jj_lin (Trim Model Toolbox)
Subsystem linearisation of a nonlinear ordinary differential equation system
(helper function of trimmod)
Syntax
jaco = jj_lin (sys, x_u, n_x, i_x_u, i_dy)
jaco = jj_lin (sys, x_u, n_x, i_x_u, i_dy, del_x_u)
Description
jaco = jj_lin (sys, x_u, n_x, i_x_u, i_dy) linearizes the system
with the name sys at the operating point, that is defined by the
generalized input vector x_u.
n_x is the length of the original state vector x.
It is needed for the dissassembling of the x_u vector in the
parameter list of the system calls.
The matrix jaco only contains the subsystem defined by the index
vectors i_x_u and i_d_y.
jaco = jj_lin (sys, x_u, n_x, i_x_u, i_dy, del_x_u) additionally
allows the specification of the perturbation levels del_x_u to be
used for the gradient calculations.
See Also
trimmod Main trim function
jj_trim
Helper function, that does
the actual trimming
trim
The trim
function of the Mathworks
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