X-ray Imaging Apparatus Dynamic Assist Control
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Solution Overview
Problem
Conventional X-ray imaging apparatuses require complex operations to adjust the amount of motor assist when manually moving the radiation source, especially when fine adjustments are needed, due to the need for repeated direction reversals to decrease assist, complicating the process.
Innovation Solution
An X-ray imaging apparatus with a controller that adjusts the amount of assist from the drive based on operation button inputs, current and target positions, and detected operation force, allowing for simple and automatic changes in assist levels, improving operability and accuracy by increasing assist for larger distances and decreasing it for finer adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the amount of assist from the motor is decreased to finely adjust the position of the radiation source, then positioning precision is improved, but the operation becomes complicated due to the need for repeated direction reversals
Solution Approach 1:
The system dynamically adjusts the assist force based on the distance between current and target positions. When the radiation source is far from the target, higher assist force enables quick movement. When close to the target, the assist force is automatically reduced to enable fine positioning, eliminating the need for manual direction reversals and simplifying operation while maintaining precision
Solution Approach 2:
The control unit continuously monitors the position of the radiation source and adjusts the motor assist force in real-time based on feedback from position sensors. This closed-loop control automatically reduces assist force when the source approaches the target position, enabling precise positioning without complex manual operations
2Speed
If the amount of assist from the motor is increased to move the radiation source quickly over long distances, then moving speed is improved, but the positioning precision deteriorates when fine adjustments are needed
Solution Approach 1:
The assist force is dynamically adjusted according to the distance between current and target positions. For large distances, high assist force provides rapid movement. As the source approaches the target, the assist force is automatically reduced to enable precise positioning, thus achieving both high speed and high precision without compromise
Data Source
AI summary
An X-ray imaging apparatus includes a controller configured or programmed to perform control to change an amount of assist from a drive in manually moving a moving body based on at least one of operation of an operation button configured to receive an operation for moving the moving body or an operation for aligning the moving body and a current position and target position of the moving body.