Path: Common/Estimation
% Nonlinear estimator spring model. Has a linear and cubic spring plus a damper. -------------------------------------------------------------------------- Form: d = RHSPartialNLSpring; % data structure a = RHSPartialNLSpring( x, t, d ) -------------------------------------------------------------------------- ------ Inputs ------ x (2,1) State [position;velocity] (not used) t (1,1) Time (not used) d (.) Data structure .kL (1,1) Linear spring coefficient .kC (1,1) Cubic spring coefficient .c (1,1) Damping coefficient .f (1,1) Force .x0 (1,1) Nominal x .m (1,1) Mass ------- Outputs ------- a (2,2) State transition matrix --------------------------------------------------------------------------
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