AACMM Hand-Control Sensor for Accurate Manual Guidance
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Solution Overview
Problem
Existing manually guided articulated arm coordinate measuring machines (AACMMs) face challenges in achieving high mobility, accessibility, and accuracy due to the need for intuitive motor control and precise measurement of operator actions, which are often non-intuitive and lead to inaccuracies.
Innovation Solution
An operator action sensor is mounted on a hand-controlled member of the AACMM to detect and measure the force, torque, and displacement exerted by the operator, providing data that aids in improving the handling and accuracy of the machine, and includes feedback and command input elements for enhanced control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the AACMM is operated with manual guidance using two-handed grip or one-handed grip, then the mobility and accessibility are improved, but the measurement precision deteriorates due to non-intuitive control and inability to accurately measure operator actions
Solution Approach 1:
The patent implements feedback by mounting sensors on hand-controlled members to detect operator actions (forces, torques, displacements) and providing this information back to the control system. This allows the system to compensate for operator influence and maintain measurement accuracy while preserving manual guidance benefits
Solution Approach 2:
The patent replaces pure mechanical manual control with a hybrid system that incorporates electronic sensors and control algorithms. The mechanical hand-controlled members are augmented with force/torque sensors and displacement sensors, transforming the system from purely mechanical to electromechanical with intelligent compensation
2Ease of operation
If servo units are added to aid operator guidance, then the ease of operation is improved, but the device complexity increases and control becomes non-intuitive
Solution Approach 1:
The system provides self-service by automatically detecting operator intentions through sensors on hand-controlled members and autonomously calculating compensation actions. The control system serves itself by processing sensor data and generating appropriate servo commands without requiring complex manual intervention or programming
3Stability of the object's composition
If the hand-controlled member is held firmly by the operator, then the control stability is improved, but the measurement of operator action deteriorates due to excessive force and torque
Solution Approach 1:
The system applies counterweight by detecting excessive forces and torques on hand-controlled members and generating compensatory servo actions to balance the system. This allows operators to maintain firm grip for stability while the system counteracts the influence on measurement accuracy
Data Source
AI summary
An articulated coordinate measuring machine comprising, a base, a set of articulated elements, a probe and an operator action sensor mounted on a hand-controlled member. The operator action sensor is configured to derive operator action data, regarding a force or a torque exerted or a displacement caused by an operator action on a hand-controlled member of the articulated arm coordinate measuring machine.