Intelligent algorithm for PM dc drive

This paper presents the digital implementation in real-time of the Haar algorithm as a controller for PM/dc motor. Based on motor characteristics the structure of a new Haar algorithm is developed. This algorithm is based on lifting scheme method. The lifting scheme is often considered as a generalization of wavelet theory, and the domination of second generation wavelet was introduced. The performance of the proposed controller is investigated both theoretically and experimentally. MATLAB/Simulink, the dynamic system simulation, is used for the simulation. For the experimental investigation, a complete system is designed. An auto-transformer 220/80 volts is used. A single-phase half-controlled bridge is designed to control the armature voltage. A card A/D and D/A, 12 bits is used as a conversion from tacho-generator and from PC to the control circuit. The personal computer used is Pentium III, Visual C is the language of the software implementation. The proposed controller is very simple in software implementation. It has been found robust for use in high performance industrial drive applications. There exists an excellent agreement between the simulated and experimental results.