Patents by Inventor Hsien H. Chen
Hsien H. Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7191047Abstract: A control system manages yaw-plane motion, while simultaneously comprehending and managing roll motion. The system reduces excessive maneuver-induced roll motion by properly shaping yaw-plane motion, which may include increasing yaw damping and/or decreasing a yaw gain, under various conditions, to avoid excessive excitation of roll dynamics.Type: GrantFiled: December 21, 2004Date of Patent: March 13, 2007Assignee: Delphi Technologies, Inc.Inventors: Hsien H. Chen, Edward J. Bedner, Aleksander B. Hac
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Patent number: 6862506Abstract: A method for automatically adjusting a vehicle stability enhancement (VSE) system is disclosed. The VSE system is used in conjunction with a steering system having a plurality of driver-selectable steering modes associated therewith. In an exemplary embodiment, the method includes configuring a reference model within the VSE system to generate desired vehicle handling aspects, the desired vehicle handling aspects being a function of one or more driver inputs to the steering system. Then, a determination is made as to which of the plurality of driver-selectable steering modes is activated, wherein each of the desired vehicle handling aspects generated is made further dependent upon a specific steering mode selected.Type: GrantFiled: February 19, 2002Date of Patent: March 1, 2005Assignee: Delphi Technologies, Inc.Inventors: Karen A. Boswell, John D. Martens, Edward J. Bedner, Brian P. McDonald, Hsien H. Chen
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Patent number: 6804594Abstract: A control system for a steering system in a vehicle comprising: a reference model responsive to an operator input that computes desired states of the vehicle; a feedforward controller in operable communication with the reference model. The feedforward controller computes a first control value based on input from said reference model and based on at least one of: a lateral velocity, a rate of lateral velocity, a lateral acceleration, and a combination, wherein the combination includes a yaw rate with at least one of a lateral velocity, a rate of lateral velocity, and a lateral acceleration of the motor vehicle. The system also includes an actuator for affecting the steering system based on the first control value, the actuator in operable communication with the feedforward controller.Type: GrantFiled: March 28, 2003Date of Patent: October 12, 2004Assignee: Delphi Technologies, Inc.Inventors: Hsien H. Chen, John D. Martens, Todd D. Brown, Ashok Chandy, Chester W. Gryczan
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Publication number: 20040193345Abstract: A control system for a steering system in a vehicle comprising: a reference model responsive to an operator input that computes desired states of the vehicle; a feedforward controller in operable communication with the reference model. The feedforward controller computes a first control value based on input from said reference model and based on at least one of: a lateral velocity, a rate of lateral velocity, a lateral acceleration, and a combination, wherein the combination includes a yaw rate with at least one of a lateral velocity, a rate of lateral velocity, and a lateral acceleration of the motor vehicle. The system also includes an actuator for affecting the steering system based on the first control value, the actuator in operable communication with the feedforward controller.Type: ApplicationFiled: March 28, 2003Publication date: September 30, 2004Inventors: Hsien H. Chen, John D. Martens, Todd D. Brown, Ashok Chandy, Chester W. Gryczan
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Patent number: 6643573Abstract: A method for automatically adjusting a vehicle stability enhancement (VSE) system. The VSE system is used in conjunction with a steering system having a plurality of driver-selectable steering modes associated therewith. The method includes configuring a reference model within the VSE system to generate desired vehicle handling aspects, the desired vehicle handling aspects being a function of one or more driver inputs to the steering system. Then, a determination is made as to which of the plurality of driver-selectable steering modes is activated, wherein each of the desired vehicle handling aspects generated is made further dependent upon a specific steering mode selected, and wherein the desired vehicle handling aspects include a desired steady state yaw rate; and the one or more driver inputs includes an effective road wheel position.Type: GrantFiled: February 19, 2002Date of Patent: November 4, 2003Assignee: Delphi Technologies, Inc.Inventors: John E. Dickinson, Hsien H. Chen
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Publication number: 20030158641Abstract: A method for automatically adjusting a vehicle stability enhancement (VSE) system is disclosed. The VSE system is used in conjunction with a steering system having a plurality of driver-selectable steering modes associated therewith. The method includes configuring a reference model within the VSE system to generate desired vehicle handling aspects, the desired vehicle handling aspects being a function of one or more driver inputs to the steering system. Then, a determination is made as to which of the plurality of driver-selectable steering modes is activated, wherein each of the desired vehicle handling aspects generated is made further dependent upon a specific steering mode selected, and wherein said desired vehicle handling aspects comprises a desired steady state yaw rate; and said one or more driver inputs comprises an effective road wheel position.Type: ApplicationFiled: February 19, 2002Publication date: August 21, 2003Inventors: John E. Dickinson, Hsien H. Chen
