Articulated Joint Controller with Counterbalance for Motion Simulator
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Solution Overview
Problem
Current motion simulators in computer gaming environments often lack immersion due to the use of fixed controller positions, which disconnect the operator's proprioception from the virtual simulation, especially when performing fluid movements like those of a robot's arm.
Innovation Solution
A system of connected articulated joints mounted on a motion simulator platform, allowing the operator to move a controller freely and providing a counterbalance to reduce fatigue, offering a more immersive experience by simulating the kinesthetic sense of operating a virtual mechanical or biological arm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed position controller is used on the motion simulator, then the device complexity is reduced, but the user immersion and proprioception experience deteriorate
Solution Approach 1:
The controller is transformed from a fixed static mounting to a dynamic articulated structure that can move freely in multiple directions. The articulated joints with counterbalancing mechanisms enable the controller to dynamically adapt to user movements while maintaining realistic weight and resistance characteristics, thereby enhancing immersion without excessive complexity
Solution Approach 2:
Counterbalancing mechanisms are integrated into the articulated joint structure to offset the weight of the controller and simulate the sensation of moving a heavy mechanical arm. This provides realistic proprioceptive feedback while reducing the actual effort required by the user, resolving the contradiction between realistic physical sensation and operational ease
2Adaptability or versatility
If a freely moving controller is used on the motion simulator, then the user immersion and proprioception experience is improved, but the device complexity increases
Solution Approach 1:
The controller system is divided into multiple articulated segments connected by joints, each with its own counterbalancing mechanism. This segmentation allows the complex functionality to be distributed across modular components, making the system more manageable and maintainable while providing sophisticated movement capabilities for enhanced immersion
Solution Approach 2:
Articulated joints serve as intermediary elements between the user's hands and the virtual controller position. These joints with counterbalancing mechanisms mediate the physical movements, transforming user input into realistic mechanical arm movements in the virtual environment, thereby enhancing immersion without requiring direct complex mechanical linkages
3Adaptability or versatility
If a freely moving controller is used without counterbalance, then the adaptability and immersion experience is improved, but the operator fatigue increases
Solution Approach 1:
Counterbalancing mechanisms are integrated into each articulated joint to compensate for the weight of the controller and arm segments. This provides realistic proprioceptive feedback simulating heavy mechanical arm movement while simultaneously reducing the actual muscular effort required, allowing sustained operation without fatigue
Solution Approach 2:
The counterbalancing system dynamically adjusts the effective weight parameter of the controller through mechanical advantage and leverage ratios in the articulated joints. This allows the system to maintain realistic physical sensations while reducing the actual force requirements, enabling prolonged use without fatigue
Data Source
AI summary
A system including of a set of connected articulated joints are mounted to a motion simulator, which are controlled at one end by an operator with their hands. This system of connected articulated joints gives the operator the sensation of operating a mechanical or nonmechanical device, when counterbalanced reducing fatigue of moving controls freely for sustained periods of time.