Joan V Arwine

20020084692, Jul 4, 2002

Jan 3, 2001

09/754420

Joan Arwine - Springboro OH, US
Jon Zumberge - Dayton OH, US

DELPHI AUTOMOTIVE SYSTEMS

B60T008/34
B60T013/70

303/113100, 303/015000, 303/166000

Systems and methods are disclosed to control a braking system. One method provides a command signal to a valve to control fluid pressure to a wheel brake in a braking system includes the steps of determining a pressure signal using a first control technique based on a first set for control gains and a pressure command signal, determining a first current signal based upon the pressure command signal, subtracting an actual pressure signal from the pressure command signal to produce an error signal, and determining a second current signal using a second control technique based on the second set of control gains and the error signal. The method further includes subtracting a supply pressure actual signal from a supply pressure nominal signal to produce a pressure differential signal, multiplying the pressure differential signal by a selected gain to produce a third current signal, and summing the first current signal, the second current signal and the third current signal to produce an output signal. One braking system includes a master cylinder for delivering pressurized fluid in response to a mechanical input. A first sensor provides a supply pressure signal in response to fluid pressure delivered by an accumulator. A second sensor provides a wheel pressure signal in response to fluid pressure applied to at least one wheel brake. A controller is responsive to the wheel pressure signal and supply pressure signal to produce a pressure command signal. The controller implements the steps of determining a first current signal using a first control technique based on a first set for control gains and the pressure command signal, determining an actual pressure signal based upon the wheel pressure signal. subtracting an actual pressure signal from the pressure command signal to produce an error signal, and determining a second current signal using a second control technique based on a second set of control gains and the error signal. The controller also implements the steps of subtracting the supply pressure signal from a supply pressure nominal signal to produce a pressure differential signal, multiplying the pressure differential signal by a selected gain to produce a third current signal, and summing the first current signal, the second current signal and the third current signal to produce an output signal.

53320611, Jul 26, 1994

Mar 12, 1993

8/030965

Kamal N. Majeed - Centerville OH
John F. Hoying - Centerville OH
Joan B. Arwine - Vandalia OH

General Motors Corporation - Detroit MI

B62D13100
B60K 512

180312

An active vibration control (AVC) system is disclosed for attenuating vibrational frequency components generated by an engine and transferred through an engine mounting unit to vibrate a motor vehicle body. The motor vehicle is characterized by sprung mass and unsprung mass natural resonant frequencies at which the body also vibrates when the vehicle is driven over an undulating road surface. The AVC system operates by generating input signals representing different vibrational frequency components generated by the engine based upon sensed changes in engine rotation. Each input signal is filtered by an adaptive filter to produce a respective output signal. The output signals are summed to produce a canceling signal for driving an inertial mass shaker mounted on the body. The shaker inversely vibrates the body with respect to the different vibrational frequency components transferred to the body from the engine. A vibration sensor mounted to the body proximate the shaker monitors body vibration and develops a representative error signal.

55702899, Oct 29, 1996

Mar 27, 1995

8/410794

Scott A. Stacey - Kettering OH
Joan B. Arwine - Miamisburg OH

General Motors Corporation - Detroit MI

B60G 1700

36442405

A suspension system control according to the steps of: measuring a set of parameters indicative of motion of a body of the vehicle and of motion of wheels of the vehicle; determining a body demand force responsive to the measured parameters; determining a set of wheel demand forces responsive to the measured parameters; for each wheel of the vehicle: comparing the body demand force and the corresponding wheel demand force to determine whether the body demand force and the corresponding wheel demand forces are in phase; if the body demand force and the corresponding wheel demand force are in phase, determining a damper command responsive to the greater of the body and corresponding wheel demand force; if the body demand force and the corresponding wheel demand force are out of phase, determining the damper command responsive to the sum of the body demand force and the corresponding wheel demand force; and applying the determined damper command to a controllable variable force damper, wherein wheel vertical velocity occurring after a suspension event is minimized without sacrifice to passenger isolation from the suspension event.