%0 Electronic Chapter %T Fuzzy relation %K n-ary fuzzy relations %K two-dimensional fuzzy sets %K fuzzy projection %K fuzzy extension principle %B Fuzzy Logic Control in Energy Systems with design applications in MATLABĀ®/SimulinkĀ® %D 2017 %I Institution of Engineering and Technology %P 89-126 %R doi:10.1049/PBPO091E_ch4 %S Energy Engineering %U https://digital-library.theiet.org/;jsessionid=dfbhe7t1ogtop.x-iet-live-01content/books/10.1049/pbpo091e_ch4