طراحی و شبیه سازی مدار مولد توابع عضویت فازی با پشتیبانی از متغیرهای زبانی کم توان
محورهای موضوعی : مدارهای مجتمع الکترونیک
حمید شهبازی
1
,
مژده مهدوی
2
,
مهدی زارع
3
1 - گروه الکترونیک، واحد شهر قدس، دانشگاه آزاد اسلامی، تهران، ایران
2 - گروه الکترونیک- واحد شهرقدس- دانشگاه آزاد اسلامی- تهران- ایران
3 - گروه الکترونیک، واحد شهر قدس، دانشگاه آزاد اسلامی، تهران، ایران
کلید واژه: زیر آستانه, مدار مولد تابع تواندار, کنترلر فازی, مدارات مجتمع,
چکیده مقاله :
در این مقاله، یک مدار کم توان برای تولید توابع تواندار در کاربردهای فازی ارائه شده است. مدار مولد توابع تواندار پیشنهادی متشکل از مدارهای مربع‌کننده، رادیکال‌گیر و ضرب‌کننده آنالوگ است. تمامی مدارها در ناحیه‌ی زیر آستانه طراحی شده‌اند تا حداقل توان مورد نیاز بدست آید. در ماژول مولد توان پیشنهادی از یک مدار فازی‌ساز منطبق و برای تنظیم شیب‌های توابع فازی از مدارات ضربکننده‌ی آنالوگ استفاده شده است. طراحی این مدار به گونه‌ای است که علاوه بر قابلیت‌های تنظیمات پیشین، قابلیت تنظیم شیب‌های بالارونده و پایین‌رونده را به صورت کاملا جداگانه دارد. برای قسمت مولد توان نیز از ضرب‌کننده‌های آنالوگ استفاده شده تا بتوان توان‌های دلخواه را به صورت پیوسته و با حداقل ورودی‌های کنترلی تولید نمود. ساختار پیشنهادی در تکنولوژی 35/0 میکرومتر ارائه شده و نتایج شبیه‌سازی نشان می‌دهد که در مقدار ولتاژ تغذیه 3/1 ولت، توان مصرفی برابر با 0036/0 میکرو وات و مقدار خطای 8/0 درصد است که بررسی بهترین اطلاعات موجود در این رده از ساختارها، بیانگر بهبود ساختار پیشنهادی از لحاظ خطا و توان مصرفی است.
In the present study, a low-power power function generator circuit is proposed for fuzzy applications. The proposed power function generator circuit consists of squaring, square root, and analog multiplier circuits. All the circuits are designed in the subthreshold region to achieve minimum power consumption. The proposed power generator module is based on a fuzzifier circuit, and the analog multiplier circuits are used to adjust the slopes of the fuzzy functions. Besides performing the mentioned adjustments, the proposed circuit can adjust the rising and falling slopes quite separately. Analog multipliers are used in the power generator part to generate desired powers continuously with minimum number of control inputs. The proposed structure is presented in 0.35 μm technology, and the simulation results show that at a supply voltage of 1.3 V, the values of power consumption and error are respectively equal to 0.0036 μw and 0.8%, indicating the improvement of the proposed structure in terms of error and power consumption compared to the best relevant structures in the literature.
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