Multiplexed motor controller

• US 9,124,198 B2
• Filed: 04/08/2013
• Issued: 09/01/2015
• Est. Priority Date: 04/08/2013
• Status: Active Grant

• Current Assignee: Hamilton Sundstrand Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Hamilton Sundstrand Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Krenz, Michael J., Thomson, Scott M.
• Primary Examiner(s): GLASS, ERICK DAVID
• Application Number:
  US13/858,472
• Publication Number:
  US 20140300297A1
• Time in Patent Office: 876 Days
• Field of Search: 318/67
• US Class Current: 1/1
• CPC Class Codes: H02P 5/74 controlling two or more ac dynamo-electric motors H02P5/46, H02P5/60 take precedence
• CPC Class Codes: H02P 6/04 Arrangements for controlling or regulating the speed or torque of more than one motor H02P6/10 takes precedence

Abstract

A system, multiplexed controller, and a method of controlling a plurality of motors is described. The system includes a plurality of motors, at least two of the motors requiring a variable-frequency source or being a multi-speed motor. The multiplexed controller of the system is configured to control operation of the plurality of motors, the controller directly communicating with each of the plurality of motors.

Claims

1. A system comprising:

a plurality of motors, at least two of the motors requiring a variable-frequency source or being a multi-speed motor; and

a multiplexed controller configured to control operation of the plurality of motors, the controller directly communicating with each of the plurality of motors, wherein the multiplexed controller performs concurrent processing to control of the operation of two or more of the plurality of motors such that, when two or more signals to start the operation of the two or more of the plurality of motors are received by the controller concurrently, the controller processes the two or more signals according to an order based on a priority associated with each of the plurality of motors to control the operation.

2. The system according to claim 1, further comprising one or more initiators, each initiator configured to send the controller the signal to start operation of one or more of the plurality of motors.

3. The system according to claim 2, wherein the multiplexed controller communicates directly with each initiator.

4. The system according to claim 1, wherein the multiplexed controller generates a waveform to control the operation of each of the plurality of motors.

5. The system according to claim 1, wherein the multiplexed controller performs closed loop control on a motor of the plurality of motors.

6. The system according to claim 1, wherein the plurality of motors is located within a mobile platform.

7. The system according to claim 6, wherein the plurality of motors is located within an aircraft.

8. The system according to claim 1, further comprising a plurality of the multiplexed controllers, a number of the plurality of the multiplexed controllers being less than a number of the plurality of motors, the plurality of the multiplexed controllers performing parallel processing to control the operation of two or more of the plurality of motors simultaneously.

9. The system according to claim 1, wherein the multiplexed controller stores a configuration file comprising a type of each of the plurality of motors and the priority associated with each of the plurality of motors.

10. A method of controlling a plurality of motors, the method comprising:

receiving, at a processor of a multiplexed controller, one or more signals to initiate operation of respective one or more motors directly from corresponding one or more initiators;

prioritizing, based on priority information stored in a memory device, the signals when two or more signals are received; and

processing the signals, with the processor, based on a result of the prioritizing to generate waveforms to drive the respective motors.

11. The method according to claim 10, wherein the prioritizing is based on the priority information stored in a configuration file in the memory device, the configuration file also storing a type of the plurality of motors.

12. The method according to claim 10, further comprising performing closed loop control on at least one of the respective motors, with the processor, based on the result of the prioritizing.

13. A multiplexed controller comprising:

an input interface to receive one or more signals directly from corresponding one or more initiators;

a processor configured to process the one or more signals to output waveforms to respective one or more motors whose operation is controlled by the waveforms; and

a memory device storing priority information including a relative priority of the one or more signals, wherein the processor processes the one or more signals according to the priority information.

14. The controller according to claim 13, wherein the memory device stores a configuration file to store a type of each of the plurality of motors and the priority information.

15. The controller according to claim 13, further comprising a power switching device and a filter to generate the waveforms.