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With two-order Taylor expansion formula and the equivalent transformation of the radical function, the double square rooted slant range history of multiple receiver synthetic aperture sonar (SAS) can be highly approximated. Based on that, system transfer function in two-dimensional frequency domain, which is required for fast imaging algorithms, is derived. Using the derived transfer functions, this...
In this paper, an iterative design of feedforward and feedback controller is proposed for a building temperature regulation application. An iterative learning control (ILC) strategy is utilized to eliminate the influence of repetitive disturbance and an iteratively tuned feedback controller is applied to reduce the influence of non-repetitive disturbance components. With constraints from input saturation,...
A quad-rotor UAV is a typical under-actuated, strong coupled nonlinear system with parameter uncertainty and un-modeled disturbance. For the sake of tracking the desired trajectory, considering these characteristics, an Active Disturbance Rejection Control (ADRC) is introduced in this paper which divides the nested closed-loops control system into four independent channels. ADRC has the capacity of...
In this paper, we proposed a functional-link-based neural fuzzy network to improve the traditional TSK-type neural fuzzy network. Besides, an efficient evolutionary learning algorithm, called the Symbiotic Taguchi-based Modified Differential Evolution (STMDE), is proposed for the neural fuzzy networks design. Firstly, in order to avoid trapping in a local optimal solution and to ensure the searching...
This paper introduces an improved evolutionary algorithm based on the imperialist competitive algorithm. The original approach in the imperialist competitive algorithm has difficulty in implement practically with the increase of the dimension of the search spaces, as the ambiguous definition of the ??random angle?? in the process of optimization. Compare to the original algorithm, the proposed approach...
This paper presents the architecture design of a high efficient and non-memory Advanced Encryption Standard (AES) crypto core to fit WPAN security requirement. The proposed basis transformation approach from Galois Field (28) to Galois Field GF(((22)2)2) can significantly reduce the hardware complexity of the SubBytes Transformation (S-box). Besides, the on-the-fly key expansion function is used to...
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