Scott Sherman

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:

6735507, May 11, 2004

Filed:

Jun 4, 2003

Appl. No.:

10/454447

Inventors:

Paul A. Grougan - Novi MI
Kenneth D. Norman - Ann Arbor MI
Thomas C. Zebehazy - Rochester MI
Scott P. Sherman - Fenton MI
Karen A. Boswell - Freeland MI
Steven D. Klein - Munger MI
Charles R. Worner - Freeland MI

Assignee:

General Motors Corporation
Delphi Technologies, Inc. - Troy MI

International Classification:

B62D 600

US Classification:

701 41, 180408, 180418, 180445

Abstract:

An all wheel steering system for a vehicle comprising a controller having a first input for receiving a signal from a hand wheel position sensor, a second input for receiving a signal from a vehicle speed sensor, and a third input for receiving a signal that varies depending upon whether a trailer is hitched the vehicle. The controller generates an output for controlling a rear wheel steering actuator. The output varies as a function of the first, second, and third inputs such that when a trailer is hitched to the vehicle the out-of-phase rear steer amount at low speeds is reduced and the in-phase rear steering amount at high speeds is increased.

US Patent:

20190328080, Oct 31, 2019

Filed:

Mar 1, 2013

Appl. No.:

16/068894

Inventors:

Scott Sherman - Roslyn NY, US

International Classification:

A43B 7/14

Abstract:

An orthotic device having a plantar support surface to support the plantar (sole) of the forefoot portion of the foot. The plantar support surface has two walls on opposing sides. One wall supports the outer portion of the big toe and the other wall supports the outer portion of the small toe. These walls act immobilize the forefoot region of the foot and more importantly immobilize the big toe effectively eliminating or reducing pain associated with movement of the big toe due to conditions such as hallux limitus or hallux rigidus.

US Patent:

20180308296, Oct 25, 2018

Filed:

Apr 25, 2017

Appl. No.:

15/496812

Inventors:

- Detroit MI, US
Jonathan Hirscher - Waterford MI, US
Scott P. Sherman - Fenton MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

G07C 5/08
B62D 15/02
G07C 5/00
B62D 5/04
G06F 17/50

Abstract:

Disclosed are emulator architectures for steer-by-wire (SBW) vehicle systems, methods for making and for using such systems, and programmable control logic for operating emulator test systems. A method is disclosed for operating an emulator test system for motor vehicle SBW systems. The method includes a Central Processing Unit Workstation Controller (CWC) initiating a selected test procedure for the SBW system, and transmitting, to a Motor Controller (MC) of the test system, a target input curve corresponding to the initiated test procedure. The MC responsively commands a Driver Simulator Motor (DSM) to operate at a power input corresponding to the target input curve. An emulator, which is mechanically coupled to the DSM, transmits emulator state data resulting from operating the DSM to a Real-time Operating System (RTOS). The RTOS determines a vehicle response based on the emulator state data using a vehicle dynamics math model corresponding to the SBW system.