Application method of analog output encoder based on analog access port driver

Abstract

The invention relates to the application field of analog output encoders, in particular to an analog output encoder using method based on an analog access port driver. The analog output encoder using method is good in anti-interference performance. According to the technical scheme, analog information output by the analog output encoder is converted into digital information through the analog-to-digital converter, after information processing, the number of wire cores of the data transmission line is greatly reduced in a serial digital communication transmission mode, the data transmission line can be sent to the position near the driving controller in a long-line mode, and the data transmission efficiency is improved. Data information is converted into analog information through a digital-to-analog converter, and then the digital-to-analog converter is connected with a driving controller. Compared with the prior art, the method provided by the invention has the characteristics of good anti-interference performance, low cost and high stability, is suitable for a driving controller adopting an analog information port in the existing market, and particularly can still realize accurate driving control in a high-speed state.

Description

technical field [0001] The present application relates to the application field of analog output encoders, in particular to a method for using an analog output encoder based on an analog access port driver with good anti-interference performance. Background technique [0002] In the field of automation technology, various position detection sensors are widely used in the position detection of motor control systems such as CNC machine tools, robots, and elevators. By subdividing the sine and cosine information, the analog output encoder can achieve a total resolution of more than 18BIT, which can obtain higher position accuracy than a single pulse information, and has unique advantages in improving the dynamic characteristics of the system. For example, when the analog output encoder is applied to the elevator control system, no matter whether the elevator traction machine is running at a low speed or the elevator traction machine is running at a high speed, the position info...

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Problems solved by technology

[0003] When the applicant applied the analog output encoder to the construction site of the elevator traction machine, he found that: since the output information of the analog output encoder is analog information, the transmission distance between the elevator traction machine and the elevator drive controller is at least several meters, and the analog output The noise tolerance of the analog information output by the encoder is low, and the long-distance drive power cable and the analog output encoder output cable are routed side by side, which is very easy to interfere with the analog information output by the analog output encoder, which has poor anti-interference performance Defects; analog output encoder analog information output port has a large number of port connections, high cost and poor stability; existing elevator drives and encoders basically use analog information access ports, and there are restrictions on access port modes

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