New tools are brought about to facilitate industrial applications by the ever increasing human science. Different types of cranes are used in medium and large scale industries, harbors, steel industry, power plants etc, to traort heavy objects rapidly and conveniently. In the recent decades extensive research has been conducted in order to solve the problems and optimize crane operation. Load swings during traortation and target load placing is one of the main concerns in crane applications. These sways put the personals safety at risk, corrupts the mechanical structures and lowers load positioning accuracy, so the swings should be confined in a definite range that ensures enough accuracy. The methods that measure swing angle using a camera vision and processing unit constitute a major part of the investigations performed on this case. These methods are expensive and are not economical for small industries. In this thesis a model of cranes under real working conditions will be presented. Three methods of load swing estimation will be proposed using velocity sensors and load cells. Feedback controller is used to damp the load swings. In order to control electrical drives vector control method is used.
