Telekit: a bilateral, teleoperated platform for hands-on learning

Area of Science:

• Robotics and Control Systems
• Haptic Interfaces
• Educational Technology

Background:

• Bilateral teleoperation is crucial for remote interaction in fields like surgery and industry.
• Existing educational tools for teleoperation are often expensive or purely virtual, limiting practical learning.
• There is a need for accessible, hands-on systems to teach teleoperation concepts.

Purpose of the Study:

• To present the Telekit, a novel, low-cost bilateral teleoperation system.
• To evaluate the system's effectiveness in supporting practical education in teleoperation.
• To demonstrate the system's capability for both position tracking and haptic feedback.

Main Methods:

• The Telekit is an open-source system based on Stanford's Hapkit, featuring a gear-based transmission and a force-sensitive resistor.
• MATLAB was used for communication and control, implementing Position-Position (PP) and Position-Force (PF) control strategies.
• PP control included damping and friction compensation; PF control utilized integrated force feedback for stiffness rendering.

Main Results:

• Position-Position control achieved mean communication delays of 230 ms (low frequency) and 140 ms (high frequency), with tracking errors of 3.4° and 8.7°, respectively.
• Position-Force control allowed users to perceive distinct stiffness levels (0.17 N/°, 0.41 N/°, 0.68 N/°).
• The system demonstrated reliable functionality and meaningful haptic feedback across different operating frequencies.

Conclusions:

• The Telekit successfully demonstrates that a low-cost platform can provide effective position tracking and stiffness perception.
• The system offers an accessible solution for hands-on teleoperation education, bridging theory and practice.
• Telekit enhances practical learning opportunities in robotics and remote interaction.