Java Simulations of Embedded Control Systems

In English This paper introduces a new Open Source Java
library suited for the simulation of embedded control systems.
The library is based on the ideas and architecture of TrueTime,
a toolbox of Matlab devoted to this topic, and allows Java
programmers to simulate the performance of control processes
which run in a real time environment. Such simulations can
improve considerably the learning and design of multitasking
real-time systems. The choice of Java increases considerably
the usability of our library, because many educators program
already in this language. But also because the library can
be easily used by Easy Java Simulations (EJS), a popular
modeling and authoring tool that is increasingly used in the
field of Control Education. EJS allows instructors, students,
and researchers with less programming capabilities to create
advanced interactive simulations in Java. The paper describes the
ideas, implementation, and sample use of the new library both for
pure Java programmers and for EJS users. The JTT library and
some examples are online available on http://lab.dia.uned.es/jtt.