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Object-oriented programming (OOP) has been revolutionizing software development and maintenance. When applied to simulation of manufacturing systems, OOP also provides an opportunity for developing new ways of thinking and modeling. In this paper, we identify existing large-scale, persistent OOP-based research efforts focusing on manufacturing system(More)
Knowledge-based support for learning about physical devices is a classical problem in research on intelligent tutoring systems (ITS). The large amount of knowledge engineering needed, however, presents a major diiculty in constructing ITS's for learning how devices work. Many knowledge-based design systems, on the other hand, already contain libraries of(More)
In this proposed work a control of permanent magnet synchronous motor by using an artificial neural network and the motor is supplied by the voltage source inverter. The inverter gate pulses are controlled by using an artificial neural network. In the proposed system, the speed of the PMSM and the inverter output power are regulated. The system is based on(More)
Explanation is an important issue in building computer-based interactive design environments in which a human designer and a knowledge system may cooperatively solve a design problem. We consider the two related problems of explaining the system's reasoning and the design generated by the system. In particular, we analyze the content of explanations of(More)
Turbinia-Vyasa is a computer-based instructional system that trains operators to troubleshoot and diagnose faults in marine power plants. The simulator, Turbinia, is based on a hierarchical representation of subsystems, components, and primitives. Vyasa is the computer-based tutor that teaches the troubleshooting task using Turbinia. The simulator, an(More)
Numerous studies have been presented to eliminate dead-time effect. This paper will present a dead-time elimination scheme for a sinusoidal pulse width modulation (SPWM) controlled inverter. In comparison to using expensive current sensor, this method precisely determine the load current polarity by detecting the terminal voltage of the antiparallel diode(More)