Motion control system for barrier drive
AssigneeLinear Corporation
InventorsRobert Hotto, Paul Kahn, Lambert Ling
Life of this patent
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Abstract
A system for operating a barrier system such as a garage door, gate or fence. A DC motor is connected to and operates a barrier drive. A power amplifier is configured to receive power signals from a power supply and to output modulated DC signals to the DC motor. A controller implements an intelligent closed-loop motion control algorithm to control the power amplifier according to a non-linear motion profile. A feedback sensor provides status signals to the controller to determine position or speed of the barrier.
Claims20
A barrier operator system comprising:
- a barrier drive;
- a motor connected to a and operating the barrier drive;
- a power amplifier that drives the motor;
- a sensor that provides feedback in a form of position, direction or speed:
- a controller with memory that stores a predetermined non-linear motion profile for the barrier drive, and that receives the feedback from the sensor and dynamically adjusts a control signal provided to the power amplifier according to the predetermined non-linear motion profile, wherein said motor, power amplifier, sensor and controller implement a closed-loop motion control algorithm to control the barrier drive according to the stored non-linear motion profile;
- and
- an interface for user-initiated input.
(canceled)
A barrier operator system comprising:
- a barrier drive;
- a motor connected to and operating the barrier drive;
- a power amplifier and direction control circuit configured to receive power signals from a power source and to output modulated DC signals to the motor;
- a sensor that provides feedback in a form of position, direction or speed;
- a controller with memory that stores a predetermined non-linear motion profile for the barrier drive, and that receives the feedback from the sensor and dynamically adjusts a control signal provided to the power amplifier according to the predetermined non-linear motion profile, wherein said motor, power amplifier, sensor and controller implement a closed-loop motion control algorithm to control the barrier drive according to the stored non-linear motion profile;
- and
- an interface for user-initiated input.
A barrier operator system comprising:
- a barrier drive;
- a motor connected to and operating the barrier drive;
- a power amplifier and direction control circuit;
- a sensor that provides feedback in a form of position, direction, speed:
- and
- a controller with memory that stores a predetermined non-linear motion profile for the barrier drive, and that receives the feedback from the sensor and dynamically adjusts a control signal provided to the power amplifier according to the predetermined non-linear motion profile, wherein said motor, power amplifier, sensor and controller implement a closed-loop motion control algorithm to control the barrier drive according to the stored non-linear motion profile, the motion profile including a motion profile segment starting the movement of a barrier, the segment comprising an over-voltage mode for increased starting torque and quick acceleration.
A barrier operator system comprising:
- a DC motor connected to a barrier drive;
- and
- a variable switching off-line power amplifier connected between the DC motor and a power source that controls the motor with pulse modulated signals.
Dependencies are inferred from the claim text.