Adaptive climate control system

• US 5,511,724 A
• Filed: 11/23/1994
• Issued: 04/30/1996
• Est. Priority Date: 11/23/1994
• Status: Expired due to Fees

• Current Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Original Assignee: Delco Electronics Corporation (Motors Liquidation Co. GUC Trust)
• Inventors: Thayer, Peter A., Freiberger, Ronald D., Wills, Diane M.
• Primary Examiner(s): Tanner, Harry B.
• Application Number:
  US08/344,189
• Time in Patent Office: 524 Days
• Field of Search: 236/49.3, 236/49.1, 236/91 R, 236/91 C, 236/91 F, 236/91 E, 236/94, 236/78 D, 165/12, 165/16, 165/42, 165/43, 165/35, 165/36, 62/239, 62/244, 62/161, 62/162, 62/163, 62/164, 62/180, 62/186, 62/173, 454/75, 454/229, 454/256, 454/258
• US Class Current: 236/49.3
• CPC Class Codes: B60H 1/0073 Control systems or circuits characterised by particular algorithms or computational models, e.g. fuzzy logic or dynamic models
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/52 Indication arrangements, e.g. displays
• CPC Class Codes: F24F 11/62 characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
• CPC Class Codes: F24F 11/77 by controlling the speed of ventilators
• CPC Class Codes: G05D 23/1917 using digital means
• CPC Class Codes: Y02B 30/70 Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

An adaptive electronic climate control (ECC) system for a vehicle that allows adjustments to the temperature setting and blower speed controls of the ECC system to teach the system to automatically be set to the vehicle operator'"'"'s comfort level. If the vehicle operator adjusts the temperature set point at a particular ambient air temperature, the system will store this change for that ambient air temperature. Once the change has been validated, the next time the system encounters that ambient air temperature, the system will automatically provide the appropriate air mixture as previously set by the vehicle operator. Further, when the vehicle operator adjusts the blower speed, the system will gradually adapt the blower speed to that which is set by the vehicle operator for a particular set of vehicle parameters that affect the climate within the vehicle.

Claims

1. A method of adapting an electronic climate control system associated with a vehicle to the preferences of an operator of the vehicle, said method comprising the steps of:

calibrating the electronic climate control system to provide a predetermined air mixture delivery and blower speed for each program number of a range of program numbers, said program numbers being determined by a combination of vehicle parameters that effect the climate within the vehicle, said parameters including a temperature set point controlled by the vehicle operator;

recalibrating the air mixture delivery for a particular program number that is based on current vehicle parameters when the vehicle operator adjusts the temperature set point; and

recalibrating the blower speed for a particular program number that is based on current vehicle parameters when the vehicle operator adjusts a blower speed control that controls the blower speed.

2. The method according to claim 1 wherein the step of recalibrating the air mixture delivery includes the steps of storing the temperature set point and a value indicative of the ambient air temperature around the vehicle when the vehicle operator adjusts the temperature set point, activating a temperature set point adaptive timer, and modifying an ambient air corrections table when the adaptive timer has expired, said ambient air corrections table being a table including a series of data points where each data point represents a range of ambient air temperatures, wherein the ambient air temperature is a vehicle parameter.

3. The method according to claim 2 further comprising the step of modifying a vehicle constant when the ambient air corrections table is modified, said vehicle constant being a constant vehicle parameter used to determine the program number.

4. The method according to claim 2 wherein the step of recalibrating the air mixture delivery includes the steps of periodically determining if the vehicle has been turned off, determining whether the adaptive timer has expired when it has been determined that the vehicle is off, activating a stopped timer if the adaptive timer has expired, and determining whether the stopped timer has expired after the stopped timer has been activated, wherein the step of modifying the ambient air corrections table includes modifying the ambient air corrections table after the stopped timer has expired.

5. The method according to claim 2 wherein the step of recalibrating the air mixture delivery includes the steps of determining whether the vehicle has been turned off, determining whether the adaptive timer has expired when it has been determined that the vehicle is off, storing a current value of the adaptive timer if the adaptive timer has not expired, and setting a stopped timer after the step of storing the current value of the adaptive timer.

6. The method according to claim 5 wherein the step of recalibrating the air mixture delivery includes the steps of determining if the vehicle is turned on, determining if the stopped timer has expired after it has been determined that the vehicle is on, resuming the adaptive timer if the stopped timer has not expired and clearing the stopped timer.

7. The method according to claim 1 wherein the step of recalibrating the air mixture delivery includes determining whether a climate control mode is in an extreme climate mode after it has been determined that the temperature setting point has been changed.

8. The method according to claim 1 wherein the step of recalibrating the blower speed includes the steps of determining if the vehicle operator has changed the blower speed from an original blower speed to a new blower speed, generating a blower delta as the difference between the output of a vehicle blower at the new blower speed and the output of the vehicle blower at the original blower speed for the particular program number and adding a percentage of the blower delta to a blower value associated with a blower look-up table for the particular program number, said blower table including blower values that give a blower speed for each program number.

