Defining Variables in MATLAB Transfer Function?

In summary, a transfer function in Matlab is a mathematical representation of the relationship between the input and output of a system. It can be created using the <code>tf</code> function and is important in control systems for modeling and analyzing system behavior. Transfer functions can be plotted using <code>bode</code>, <code>nyquist</code>, or <code>step</code> functions and are commonly used in control systems, signal processing, and communication systems in addition to electronic circuit design and analysis.
  • #1
AcesofSpades
10
0
I have the transfer function z+b/z^2-1.5*z+0.7

I want to write this to MATLAB so :

syms b
h=tf([1 b],[1 -1.5 0.7],1)

The problem is that it returns an error of the variable b.
How can I define it so that I can get an answer?
 
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  • #2
Please can anyone help? It is urgent!
 

What is a transfer function in Matlab?

A transfer function in Matlab is a mathematical representation of the relationship between the input and output of a system. It is typically used to describe the behavior of a linear, time-invariant system.

How do I create a transfer function in Matlab?

To create a transfer function in Matlab, you can use the tf function. This function takes in the coefficients of the numerator and denominator of the transfer function and returns a transfer function object that can be manipulated and analyzed.

What is the significance of the transfer function in control systems?

The transfer function is a crucial concept in control systems as it allows engineers to model and analyze the behavior of a system before implementing a control strategy. It provides insight into the system's stability, frequency response, and other important parameters.

Can I plot a transfer function in Matlab?

Yes, you can plot a transfer function in Matlab using the bode, nyquist, or step functions. These functions allow you to visualize the frequency response, stability, and step response of the transfer function, respectively.

What are some common applications of transfer functions in Matlab?

Transfer functions in Matlab are commonly used in various fields, such as control systems, signal processing, and communication systems. They are also used in the design and analysis of filters, equalizers, and other electronic circuits.

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