Circuit Reduced Order Model (cktrom)
The circuit reduced order model is described by a set of partial differential equations in the form of:
where Eqn.(1) is the state equation, Eqn.(2) is the output equation, A is nxn matrix, B is nxm, C is mxn, and D is an mxm matrix. x is a vector of state variables. Input u is a vector of voltages at all the ports and output y is a vector of electric current at all the ports. The number of inputs is always equal to the number of outputs. The order of the terminals in the input must be consistent with the matrix equations. In the input file, the matrices A, B, C and D are in the form of long vectors with row order.
This device is not supported within altergroup.
Sample Instance Statement
rom3 (net11 0) cktrom a=[ -2.022852e+14 2.583012e+13 9.553125e+13 9.627727e+13 1.533971e+13 9.987851e+13 4.592012e+13 -1.671024e+14 2.296589e+13 -2.719915e+14 7.668472e+12 -1.564519e+14 8.543123e+13 3.395689e+13 -3.863150e+14 -1.101618e+14 -5.415116e+14 -2.303841e+14 9.627728e+13 -1.711915e+14 -1.001818e+14 -8.123120e+14 -2.272715e+14 -9.965181e+14 1.514961e+14 7.668372e+12 -6.415116e+14 -3.272715e+14 -2.852751e+15 -3.564466e+14 9.999851e+13 -1.761619e+14 -1.312841e+14 -8.967181e+14 -4.563456e+14 -4.068747e+15 ]
b=[3.366776e+06 5.932470e+05 -1.508475e+06 4.349182e+06 -3.128869e+06 -2.995677e+06 -2.831481e+06 2.708942e+06 -4.968876e+06 -3.338945e+06 -3.278564e+06 3.925648e+06 ]
c=[-3.111296e+06 1.593292e+06 3.324594e+06 3.083731e+06 5.887179e+06 3.766094e+06 -5.049263e+05 -4.275158e+06 3.035578e+06 -3.666385e+06 3.424639e+06 -3.832285e+06]
d=[1.254627e-01 0.000000e+00 0.000000e+00 1.236790e-01 ]
Instance Syntax
Name sink0 src0 [sink1] [src1] [sink2] [src2] [sink3] [src3] ... cktrom parameter=value ...
Instance Parameters
Operating-Point Parameters
Related Topics
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