d2c

Convert model from discrete to continuous time.

Syntax

• sysc = d2c(sysd)
• sysc = d2c(sysd, method)
• sysc = d2c(sysd, 'prewarp', w0)

Input argument

• sysd - Discret-time dynamic system: LTI model.
• method - Discretization method: 'zoh', 'tustin', 'prewarp'
• w0 - prewarp frequency.

Output argument

• sysc - continuous-time model

Description

The function sysc = d2c(sysd) transforms a discrete-time dynamic system model sysd into a continuous-time model, employing zero-order hold on the inputs.

For instance, you can use sysc = d2c(sysd, method) to explicitly define the conversion method.

Example

A = [0.25, 0.5; 0, 0.1];
B = [1; 0];
C = [-1, 0];
sys = ss(A, B, C, 0, 0.2);
sysc = d2c(sys, 'zoh')

See also

c2d, ss.

History

Author

Allan CORNET