Load-Based Variable Transmission Mechanism for Robotic Applications
This paper presents a novel Load-Based Variable Transmission (LBVT) mechanism that dynamically adjusts the transmission ratio in response to external torque demands, enhancing robotic actuation.
Why it matters
This novel LBVT mechanism can enhance the efficiency and adaptability of robotic actuation systems, which is crucial for legged robots and other applications requiring dynamic torque adjustment.
Key Points
- 1LBVT mechanism uses a pre-tensioned spring and four-bar linkage to passively modify transmission ratio
- 2Achieves up to 40% increase in transmission ratio when torque threshold is reached
- 3Provides torque amplification effect when applied force exceeds 18 N
- 4Contributes to lightweight, efficient, and adaptive transmission systems for robotic applications
Details
The LBVT mechanism is designed to improve robotic actuation by dynamically adjusting the transmission ratio based on external torque demands. Unlike existing variable transmission systems that require additional actuators, the proposed LBVT mechanism uses a pre-tensioned spring and four-bar linkage to passively modify the transmission ratio. Simulation-based analyses confirm that the LBVT system can achieve up to a 40% increase in transmission ratio when a predefined torque threshold is reached, effectively amplifying joint torque without additional actuation. Furthermore, the simulations demonstrate a torque amplification effect triggered when the applied force exceeds 18 N, highlighting the system's ability to autonomously respond to varying load conditions. This research contributes to the development of lightweight, efficient, and adaptive transmission systems for robotic applications, particularly in legged robots where dynamic torque adaptation is critical.
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