Manipulation Unit Calibration for Precise Position Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing manipulation devices require manual setting of conversion expressions to convert rotational angles to pressing amounts, leading to increased work and potential precision issues due to individual device variations and assembly errors.
Innovation Solution
A manipulation device with a sensor, conversion unit, adjustment unit, and creation unit that automatically generates precise conversion information by acquiring detection values at various movement limit positions and creating an approximate expression for position calculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a conversion expression common to multiple manipulation devices is used, then the work and time required for setting is reduced, but conversion precision is lowered due to device variations and assembly errors
Solution Approach 1:
The system performs preliminary calibration by automatically detecting the actual movement limit positions and creating device-specific conversion information before normal operation begins. This preliminary measurement phase captures the unique characteristics of each manipulation device, enabling precise conversion without requiring manual setup time.
Solution Approach 2:
The system uses feedback from the sensor to detect actual movement limit positions and automatically adjusts the conversion expression accordingly. By continuously comparing detected positions with expected positions and refining the conversion information based on actual device behavior, the system achieves high precision while maintaining automation.
2Measurement precision
If manual setting of conversion expressions is performed for each manipulation device, then conversion precision is improved, but extra work and time are required
Solution Approach 1:
The manipulation device performs self-calibration by automatically detecting its own movement limit positions and generating appropriate conversion information without external intervention. The sensor detects positions, the creation unit generates conversion data, and the system stores this information automatically, eliminating the need for manual configuration while maintaining device-specific precision.
Solution Approach 2:
The system replaces manual mechanical adjustment and calibration processes with automated sensor-based detection and computational conversion information generation. Instead of physically adjusting components or manually inputting values, the system uses electronic sensing and algorithmic processing to achieve precise conversion automatically.
3Ease of manufacture
If conversion information is created without considering individual device variations, then the setup process is simplified, but precision is reduced due to assembling errors and time-varying changes
Solution Approach 1:
The system dynamically adjusts conversion parameters based on detected movement limit positions. By changing the conversion expression to match the actual physical characteristics of each device, the system maintains simplicity in the setup process while adapting to individual variations and assembly differences, thereby preserving both ease of manufacture and conversion accuracy.
Data Source
AI summary
A manipulation device has: a manipulation unit on which a movement manipulation is possible; a sensor that outputs a detection value according to the position of the manipulation unit; a conversion unit that converts a detection value acquired by an acquisition unit to information about the position of the manipulation unit, according to conversion information; an adjustment unit that can adjust the movement limit position of the manipulation unit; and a creation unit that acquires, from the sensor, a detection value at the time when the manipulation unit has reached each of a plurality of movement limit positions adjustable by the adjustment unit, and creates the conversion information according to a plurality of acquired detection values and to positional information indicating the actual positions of the plurality of movement limit positions.