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Table 3 Comparison between discrete mechanical and robotic systems

From: Analytical methodology for the analysis of vibration for unconstrained discrete systems and applications to impedance control of redundant robots

Mechanical vibration

Robotic impedance control

Rigid body mode

Zero potential energy change

RB

ZP

\(\frac{1}{2}\mathbf{q }_{{RB}}^{T}\mathbf{K }\,\mathbf{q }_{{RB}}=0\)

\(\frac{1}{2} \mathbf{q }_{{{ZP}}}^{T} \mathbf{K }\,\mathbf{q }_{{{ZP}}}= 0\)

Non rigid body mode

Non zero potential energy change

NRB

NZP