IP Library Granted Patent US 7,030,580
Granted Patent B2
US 7,030,580 · App. 10/740,520 · Granted Apr 18, 2006

Motor/generator transient response system

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Quick Facts
Patent No.
US 7,030,580
App. No.
10/740,520
Granted
Apr 18, 2006
Kind
B2
Abstract

A transient response system includes a power source operable to generate a power output and a transmission operatively coupled to the power source. The transient response system also includes a generator operatively coupled to the power source and a controller in communication with the generator and at least one of the power source and the transmission. The controller is operable to receive at least one input having a value indicative of a change in load on the power source and operable to cause the generator to remove power from the power output at a rate corresponding to the value of the at least one input.

Claims (47)

1. A transient response system, comprising:

a power source operable to generate a power output;

a transmission operatively coupled to the power source;

a generator operatively coupled to the power source; and

a controller in communication with the generator and at least one of the power source and the transmission, the controller operable to receive at least one input having a value indicative of a change in load on the power source and operable to cause the generator to remove power from the power output at a rate corresponding to the value of the at least one input and in such a manner to dampen transient power loads applied to the power source by removing less power from the power output in response to an increase in load on the power source;

wherein the at least one input includes a signal corresponding to a fluid pressure of the transmission.

2. A transient response system, comprising:

a power source operable to generate a power output;

a transmission operatively coupled to the power source;

a generator operatively coupled to the power source; and

a controller in communication with the generator and at least one of the power source and the transmission, the controller operable to receive at least one input having a value indicative of a change in load on the power source and operable to cause the generator to remove power from the power output at a rate corresponding to the value of the at least one input and in such a manner to dampen transient power loads applied to the power source by removing less power from the power output in response to an increase in load on the power source;

wherein the at least one input includes a motor command signal of the transmission.

3. A transient response system, comprising:

a power source operable to generate a power output;

a transmission operatively coupled to the power source;

a generator operatively coupled to the power source;

a controller in communication with the generator and at least one of the power source and the transmission, the controller operable to receive at least one input having a value indicative of a change in load on the power source and operable to cause the generator to remove power from the power output at a rate corresponding to the value of the at least one input and in such a manner to dampen transient power loads applied to the power source by removing less power from the power output in response to an increase in load on the power source;

a motor operatively coupled to the power source, wherein the controller is in communication with the motor and operable to cause the motor to add power to the power output at a rate corresponding to the value of the at least one input; and

a second power source configured to power the motor when the motor drives the power source.

4. A method of operating a transient response system comprising:

driving a transmission with a power source, the power source operable to produce a power output;

sensing a load on the power source;

identifying a change in the load on the power source; and

controlling a generator to remove power from the power output at a rate corresponding to a value associated with the change in load on the power source and in such a manner to dampen transient power loads applied to the power source by removing less power from the power output in response to an increase in load on the power source;

wherein the value associated with the change in load on the power source includes a value of a signal corresponding to a fluid pressure of the transmission.

5. A method of operating a transient response system comprising:

driving a transmission with a power source, the power source operable to produce a power output;

sensing a load on the power source;

identifying a change in the load on the power source; and

controlling a generator to remove power from the power output at a rate corresponding to a value associated with the change in load on the power source and in such a manner to dampen transient power loads applied to the power source by removing less power from the power output in response to an increase in load on the power source;

wherein the value associated with the change in load on the power source includes a value of a motor command signal of the transmission.

6. A work machine comprising:

a housing;

a traction device supporting the housing;

a power source operable to generate a power output;

a transmission operatively coupled to the power source;

a generator operatively coupled to the power source;

a controller in communication with the generator and at least one of the power source and the transmission, the controller operable to receive at least one input having a value indicative of a load on the power source and operable to cause the generator to remove power from the power output at a rate corresponding to the value of the at least one input and in such a manner to dampen transient power loads applied to the power source by removing less power from the power output in response to an increase in load on the power source; and

wherein the at least one input includes a signal corresponding to a fluid pressure of the transmission.

7. A work machine comprising:

a housing;

a traction device supporting the housing;

a power source operable to generate a power output;

a transmission operatively coupled to the power source;

a generator operatively coupled to the power source;

a controller in communication with the generator and at least one of the power source and the transmission, the controller operable to receive at least one input having a value indicative of a load on the power source and operable to cause the generator to remove power from the power output at a rate corresponding to the value of the at least one input and in such a manner to dampen transient power loads applied to the power source by removing less power from the power output in response to an increase in load on the power source; and

wherein the at least one input includes a motor command signal of the transmission.

Assignments (2)
CONFIRMATORY LICENSE Recorded Nov 6, 2008
From: CATERPILLAR INC.
To: ENERGY, UNITED STATES DEPARTMENT OF
Reel/Frame 021794/0412 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 22, 2003
From: HOFF, BRIAN D.
To: CATERPILLAR, INC.
Reel/Frame 014821/0945 →