Borescope Steering Cable Tension Feedback for Slack Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional borescopes develop cable slack over time due to insertion tube compression and cable stretch, leading to loss of articulation and responsiveness, as motors with limited stroke cannot accommodate extra cable tension.
Innovation Solution
A system that includes a sensor attached to a steering cable to detect tautness, with a motor and processor adjusting the drive setting to compensate for cable slack by increasing or decreasing the motor's stroke, using a potentiometer to maintain optimal tension and extend the system's useful life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If motors with limited stroke are used in conventional borescopes, then the device structure is simple, but cable slack develops over time leading to loss of articulation and responsiveness
Solution Approach 1:
The system employs a sensor to detect cable tension and provides feedback to a controller, which adjusts the motor stroke accordingly. This closed-loop feedback mechanism maintains optimal cable tension despite cable stretch over time, preventing slack and preserving articulation responsiveness without requiring manual intervention or complex mechanical adjustments
Solution Approach 2:
The motor stroke is made dynamically adjustable rather than fixed. The system continuously adapts the motor stroke length based on real-time cable tension measurements, allowing the borescope to compensate for cable elongation and maintain optimal performance characteristics throughout its operational life
2Length of moving object
If cable length is increased to reach deeper equipment, then inspection capability is improved, but cable slack development becomes more pronounced
Solution Approach 1:
The sensor-based feedback system continuously monitors cable tension regardless of cable length. Even in long cables where slack development is more pronounced, the system detects tension changes and adjusts motor stroke accordingly, maintaining stable cable tension and ensuring reliable articulation control throughout the entire cable length
Solution Approach 2:
The system changes the motor stroke parameter dynamically to compensate for cable length-related slack. By adjusting the stroke length based on real-time tension measurements, the system maintains optimal mechanical coupling between the motor and cable regardless of the total cable length, enabling deep equipment inspection without sacrificing tension stability
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
The system effectively adapts to cable slack over time, maintaining optimal tension and responsiveness, extending the life of the borescope by allowing the motor to utilize additional stroke as needed, even in long cables where slack development is more pronounced.
Implementation Method 1
measuring a force exerted on the elastically deformable device with a sensor
Implementation Method 2
an elastically deformable device... the cable... tension on the cable
Data Source
AI summary
A method includes transmitting an instruction to a motive power supply of an elastically deformable device to drive the elastically deformable device in accordance with a drive setting; measuring a force exerted on the elastically deformable device with a sensor; outputting an observed value representative of the force; comparing the observed value with a reference value corresponding with a predetermined force to be exerted on the elastically deformable device; and adjusting the drive setting based on a determination that the observed value is outside of a predetermined range of the reference value. The method prevents slack in the elastically deformable device over time. Related apparatuses, systems, techniques and articles are also described.