Wide bore rotary encoder

A rotary encoder and large-diameter technology, applied in the field of encoders, can solve problems such as errors, and achieve the effects of high precision, flexible application, and low cost

CN1277104CInactive Publication Date: 2006-09-27SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2006-09-27
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

It is a large-diameter rotation coder, which comprises the following: a mounting ring with matching size to the rotation parts; a grating rule stick on the circle range more than 180 degrees in outside of the mounting ring; a zero mark located on the mounting ring on one end of the grating rule; first reader probe and second reader probe relative to the mounting ring fixed on the parts, wherein, the said first reader probe and second reader probe output end is connected to the reader through process circuit.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to an encoder, especially a large-diameter rotary encoder, which is suitable for measuring the rotation angle of rotating parts with any shape and size, and is especially suitable as a large-diameter, high-precision position sensor. Background technique

[0002] Rotary motion is used in many electromechanical systems, such as: wheel discs, wafer handling, machine tool rotary axes, angle testers, etc. Due to the introduction of mechanical vibration and noise during the transmission process, these will affect the accuracy of the entire system. Therefore, a rotary encoder is usually used as a position sensor, and the feedback information of the rotational position is introduced through the position closed loop to continuously correct the relationship between the controlled value and the input value. The deviation between them can improve the system accuracy.

[0003] Optical encoders have become one of the most commonly used positio...

Examples

Embodiment Construction

[0021] The present invention will be further described below in conjunction with the drawings and a specific embodiment, but the protection scope of the present invention should not be limited by this.

[0022] see first Figure 4 and Figure 5 , as can be seen from the figure, the large-diameter rotary encoder of the present invention includes a grating scale 2, a first reading head 3, a second reading head 4 and a zero mark 8, and is characterized in that the composition of the rotary encoder is: one and the to-be-measured Rotate the assembly ring 1 that the size of the parts matches, paste the grating scale 2 on the outer side of the assembly ring 1 greater than 180°, and install the zero mark 8 on the assembly ring at one end of the grating scale 2 1, the first reading head 3 and the second reading head 4 are relatively installed on the fixed part with respect to the assembly ring 1, and the output terminals of the first reading head 3 and the second reading head 4 pass t...