absolute encoder

Abstract

The invention discloses an absolute type encoder. An existing encoder is mainly used for measuring positions and the speed of rotational and linear motion components, inevitable drive mechanical errors exist, and the angle control requirement of an aerodynamic test is difficult to meet. The absolute type encoder comprises a connecting support (8) and an encoding synthetic system. The connecting support is installed in a motion trail sliding rail (9) of a protection shell (10). The two sides of the connecting support are connected with a curve grating measurement system and a curve resistance measurement system. The curve grating measurement system comprises a counter, a parallel light source (2) and a collector (4), wherein the parallel light source and the collector are installed on the connecting support, and a curve grating ruler (1) is arranged between the parallel light source and the collector. The curve resistance measurement system comprises a resistance measuring meter, an analog-digital converter and an electric brush support (7), wherein the two ends of the electric brush support are connected with the connecting support and an electric brush (6) respectively, and the electric brush is in contact connection with a curve resistance ruler (5). The absolute type encoder is used for the field of encoders.

Description

Technical field: The invention relates to an absolute encoder. Background technique: Existing encoders are mainly used to measure the position and speed of rotating and linear moving parts, but for large-radius arc moving or curved moving parts, the principle of measurement technology is mainly to use the rotary encoder of the motor to convert the position of the curve. There are mechanical errors in the transmission that are difficult to avoid in the device and measurement technology, so it is impossible to accurately measure its position and speed. The motor rotary encoder used in the prior art calculates the curve stroke and the linear velocity of the large-radius arc part by measuring the angle and rotating speed of the motor rotation. But in the angle of attack position control system such as aerodynamic test, the motor to the controlled object needs to pass through mechanical equipment such as reducer and worm, and each mechanical contact has a certain mechanical er...

AI Technical Summary

Problems solved by technology

It is difficult to meet the angle control requirements of aerodynamic tests

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