CONTROL METHOD OF HYBRID VEHICLE

• US 20130134915A1
• Filed: 06/28/2012
• Published: 05/30/2013
• Est. Priority Date: 11/29/2011
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Inventors: Chung, Tae Young, Ihm, Hyung Bin, Yang, Byunghoon, Park, Jooyoung
• Granted Patent: US 9,114,724 B2
• Time in Patent Office: Days
• US Class Current: 318/400.14
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: H02P 21/50 Vector control arrangements or methods not otherwise provided for in H02P21/00- H02P21/36
• CPC Class Codes: H02P 29/02 Providing protection against overload without automatic interruption of supply protection against faults of stepper motors H02P8/36
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility

Abstract

A control method of a vehicle having a motor according to an exemplary embodiment of the present invention can include confirming that a speed of the motor is not 0 and an output torque thereof is 0 in a condition that the vehicle is being operated, confirming that a voltage of the motor converges to a regular value, and accumulating control data for the motor and processing the control data to calculate an offset value of a resolver. Accordingly, the control method of a vehicle effectively determines whether the offset of the resolver is to be compensated without affecting the drivability of the vehicle.

Claims

1. A control method of a vehicle having a motor, comprising:

confirming that a speed of the motor is not 0 and an output torque thereof is 0 in a condition that the vehicle is being operated;

confirming that a voltage of the motor converges to a regular value; and

accumulating control data for the motor and processing the control data to calculate an offset value of a resolver.

2. The control method of claim 1, wherein the offset mode is performed in a condition that the speed of the vehicle is not 0.

3. The control method of claim 1, wherein a point that an output torque of the motor is 0 is extended to is within a predetermined speed range of the motor.

4. The control method of claim 3, wherein the predetermined speed range is between about 1,000 RPM and about 2,000 RPM.

5. The control method of claim 1, wherein while the current of the motor converges to the predetermined value, an axis D voltage of the motor converges to a predetermined range.

6. The control method of claim 5, wherein the predetermined range is between about −

1.2 V and about +1.2 V.

7. The control method of claim 1, wherein while the current of the motor converges to the predetermined value, an axis Q voltage of the motor converges to a predetermined range.

8. The control method of claim 1, wherein while the current of the motor converges to the predetermined value, an axis D voltage and an axis Q voltage of the motor converges to a predetermined range

9. The control method of claim 1, wherein, when it is confirmed that the torque of the motor is 0, the motor is controlled in a 0-current condition.

10. The control method of claim 1, wherein, when it is confirmed that the torque of the motor is 0, an axis D or an axis Q current of the motor is controlled to be 0.

11. The control method of claim 1, wherein the offset value is calculated in accordance with equations v_d=−

ω

ψ

_F sin(α

−

α

*) and v_q=ω

ψ

_F cos(α

−

α

*), wherein v_d denotes an axis D voltage, v_q denotes an axis Q voltage, ω

denotes a rotator angle speed, ψ

_F denotes a size of flux, α

denotes a final offset value, and α

* denotes an offset candidate value.

12. A non-transitory computer-readable medium containing program instructions executed by a processor or controller to implement a control method of a vehicle having a motor, the computer-readable medium comprising:

program instructions that confirm that a speed of the motor is not 0 and an output torque thereof is 0 in a condition that the vehicle is being operated;

program instructions that confirm that a voltage of the motor converges to a regular value; and

program instructions that accumulate control data for the motor and processing the data to calculate an offset value of a resolver.