Compute steady-state value of MPC controller state for given inputs and outputs
x = trim(MPCobj,y,u)
The trim
function finds a steady-state
value for the plant state or the best approximation in a least squares
sense such that:
Here, xoff, uoff, and yoff are the nominal values of the extended state x, input u, and output y respectively.
x
is returned as an mpcstate
object.
Specify y
and u
as doubles. y
specifies
the measured and unmeasured output values. u
specifies
the manipulated variable, measured disturbance, and unmeasured disturbance
values. The values for unmeasured disturbances must be 0
.
trim
assumes the disturbance model and
measurement noise model to be zero when computing the steady-state
value. The software uses the extended state vector to perform the
calculation.