拉特飛?扎德（Lotfi A. Zadeh，1921～ ）美國(guó)自動(dòng)控制專家，美國(guó)工程科學(xué)院院士。1921年2月生于蘇聯(lián)巴庫(kù)。 1949年獲哥倫比亞大學(xué)電機(jī)工程博士?，F(xiàn)任伯克利加利福尼亞大學(xué)電機(jī)工程與計(jì)算機(jī)科學(xué)系教授。因發(fā)展模糊集理論的先驅(qū)性工作而獲電氣與電子工程師學(xué)會(huì)(IEEE)的教育勛章。

扎德在控制理論方面有重要貢獻(xiàn)。

• 1949年他在關(guān)于時(shí)變網(wǎng)絡(luò)頻率分析的博士論文中引入的時(shí)變變換函數(shù)的概念，后來(lái)成為線性時(shí)變系統(tǒng)分析的工具。

• 1950～1952年他和J.拉加齊尼合作，推廣了維納預(yù)測(cè)理論，在設(shè)計(jì)有限存儲(chǔ)濾波器和預(yù)測(cè)器中得到廣泛應(yīng)用。他們發(fā)展的采樣控制系統(tǒng)的Z變換逼近,成為分析這類系統(tǒng)的標(biāo)準(zhǔn)方法。

• 1953年他給出一種設(shè)計(jì)非線性濾波器的新的逼近方法。

• 1963年他和 C.A.德舍爾合著的《線性系統(tǒng)的狀態(tài)空間理論》是該領(lǐng)域的經(jīng)典著作。書中介紹的狀態(tài)空間逼近已成為最優(yōu)控制中的標(biāo)準(zhǔn)工具，廣泛用于工業(yè)機(jī)器人和社會(huì)經(jīng)濟(jì)系統(tǒng)。

• 1965年，扎德在《信息與控制》雜志第8期上發(fā)表《模糊集》的論文,引起了各國(guó)數(shù)學(xué)家和自動(dòng)控制專家們的注意。他通過(guò)引進(jìn)模糊集（邊界不明顯的類）提供了一種分析復(fù)雜系統(tǒng)的新方法。他提出用語(yǔ)言變量代替數(shù)值變量來(lái)描述系統(tǒng)的行為，使人們找到了一種處理不確定性的方法，并給出一種較好的人類推理模式。20年來(lái)他所開(kāi)創(chuàng)的模糊集領(lǐng)域得到了迅速發(fā)展。

Lotfi A. Zadeh (b. 4 February 1921 in Baku, Azerbaijan) was educated in Iran and USA, having degrees from Tehran University, MIT, and Columbia University. Since 1959, Dr. Zadeh has been and currently is a member of the faculty of the Computer Science Division, Department of EECS, University of California at Berkeley. In addition, he is serving as the Director of BISC (Berkeley Initiative in Soft Computing). He held visiting appointments at the Institute for Advanced Study, Princeton, NJ; MIT, Cambridge, MA; IBM Research Laboratory, San Jose, CA; AI Center, SRI International, Menlo Park, CA; and the Center for the Study of Language and Information, Stanford University.

Lotfi Zadeh has received numerous awards, including the IEEE Medal of Honor, the IEEE Education Medal, the IEEE Richard W. Hamming Medal, the ACM Allen Newell Award, the Norbert Wiener Award of the IEEE Systems, Man and Cybernetics Society, the Honda Prize, the Okawa Prize, the Grigore Moisil Prize, the V. Kaufmann Prize, the B. Bolzano Medal of the Czech Academy of Sciences, the Nicolaus Copernicus Medal of the Polish Academy of Sciences, the Silicon Valley Engineering Hall of Fame and the Heinz Nixdorf MuseumsForum Wall of Fame. He is a recipient of twenty-six honorary doctorates, and is a member of the National Academy of Engineering. In addition, he is a foreign member of the Russian Academy of Natural Sciences, the Finnish Academy of Sciences, the Polish Academy of Sciences, the Korean Academy of Science & Technology and the Bulgarian Academy of Sciences.

Dr. Zadeh created a new field of mathematics - fuzzy set theory and fuzzy logic, which have found numerous applications ranging from consumer electronics to medicine and natural languages. His current research is focused on fuzzy logic, computing with words, and soft computing.