William W Lin

US Patent:

6560524, May 6, 2003

Filed:

Sep 26, 2001

Appl. No.:

09/963770

Inventors:

William Chin-Woei Lin - Troy MI
David Michael Sidlosky - Huntington Woods MI
David S. Rule - Orchard Lake MI
Weiwen Deng - Rochester Hills MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

G06F 700

US Classification:

701 70, 180 62, 303140

Abstract:

There is disclosed a method for integrating a vehicle stability enhancement system and rear wheel steering. The method includes inputting a vehicle speed and measured vehicle yaw rates. Determining a front and rear wheel steer angle. Calculating a desired yaw rate. Comparing the measured yaw rate with the desired yaw rate to determine a yaw error term. Applying a braking force to a wheel of a vehicle imparting a yaw moment based upon the magnitude of the error term calculated. The rear wheel steer angle is taken into account in calculating a desired yaw rate.

US Patent:

6580988, Jun 17, 2003

Filed:

Nov 6, 2001

Appl. No.:

09/992505

Inventors:

William Chin-Woei Lin - Troy MI
Weiwen Deng - Sterling Heights MI
Scott P. Sherman - Fenton MI
Paul A. Grougan - Novi MI
Eugene A. Rodden - Gilbert AZ

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B62D 504

US Classification:

701 41, 180443, 180445

Abstract:

A method is disclosed for controlling the rear wheel angle in a four-wheel steering vehicle such as a pickup truck. The front wheels are steered using the conventional operator handwheel linked to the front wheels. The rear wheels are actuated with a reversible electric motor and the rear wheel angle controlled using a computer with inputs of vehicle velocity, operator handwheel position and correlated front wheel angle, and handwheel turning rate. Control of rear wheel angle starts with a correlation of ratios of rear wheel angle to front wheel angle, R/F, vs. vehicle velocity suitable, determined under steady state front steering angle and velocity conditions, to maximize the contribution of the rear wheels while avoiding side-slip of the vehicle. It is found that driver steering feel and vehicle maneuverability is improved by imposing a minimum front wheel angle requirement before rear wheel steering is permitted and by modifying the current value of R/F with gain factors base d on the hand wheel angle and rate of motion.

US Patent:

6819998, Nov 16, 2004

Filed:

Nov 26, 2002

Appl. No.:

10/305426

Inventors:

William C. Lin - Troy MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

G06F 1700

US Classification:

701 70, 701 69, 701 78, 701 81

Abstract:

A vehicle stability enhancement system for a vehicle having a vehicle subsystem includes a sensor for sensing a vehicle parameter, a vehicle control system for adjusting the vehicle subsystem, a memory having a register that includes a bank angle compensation control command, and a controller responsive to the sensor and the memory for controlling the vehicle control system.

US Patent:

6856885, Feb 15, 2005

Filed:

Apr 1, 2003

Appl. No.:

10/404371

Inventors:

William C. Lin - Troy MI, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

G06F019/00

US Classification:

701 70, 701 36, 303146, 477 34, 477107, 340438

Abstract:

A side-slip velocity estimation module for a vehicle stability enhancement control system includes a side-slip acceleration estimation module that determines an estimated side-slip acceleration of a vehicle. A limited-frequency integrator integrates the estimated side-slip acceleration to determine an estimated side-slip velocity of the vehicle. A reset logic module clears an output of the limited-frequency integrator when a first condition occurs. The first condition is one of a straight-driving condition, a speed condition, and a sensor bias condition. The estimated side-slip velocity is compared to a desired side-slip velocity to produce a side-slip control signal. The side-slip control signal is combined with a yaw rate control signal to produce an actuator control signal. The actuator control signal is received by one of at least one brake actuator and a rear-wheel steering actuator to create a yaw moment to correct a dynamic behavior of the vehicle.

