Haptic Feedback for Material Testing Setup
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Solution Overview
Problem
Material testing systems require longer setup times and are prone to errors due to operators needing to split attention between actuator positions and load/gauge displays, potentially leading to system or specimen damage.
Innovation Solution
Incorporating a haptic feedback system that provides tactile responses through an output shaft moved by a motor, allowing operators to receive feedback on position and state during setup, simulating specimen resistance, and indicating position or force limits to prevent over-travel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an operator manually adjusts actuator position by hand, then the operator can directly manipulate the actuator, but the operator must split attention between visual display and manual manipulation, leading to longer setup times and higher error rates
Solution Approach 1:
The system provides haptic feedback to the operator through the actuator shaft, allowing tactile perception of actuator position and load state. This feedback mechanism enables operators to monitor setup progress through touch rather than visual displays, eliminating the need to split attention between multiple displays and reducing setup time while maintaining operational ease
Solution Approach 2:
The patent replaces visual display-based positioning with tactile feedback-based positioning. Instead of relying on graphical interfaces and visual monitoring, the system uses mechanical haptic feedback transmitted through the actuator shaft to convey position and load information, allowing operators to manipulate and monitor the actuator simultaneously through tactile sensation alone
2Ease of operation
If an operator manually adjusts actuator position, then direct manipulation is possible, but errors in positioning and unintentional damage to system or specimen may occur
Solution Approach 1:
The haptic feedback system provides real-time tactile information about actuator position and load state directly to the operator's hand. This continuous feedback enables precise positioning without visual reference, as the operator can sense when the actuator reaches desired positions or encounters resistance, thereby improving positioning accuracy while maintaining direct manipulation capability
Solution Approach 2:
The system utilizes vibration-based haptic feedback to communicate actuator state and position to the operator. Tactile vibrations indicate specific positions, limits, or abnormal conditions, providing reliable positioning information through mechanical sensation rather than visual display, thus preventing positioning errors and unintended damage
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Reduces setup time and errors by allowing operators to focus on setup without visual reference, enhancing safety by preventing over-travel and providing a simulated experience of specimen resistance.
Implementation Method 1
an output shaft configured to be moved by operation of a motor
Implementation Method 2
The tactile response includes moving the output shaft by the motor
Implementation Method 3
the output shaft coupleable to a test specimen such that movement of the output shaft imparts a mechanical force on the test specimen
Data Source
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AI summary
Disclosed is a material testing system that includes an output shaft configured to be moved by operation of a motor, the output shaft coupleable to a test specimen such that movement of the output shaft imparts a mechanical force on the test specimen. The material testing system includes a haptic feedback system configured to provide an operator of the material testing system haptic feedback related to a position or state of the output shaft relative to the test specimen during setup. Methods of testing using haptic feedback are also disclosed.