mdof.sysid

mdof.sysid(inputs, outputs, **options)

State space system realization (A, B, C, D) from input and output arrays.

Parameters:

• inputs (array) – input time history. dimensions: \((q,nt)\), where \(q\) = number of inputs, and \(nt\) = number of timesteps

• outputs (array) – output response history. dimensions: \((p,nt)\), where \(p\) = number of outputs, and \(nt\) = number of timesteps

• method (string, optional) – system identification method. default is “srim”, other options are “okid-era” and “okid-era-dc”.

• decimation (int, optional) – decimation factor. default: 8

Returns:

system realization in the form of state space coefficients (A, B, C, D)

Return type:

tuple of arrays