Absolute stability conditions are established for nonlinear NI systems with gradient nonlinear feedback preserving positive definite storage, generalizing prior linear NI results and enabling potential energy shaping.
Design and implementation of feedback resonance compensator in ha rd disk drive servo system: A mixed passivity, negative-imaginary and small- gain approach in discrete time
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Absolute Stability of Nonlinear Negative Imaginary Systems with Application to Potential Energy Shaping
Absolute stability conditions are established for nonlinear NI systems with gradient nonlinear feedback preserving positive definite storage, generalizing prior linear NI results and enabling potential energy shaping.