Core Intuition
A continuum segment behaves like a bendable arc. Change kappa for bend amount, phi for direction, and L for reach.
Continuum Robotics Primer
Bendable robots for spaces rigid arms cannot reach.
Continuum robotics studies flexible, continuously deformable robots used in domains like minimally invasive medicine, industrial inspection, and confined-space manipulation. This page gives you the core intuition before you jump into simulation and level-based practice.
Why It Matters
Medical navigation
Catheter-like robots can follow curved anatomy where rigid tools struggle.
Inspection and maintenance
Continuum forms can route through pipes, ducts, and cluttered cavities.
High dexterity in tight spaces
Body shape itself becomes a control variable, not just joint angles.
Control Objective
Reach target poses while satisfying collision and strain constraints. In practice, it is a shape-and-safety problem.
Learning Path
Start with one segment, add segments, then tackle obstacle-aware and precision tasks in the roadmap.
Key Terms You Will See Often
Keep this glossary nearby while using the simulator and roadmap. These terms appear repeatedly in controls, level goals, and AI coaching hints.
Continuum Robot
A robot with continuously bending structure, inspired by trunks, tentacles, and catheters instead of rigid joints.
Curvature (kappa)
How strongly a segment bends. Larger curvature means tighter bend radius.
Bend Direction (phi)
The orientation of the bending plane around the segment axis.
Arc Length (L)
The length of a segment measured along its centerline.
Constant Curvature Model
A common approximation where each segment is treated like a circular arc with fixed curvature.
Tip Pose
The final position and orientation of the robot end-effector.
Forward Kinematics
Computing robot shape and tip pose from parameters like kappa, phi, and L.
Workspace
All reachable points the robot tip can attain under constraints.
Redundancy
Multiple parameter combinations may produce similar tip positions.
Path Planning
Choosing a safe and feasible parameter trajectory to move around obstacles.
Strain / Safety Limits
Physical bounds on bend and extension to avoid material damage or unsafe motion.
Singularities
Configurations where small input changes can cause unstable, ambiguous, or ineffective motion, making control harder.