Human beings are fascinating creatures. Their behavior and appearance cannot be compared with any other living organism in the world. They have two distinct features with compared to any other living being; unique physical nature and emotions / feelings. Anybody who studies on humans or tries to construct human like machines should consider these two vital facts. When robots are interacting with humans and other objects, they certainly have a safe distance between them and the object. Some of the problems in concern are how can this distance be optimized when interacting with humans; will there be any advantages over achieving this; will it help to improve the condition of robots; can it be a mere constant distance; how will the humans react, etc. In order to "humanize" robots, they (robots) should also have certain understanding of such emotions that we, humans have. In this research project, authors are trying to "teach" one such human understanding, commonly known as "personal space" to autonomous mobile robots.