METHODS, SYSTEMS, AND DEVICES FOR A MOTOR CONTROL SYSTEM

• US 20120133319A1
• Filed: 02/03/2012
• Published: 05/31/2012
• Est. Priority Date: 10/23/2008
• Status: Active Grant

• Current Assignee: Won-Door Corporation
• Original Assignee: Won-Door Corporation
• Inventors: Banta, Kevin D., Field, D. George, Goodman, E. Carl, Hall, Duane O.
• Granted Patent: US 8,368,340 B2
• Time in Patent Office: Days
• US Class Current: 318/652
• CPC Class Codes: G01D 5/24476 Signal processing G01D5/2448 - G01D5/24495 take precedence
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing

Abstract

Systems, devices, and methods for controlling a motor are disclosed. A method may include determining a rotational direction of a motor from a pair of quadrature signals sent to a microprocessor. The method further includes adjusting an internal count stored in the microprocessor at each edge of each of the pair of quadrature signals. The method further includes adjusting an external count stored in the microprocessor and transmitting an interrupt to a main controller after the first phase signal and the second phase signal have transitioned through each combinational logic state in one of a forward rotational direction and a reverse rotational direction. The method further includes transmitting a signal comprising the rotational direction of the motor and the external count from the microprocessor to a main controller.

Claims

1. A motor system, comprising:

a motor;

a motor control circuit operably coupled with the motor; and

a processor operably coupled with the motor control circuit, the processor comprising;

at least one monitoring input for receiving a first signal indicating at least one of a rotational direction of a motor and a position of the motor; and

at least one reporting output for transmitting a second signal indicating at least one of the rotational direction of the motor and the position of the motor, wherein the processor is configured to transmit the second signal to a main controller at a rate that is less frequent than a rate for adjustments of the first signal.

2. The motor system of claim 1, wherein the processor is configured to transmit the second signal to the main controller responsive to an interrupt event.

3. The motor system of claim 1, wherein the processor is configured to transmit the second signal at a conclusion of a predetermined cycle of the adjustments of the first signal.

4. The motor system of claim 1, wherein the predetermined cycle of the adjustments is determined by combination logic states of a pair of quadrature signals for the first signal.

5. The motor system of claim 1, wherein the processor further comprises:

at least one command input for receiving at least one system command from the main controller; and

at least one control output for transmitting at least one motor control signal to the motor control circuit responsive to the at least one system command.

6. The motor system of claim 5, wherein the at least one system command includes at least one of an “

open”

control signal, a “

close”

control signal, and a “

brake”

control signal for a movable partition driven by the motor.

7. The motor system of claim 5, wherein the at least one motor control signal comprises at least one pulse width modulation signal to adjust a rotational speed of the motor.

8. The motor system of claim 5, wherein the processor is further configured to temporarily operate the motor at a relatively slower rate before stopping the motor and upon startup of the motor relative to a steady state operation of the motor.

9. The motor system of claim 1, wherein the motor is operably coupled to the motor control circuit in an H-bridge configuration.

10. The motor system of claim 9, wherein the motor control circuit comprises transistors as switching elements of the H-bridge configuration.

11. The motor system of claim 1, wherein the motor is operably coupled with a movable partition and configured to drive the movable partition along a track of a movable partition system.

12. A method of controlling a motor, the method comprising:

monitoring adjustments in a signal indicating at least one of a rotational direction and a position of a motor;

reporting at least one of the rotational direction and the position of the motor to a main controller of a motor control system at a rate less frequent than a rate of the adjustments of the signal; and

controlling movement of the motor with a plurality of motor control signals in response to control signals received from the main controller.

13. The method of claim 12, wherein controlling movement of the motor with the plurality of motor control signals comprises transmitting a plurality of pulse width modulation signals to a motor control circuit controlling the motor.

14. The method of claim 13, wherein transmitting the plurality of pulse width modulation signals to the motor control circuit comprises adjusting a rotational speed of the motor during a start up mode and a stop mode of the motor.

15. The method of claim 12, wherein controlling movement of the motor with the plurality of motor control signals comprises transmitting a plurality of switching signals to a plurality of switching elements coupled with the motor in an H-bridge configuration.

16. The method of claim 12, wherein reporting the rotational direction and the position of the motor to the main controller of a motor control system at a rate less frequent than a rate of the adjustments of the signal includes adjusting an internal count from the adjustments of the signal more frequently than an external count signal that is transmitted to the main controller.

17. The method of claim 16, wherein reporting the rotational direction and the position of the motor to the main controller of a motor control system at a rate less frequent than a rate of the adjustments of the signal includes transmitting the external count signal to the main controller after a complete rotational cycle is completed for the internal count.

18. The method of claim 12, wherein reporting the rotational direction and the position of the motor to the main controller of a motor control system at a rate less frequent than a rate of the adjustments of the signal includes transmitting an external count signal in response to the main controller requesting a status of the motor from a processor.

19. A method of installing a motor control device, the method comprising:

positioning a motor, a motor control circuit, and a main controller to interface with a processor;

operably coupling a control output of the processor to the motor control circuit, the control output configured to transmit at least one motor control signal to the motor control circuit;

configuring a monitoring input of the processor to receive a first signal indicating at least one of a rotational direction of a motor and a position of the motor;

operably coupling a reporting output of the processor to the main controller,

configuring the processor to transmit a second signal through the reporting output to the main controller at a rate less frequent than a rate of adjustments of the first signal, the second signal indicating at least one of the rotational direction of the motor and the position of the motor.

20. The method of claim 19, wherein operably coupling the control output of the processor to the motor control circuit comprises coupling the processor to the motor control circuit in a configuration that enables the at least one motor control signal to drive the motor at a reduced rotational speed of the motor during at least one of a startup of the motor and a period of time before stopping the motor.

21. The method of claim 19, further comprising operably coupling a portion of a movable partition to the motor to enable the motor to displace the movable partition.

22. The method of claim 19, wherein configuring the monitoring input to receive the first signal comprises configuring the monitoring input to receive a pair of quadrature signals from an encoder operably coupled to the motor.

23. The method of claim 19, wherein configuring the processor to transmit a second signal to the main controller at a rate less frequent than a rate of adjustments of the first signal comprises configuring the processor to transmit the second signal responsive to completion of a combinational logic cycle of the pair of quadrature signals.

24. The method of claim 19, wherein configuring the processor to transmit a second signal to the main controller at a rate less frequent than a rate of adjustments of the first signal comprises configuring the processor to transmit the second signal responsive to receiving a status request signal from the main controller.

25. The method of claim 19, wherein configuring the processor to transmit a second signal to the main controller at a rate less frequent than a rate of adjustments of the first signal comprises configuring the processor to transmit the second signal responsive to an internal count of the processor reaching a predetermined status.