Systems and methods for controlling the position of a moving light fixture
First Claim
1. A moving light fixture comprising:
- a housing;
one or more light sources disposed within the housing;
a stepper motor operably coupled to the housing such that the stepper motor rotates the housing about an axis of rotation;
a magnetic position encoder configured to transmit a position signal indicating an angular position of the housing about the axis of rotation; and
an electronic controller configured toreceive a target position of the moving light fixture,determine the angular position of the housing about the axis of rotation based on the position signal,determine a current full step of the stepper motor based on the angular position of the housing about the axis of rotation,determine a current micro step of the stepper motor,determine a current position of the moving light fixture based on the current full step of the stepper motor and the current micro step of the stepper motor, anddrive the stepper motor to move the moving light fixture from the current position to the target position.
2 Assignments
0 Petitions
Accused Products
Abstract
Moving light fixture and method for controlling the position of a moving light fixture. In one example, the moving light fixture includes a housing, light sources, a stepper motor, a magnetic position encoder, and an electronic controller. The stepper motor rotates the housing. The magnetic position encoder is configured to transmit a position signal indicating an angular position of the housing. The electronic controller determines the angular position of the housing based on the position signal. The electronic controller also determines a full step of the stepper motor based on the angular position of the housing, and a micro step of the stepper motor. The electronic controller also determines a current position of the moving light fixture based on the full step and the micro step. The electronic controller drives the stepper motor to move the moving light fixture from the current position to a target position.
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Citations
20 Claims
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1. A moving light fixture comprising:
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a housing; one or more light sources disposed within the housing; a stepper motor operably coupled to the housing such that the stepper motor rotates the housing about an axis of rotation; a magnetic position encoder configured to transmit a position signal indicating an angular position of the housing about the axis of rotation; and an electronic controller configured to receive a target position of the moving light fixture, determine the angular position of the housing about the axis of rotation based on the position signal, determine a current full step of the stepper motor based on the angular position of the housing about the axis of rotation, determine a current micro step of the stepper motor, determine a current position of the moving light fixture based on the current full step of the stepper motor and the current micro step of the stepper motor, and drive the stepper motor to move the moving light fixture from the current position to the target position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling a position of a moving light fixture, the moving light fixture including one or more light sources disposed within a housing, and a stepper motor operably coupled to the housing such that the stepper motor rotates the housing about an axis of rotation, the method comprising:
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receiving a target position of the moving light fixture; determining, with a magnetic position encoder, an angular position of the housing about the axis of rotation; determining, with an electronic controller, a current full step of the stepper motor based on the angular position of the housing about the axis of rotation; determining, with the electronic controller, a current micro step of the stepper motor; determining, with the electronic controller, a current position of the moving light fixture based on the current full step of the stepper motor and the current micro step of the stepper motor; and driving the stepper motor to move the moving light fixture from the current position to the target position. - View Dependent Claims (10, 11, 12)
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13. A moving light fixture comprising:
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a housing; one or more light sources disposed within the housing; a first stepper motor coupled to the housing such that the first stepper motor rotates the housing about a first axis of rotation; a second stepper motor operably coupled to the housing such that the second stepper motor rotates the housing about a second axis of rotation; a first magnetic position encoder configured to transmit a first position signal indicating a first angular position of the housing about the first axis of rotation; a second magnetic position encoder configured to transmit a second position signal indicating a second angular position of the housing about the second axis of rotation; and an electronic controller configured to receive a target position of the moving light fixture; determine the first angular position of the housing about the first axis of rotation based on the first position signal, determine a current full step of the first stepper motor based on the first angular position of the housing about the first axis of rotation, determine the second angular position of the housing about the second axis of rotation based on the second position signal, determine a current full step of the second stepper motor based on the second angular position of the housing about the second axis of rotation, determine a current position of the moving light fixture based on the current full step of the first stepper motor and the current full step of the second stepper motor, and drive the first stepper motor and the second stepper motor to move the moving light fixture from the current position to the target position. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification