The aim of this thesis is to develop a sensorless control strategy for an oscillating linear permanent magnet synchronious motor. The state-of-the-art sensorless methods are examined and their reliability to linear drives is discussed. Subsequently, an adaptive sliding mode concept is chosen to estimate the position of the mover. In the next step the concept is implemented and simulated in Matlab-Simulink. The results are discussed in detail. Finally the concept is implemented in the rapid-prototyping software X2C and evaluated on the real plant. The results confirm the functionality of the concept for an oscillating operation of the linear motor. The attainable accuracy of the stroke control is verified with different levels of load. The limitations of use of the investigated concept are shown.