Transfer Function of a system

What are the properties of transfer function.

and is the following a valid transfer function:

sys = tf([1],[0.2 0.4 0.3]);

Answer 1

[Walter Roberson]

>> sys = tf([1],[0.2 0.4 0.3]);
>> properties(sys)
Properties for class tf:
    Numerator
    Denominator
    Variable
    IODelay
    InputDelay
    OutputDelay
    Ts
    TimeUnit
    InputName
    InputUnit
    InputGroup
    OutputName
    OutputUnit
    OutputGroup
    Notes
    UserData
    Name
    SamplingGrid

There are also a few hidden properties such as OutputName_ that are used for internal purposes.

[Muhammad Awais]

Thanks sir But is the stated TF is valid or not. ??

[Walter Roberson]

Yes it is. Some people prefer to normalize so that the leading term of the denominator is 1, which can be done by dividing top and bottom by the leading coefficient (0.2 in this case)

[Muhammad Awais]

This is the TF of model tall structure and I want to implement PID and Fuzzy controllers for vibration control. PID has been implemented successfully but the results of fuzzy are not being achieved properly. Sir, If you can Guide me in this regard please. I've used the inclination angle (-15 to 15) and its rate of change (-3 to 3) as the 2 fuzzy inputs and motor angle(-45 to 45) as output.

[Walter Roberson]

Sorry, I do not have any experience in control systems.