Edward D Tate

US Patent:

20030076109, Apr 24, 2003

Filed:

Jul 22, 2002

Appl. No.:

10/200604

Inventors:

Mark Verbrugge - Troy MI, US
Edward Tate - Grand Blanc MI, US
Damon Frisch - Troy MI, US
Ramona Ying - Rochester Hills MI, US
Brian Koch - Berkley MI, US
Shawn Sarbacker - Royal Oak MI, US

International Classification:

G01N027/416
H02J007/00

US Classification:

324/427000, 320/134000

Abstract:

A method for determining state of charge (SOC) of a battery system based upon an equivalent circuit of the battery system. A potential and resistance of the equivalent circuit are computed. The method uses a least squares regression means, and includes: providing a plurality of data points as a starting point based upon determinations including measurement or prior computation, wherein the determinations include a determination of a voltage of the battery system; weighting the plurality of data points; and computing values of the resistance and potential based upon weighted data points using recursive formulas, wherein only a state at a previous time is reflected respectively.

US Patent:

20040162683, Aug 19, 2004

Filed:

Feb 18, 2003

Appl. No.:

10/368869

Inventors:

Mark Verbrugge - Troy MI, US
Edward Tate - Grand Blanc MI, US
Damon Frisch - Troy MI, US
Brian Koch - Berkley MI, US

International Classification:

G06F019/00

US Classification:

702/064000

Abstract:

A method for determining a voltage based or current based state of charge (SOC) and state of health (SOH) of a battery system is provided. The method includes: providing a model of the battery system including an equivalent circuit having both low frequency and high frequency elements; establishing a plurality of functional relationships comprising relationship of the equivalent circuit with SOC; reducing at least part of the plurality of functional relationships into a set of time segmented recursive functional relationships, wherein a state at a first time t can be modeled by a functional presentation of a state at a second time t-t that occurred before the first time t; and computing a set of data points based upon the set of time segmented recursive functional relationships using a matrix for operation in matrix algebra.

US Patent:

20040260491, Dec 23, 2004

Filed:

Jun 17, 2003

Appl. No.:

10/463110

Inventors:

Edward Tate - Grand Blanc MI, US

International Classification:

G06F019/00

US Classification:

702/064000

Abstract:

A method for estimating an electrical measurement, such as a current or a voltage, comprises generating an analog electrical measurement signal using a sensor. An analog filter filters the analog electrical measurement signal. An A/D converter samples the analog signal and generates a digital electrical measurement signal. A matrix is formed based on the characteristics of the analog filter. An estimated actual current or voltage is calculated based on a relationship between the digital signal and the matrix.

US Patent:

20050046388, Mar 3, 2005

Filed:

Aug 28, 2003

Appl. No.:

10/650933

Inventors:

Edward Tate - Grand Blanc MI, US
Mark Verbrugge - Troy MI, US

International Classification:

H02J007/00

US Classification:

320132000

Abstract:

A state of charge estimator for a battery includes a meter that generates a terminal voltage signal of the battery and a terminal current signal of the battery. A controller employs a linearized model of the battery and a time-varying state estimator. The controller process a synthesized input based on the terminal current and the terminal voltage to estimate the battery state of charge.

US Patent:

20050057255, Mar 17, 2005

Filed:

Sep 17, 2003

Appl. No.:

10/664287

Inventors:

Edward Tate - Grand Blanc MI, US
Mark Verbrugge - Troy MI, US
Brian Koch - Berkley MI, US
Damon Frisch - Troy MI, US

International Classification:

G01N027/416

US Classification:

324426000

Abstract:

A method of estimating a state of charge (SOC) and a state of health (SOH) of an electrochemical cell (EC) includes modeling the EC with a linear equation, measuring a terminal current of the EC, measuring a terminal voltage of the EC and measuring a temperature of the EC. The linear equation is processed through a time-varying state and parameter estimator based on the terminal current, the terminal voltage and the temperature to determine states and parameters of the EC.

US Patent:

20060155541, Jul 13, 2006

Filed:

Jan 7, 2005

Appl. No.:

11/031363

Inventors:

Edward Tate - Grand Blanc MI, US

International Classification:

G10L 15/14

US Classification:

704256300

Abstract:

A method of modeling a cycle of a vehicle parameter includes generating a plurality of training sets and partially classifying elements of each training set based on a present value of the vehicle parameter and a subsequent change in the vehicle parameter. The method further includes reducing the plurality of training sets to a corresponding plurality of parameter sets based on the elements and defining a plurality of statistical groups of the parameter sets based on a value and a history of that value.

US Patent:

20070136040, Jun 14, 2007

Filed:

Dec 14, 2005

Appl. No.:

11/302675

Inventors:

Edward Tate - Grand Blanc MI, US

International Classification:

G06G 7/48

US Classification:

703008000, 434365000

Abstract:

The present invention relates to a method of determining the probability that a statistical model describes the driving style or usage of a vehicle observed. By identifying an appropriate statistical model, the driving style can be detected and vehicle operation can be optimized. The method may be applied to both hybrid and non-hybrid vehicles. The method may also be augmented to determine the most probable statistical model of the usage of the vehicle. This allows detection of driving styles that can be classified as urban, highway, aggressive, etc. For example, the augmented method can be used to distinguish between highway and urban driving with a very high certainty.

US Patent:

20070159137, Jul 12, 2007

Filed:

Jan 31, 2007

Appl. No.:

11/669196

Inventors:

Mark Verbrugge - Troy MI, US
Edward Tate - Grand Blanc MI, US
Damon Frisch - Troy MI, US
Brian Koch - Berkley MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - DETROIT MI

International Classification:

H02J 7/00

US Classification:

320132000

Abstract:

A method for determining a voltage based or current based state of charge (SOC) and state of health (SOH) of a battery system is provided. The method includes: providing a model of the battery system including an equivalent circuit having both low frequency and high frequency elements; establishing a plurality of functional relationships comprising relationship of the equivalent circuit with SOC; reducing at least part of the plurality of functional relationships into a set of time segmented recursive functional relationships, wherein a state at a first time t can be modeled by a functional presentation of a state at a second time t−Δt that occurred before the first time t; and computing a set of data points based upon the set of time segmented recursive functional relationships using a matrix for operation in matrix algebra.