Pearl is in fact the name of a (not-very-elegant) programming language you may use for robotics. My first contact with Perl was indeed, when I learned Perl and then came into the course, where they expected people to know Pearl. Man - I nearly collapsed. Then - they allowed to program either in C or Pearl.
Me and a guy took the C, the rest of the class Pearl, we finished 90% of the exercises, the Pearl-people 30-40%. So you really aren't interested in this language. :-)
Oh well - if you are: Look here