Transmission part control method and system of head shaking lamp

Abstract

The invention discloses a transmission part control method and system for a head shaking lamp. The method comprises the steps of determining an offset distance of a stepping motor according to a preset first rotating speed, and controlling the stepping motor to move from an initial position to a middle position at the first rotating speed, wherein the step pitch stroke of the stepping motor from the initial position to the middle position is the sum of the target step pitch stroke and the offset distance, and the target step pitch stroke is the step pitch stroke of the stepping motor from theinitial position to a target position; and according to a preset second rotating speed, controlling the stepping motor to move reversely at the second rotating speed, and enabling the stepping motor to move to the target position from the middle position. By adopting the embodiment, angle deviation caused by elastic deformation of a belt can be reduced, and the positioning precision of the head shaking lamp is improved.

Description

technical field [0001] The invention relates to the field of stage lighting technology, in particular to a method and system for controlling a transmission mechanism of a moving head lamp. Background technique [0002] The lamp head transmission system of stage moving head lamps usually uses gears and synchronous belts as the transmission parts. It has the characteristics of simple and reliable structure, high transmission efficiency, convenient debugging, and low cost. It is widely used in the transmission system of stage moving head lamps. In the process of implementing the present invention, the inventors found that the following technical problems exist in the prior art: the timing belt itself has stretching elasticity, and the deformation and displacement caused by different pulling forces are different, which easily causes angle positioning deviation. Since the positioning accuracy of stepper motors used in stage moving head lamps is not high, and the requirements for ...

AI Technical Summary

Problems solved by technology

The inventor found in the process of implementing the present invention that there are the following technical problems in the prior art: the synchronous belt itself is flexible, and the deformation and displacement caused by different pulling forces are different, which easily causes angular positioning deviation

Due to the low positioning accuracy of stepper motors used in stage moving head lamps, and the low requirements for optical code detection accuracy, the small angle offset caused by the elastic deformation of the synchronous belt is smaller than the effective range of optical code detection

The angle caused by the elastic deformation of the synchronous belt is projected through the optical long-distance. After the angle is multiplied, the projected light spot will have a significant position shift, which will affect the lighting design effect of the lighting engineer.

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