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Patent number: 6546324Abstract: A control system for a motor vehicle subsystem comprises a reference model and a feedforward controller. The reference model computes desired states of the subsystem. The feedforward controller computes a first control value based on input from the reference model, and computes a second control value based on yaw rate of the vehicle and a control variable for the subsystem.Type: GrantFiled: November 13, 2001Date of Patent: April 8, 2003Assignee: Delphi Technologies, Inc.Inventors: Hsien H. Chen, Ashok Chandy
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Publication number: 20030055547Abstract: A control system for a motor vehicle subsystem comprises a reference model and a feedforward controller. The reference model computes desired states of the subsystem. The feedforward controller computes a first control value based on input from the reference model, and computes a second control value based on yaw rate of the vehicle and a control variable for the subsystem.Type: ApplicationFiled: November 13, 2001Publication date: March 20, 2003Applicant: DELPHI TECHNOLOGIES INC.Inventors: Hsien H. Chen, Ashok Chandy
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Publication number: 20030045980Abstract: A method for automatically adjusting a vehicle stability enhancement (VSE) system is disclosed. The VSE system is used in conjunction with a steering system having a plurality of driver-selectable steering modes associated therewith. In an exemplary embodiment, the method includes configuring a reference model within the VSE system to generate desired vehicle handling aspects, the desired vehicle handling aspects being a function of one or more driver inputs to the steering system. Then, a determination is made as to which of the plurality of driver-selectable steering modes is activated, wherein each of the desired vehicle handling aspects generated is made further dependent upon a specific steering mode selected.Type: ApplicationFiled: February 19, 2002Publication date: March 6, 2003Inventors: Karen A. Boswell, John D. Martens, Edward J. Bedner, Brian P. McDonald, Hsien H. Chen
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Publication number: 20020143451Abstract: An integrated active steering and braking control system for providing one or more corrective yaw moments to a vehicle in response to a plurality of signals indicative of operational and environmental conditions related to the vehicle is disclosed. The system comprises a reference model, an estimator, a vehicle level brake/steer controller, and an actuator controller. The reference model provides a feedforward front steering angle correction signal a feedforward rear steering angle correction signal, a desired yaw rate signal, a desired lateral velocity signal, and a desired side slip angle signal. The estimator provides an estimated surface coefficient of adhesion signal, an estimated lateral velocity signal, and an estimated side slip angle signal. In response to the signals from the reference model and the estimator, the vehicle level brake/steer controller provides either a desired speed differential signal, a desired front steering angle signal and/or a desired rear steering angle signal.Type: ApplicationFiled: January 25, 2001Publication date: October 3, 2002Applicant: DELPHI AUTOMOTIVE SYSTEMSInventors: Aleksander B. Hac, Hsien H. Chen, Edward J. Bedner, Steven P. Loudon
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Patent number: 6453226Abstract: An integrated active steering and braking control system for providing one or more corrective yaw moments to a vehicle in response to a plurality of signals indicative of operational and environmental conditions related to the vehicle is disclosed. The system comprises a reference model, an estimator, a vehicle level brake/steer controller, and an actuator controller. The reference model provides a feedforward front steering angle correction signal a feedforward rear steering angle correction signal, a desired yaw rate signal, a desired lateral velocity signal, and a desired side slip angle signal. The estimator provides an estimated surface coefficient of adhesion signal, an estimated lateral velocity signal, and an estimated side slip angle signal. In response to the signals from the reference model and the estimator, the vehicle level brake/steer controller provides either a desired speed differential signal, a desired front steering angle signal and/or a desired rear steering angle signal.Type: GrantFiled: January 25, 2001Date of Patent: September 17, 2002Assignee: Delphi Technologies, Inc.Inventors: Aleksander B. Hac, Hsien H. Chen, Edward J. Bedner, Steven P. Loudon
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Patent number: 6325469Abstract: A brake system control for use in a vehicle with four wheels comprising the steps of: determining a desired yaw rate (454); determining a yaw torque command responsive to the desired yaw rate (806); if the vehicle is in an anti-lock braking mode during driver commanded braking, applying the yaw torque command to only one of the four wheels to release brake pressure in said one of the four wheels (258-266, 274, 278, 280, 410-418); if the vehicle is in a positive acceleration traction control mode during driver commanded acceleration, applying the yaw torque command to only one of the four wheels to apply brake pressure in said one of the four wheels (258-266, 288-292, 410-418); and if the vehicle is not in the anti-lock braking mode or in the positive acceleration traction control mode, then: (i) determining whether a vehicle brake pedal is depressed (370); (ii) if the vehicle brake pedal is depressed, applying brake force to the vehicle wheels responsive to the depression of the brake pedal (374, 412, 418), wType: GrantFiled: September 7, 1999Date of Patent: December 4, 2001Assignees: General Motors Corporation, Delphi Technologies, Inc.Inventors: Douglass L Carson, Ronald Paul, Michael D Rizzo, Stephen R Pastor, Duane E Bassett, Hsien H Chen, Yuen-Kwok Chin, Youssef A Ghoneim, Hong X Hu, Alan J Lee, William C Lin, Michael P Turski