US Patent:

6856886, Feb 15, 2005

Filed:

Mar 23, 2004

Appl. No.:

10/806674

Inventors:

William C. Lin - Troy MI, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

G06F019/00

US Classification:

701 70, 701 36, 303146, 477 34, 477107, 340438

Abstract:

A side-slip velocity estimation module for a vehicle stability enhancement control system includes a side-slip acceleration estimation module that determines an estimated side-slip acceleration of a vehicle. A limited-frequency integrator integrates the estimated side-slip acceleration to determine an estimated side-slip velocity of the vehicle. The limited-frequency integrator includes a feedback loop which incorporates a cutoff frequency for the integrator.

US Patent:

6865468, Mar 8, 2005

Filed:

Nov 26, 2002

Appl. No.:

10/305378

Inventors:

William C. Lin - Troy MI, US
Weiwen Deng - Rochester Hills MI, US
David S. Rule - Waterford MI, US
David P. Lynch - West Bloomfield MI, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

G06F017/00
G06F007/00
B60K017/34

US Classification:

701 70, 701 41, 180408

Abstract:

A vehicle stability enhancement system for a vehicle having at least one vehicle subsystem includes at least one sensor for sensing at least one vehicle parameter, at least one vehicle control system for adjusting the at least one vehicle subsystem wherein the at least one vehicle control system includes a rear wheel steering control system, at least one memory including at least one set of gain factors, and a controller responsive to the at least one sensor and the at least one set of gain factors for controlling the at least one vehicle control system.

US Patent:

6965820, Nov 15, 2005

Filed:

Sep 18, 2001

Appl. No.:

09/954886

Inventors:

Sanket S. Amberkar - Ann Arbor MI, US
Ashok Chandy - Fenton MI, US
Kathryn L. Pattok - Wiesbaden, DE
Mark P. Colosky - Saginaw MI, US
William Chin-Woei Lin - Troy MI, US
Weiwen Deng - Sterling Heights MI, US

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

A01B069/00
B62D011/00
B63G008/20
G05D001/00

US Classification:

701 41, 701 42, 180443, 180446

Abstract:

A controller () for a vehicular system () that includes a hand-wheel () and an electric motor () includes a torque-assist function () responsive to a signal representing the torque applied to the hand-wheel () for providing a torque-assist command to the motor (), and a steering-pull compensator () responsive to a signal representing a valid ignition cycle for modifying the torque-assist command to the motor () by an offset corresponding to a detected steering-pull condition; where the method of control includes receiving the signal indicative of the torque applied to the hand-wheel (), providing a torque-assist command to the motor () in response to the received torque signal, detecting an enabling signal related to the signal representing a valid ignition cycle, quantifying a steering-pull condition in response to the received and detected signals, and modifying the torque-assist command to the motor () by an offset corresponding to the quantified steering-pull condition.

US Patent:

7099760, Aug 29, 2006

Filed:

Apr 20, 2004

Appl. No.:

10/828074

Inventors:

William C. Lin - Troy MI, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B62D 5/04

US Classification:

701 41, 701 42, 701 70, 180445, 180197, 303146, 303139

Abstract:

A control system that employs closed-loop control for providing active vehicle rear-wheel steering, where the control system receives longitudinal wheel slip inputs to improve the vehicle directional stability. The longitudinal wheel slip inputs can be from one or more of wheel speed, traction control on and automatic braking system on. The control system includes an open-loop controller for generating an open-loop steering control signal, a yaw rate feedback controller for generating a yaw rate feedback signal, and a side-slip rate controller for generating a side-slip rate feedback signal. The open-loop steering control signal, the yaw rate feedback signal and the side-slip rate feedback signal are combined to generate the steering control signal to steer the vehicle rear wheels.

Address:

226 Jamaicaway APT 9, Jamaica Plain, MA 02130

Phone:

6179130305

VIN:

WBAKF9C57BE247215

Make:

BMW

Model:

3 SERIES

Year:

2011