MATLAB MODEL PREDICTIVE CONTROL TOOLBOX - S Specifiche Scaricare il pdf (Pagina 34)

2 Building Models

2-22

opspec = operspec('CSTR_OpenLoop');

opspec = addoutputspec(opspec,'CSTR_OpenLoop/CSTR',2);

opspec.Outputs(1).Known = true;

opspec.Outputs(1).y = 2;

op1 = findop('CSTR_OpenLoop',opspec);

Operating Point Search Report:

---------------------------------

Operating Report for the Model CSTR_OpenLoop.

(Time-Varying Components Evaluated at time t=0)

Operating point specifications were successfully met.

States:

----------

(1.) CSTR_OpenLoop/CSTR/C_A

x: 2 dx: -4.6e-12 (0)

(2.) CSTR_OpenLoop/CSTR/T_K

x: 373 dx: 5.49e-11 (0)

Inputs:

----------

(1.) CSTR_OpenLoop/Coolant Temperature

u: 299 [-Inf Inf]

Outputs:

----------

(1.) CSTR_OpenLoop/CSTR

y: 2 (2)

The calculated operating point is C_A = and T_K = 373 K. Notice that the

steady-state coolant temperature is also given as 299 K, which is the nominal value of

the manipulated variable of the MPC controller.

To specify:

• Values of known inputs, use the Input.Known and Input.u fields of opspec

• Initial guesses for state values, use the State.x field of opspec

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MATLAB MODEL PREDICTIVE CONTROL TOOLBOX - S Specifiche Pagina 34