الفهرس 
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Abstract
DC motor systems have played an important role in the improvement and development of the industrial revolution, making them the heart of different applications beside AC motor systems. Therefore, the development of a more efficient control strategy that can be used for the control of a DC servomotor system, and a well defined mathematical model that can be used for off line simulation are essential for this type of systems Servomotor systems are known to have nonlinear parameters and dynamic factors as follows : In this work, controllers of type proportional, integral and derivative are use the implementation of control system: A) The first is used to build a model that simulates the function of DC servo motor system. B) The second implementation is performed practically in the laboratory using a system controller proportional integral - derivative, under different load conditions and the system proposed will be able to deal with the parameters nonlinear factors and the dynamics of the participants in the system servomotor original, and thus generate the proper control of the speed of the output Simulation using MATLAB tools is show the final results, and compare them with the practical results.