The area of digital design is a well establish field that has received a new boost by the rapid development of programmable logic integrated circuits. Every year new device families are proposed by the manufactures, each family ...
We present an on -line laboratory, part of the e- learning system entitled INDIPHASO consisting of a set of web -based tools permitting remote configuration and test of hardware-software applications implemented using following XESS... more
We present an on -line laboratory, part of the e- learning system entitled INDIPHASO consisting of a set of web -based tools permitting remote configuration and test of hardware-software applications implemented using following XESS prototyping boards: XS40-005XL, XS40- 010E, XS95-108. The tools denoted as Remote XSTools (RXST) provide a set of web-based interfaces to the XESS XSTools. In this paper we present the extension of RXST in order to remote configure and test designs implemented using XESS XSA Boards. These boards differ from the aforementioned boards in that they do not have a microcontroller. Testing of designs using these boards is done by exploiting Xilinx Spartan II FPGA family boundary scan features.
The present paper introduce the work for developing a system based on web tools that can help students to perform laboratory works from outside the laboratory in order to improve their practical knowledge and skills. The system is... more
The present paper introduce the work for developing a system based on web tools that can help students to perform laboratory works from outside the laboratory in order to improve their practical knowledge and skills. The system is conceived to support a mixed conventional and e-learning environment for the introductory and advanced topics in digital design courses. The system is based on prototyping development board equipped with FPGA and CPLD programmable logic circuits.
In this paper we present and implement an Evolutionary Algorithm which determines an optimal decomposition of a specified finite state machine given as input. The main idea is to define and find a cost function that allow us to obtain the... more
In this paper we present and implement an Evolutionary Algorithm which determines an optimal decomposition of a specified finite state machine given as input. The main idea is to define and find a cost function that allow us to obtain the best implementation of states assignment for the resulting submachines in order to optimize the speed or area of the initial circuit.
We present a system for teaching different serial communication protocols used in instrumentation laboratory. The system is implemented using XESS prototyping boards (XSBoards) each one equipped with either a Xilinx FPGA or CPLD and an... more
We present a system for teaching different serial communication protocols used in instrumentation laboratory. The system is implemented using XESS prototyping boards (XSBoards) each one equipped with either a Xilinx FPGA or CPLD and an 8031 microcontroller (μC)[1] and several intelligent sensor types. The system was used for implementing and testing the IC, SPI, 1-Wire and other company specific protocols. The communication protocols were tested by implementing measuring systems where a sensor or a network of sensors is configured and controlled by a microcontroller.
The paper describes the experimental determination of the internal angle of a permanent- magnet synchronous electrical machine with axial air gap, using the results of the usual measurements of voltages, currents and torque in transient... more
The paper describes the experimental determination of the internal angle of a permanent- magnet synchronous electrical machine with axial air gap, using the results of the usual measurements of voltages, currents and torque in transient load operation. The particular propriety of the used test- bench is pointed out, as well the necessary improvements to reduce the method limitations. I. Introduction The most usual characteristics for the synchronous electrical machines are the angular ones. In the case of the theoretical characteristics validation, we need to get the experimental values of the internal angle in order to trace the experimental angular characteristics. But it is known that the classic ways to determine the internal angle of a synchronous machine are not very facile and precises. We propose to calculate the internal-angle, starting from the directly obtained acquired data of voltage, current and torque. If one considers that the angular speed is Ω + Ω = Ω d 0 (1) where...
The interior permanent magnet (IPM) synchronous machines have several desirable features for automotive, tools machines and residential drive applications. When operating over a wide speed range, the main problem is to assure a proper and... more
The interior permanent magnet (IPM) synchronous machines have several desirable features for automotive, tools machines and residential drive applications. When operating over a wide speed range, the main problem is to assure a proper and automatically set flux weakening. The paper presents a control structure of an IPM synchronous machine proper to be used also in the motoring regime, generating
