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Create Tunable Low-Pass Filter

This example shows how to create a low-pass filter with one tunable parameter a:

$$F = \frac{a}{{s + a}}$$

You cannot use tunableTF to represent F, because the numerator and denominator coefficients of a tunableTF block are independent. Instead, construct F using the tunable real parameter object realp.

Create a tunable real parameter with an initial value of 10.

a = realp('a',10);

Use tf to create thetunable filter F.

F = tf(a,[1 a]);

F is a genss object which has the tunable parameter a in its Blocks property. You can connect F with other tunable or numeric models to create more complex control system models. For example, see Control System with Tunable Components.

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