Method for accurately positioning absolute encoder and control device

Abstract

The invention provides a method for accurately positioning an absolute encoder and a control device. The method comprises the following steps of: acquiring and correcting an encoding signal output by the absolute encoder to generate a correction result; and making the encoder output an encoding signal according to the correction result, so that the encoding signal of the encoder can accurately represent the displacement of an output component. By adopting the method and the control device, the encoding signal of the encoder accurately represents the displacement of a printed body without being influenced by the axial accuracy of the encoder in a digital printing system, so that the self-adaptability of the system is enhanced and the machining accuracy of an encoder shaft is lowered by the method and the device in the digital printing system, and digital printing quality is finally ensured.

Description

Technical field [0001] The present invention relates to the field of digital printing technology. More specifically, the present invention relates to a method and a control device for accurately positioning an absolute encoder. Background technique [0002] Digital printing is a printing technology that has developed rapidly in recent years. It uses a method of directly transmitting, processing, and printing data. That is, the imaging data is input once, and the imaging component is directly controlled by the control system to image. For the commonly used on-demand digital printing equipment for inkjet printing, the imaging component is under the control of the control system. When the surface of the printing body (such as paper) reaches a predetermined position, the piezoelectric crystal in the nozzle generates pulses to squeeze out the ink. And spray mist ink droplets directly to the surface of the substrate (such as paper) for imaging. [0003] Generally, the digital printing ...

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Problems solved by technology

[0011] Therefore, in order to solve the problem of how to accurately represent the actual output displacement of the output part with the coded signal of the encoder in the prior art, and the output displacement of the output part is not affected by the shaft accuracy of the encoder, to overcome the problems existing in the prior art The object of the present invention is to provide a method and control device for precise positioning of absolute encoders, which can make the encoder's encoded signal accurately represent the displacement of the output part, and can not be affected by the accuracy of the encoder shaft, thereby Utilizing the method and device in a digital printing system improves the adaptability of the system and reduces the machining accuracy of the encoder shaft, thereby finally ensuring the quality of digital printing

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