System and method for controlling a brake motor

• US 6,851,765 B1
• Filed: 08/28/2003
• Issued: 02/08/2005
• Est. Priority Date: 08/28/2003
• Status: Expired due to Term

• Current Assignee: BWI Company Limited SA (Shougang Corporation)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Disser, Robert J.
• Primary Examiner(s): WILLIAMS, THOMAS J
• Application Number:
  US10/650,642
• Publication Number:
  US 20050046275A1
• Time in Patent Office: 530 Days
• Field of Search: 188/158, 188/159, 188/160, 188/161, 188/162, 303/20, 303/199, 303/122.03, 303/122.04, 303/122.05, 310/68.C, 318/434, 318/632, 318/634
• US Class Current: 303/122.05
• CPC Class Codes: B60T 13/741 acting on an ultimate actuator

Abstract

The present invention includes a method for controlling brake motor. The method includes receiving brake motor information, determining a first brake motor voltage value and a brake motor current value based on the motor information when the brake motor is active, determining a brake motor resistance value based on the first brake motor voltage value and the brake motor current value, determining a brake motor temperature value based on the determined brake motor resistance value, and producing a brake motor control signal based on the determined brake motor temperature value. The method may additionally include determining a second brake motor voltage value when the brake motor is inactive, and producing a motor diagnostic voltage value based on the determined second brake motor voltage value.

Claims

1. A method for controlling a brake motor, the method comprising:

receiving brake motor information;

determining a first brake motor voltage value and a brake motor current value based on the motor information when the brake motor is active;

determining a brake motor resistance value based on the first brake motor voltage value and the brake motor current value;

determining a brake motor temperature value based on the determined brake motor resistance value;

producing a brake motor control signal based on the determined brake motor temperature value;

determining a second brake motor voltage value when the brake motor is inactive; and

producing a motor diagnostic voltage value based on the determined second brake motor voltage value.

2. A method for controlling a brake motor, the method comprising:

receiving brake motor information;

determining a first brake motor voltage value and a brake motor current value based on the motor information when the brake motor is active;

determining a brake motor resistance value based on the first brake motor voltage value and the brake motor current value;

determining a brake motor temperature value based on the determined brake motor resistance value; and

producing a brake motor control signal based on the determined brake motor temperature value;

wherein determining the first brake motor voltage value comprises;

determining a first and a second active phase brake motor voltage values of the brake motor; and

determining an absolute value of the difference of the first and the second active phase brake motor voltage values.

3. A computer readable medium storing a computer program comprising:

computer readable code for determining a first brake motor voltage value and a brake motor current value based on motor information when a brake motor is active;

computer readable code for determining a brake motor resistance value based on the first brake motor voltage value and the brake motor current value;

computer readable code for determining a brake motor temperature value based on the determined brake motor resistance value;

computer readable code for producing a brake motor control signal based on the determined brake motor temperature value;

computer readable code for determining a second brake motor voltage value when the brake motor is inactive; and

computer readable code for producing a motor diagnostic voltage value based on the determined second brake motor voltage value.

4. A computer readable medium storing a computer program comprising:

computer readable code for determining a first brake motor voltage value and a brake motor current value based on motor information when a brake motor is active;

computer readable code for determining a brake motor resistance value based on the first brake motor voltage value and the brake motor current value;

computer readable code for determining a brake motor temperature value based on the determined brake motor resistance value; and

computer readable code for producing a brake motor control signal based on the determined brake motor temperature value;

wherein the computer readable code for determining the first brake motor voltage value comprises;

computer readable code for determining a first and a second active phase brake motor voltage values of brake motor; and

computer readable code for determining an absolute value of the difference of the first and the second active phase brake motor voltage values.