Robotic products have become so much a part of our lives that it has become commonplace to encounter a robotic product at school, in a factory, at work, or on the street. Since engineers design and produce these devices, it would be appropriate to call this field "robotic engineering." Robotic engineering is an important part of modern engineering and directly includes many branches of science. These branches of science can be defined as electrical and electronics, computer, mathematics, and mechanical engineering. The interest in multi-robot systems (such as serial robots, parallel robots, mobile robots, and hybrid robots) contributes to the development of new theoretical research areas and new robotic products. This book covers the current developments in the multi-robot systems mentioned previously.