“…Fractional calculus can provide clearer and more accurate description than the classical calculus methods without memory which is only a particular case. Furthermore, with the help of fractional-order calculus, we can obtain more accurate descriptions of the physical phenomena, such as electrical circuit [3,4], power system [5,6], signal processing [7], secure communication [8], bioengineering [9], and image encryption [10]. Second, the fractional-order can enhance the flexibility of parameters and reveal various unusual characteristics of the fractionalorder system and fractional-order controllers which remain concealed in the integer-order method.…”