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Incremental encoder output signal conditioning circuit and signal processing method of incremental encoder output signals

An incremental encoder and output signal technology, applied in the field of servo control system, can solve the problems of increasing differential signal transmission interference, low circuit integration, reducing measurement accuracy, etc., to enhance integration and reduce circuit boards. Dimension, the effect of increasing precision

Inactive Publication Date: 2017-12-05
LS INDAL SYST WUXI
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  • Abstract
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  • Application Information

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Problems solved by technology

Although this circuit is relatively simple, its disadvantage is that the voltage comparator 2 is used, which adds a comparison link, which makes the circuit integration level not high; in addition, due to the use of the comparator and several auxiliary components around it, the differential signal transmission is increased. Disturbances in the process reduce measurement accuracy

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  • Incremental encoder output signal conditioning circuit and signal processing method of incremental encoder output signals
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  • Incremental encoder output signal conditioning circuit and signal processing method of incremental encoder output signals

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[0023] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted.

[0024] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the invention. However, those skilled in the art will appreciate...

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Abstract

The present invention discloses an incremental encoder output signal conditioning circuit and a signal processing method of incremental encoder output signals. The circuit comprises: a differential signal conversion unit configured to convert at least two differential signals output by an incremental encoder to at least one single-way output signal; a photoelectric coupling unit configured to perform signal isolation of the at least one single-way output signal to provide at least one-way optical coupler isolation signals; and an inverter configured to perform reverse shaping of the at least one-way optical coupler isolation signals to improve at least one-way pulse signals. The incremental encoder output signal conditioning circuit reduces a voltage comparer in a current conditioning circuit and a plurality of elements around so as to reduce the size of a circuit board, enhance the integration level of the circuit, further reduce the interference in the differential signal transmission process and increase the measurement accuracy.

Description

technical field [0001] The invention relates to a servo control system, in particular to an incremental encoder output signal conditioning circuit and a signal processing method thereof. Background technique [0002] With the rapid development of DSP technology, the application of high-performance servo control system is more and more extensive. Among them, high-speed, high-precision sensors are the key to high-performance servo systems. The upper computer only needs to implement overall control and management of the controlled object, while the collection of feedback signals, calculation of closed-loop control, and output of control quantities are all completed by sensors, which greatly improves the computing speed and control of the servo control system. responding speed. The incremental encoder is the core of the feedback link, and the speed and accuracy of its feedback signal transmission are particularly important. Especially in a noisy environment, in order to solve...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04
CPCG05B19/04
Inventor 黄嘉楠
Owner LS INDAL SYST WUXI
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