited steering torque represents an allowable amount of the assist torque provided by the control system.

System for providing assist torque based on a vehicle state

A control system for a steering system is provided. The control system includes a direction determination module, a position determination module, and a final command module. The direction determination module determines a change in a handwheel torque. The position determination module determines a position on a hysteresis loop. The position on the hysteresis loop depends on the change in the handwheel torque. The final command module determines a final assist value based on the position. The final command module generates an assist command.

Electric power steering control methods and systems using hysteresis compensation

An actuator assembly including, a polar assembly including an inner tooth and an outer tooth, and a magnet disposed between the inner tooth and the outer tooth, the magnet operative to interact with the polar assembly to induce an electromagnetic torsion bar operative to impart a torque on a first shaft connected to the ring magnet.

Methods and systems involving electromagnetic torsion bars

A control system for controlling a steering system is provided. The control system includes a first module that determines a hysteresis position based on handwheel velocity and handwheel torque. A second module selectively determines an assist curve based on the hysteresis position. A third module generates a final assist command based on the assist curve.

Electric power steering control methods and systems

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Fenton, MI, United States of America

Ashok Chandy