Heavy load absolute type multi-ring resolving encoder

Abstract

The invention discloses a heavy load absolute type multi-ring resolving encoder, comprising an input shaft, a high-speed sealing ring, a heavy load labyrinth bearing cap; a heavy load bearing support, a heavy load bearing, a heavy load casing; a resolving base; a resolving stator, a resolving rotor, a resolving bearing cap, a precision bearing, a ring-number sending disk, a multi-ring counter PCB board, an RD connecting wire, an RD intelligent decoder PCB board, a data output PCN board, a bearing support O-shaped sealing ring, a bearing cap O-shaped sealing ring, an insulating shaft and a grounded braid. According to the invention, by perfectly combining resolver with microprocessor decoding chip and heavy load structure, the heavy load absolute type multi-ring resolving encoder which completely overcomes all the deficiencies existing in photoelectric encoder is formed with the characteristics of small size, good integration, high reliability and high precision. Compared with the photoelectric encoder, the heavy load absolute type multi-ring resolving encoder is especially prominently superior in position / speed feedback systems requiring high precision and high reliability.

Description

technical field [0001] The invention belongs to the field of automatic measurement and relates to an industrial detection technology. More particularly, it can provide high-reliability and high-precision absolute, incremental and analog angle position data to various automation systems. It can be used to measure the shaft angular position and speed in various occasions, especially suitable for various heavy-duty equipment and has a high-end interface. Background technique [0002] At present, high-precision heavy-duty photoelectric encoders are widely used in industrial sites of various heavy-duty equipment. Photoelectric encoders convert the input shaft angle position information into corresponding digital codes through photoelectric conversion. The photoelectric encoder is mainly composed of a photoelectric code disc, a grating, an LED photoelectric conversion tube and a conversion circuit. There are three main materials for photoelectric code discs: glass, plastic, and m...

AI Technical Summary

Problems solved by technology

The glass code disc has good temperature characteristics and no deformation. With the development of photolithography technology, it can achieve high precision, but it is fragile; the plastic code disc has poor performance in all aspects, but the price is cheap; the metal code disc The temperature characteristics are poor and easy to deform. Because photolithography technology cannot be used, it can only achieve medium or low precision, but it is durable; the LED photoelectric transmission tube will age and the emissivity will decrease after long-term continuous operation, which will make the reliability of the photoelectric encoder worse. Difference

Although engineers have made a heavy-duty design for the use of high-precision photoelectric encoders, due to the inherent defects of the glass code disc and LED photoelectric conversion tubes in the photoelectric encoder, in practical applications, under heavy shock and vibration The photoelectric encoder is often damaged if it is used on the load-carrying equipment and installed carelessly. With continuous use for a long time, the LED photoelectric conversion tube will age, and its reliability will also be greatly reduced. As the automation system requires high precision and reliability The requirements for performance are getting higher and higher. Today, the widely used photoelectric encoder has developed to a flat-top stage, especially in industrial sites that require high precision and high reliability.

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