Daniel S Maitlen

US Patent:

8165769, Apr 24, 2012

Filed:

Mar 2, 2009

Appl. No.:

12/396022

Inventors:

Hualin Tan - Novi MI, US
Daniel S. Maitlen - Farmington Hills MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

G06F 17/00
B60T 8/24

US Classification:

701 70, 701 72

Abstract:

A method of estimating a speed of a vehicle is provided. The vehicle has a wheel and the method comprises receiving a first wheel speed signal indicating a rotation rate of the wheel, determining a first calculated forward speed of the vehicle based on the first wheel speed signal, receiving a first steering signal, determining the first steering signal contains information indicating large steering activity, receiving a second wheel speed signal at a later time than the first wheel speed signal, and determining, in response to receiving the first steering signal, a second calculated forward speed of the vehicle that is based on the second wheel speed signal and the first calculated forward speed.

US Patent:

8412435, Apr 2, 2013

Filed:

Oct 8, 2007

Appl. No.:

11/868807

Inventors:

Daniel S. Maitlen - Farmington Hills MI, US

Assignee:

GM Global Technology Operations, LLC - Detroit MI

International Classification:

G06F 17/00
G05D 1/00

US Classification:

701 82, 701 38, 701 70, 701 71, 701 80, 701 90, 701 91, 303139, 303140, 303146, 303148, 303149, 303150, 180197

Abstract:

A system, method and computer program product is provided for detecting if a vehicle has spun. A normal force and a lateral force of each of a front and rear axle of a vehicle is estimated. A coefficient of friction representative of a surface is estimated. Lateral momenta of the front and rear axles based on the coefficient of friction and the normal and lateral forces is calculated. Whether a surplus momentum is present, is determined. If the surplus momentum is present, a yaw rate of the vehicle is integrated respect to time to obtain a vehicle rotation estimation.

US Patent:

20090093993, Apr 9, 2009

Filed:

Oct 8, 2007

Appl. No.:

11/868797

Inventors:

DANIEL S. MAITLEN - FARMINGTON HILLS MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - DETROIT MI

International Classification:

G01P 3/00

US Classification:

702148

Abstract:

A system, method and computer program product is provided for detecting if a vehicle is stopped. A wheel speed, transmission output speed, and a vehicle state, representative of a plurality of vehicle dynamic parameters, is determined. The vehicle is determined to be stopped if, after a predetermined period of time, the wheel speed and transmission output speed remain zero and the vehicle state remains stable.

US Patent:

20140046565, Feb 13, 2014

Filed:

Aug 12, 2013

Appl. No.:

13/964653

Inventors:

- Stuttgart, DE
Daniel Sigfus Maitlen - Farmington Hills MI, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

B60T 8/17
B60T 8/32

US Classification:

701 70

Abstract:

A trailer brake control method for a vehicle towing a trailer. The method may include determining a number (N) of vehicle operating points during a first braking event when the vehicle is not towing the trailer by determining N brake operating points; determining an acceleration operating point for each of the N brake operating points; and determining a first relationship between brake pressure and vehicle acceleration based on the N vehicle operating points. The method also includes determining a number (M) of vehicle operating points during a second braking event when the vehicle is towing the trailer; determining a current brake operating point; and determining a trailer brake command signal based on at least the first relationship, the M vehicle operating points, and the current brake operating point.

US Patent:

20140046566, Feb 13, 2014

Filed:

Aug 12, 2013

Appl. No.:

13/964661

Inventors:

- Stuttgart, DE
Daniel Sigfus Maitlen - Farmington Hills MI, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

B60T 8/32
B60T 8/17

US Classification:

701 70

Abstract:

A trailer brake control method that includes determining, based on information from a vehicle speed sensor, a current vehicle speed of a vehicle; and regardless of the current vehicle speed, determining, using a processing unit, a minimum trailer brake control value (MTBCV) based on the equation MTBCV=R1−Cth root(the current vehicle speed)/R2, wherein the minimum trailer brake control value corresponds to a minimum braking force at the current vehicle speed, R1 is a real number less than 1.0, C is an integer greater than 2, and R2 is a real number greater than 1.0. The method also includes determining, using the processing unit, a trailer brake command signal based on the minimum trailer brake control value; and operating brakes of a trailer connected to the vehicle at or above the minimum braking force by transmitting the trailer brake command signal from the vehicle to a trailer.

US Patent:

20210208588, Jul 8, 2021

Filed:

Jan 7, 2020

Appl. No.:

16/735975

Inventors:

- Detroit MI, US
Grant A. Soremekun - Pacifica CA, US
Daniel S. Maitlen - South Lyon MI, US

International Classification:

G05D 1/02
G05B 17/02
G08G 1/0968
G08G 1/01
B60R 11/04

Abstract:

Examples described herein provide a computer-implemented method that includes defining, by a processing device, a plurality of parameters so that any orthogonal intersection can be described. The method further includes building, by the processing device, an orthogonal parameterized model that can represent any orthogonal intersection based at least in part on the plurality of parameters that can describe any intersection of interest. The method further includes expanding, by the processing device, the orthogonal parameterized model to generate a fully parameterized intersection model that accounts for intersection complexities. The method further includes building, by the processing device, a low-fidelity analytical that computes various metrics based on the fully parameterized intersection model.

US Patent:

20200041304, Feb 6, 2020

Filed:

Jul 31, 2018

Appl. No.:

16/050189

Inventors:

- Detroit MI, US
Amin Abdossalami - Toronto, CA
Norman J. Weigert - Whitby, CA
Daniel S. Maitlen - Farmington Hills MI, US
David M. Sidlosky - Beverly Hills MI, US

International Classification:

G01C 22/00
G06T 7/246

Abstract:

A method for producing high resolution virtual wheel speed sensor data includes simultaneously collecting wheel speed sensor (WSS) data from multiple wheel speed sensors each sensing rotation of one of multiple wheels of an automobile vehicle. A camera image is generated of a vehicle environment from at least one camera mounted in the automobile vehicle. An optical flow program is applied to discretize the camera image in pixels. Multiple distance intervals are overlayed onto the discretized camera image each representing a vehicle distance traveled defining a resolution of each of the multiple wheel speed sensors. A probability distribution function is created predicting a distance traveled for a next WSS output.

US Patent:

20180334152, Nov 22, 2018

Filed:

Oct 28, 2016

Appl. No.:

15/777138

Inventors:

- Stuttgart, DE
Daniel MAITLEN - South Lyon MI, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

B60T 8/32
B60T 8/17
B60T 8/176
B60T 8/171
B60T 8/172

Abstract:

A method and system for braking a trailer with a trailer braking system including receiving, at a controller, a brake request from a vehicle. The controller receives wheel speed signals from wheel speed sensors on the trailer. The controller determines a velocity of the trailer based on the wheel speed signals and determines a wheel speed based on one of the wheel speed signals. The controller compares the velocity of the trailer to the wheel speed to obtain a difference value. The controller determines that one of the wheels is unstable when the difference value exceeds a threshold. When unstable and when the brake request is received, the controller generates a braking signal to reduce the braking force on the one of the plurality of wheels.