Wireless Power Transfer in Robot Arms for Unrestricted Motion
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Solution Overview
Problem
Conventional electrodynamic apparatuses, such as robot hands, face restrictions in the range of motion due to the presence of cables for power transmission, which can interfere with objects and lead to cable deterioration or breakage, requiring frequent maintenance.
Innovation Solution
The implementation of wireless power transmission using power transmission and reception antennas between the arms and support structures, eliminating the need for physical cables and allowing for greater flexibility and reduced maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cables are used for power transmission in movable parts, then electric power can be supplied to rotating mechanisms and end effectors, but the range of motion of the end effector is restricted and cables are prone to deterioration or breakage
Solution Approach 1:
The patent removes cables from movable parts by implementing wireless power transmission between the base and end effector. Power transmission antennas are installed in the base and end effector respectively, eliminating the need for physical cable connections in rotating joints and movable components, thereby resolving the contradiction between cable durability and range of motion.
Solution Approach 2:
The patent replaces the mechanical cable-based power transmission system with an electromagnetic wireless power transmission system. By using power transmission antennas that emit electromagnetic waves to supply power wirelessly to moving components, the system eliminates mechanical constraints while maintaining reliable power supply.
2Use of energy by moving object
If cables are present in movable parts, then power can be transmitted to rotating mechanisms, but cables interfere with objects and require frequent maintenance
Solution Approach 1:
The patent extracts cables from the system by implementing wireless power transmission. Power transmission antennas are installed in the base and end effector, allowing power to be transmitted wirelessly to rotating mechanisms and movable parts, thereby eliminating cable interference with objects and the need for frequent maintenance.
Solution Approach 2:
The patent substitutes the mechanical cable-based power transmission with an electromagnetic wireless power transmission system. This replacement eliminates the maintenance issues associated with cables in movable parts while ensuring continuous and reliable power supply to rotating mechanisms.
3Adaptability or versatility
If wireless power transmission is implemented, then range of motion is enhanced and maintenance is reduced, but power transmission efficiency may be affected by distance and positioning
Solution Approach 1:
The patent introduces power reception antennas in rotating mechanisms and movable parts as intermediaries to receive wireless power transmission. These antennas are strategically positioned to maintain optimal reception despite movement, ensuring efficient power transmission while preserving full range of motion capabilities.
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 solution enhances the range of motion for end effectors by removing cable-related restrictions and reducing the frequency of maintenance, as power is transmitted wirelessly, preventing cable deterioration and breakage.
Implementation Method 1
wireless power transmission via the power transmission antenna and the power reception antenna is performed
Data Source
Figure 1A~1C
Figure 2A~2B
Figure 3A~3B
AI summary
An electrodynamic apparatus includes a first arm extending in a first direction, a second arm supported by the first arm, and a first linear actuator that is provided in the first arm or the second arm and moves the second arm along the first direction with respect to the first arm. The first arm includes a first power transmission antenna. The second arm includes a first power reception antenna. The first power transmission antenna supplies electric power to the first power reception antenna wirelessly. The first power reception antenna supplies the supplied electric power to a load electrically connected to the first power reception antenna.