Robot Arm Link Antenna Layout for Stable Wireless Control
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Solution Overview
Problem
Robot arms with articulated structures face instability in wireless communication due to changing orientations, which can lead to interrupted connections, especially when using high-frequency methods like Wi-Fi, IEEE 802.1, 4G, and 5G, as the number of communication cables increases inflection resistance and thickening is required, and existing solutions struggle to maintain stability during great motion.
Innovation Solution
A robot apparatus with a wireless communication unit integrated into the link of the robot arm, utilizing multiple antennas that can adjust their orientation and combination based on the robot arm's position to maintain stable communication, employing a node control system and PWM noise reduction to prevent adverse effects on wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If wireless communication methods like Wi-Fi, IEEE 802.1, 4G, and 5G are used in robot arms, then communication speed and data transfer capability are improved, but communication stability deteriorates due to robot arm orientation changes and peripheral device interference
Solution Approach 1:
The patent applies dynamics by making the antenna configuration adaptive to the robot arm's orientation. The system dynamically selects and switches between multiple antennas based on the current orientation of the robot arm, ensuring that at least one antenna maintains stable communication regardless of how the arm moves. This dynamic adaptation resolves the contradiction between high-speed wireless communication and communication stability during motion.
Solution Approach 2:
The patent changes the parameter of antenna selection based on robot arm orientation. By monitoring the orientation state and switching between different antennas (each with different radiation patterns and orientations), the system maintains optimal communication parameters despite changes in physical position, thereby preserving both speed and stability.
2Measurement precision
If multiple communication cables are used to control motors in each joint of the robot arm and robot hand, then control precision is improved, but the inflection resistance of cables deteriorates and the robot arm requires thickening
Solution Approach 1:
The patent replaces the mechanical cable-based communication system with a wireless communication system. By substituting physical cables with wireless signals transmitted via multiple antennas, the system eliminates inflection resistance issues and removes the need to thicken the robot arm to accommodate cable routing, while maintaining control precision through adaptive antenna selection.
3Device complexity
If a single antenna is used for wireless communication in the robot arm, then device complexity is reduced, but communication reliability deteriorates during great motion
Solution Approach 1:
The patent segments the communication function across multiple antennas instead of relying on a single antenna. Each antenna is positioned and oriented differently to cover specific spatial directions. By dividing the communication task across multiple segments (antennas), the system ensures that at least one segment remains effective during any given orientation, maintaining reliability without excessive complexity.
Solution Approach 2:
The patent implements multi-functionality by designing a system where multiple antennas serve different spatial coverage functions. Each antenna is optimized for specific orientations, and collectively they provide universal coverage for all possible robot arm positions. This allows the communication system to function reliably across the entire operational range of the robot arm.
Data Source
AI summary
A robot apparatus capable of performing a stable wireless communication is provided. The robot apparatus includes a robot arm including a link, a first control device disposed in the robot arm, a second control device, and a wireless communication unit configured to enable the first control device and the second control device to communicate with each other wirelessly. The wireless communication unit is disposed in the link.