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Chapter 1  Overview of Rltool for Scilab

Welcome to help pages of RLTOOL, version 1.7. The latest details about RLTOOL are available at:

http://wwwa.mpi-magdeburg.mpg.de/people/ishan/scilab/rltool.htm


If you are using Rltool, you are requested to send a e-mail with the subject ``rltool'' to ishan.pendharkar@gmail.com. Your e-mail address will  be kept confidential.

1.1  Description

Rltool for Scilab is a graphics based tool for designing compensators for SISO continuous plants.

1.2  Targetted users

The intention behind developing this package is to provide a free and easy to use tool for students taking a first course in control engineering. Learning is more fun if computer based teaching is used to supplement classroom lectures. It is intended to make Rltool for Scilab as simple and user friendly as possible and yet have some powerful and innovative features.

1.3  Features

  1. Handle single input single output (SISO) continuous time transfer functions.

  2. Choose between Time Domain and Frequency Domain Design.

  3. Edit of poles and zeros at the click of a mouse.

  4. View various openloop and closed loop plots.

  5. Save and Load plants as required.

1.4  How to install Rltool for Scilab

1.4.1  For Linux users

I assume that you have obtained the file rltool1.*.tar.gz and have saved it at the location ``PATH'' on your computer. For example, I have downloaded the file in my home directory /home/ishan/ so PATH=/home/ishan

  1. Unzip the zipped file. This has generated a directory called rltool in my home directory.

  2. Start scilab

  3. At the scilab prompt, type
    --> exec PATH/rltool/builder.sce (in my case exec /home/ishan/rltool/builder.sce)
    you need to do this only ONCE. This ``compiles'' the *.sci files and generates binary files.

  4. To ``load'' rltool into Scilab, type the following at the Scilab prompt
    --> exec PATH/rltool/loader.sce
    you will need to ``load'' rltool every time you start a FRESH scilab session, or issue an explicit ``clear'' instruction at the Scilab prompt

  5. Type rlt() to start using rltool

  6. If you are the root, you may want to ``build'' rltool once so that multiple users can access it simultaneously.

1.4.2  For Windows users

I assume that you have obtained the file rltool1.*.tar.gz and have saved it at the location ``PATH'' on your computer. For example, I have downloaded the file in my home directory C:\ishan , hence PATH = C:\ishan

  1. Unzip the zipped file.  This has generated a directory called rltool in my home directory.

  2. Start scilab

  3. At the scilab prompt, type
    --> exec PATH\rltool\builder.sce (in my case C:\ishan\rltool\builder.sce)
    you need to do this only ONCE. This ``compiles'' the *.sci files and generated binary files.

  4. To ``load'' rltool into Scilab, type the following at the Scilab prompt
    --> exec PATH\rltool\loader.sce
    you will need to ``load'' rltool every time you start a FRESH scilab session, or issue an explicit ``clear'' instruction at the Scilab prompt

  5. Type rlt() to start using rltool

  6. If you are the administrator, you may want to ``build'' rltool once so that multiple users can access it simultaneously.


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