Separate Linear Encoder Yaw Angle Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing separate linear encoders face challenges in efficiently and accurately adjusting the yaw angle of a detection head with respect to a scale, relying on oscilloscope measurements which are inefficient and prone to inaccuracies.
Innovation Solution
Incorporating a first calculation device to determine the yaw angle based on the gap between detection portions, a second calculation device to assess signal strength, and a display device to show relationships between yaw angles and signal strengths, allowing for precise adjustment of the yaw angle by guiding it to the optimum position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If oscilloscope-based signal strength measurement is used to adjust yaw angle, then measurement capability is provided, but adjustment efficiency and accuracy deteriorate due to random movement and visual following requirements
Solution Approach 1:
The patent implements automatic feedback control by using the calculation device to continuously monitor signal strength from the oscilloscope and automatically adjust the yaw angle based on calculated optimal values, eliminating the need for manual visual following and random movement while maintaining measurement accuracy
Solution Approach 2:
The patent replaces the manual mechanical adjustment process with an automated calculation and control system that uses computational devices to determine optimal yaw angles and automatically implements adjustments, substituting human operation with automated mechanical control
2Ease of operation
If manual visual following of signal strength changes is used, then adjustment process is simple, but measurement accuracy and adjustment precision worsen due to difficulty in efficiently finding optimum angle
Solution Approach 1:
The system performs self-adjustment by automatically calculating optimal yaw angles and implementing corrections without requiring manual visual following, making the system self-correcting while maintaining operational simplicity through automated control
3Adaptability or versatility
If separate scale and detection head are assembled manually, then assembly flexibility is provided, but positioning accuracy deteriorates due to difficulty in maintaining predetermined mutual positional relationship
Solution Approach 1:
The patent uses automatic feedback control where the calculation device continuously monitors signal strength and automatically adjusts the detection head position relative to the scale, ensuring predetermined positional relationships are maintained without requiring high manual assembly precision
Solution Approach 2:
The patent replaces manual positioning and alignment operations with automated calculation and control systems that use computational algorithms to determine and implement precise positional relationships between separate components
Data Source
Figure 1~2
Figure 3(A)~3(B)
Figure 4
AI summary
In a separate encoder (100), a scale(102) is further provided with an ABS track(106) that is arranged in parallel with an INC track(104) and a detection head(110) includes an ABS detection portion (114) that reads the ABS track(106). The separate encoder (100) includes a calculation portion (120,220,320) that obtains a yaw angle (ϕ) of the detection head(110) with respect to a scale(102) based on a gap(d) between an INC detection portion (112) and an ABS detection portion (114) and a difference amount (δ) between a position(Xinc) of the INC track(104), which is detected by the INC detection portion (112), and a position(Xabs) of the ABS track(106), which is detected by the ABS detection portion (114). The calculation portion (120, 220, 320) also obtains a signal strength(I) based on two-phase sine wave signals(Am, Bm) that are output from the INC detection portion (112). The separate encoder (100) further includes a display unit(130,220,320) that displays a plurality of yaw angles (ϕ) and the signal strengths(I) corresponding to the respective yaw angles (ϕ).