Vertical control for a mechanical model of the one-legged hopping machine
1992
A vertical control algorithm is proposed for a one-legged hopping machine. It differs from previous control algorithms in three ways: (i) it uses a near inverse of the machine's dynamics; (ii) it uses discrete-time output feedback, namely, the hopping heights of previous cycles (rather than continuous full state feedback); and (iii) it uses a more realistic model of the hopping machine mechanical components. Numerical simulations are used to assess the ability of the controlled machine to track a piecewise constant height trajectory. Specifically, the sensitivity of the design to deviations in the hopping machine's parameters is studied. >
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