David M Barta

US Patent:

6438473, Aug 20, 2002

Filed:

Mar 29, 2001

Appl. No.:

09/821550

Inventors:

David J. Barta - Dayton OH
Olivier Raynauld - Senlis, FR
Olivier Valee - Paris, FR

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

G06F 700

US Classification:

701 37, 280 5504, 280 5515

Abstract:

A method and system for controlling a vehicle suspension system comprise determining a relative velocity between a wheel and a corresponding corner of the vehicle, and determining responsive to the relative velocity a raw wheel demand force. The method and system also comprise determining a relative position between the wheel and the corresponding corner of a vehicle body, determining a scale factor responsive to the relative position of the wheel, modifying the raw wheel demand force as a function of the scale factor to determine a scaled wheel demand force, and controlling the vehicle suspension system responsive to the scaled wheel demand force.

US Patent:

6456912, Sep 24, 2002

Filed:

May 4, 2001

Appl. No.:

09/849026

Inventors:

Olivier Raynauld - Senlis, FR
David J. Barta - Dayton OH
David Andrew Shal - Bellbrook OH
Alexander Apostolos - Kronberg, DE
Olivier Valee - Paris, FR
Darin Duane Delinger - Tipp City OH
Albert Victor Fratini - Evanston IL
Chinh Trong Nguyen - Pittsburgh PA

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

G06F 700

US Classification:

701 37, 701 38, 280 55

Abstract:

A method, system and computer readable medium storing a computer program is provided for independent control of a variable force damper system. The variable force damper system can be applied to control a vehicle suspension system. The system provides individual wheel control independent of vehicle body forces. In operation, at least one relative velocity signal and at least one body demand force is received. At least one body damper command is determined based on the body demand force. At least one wheel motion indicating parameter is determined based on the relative velocity signal. At least one wheel damper command is determined based on the wheel motion indicating parameter and a damper command is determined based on the larger of the body damper command and the wheel damper command.

US Patent:

6758041, Jul 6, 2004

Filed:

Sep 12, 2002

Appl. No.:

10/242200

Inventors:

Todd A. Bishop - Centerville OH
William C. Kruckemeyer - Beavercreek OH
David J. Barta - Beavercreek OH

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F15B 700

US Classification:

60545

Abstract:

A brake apparatus and method utilize an electric power brake booster for operating a push rod actuated hydraulic master cylinder. The existing vehicle electrical system provides electric power for the power brake booster, thus eliminating the need for engine driven or auxiliary pressure/vacuum sources. The electric power brake booster includes an electrically powered actuator having an output shaft adapted for operative connection to the master cylinder, and an input for receipt of a signal indicative of force applied to the push rod. The electrically powered actuator augments the force applied to the push rod in response to the signal indicative of the force applied to the push rod. The booster may include a sensor for sensing force applied to the push rod and generating the signal indicative of the force applied to the push rod.

US Patent:

7240754, Jul 10, 2007

Filed:

Jun 14, 2004

Appl. No.:

10/866955

Inventors:

David J. Barta - Beavercreek OH, US
William C. Kruckemeyer - Beavercreek OH, US
Todd A. Bishop - Dayton OH, US
Stephan A. Lubbers - Dayton OH, US

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

B60D 33/006
B62D 33/01

US Classification:

180 8912, 280 5507, 29619007

Abstract:

A suspension system having a frame, a cab having a front portion pivotally mounted to the frame and at least one actuator mounted between a rear portion of the cab and the frame. A position sensor is mounted adjacent the rear portion of the cab for generating a first signal indicating a position of the cab relative to the frame, an accelerometer is mounted to the frame for generating a second signal indicating an acceleration of the frame relative to gravity and an electronic control receives the first and second signals from the position sensor and the accelerometer and generates a control signal for controlling the actuator in response to the first and second signals.

