Single actuator wave-like robot (SAW): design, modeling, and experiments

Area of Science:

• Robotics
• Bioinspired Engineering
• Mechanical Engineering

Background:

• Traditional robots often require complex designs with multiple actuators.
• Bioinspired locomotion offers potential for novel movement strategies.
• Minimalistic designs can lead to simpler, more efficient robotic systems.

Purpose of the Study:

• To present a novel single-actuator wave-like robot.
• To explore bioinspired locomotion using a minimalistic mechanical design.
• To develop and validate a kinematic model for predicting robot speed.

Main Methods:

• Designed and built a wave-like robot utilizing a single motor.
• Developed a kinematic model to analyze the robot's two-dimensional motion.
• Experimentally tested multiple robot versions of varying sizes.

Main Results:

• The robot successfully moves forward or backward by producing an advancing sine wave.
• Experimental results closely matched predictions from the kinematic model.
• The larger robot version achieved a top speed of 57 cm/s and demonstrated vertical climbing.

Conclusions:

• A single-actuator wave-like robot can achieve efficient locomotion and vertical climbing.
• The developed kinematic model accurately predicts the robot's performance.
• Optimized parameters allowed the robot to exceed its wave speed.