Function File: dat = iddata (y)

Function File: dat = iddata (y, u)

Function File: dat = iddata (y, u, tsam, …)

Function File: dat = iddata (y, u, [], …)

Create identification dataset of output and input signals.

Inputs

y

Real matrix containing the output signal in time-domain. For a system with p outputs and n samples, y is a n-by-p matrix. For data from multiple experiments, y becomes a e-by-1 or 1-by-e cell vector of n(i)-by-p matrices, where e denotes the number of experiments and n(i) the individual number of samples for each experiment.

u

Real matrix containing the input signal in time-domain. For a system with m inputs and n samples, u is a n-by-m matrix. For data from multiple experiments, u becomes a e-by-1 or 1-by-e cell vector of n(i)-by-m matrices, where e denotes the number of experiments and n(i) the individual number of samples for each experiment. If u is not specified or an empty element [] is passed, dat becomes a time series dataset.

tsam

Sampling time. If not specified, default value -1 (unspecified) is taken. For multi-experiment data, tsam becomes a e-by-1 or 1-by-e cell vector containing individual sampling times for each experiment. If a scalar tsam is provided, then all experiments have the same sampling time.

…

Optional pairs of properties and values.

Outputs

dat

iddata identification dataset.

Option Keys and Values

’expname’

The name of the experiments in dat. Cell vector of length e containing strings. Default names are {'exp1', 'exp2', ...}

’y’

Output signals. See ’Inputs’ for details.

’outname’

The name of the output channels in dat. Cell vector of length p containing strings. Default names are {'y1', 'y2', ...}

’outunit’

The units of the output channels in dat. Cell vector of length p containing strings.

’u’

Input signals. See ’Inputs’ for details.

’inname’

The name of the input channels in dat. Cell vector of length m containing strings. Default names are {'u1', 'u2', ...}

’inunit’

The units of the input channels in dat. Cell vector of length m containing strings.

’tsam’

Sampling time. See ’Inputs’ for details.

’timeunit’

The units of the sampling times in dat. Cell vector of length e containing strings.

’name’

String containing the name of the dataset.

’notes’

String or cell of string containing comments.

’userdata’

Any data type.

Package: control