Questions: Compliant Manipulation and Force Control
1 questions to test your understanding
Score: 0 / 1
Question 1 Multiple Choice
A robot is assembling a part that must be inserted into a hole (peg-in-hole insertion). Without force feedback, the robot often fails (peg hits the side of the hole, gets stuck). With force control, the robot can succeed despite misalignment. Why does force control solve this problem?
AForce control makes the robot stronger so it can force the peg through
BWith force control, the robot feels sideways force when the peg contacts the hole's edge. Rather than pushing harder, it modulates motion to reduce the sideways force, essentially 'feeling' its way into the hole. The robot can also comply in the lateral direction, allowing slight misalignment to be corrected by deformation rather than jamming
CForce control is irrelevant; the issue is just imprecise positioning
DForce control only works for soft materials, not hard parts
This conceptual unification is why impedance control is taught as a foundational abstraction. Rather than learning separate position-control and force-control algorithms, a student learns impedance control and understands that both position and force control are special cases. This abstraction has power: it simplifies algorithm design and enables robots to switch between behaviors by just changing stiffness parameters.