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    초록·키워드

    In this paper, voltage-input current-output Membership Function Circuit (MFC) and Normalization Locked Loop (NLL) are proposed. They are useful building blocks for the current-mode analog fuzzy hardware. The voltage-input current-output MFC consists of one source coupled Operational Transconductance Amplifier (OTA). The MFC is used in the input parts of the analog fuzzy hardware system. The fuzzy hardware system can execute the singleton fuzzy control algorithm. In the algorithm, the weighted average operation is processed. When the weighted average operation is directly realized by analog circuits, a divider must be implemented. Here, the NLL operation circuit, which can process the weighted average operation without the divider, is implemented using one source coupled OTA. The proposed circuits were designed by using 2μm CMOS design rules and its operations were confirmed using SPICE simulations.

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      UCI(KEPA) : I410-ECN-0101-2009-569-013188980