dcgain2 (NGMV Control Toolbox)

NGMV Control Toolbox

dcgain2

DC gain of an LTI system with removed integrators/differentiators

Syntax

```
G = DCGAIN2(SYS)
```

Description

G = DCGAIN2(SYS) works like (and uses) dcgain routine from the Control System Toolbox except it neglects any poles or zeros at the origin (continous-time systems) or at 1 (discrete-time systems), in which cases the DC gain is zero or infinity.

Examples

s = tf('s');
dcgain2(1/(s+1))
ans =
 1
dcgain2(1/s/(s+1))
ans =
 1
dcgain2(s/(s+1))
ans =
 1

dcfe dio1