Powered panel moving system

• US 20080030156A1
• Filed: 10/01/2007
• Published: 02/07/2008
• Est. Priority Date: 03/11/2005
• Status: Active Grant

• Current Assignee: Uusi LLC (Nartron Corporation)
• Original Assignee: NPC Incorporated
• Inventors: Cooper, Stephen, Newman, Todd, Washeleski, John, Strom, Peter
• Granted Patent: US 7,449,852 B2
• Time in Patent Office: Days
• US Class Current: 318/400.13
• CPC Class Codes: E05F 15/41 Detection by monitoring transmitted force or torque E05F15/48 takes precedence; Safety couplings with activation dependent upon torque or force, e.g. slip couplings
• CPC Class Codes: E05F 15/697 Motor units therefor, e.g. geared motors
• CPC Class Codes: E05Y 2400/554 sensing motor load
• CPC Class Codes: E05Y 2900/55 Windows
• CPC Class Codes: G05B 2219/37317 Derive position from current, voltage, back electromotive force bemf
• CPC Class Codes: G05B 2219/45242 Door, panel, window operation, opening, closing
• CPC Class Codes: H02H 1/0007 concerning the detecting means in general G01R or other subclasses of G01; reed switches H01H71/2445
• CPC Class Codes: H02H 3/05 with means for increasing reliability, e.g. redundancy arrangements for logic circuits H03K19/003
• CPC Class Codes: H02H 7/0851 for motors actuating a movable member between two end positions, e.g. detecting an end position or obstruction by overload signal

Abstract

A powered panel moving system includes a motor, electronic drive circuitry, mechanics, a coupler, and electronic anti-entrapment circuitry. The drive circuitry drives a rotor of the motor such that the rotor has a rotational output in response to being driven. The mechanics moves a panel upon being driven. The coupler couples the rotational output of the rotor to the mechanics in order drive the mechanics for the mechanics to move the panel. The anti-entrapment circuitry controls the drive circuitry to prevent the panel from entrapping an object. The drive circuitry drives the motor based on measurements indicative of at least one of motor current, motor speed, and panel position. The drive circuitry and the anti-entrapment circuitry are integrated with one another such that the anti-entrapment circuitry controls the drive circuitry based on the same measurements.

Claims

1. A powered panel moving system for moving a panel, the system comprising:

a motor having a rotor;

electronic drive means for driving the motor in order to rotate the rotor, wherein the rotor has a rotational output in response to being driven;

mechanical means for moving a panel upon being driven;

coupling means for coupling the rotational output of the rotor to the mechanical means in order drive the mechanical means for the mechanical means to move the panel; and

electronic anti-entrapment means for controlling the drive means to prevent the panel from entrapping an object;

wherein the drive means drives the motor based on measurement signals indicative of at least one of motor current, motor speed, and panel position, wherein the drive means and the anti-entrapment means are integrated with one another such that the anti-entrapment means controls the drive means based on the same measurement signals.

2. The system of claim 1 wherein:

the drive means includes motor current sensing means operable to infer a position of the rotor based on current of the motor.

3. The system of claim 1 wherein:

the motor includes at least one motor phase coil;

wherein the drive means includes back emf sensing means on the least one motor phase coil, wherein the back emf sensing means is operable to infer a position of the rotor based on back emf of the motor.

4. The system of claim 1 wherein:

the motor includes at least one motor phase coil;

wherein the drive means includes impedance sensing means on the at least one motor phase coil, wherein the impedance sensing means is operable to infer a position of the rotor based on impedance of the motor.

5. The system of claim 1 wherein:

the motor is a DC brush-less motor;

wherein the drive means includes motor position sensing and indicating means.

6. The system of claim 5 wherein:

the DC brush-less motor is a stepper motor;

wherein the motor position sensing and indicating means counts motor pulses to determine the position of the rotor.

7. The system of claim 1 wherein:

the coupling means includes rotational mechanical advantage means for matching speed and torque output of the rotor to a lower speed, higher torque output for the mechanical means to move the panel, wherein the rotational mechanical advantage means includes at least one gear meshed in a gear train.

8. The system of claim 1 wherein:

the motor is mounted so as to move with the panel and the mechanical means is mounted to a system in which the panel moves.

9. The system of claim 1 wherein:

the mechanical means includes a flexible member to transmit torque or force for driving the panel.

10. The system of claim 1 wherein:

the mechanical means includes at least one of rack and pinion gearing, arm and sector gearing, planetary gearing, a worm gear, a toothed track or a slotted track for engagement with a gear, a pneumatic piston, a hydraulic piston, and a gearbox transmission.

11. The system of claim 1 wherein:

the mechanical means includes a clutching mechanism to enable engagement and disengagement of the motor to at least one of the coupling means and the mechanical means, the mechanical means further includes a braking mechanism to lock the movement of the panel to a desired position upon the panel being in the desired position.

12. The system of claim 1 wherein:

the moving of the panel is about a hinged joint.

13. The system of claim 1 wherein:

the moving of the panel is at least one of a linear translation and a rotational translation in a plane of the panel.

14. The system of claim 2 wherein:

the anti-entrapment means includes analysis means operable with the motor current sensing means to determine presence of an obstruction to the motion of the panel based on the current of the motor prior to the panel applying destructive forces against the obstruction.

15. The system of claim 2 wherein:

the anti-entrapment means includes analysis means operable for determining the presence of an obstruction to the motion of the panel based on at least one of the rotor position and the motor current.

16. The system of claim 3 wherein:

the anti-entrapment means includes analysis means operable for determining the presence of an obstruction to the motion of the panel based on at least one of the rotor position and the back emf of the motor.

17. The system of claim 2 wherein:

the anti-entrapment means is operable with the motor current sensing means to generate an indication of end-of-travel of the panel based on at least one of the rotor position and the motor current.

18. The system of claim 3 wherein:

the anti-entrapment means is operable with the back emf sensing means to generate an indication of end-of-travel of the panel based on at least one of the rotor position motor and the back emf of the motor.

19. The system of claim 2 wherein:

the anti-entrapment means is operable with the motor current sensing means to generate an indication of a motor stall condition based on at least one of the rotor position and the motor current.

20. The system of claim 3 wherein:

the anti-entrapment means is operable with the back emf sensing means to generate an indication of a motor stall condition based on at least one of the rotor position and the back emf of the motor.

21. The system of claim 1 wherein:

the anti-entrapment means includes powered panel control means.

22. The system of claim 1 wherein:

the anti-entrapment means includes communication means for communicating one or more indications from the powered panel moving system to an external unit, wherein the external unit includes at least one of a controller that controls part of the operation of the moving system and an indication system for providing an indication of a condition of the system.

23. The system of claim 1 wherein:

the anti-entrapment means includes electronics for operating an obstruction detection sensor.

24. The system of claim 5 wherein:

the DC motor has a rated speed greater than 6,000 rpm.

25. The system of claim 1 wherein:

the drive means and the anti-entrapment means are realized within a single integrated circuit.