US Patent:

7440844, Oct 21, 2008

Filed:

Sep 23, 2005

Appl. No.:

11/234805

Inventors:

David John Barta - Beavercreek OH, US
Aleksander Boguslaw Hac - Dayton OH, US

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

G06G 7/48
G06G 7/00
G06G 7/76

US Classification:

701124, 701 70, 340 52, 280 55, 280 5502, 280 5507

Abstract:

A method and apparatus for determining likelihood of rollover of a vehicle and/or mitigating rollover of the vehicle is responsive to measured vehicle lateral acceleration and a measured one of vehicle roll rate and vehicle suspension displacements to derive estimates of roll angle and roll rate. First, preliminary, estimates of roll angle and roll rate are derived and used as pseudo-measurements in a dynamic, closed loop observer equation which represents a model of the vehicle in a first roll mode for roll angles small compared to a reference value indicating two wheel lift-off and a second roll mode for roll angles at least near a reference value indicating two wheel lift-off. The observer equation has parameters and gains with values for each mode stored as a function of roll angle index derived from measurements and pseudo-measured values. The observer equation produces second, improved values or roll angle and roll rate together indicating the likelihood of vehicle rollover. Rollover mitigating controls for brakes, active front steer, and/or active rear steer are also disclosed.

US Patent:

20030055549, Mar 20, 2003

Filed:

Aug 27, 2002

Appl. No.:

10/229367

Inventors:

David Barta - Beavercreek OH, US
Aleksander Hac - Dayton OH, US

International Classification:

G06F019/00

US Classification:

701/070000, 701/001000, 340/440000

Abstract:

A method and apparatus for determining likelihood of rollover of a vehicle and/or mitigating rollover of the vehicle is responsive to measured vehicle lateral acceleration and a measured one of vehicle roll rate and vehicle suspension displacements to derive estimates of roll angle and roll rate. First, preliminary, estimates of roll angle and roll rate are derived and used as pseudo-measurements in a dynamic, closed loop observer equation which represents a model of the vehicle in a first roll mode for roll angles small compared to a reference value indicating two wheel lift-off and a second roll mode for roll angles at least near a reference value indicating two wheel lift-off. The observer equation has parameters and gains with values for each mode stored as a function of roll angle index derived from measurements and pseudo-measured values. The observer equation produces second, improved values or roll angle and roll rate together indicating the likelihood of vehicle rollover. Rollover mitigating controls for brakes, active front steer, and/or active rear steer are also disclosed.

US Patent:

20030195683, Oct 16, 2003

Filed:

Apr 4, 2003

Appl. No.:

10/407381

Inventors:

Robin Oakley - Trumilly, FR
David A. Shal - Bellbrook OH, US
David J. Barta - Beavercreek OH, US

Assignee:

DELPHI TECHNOLOGIES INC.

International Classification:

B60G017/00

US Classification:

701/037000, 280/005500

Abstract:

The invention provides a method of controlling at least one magnetorheological damper. The invention also provides a computer usable medium including a program and a suspension control system for achieving the same. The method includes calculating a power input coefficient based on at least one power input characteristic. A power dissipation coefficient is calculated based on at least one power dissipation characteristic. A damper temperature is estimated based on the calculated power input coefficient and the calculated power dissipation coefficient. At least one dampening force characteristic is modulated based on the estimated damper temperature.

US Patent:

20040046336, Mar 11, 2004

Filed:

Aug 20, 2003

Appl. No.:

10/644175

Inventors:

Eric Jensen - Dayton OH, US
Todd Bishop - Centerville OH, US
William Kruckemeyer - Beavercreek OH, US
Mark Bodie - Dayton OH, US
David Barta - Beavercreek OH, US

International Classification:

B60G017/01

US Classification:

280/005511

Abstract:

A suspension system for a vehicle. A control arm is attachable to the vehicle frame by a first bushing and by a second bushing and is attachable to the knuckle by a ball joint. A torsion spring assembly has a torsion tube and a torsion bar positioned within the torsion tube. A first end portion of the torsion bar is attached to a first end portion of the torsion tube, and a second end portion of the torsion bar extends beyond a second end of the torsion tube and is attached to the control arm. No portion of the torsion tube is immobilized with respect to the frame. A moment bar has a first end portion attached to the torsion tube and has a second end portion attachable to the frame.