Motorized C-Arm Wheel Steering for Precise Positioning
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Solution Overview
Problem
Existing mobile C-arm systems face challenges in precise positioning and direction reversal, particularly when moving in complex directions such as backwards, sideways, or diagonally, and maintaining stability on uneven surfaces during clinical applications.
Innovation Solution
The C-arm system incorporates two steerable and motorized wheels with integrated electric motors and a freely movable wheel, allowing for precise orientation and movement control by locking the wheels in any direction, enabling flexible movement and stability on inclined planes through the use of omni wheels and a control apparatus for individual wheel actuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual wheel displacement is used, then the device can be moved with simple structure, but precise positioning and direction reversal are difficult to achieve
Solution Approach 1:
The patent replaces manual mechanical wheel displacement with an electric motor-driven system. Each wheel is equipped with an electric motor that can be independently controlled, enabling precise positioning and accurate direction reversal through electronic control signals rather than manual mechanical operation.
Solution Approach 2:
The wheel drive system is segmented into independent motorized wheel units, where each wheel has its own electric motor and can be controlled independently. This segmentation allows for precise individual wheel control, enabling accurate positioning and complex movement patterns including direction reversal.
2Ease of operation
If motorized wheel drive is implemented, then automated movement is achieved, but control in opposite directions and precise positioning becomes more complex
Solution Approach 1:
The patent implements a dynamic steering system where the orientation of steerable wheels can be continuously adjusted and locked in any direction. The electric motors provide dynamic control capability, allowing the system to adapt wheel orientation and rotation speed in real-time for precise positioning and automated movement in any direction.
Solution Approach 2:
The control apparatus monitors the position and orientation of each motorized wheel and adjusts control signals accordingly to achieve precise positioning and accurate direction reversal. Feedback from sensors on the wheels enables the control system to maintain precise control despite the complexity of multiple independent motorized components.
3Reliability
If wheels are locked in fixed directions, then stable movement in main directions is achieved, but flexibility in intermediate directions is reduced
Solution Approach 1:
The patent implements a dynamic wheel orientation system where steerable wheels can be positioned at any angle between fixed directional locks. The electric motors enable continuous adjustment of wheel orientation, providing flexibility for intermediate directions while maintaining the stability of locked positions for main movement directions.
Solution Approach 2:
The system changes the orientation parameter of steerable wheels dynamically based on required movement direction. Wheels can be locked at specific angles for stable main direction movement, or positioned at intermediate angles for flexible diagonal or sideways movement, with the control apparatus adjusting wheel orientation parameters in real-time.
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
This configuration enhances the mobility and stability of the C-arm system, enabling precise positioning and direction reversal, even on uneven surfaces, and allows for smooth navigation around curves and precise control during panoramic recordings.
Implementation Method 1
Each of the at least two wheels (11, 12, 13) comprises an electric motor (16, 17, 18). The electric motor (16, 17, 18) comprises a stator (21, 22, 23) and a rotor (24, 25, 26). Electromagnets (27, 28, 29) are arranged in the stator (21, 22, 23) of the electric motor (16, 17, 18), and permanent magnets (30, 31, 32) are arranged in the rotor (24, 25, 26)
Data Source
AI summary
The invention relates to a mobile C-arm system (C1), at least comprising at least three wheels, at least two wheels each having an electric motor, wherein the electric motor has a stator (S) and a rotor (R), the stator (S) being connected to a wheel suspension (T) of the wheel and the rotor (R) being surrounded peripherally by a running wheel (L).