Measurement Sensor Axis Optimization for Faster Point Measurement
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Solution Overview
Problem
Existing measurement systems, such as coordinate measuring machines, face inefficiencies due to the need for numerous and large axis changes when moving the measurement sensor between measurement points, which prolongs the measurement time due to kinematic limitations.
Innovation Solution
A method and system that determine permissible measurement directions and positions for the measurement sensor, allowing for the optimization of movement axes to minimize axis changes while maintaining measurement accuracy, using direct kinematics to calculate optimal axis positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the measurement sensor is moved along movement axes to reach each measurement point with exact target measurement direction, then measurement accuracy is maintained, but measurement time increases due to numerous and large axis changes
Solution Approach 1:
The patent changes the parameters of measurement direction and position by introducing tolerance ranges. Instead of requiring exact target measurement directions, the system determines permissible measurement directions that deviate from the target direction but still comply with specified tolerances. This parameter change allows the measurement sensor to reach measurement points more quickly while maintaining measurement accuracy within acceptable limits.
Solution Approach 2:
The patent applies partial action by not requiring complete adherence to the exact target measurement direction for every measurement point. Instead, it satisfies a portion of the requirement (compliance with tolerance) rather than the full requirement (exact target direction), thereby reducing axis changes and measurement time while maintaining sufficient measurement accuracy.
2Measurement precision
If the measurement sensor is reoriented frequently to align with target measurement directions, then measurement quality is ensured, but measurement speed decreases due to kinematic limitations
Solution Approach 1:
The patent changes the orientation parameter by allowing deviation from the exact target measurement direction. The control device determines permissible measurement directions that fall within tolerance ranges, enabling the measurement sensor to maintain acceptable measurement quality while reducing the frequency and magnitude of reorientation movements, thereby increasing measurement speed.
Solution Approach 2:
The patent introduces dynamic adaptability in the measurement process by allowing the measurement direction to vary within permissible ranges rather than being fixed at the exact target direction. This dynamic approach enables the system to adapt to kinematic limitations and optimize movement speed while maintaining measurement quality through tolerance-based validation.
3Measurement precision
If exact target positions are enforced for the measurement sensor, then measurement accuracy is maintained, but axis reorientation becomes more frequent and time-consuming
Solution Approach 1:
The patent changes the position parameter by introducing permissible position ranges around target positions. The control device determines permissible measurement positions that comply with specified tolerances, allowing the measurement sensor to reach measurement points with fewer and smaller axis adjustments. This maintains measurement accuracy within acceptable limits while improving measurement efficiency by reducing repositioning time.
4Reliability
If the measurement system follows predefined measurement paths with exact coordinates, then measurement reliability is ensured, but measurement time increases due to unnecessary axis movements
Solution Approach 1:
The patent changes the path parameters by allowing deviation from exact predefined coordinates. Instead of forcing the measurement sensor to follow precise predetermined paths, the system determines permissible paths that stay within tolerance ranges. This maintains measurement reliability by ensuring measurements remain within acceptable parameters while reducing measurement time by eliminating unnecessary axis movements.
Data Source
AI summary
A method for controlling a measurement system including a measurement object holder and a measurement sensor. The measurement sensor defines a reference point for measuring the measurement object and can be moved relative to the measurement object holder along multiple movement axes for measuring multiple measurement points of a measurement object. The method includes determining at least one of multiple permissible measurement directions and multiple permissible measurement positions of the measurement sensor. The method includes determining multiple permissible axis positions of at least one movement axis of the movement axes for each of the measurement points. The method includes determining an optimal axis position of the at least one movement axis for each of the measurement points from the permissible axis positions previously determined for the respective measurement point.