X-ray Imaging Apparatus Height-Dependent Assist Control
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Solution Overview
Problem
Conventional X-ray imaging apparatuses experience a decrease in operability when the X-ray tube or detector is manually moved to high or low positions, as operators struggle to apply sufficient force due to the height, leading to increased difficulty in moving these components.
Innovation Solution
An X-ray imaging apparatus with a moving body supported by a drive system and a controller that adjusts the assistive force based on the height position, using motors and position detectors to provide enhanced power assist, ensuring easier manual movement regardless of the height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the radiation source is located at a high position, then the X-ray imaging apparatus can cover a wider imaging area, but the operator finds it difficult to apply force to the operation unit, decreasing operability
Solution Approach 1:
The assist force provided by the servomotor is dynamically adjusted based on the height position of the moving body. The controller increases the assist force when the moving body is at high positions and decreases it at low positions, making the operation force consistent across different heights. This dynamic adjustment resolves the contradiction by adapting the system's mechanical assistance to the operator's physiological limitations at different positions.
Solution Approach 2:
The control system changes the parameter of assist force magnitude based on the detected height position of the moving body. By detecting the position and correspondingly adjusting the servomotor's output force, the system compensates for the operator's reduced ability to apply force at high positions, thereby maintaining consistent operability across the full range of motion.
2Weight of moving object
If the radiation source is manually moved to high positions, then the imaging coverage is improved, but the force required to move the radiation source exceeds the operator's capability, making operation difficult
Solution Approach 1:
The servomotor provides an assist force that counteracts the effective weight of the moving body, particularly at high positions where the operator's ability to apply force is reduced. The controller calculates the required assist force based on the height position and applies it through the servomotor, effectively compensating for the gravitational and inertial forces that make manual operation difficult.
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 significantly reduces the feeling of heaviness and maintains operability by increasing assistive force at high positions and maintaining consistent assist at low positions, preventing a decrease in operability across varying heights.
Implementation Method 1
a servomotor that moves the radiation source
Data Source
AI summary
An X-ray imaging apparatus includes an X-ray tube, an X-ray detector, a moving body configured to support at least one of the X-ray tube and the X-ray detector in such a manner that at least the one of the X-ray tube and theX-ray detector is movable in a predetermined direction, a drive configured to provide an amount of assist for moving the moving body in the predetermined direction, and a controller configured or programmed to perform control to change the amount of assist to be provided to the moving body by the drive according to a height position of the moving body when the moving body is manually moved.