Control method, control device and projection system of axis-shifting motor

Abstract

The present invention relates to the technical field of motor control, and the embodiment specifically discloses a control method, a control device and a projection system for a shaft-shifting motor. The control method of the shaft-shifting motor provided in the present application drives the moving part to move when the shaft-shifting motor rotates, and a first positioning sensor and a second positioning sensor are arranged at both ends of the moving part's motion path; receiving the first motion command, controlling the moving part The shaft motor rotates in the first direction and the method of controlling the number of steps of the shaft-shifting motor over the first positioning sensor does not exceed the preset number of steps over the positioning sensor realizes walking out of the position of the positioning sensor and recording the number of steps over the positioning sensor through more accurate software , reducing the error from the shifting axis to the head position due to multi-stage gear amplification.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a control method, a control device and a projection system for an axis-shifting motor. Background technique [0002] At present, the projection motor products on the market generally use two light sensors or optocouplers for end-of-end detection. Manually moving to the positions of the two positioning sensors is considered as end-of-end. However, since the shaft-shifting motor reaches the optical engine module, the error is amplified step by step after multiple gears are decelerated. Adding the projection distance from the optical engine to the projection surface, the overall error will be amplified, which will cause actual The shift stops before reaching the end position, and the overall range of the shift is incorrect. And the focus motors or shaft-shifting motors on the market are all running at a fixed pulse per second (PPS). There may be vibration when the motor start...

AI Technical Summary

Problems solved by technology

However, since the shaft-shifting motor reaches the optical engine module, the error is amplified step by step after multiple gears are decelerated. Adding the projection distance from the optical engine to the projection surface, the overall error will be amplified, which will cause actual The shift axis stops before reaching the end position, the overall range of the shift axis is incorrect

And the focus motors or shaft-shifting motors on the market are all running at a fixed pulse per second (PPS). There may be vibration when the motor starts and stops (for example, the motor suddenly increases from no speed to a sudden speed), and when the shaft shifts When the motor drives the moving part to move from top to bottom, the projection surface is relatively farther away from the optical machine at the bottom, and the top is closer, which will cause the actual image on the projection surface to move faster when it is down, and move faster at the top. slow

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