E. Franchi

Università di Bologna, ARCES, Faculty Member

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Automatic synthesis of analog fuzzy controllers: a hardware and software approach

IEEE Transactions on Industrial Electronics, 1996

Abstruct-In applications where low cost is the primary concern, analog VLSI controllers are an op... more Abstruct-In applications where low cost is the primary concern, analog VLSI controllers are an option. In this paper a hardware and software integrated toolkit for development of analog controllers based on fuzzy logic is presented. The system is composed of a CMOS analog circuit whose inputloutput relationship can be programmed to synthesize various control functions. The value of the programmable parameters can be automatically computed by the software tool, assuming that the user specifies the controller expected behavior by means of linguistic and/or numeric information. A complete example of how fuzzy linguistic and numerical methodologies can be combined with more conventional techniques to synthesize a nontrivial controller is detailed down to measured data. A final discussion clarifies the main advantages of the fuzzy analog computation when it is supported with an appropriate software layer: nontrivial solutions to problems in which accuracy is not the primary concern can be easily synthesized and integrated into very small silicon areas with small power requirements.

format_quotePresents the first integrated hardware/software system for automatic synthesis of analog fuzzy controllers.format_quote

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A current-mode Piecewise-linear function approximation circuit based on Fuzzy-logic

Circuits and Systems, …, 1998

... 1041-1045 [3] J. Matas, L. Garcia de Vicuiia, M. Castilla, A Synthesis of Control Surfaces i... more

A current-mode circuit implementing chaotic continuous piecewise-affine Markov maps

This work is organized in two parts: first the statistical properties of piecewise-affine Markov ... more This work is organized in two parts: first the statistical properties of piecewise-affine Markov maps are recalled. Analytical methods for the computation of the invariant probability densities and the rate of mixing are presented relying on the approximation of the Perron-Frobenius operator with a suitable finite-dimensional operator. Then, a modular current-mode architecture for the implementation of continuous piecewise-affine Markov maps

A regular modular architecture for pipelined binary tree multipliers based on a sog structure

by E. Franchi and Nicola Testoni

Research in Microelectronics and Electronics, 2005 PhD, 2005

This paper presents an highly regular modular architecture for the design of pipelined binary tre... more This paper presents an highly regular modular architecture for the design of pipelined binary tree multipliers which is suited to be mapped onto a gate array device. The “tree of Wallace trees” architecture is employed in order to achieve a regular layout, while symmetrical sea-of-gate (SOG) enables for a reduced design time and an high predictability of line delay. Post-layout

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