9. The method according to claim 8 wherein the step of recalibrating the blower speed includes the steps of setting a blower adaptive timer when the blower delta is generated and adding the percentage of the blower delta to the blower table after the blower adaptive timer has expired.

10. The method according to claim 9 wherein the step of recalibrating the blower speed includes the steps of reducing the blower delta the percentage of the blower delta that was added to the blower table, reducing the blower speed the percentage of the blower delta that was added to the blower table, resetting the blower adaptive timer, adding the percentage of the reduced blower delta to the blower table after the blower adaptive timer has expired, and reducing the reduced blower delta and the blower speed the percentage of the blower delta when the percentage of the blower delta is added to the blower table.

11. The method according to claim 10 wherein the step of recalibrating the blower speed includes the step of limiting the number of times the percentage of the blower delta is added to the blower table.

12. The method according to claim 8 wherein the step of recalibrating the blower speed includes the steps of determining if the vehicle has been turned off for a predetermined period of time and setting the blower delta to zero if the vehicle has been turned off for the predetermined period of time.

13. The method according to claim 8 wherein the step of adding a percentage of the blower delta to the blower table for the particular program number includes adding a portion of the percentage of the blower delta to surrounding blower table values within taper fields around the program number.

14. The method according to claim 1 wherein the step of recalibrating the blower speed includes the step of preventing the blower speed from being reduced below an absolute minimum with respect to an air delivery mode.

15. A method of adapting an electronic climate control system associated with a vehicle to the preferences of an operator of the vehicle, said method comprising the steps of:

calibrating the electronic climate control system to provide a predetermined air mixture for each program number of a range of program numbers, said program number being determined by a combination of vehicle parameters that effect the climate within the vehicle, said parameters including a temperature set point controlled by the vehicle operator;

adjusting the temperature set point from an original temperature set point to a first new temperature set point, said original temperature set point having an original program number and said first new temperature set point generating a new program number;

adapting the new program number to a first adapted program number, wherein the difference between the original program number and the first adapted program number is greater than the difference between the original program number and the new program number;

readjusting the temperature set point to a second new temperature set point, wherein the second new temperature set point substantially generates the new program number; and

adapting the first adapted program number to a second adapted program number, wherein the difference between the original program number and the first adapted program number is greater than the difference between the original program number and the second adapted program number.

16. The method according to claim 15 further comprising the steps of continuing to adjust the temperature set point and adapt the program number until the temperature set point is substantially equal to the original temperature set point and the program number is substantially equal to the new program number.

17. The method according to claim 16 wherein the original temperature set point is approximately 75.

18. The method according to claim 15 wherein the steps of adapting the new program number and adapting the first adapted program number includes modifying an ambient air corrections table, said ambient air corrections table being a table including a series of data points where each data point is representative of a range of ambient air temperatures, wherein the ambient air temperature is a vehicle parameter.

19. The method according to claim 15 wherein the steps of adapting the new program number and adapting the first adapted program number include modifying a vehicle constant, said vehicle constant being a constant vehicle parameter used to determine the program number.

20. A method of adapting an electronic climate control system associated with a vehicle to the preferences of an operator of the vehicle, said method comprising the steps of:

calibrating the electronic climate control system to provide a predetermined blower speed for each program number of a range of program numbers, said program numbers being determined by a combination of vehicle parameters that effect the climate within the vehicle;

adjusting the speed of a blower that controls air delivery to a passenger compartment of the vehicle from an original blower speed to a new blower speed;

generating a blower delta as a difference between the output of the blower at the new blower speed and the output of the blower at the original blower speed for a particular program number;

setting an adaptive timer when the blower delta is generated; and

adding a percentage of the blower delta to a blower value associated with a blower look-up table for the particular program number, said blower table including blower table values that give a blower speed for each program number.

21. The method according to claim 20 further comprising the steps of reducing the blower delta the percentage of the blower delta that was added to the blower table, reducing the blower speed, resetting the blower adaptive timer, adding the reduced percentage of the blower delta to the blower table after the blower adaptive timer has expired, and reducing the reduced blower delta and the blower speed the percentage of the blower delta when the percentage of the blower delta is added to the blower table.

22. The method according to claim 21 further comprising the step of determining if the vehicle has been turned off for a predetermined period of time and setting the blower delta to zero if the vehicle has been turned off for the predetermined period of time.

23. The method according to claim 22 wherein the step of adding a percentage of the blower delta to the blower table for the particular program number includes adding a percentage of the blower delta to surrounding blower table values within taper fields around the program number.

24. The method according to claim 20 wherein the step of adding a percentage of the blower delta to the blower table includes the step of preventing the blower delta from reducing the blower speed to a predetermined absolute minimum blower speed.