REDUNDANT HAZARD MITIGATION METHODS FOR AN ETRS CONTROLS ARCHITECTURE

• US 20180292005A1
• Filed: 04/06/2017
• Published: 10/11/2018
• Est. Priority Date: 04/06/2017
• Status: Abandoned Application

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Neelakantan, Vijay A., Gopalakrishnan, Suresh, Benson, Christopher G.
• Application Number:
  US15/480,426
• Publication Number:
  US 20180292005A1
• Time in Patent Office: Days
• CPC Class Codes: F16H 2061/1268 Electric parts of the controller, e.g. a defect solenoid, wiring or microprocessor
• CPC Class Codes: F16H 2061/326 Actuators for range selection, i.e. actuators for controlling the range selector or the manual range valve in the transmission
• CPC Class Codes: F16H 61/12 Detecting malfunction or potential malfunction, e.g. fail safe in control of hydrostatic gearing F16H61/4192; Circumventing or fixing failures
• CPC Class Codes: F16H 61/32 Electric motors actuators or related electrical control means therefor
• CPC Class Codes: G05D 3/00 Control of position or direction G05D1/00 takes precedence; numerical control to execute positioning G05B19/18

Abstract

A method for retracting an extended pin of a sliding camshaft actuator wherein the actuator includes a magnetic field generating coil, a magnetic piston in connection with the extended pin operable to be actuated by the magnetic field generating coil, and a pin stop plate. The method comprises creating an air gap between the magnetic piston and the pin stop plate and reversing voltage on the magnetic field generating coil to retract the extended pin.

Claims

1. A redundant hazard mitigation method for an ETRS controls architecture comprising:

enabling an ETRS actuator module to perform a shift position command;

sending a shift position command to the ETRS actuator module; and

disabling the ETRS actuator module after the command to shift position is executed.

2. The method of claim 1 wherein enabling further comprises sending an enable signal from a master controller to the ETRS actuator module in response to a driver command to shift.

3. The method of claim 2 wherein the ETRS actuator module comprises an actuator motor controller in communication with an actuator motor.

4. The method of claim 3 wherein the actuator motor controller and the actuator motor are in communication with a power supply relay.

5. The method of claim 4 wherein enabling further comprises controlling the activation of the power supply relay with the master controller to provide electric power to the ETRS actuator module.

6. The method of claim 3 wherein an H-bridge circuit is in communication between the actuator motor controller and the actuator motor to regulate electric power to the actuator motor.

7. The method of claim 3 wherein an H-bridge circuit is in communication between the master controller and the actuator motor to regulate electric power to the actuator motor.

8. The method of claim 6 wherein enabling further comprises sending an enable signal from the actuator motor controller to the H-bridge in response to a driver input to shift.

9. The method of claim 7 wherein enabling further comprises sending an enable signal from the master controller to the H-bridge in response to a driver command to shift

10. A redundant hazard mitigation method for an ETRS Controls Architecture comprising:

enabling an ETRS actuator module to perform a shift position command by sending an enable signal from a master controller to the ETRS actuator module in response to a driver input to shift;

sending a shift position command to the ETRS actuator module; and

disabling the ETRS actuator module after the command to shift position is executed.

11. The method of claim 10 wherein the ETRS actuator module comprises an actuator motor controller in communication with an actuator motor.

12. The method of claim 11 wherein the actuator motor controller and the actuator motor are in communication with a power supply relay.

13. The method of claim 12 wherein enabling further comprises controlling the activation of the power supply relay with the master controller to provide electric power to the ETRS actuator module.

14. The method of claim 10 wherein an H-bridge circuit is in communication between the actuator motor controller and the actuator motor to regulate electric power to the actuator motor.

15. The method of claim 14 wherein enabling further comprises sending an enable signal from the master controller to the H-bridge in response to a driver command to shift.

16. A redundant hazard mitigation method for an ETRS Controls Architecture comprising:

enabling an ETRS actuator module to perform a shift position command by sending an enable signal from a master controller to the ETRS actuator module in response to a driver input to shift;

controlling the activation of a power supply relay with the master controller to provide power to the ETRS actuator module;

sending a shift position command to the ETRS actuator module after the relay is activated; and

disabling the ETRS actuator module after the command to shift position is executed.

17. The method of claim 16 wherein the ETRS actuator module comprises an actuator motor controller in communication with an actuator motor.

18. The method of claim 17 wherein the actuator motor controller is in communication with the power supply relay.

19. The method of claim 17 wherein an H-bridge circuit is in communication between the actuator motor controller and the actuator motor to regulate electric power to the actuator motor.

20. The method of claim 19 wherein enabling further comprises sending an enable signal from the master controller to the H-bridge in response to a driver command to shift.