A novel control framework for nonlinear time-delayed dual-master/single-slave teleoperation.

Area of Science:

• Robotics
• Control Systems Engineering
• Human-Computer Interaction

Background:

• Teleoperation systems, particularly dual-master/single-slave configurations, are crucial for remote manipulation tasks.
• Existing control architectures often neglect nonlinear dynamics and time delays, limiting performance.
• Applications in surgical training and rehabilitation require robust and stable teleoperation frameworks.

Purpose of the Study:

• To propose a novel trilateral control architecture for dual-master/single-slave teleoperation.
• To address nonlinear dynamics and bounded variable time-delay in telemanipulator control.
• To ensure stability and effective coordination in teleoperation systems.

Main Methods:

• A weighted summation approach for slave motion control using dominance factors.
• Development and analysis of two controllers: Proportional with dissipative gains (P+d) and Proportional-Derivative with dissipative gains (PD+d).
• Lyapunov-like function for stability analysis of the dual-master/single-slave teleoperation framework.
• Modification of the PD+d controller for internet-based teleoperation, accounting for packet loss, data duplication, and swapping.

Main Results:

• The proposed trilateral control architecture ensures stability for both P+d and PD+d controllers through appropriate gain selection.
• Controllers effectively coordinate telemanipulator positions under free motion conditions.
• Stability of the dual-master/single-slave teleoperation is mathematically proven.
• The modified PD+d controller demonstrates effectiveness in handling internet communication challenges.

Conclusions:

• The novel trilateral control architecture provides a stable and effective framework for dual-master/single-slave teleoperation.
• The P+d and PD+d controllers, along with stability analysis, offer robust solutions for telemanipulator control.
• The adapted PD+d controller shows promise for real-world internet-based teleoperation applications, including surgical training and rehabilitation.