Abstract
This paper presents a novel wavelet kernel neural network (WKNN) with wavelet kernel function. It is applicable in online learning with adaptive parameters and is applied on parameters tuning of fractional-order PID (FOPID) controller, which could handle time delay problem of the complex control system. Combining the wavelet function and the kernel function, the wavelet kernel function is adopted and validated the availability for neural network. Compared to the conservative wavelet neural network, the most innovative character of the WKNN is its rapid convergence and high precision in parameters updating process. Furthermore, the integrated pressurized water reactor (IPWR) system is established by RELAP5, and a novel control strategy combining WKNN and fuzzy logic rule is proposed for shortening controlling time and utilizing the experiential knowledge sufficiently. Finally, experiment results verify that the control strategy and controller proposed have the practicability and reliability in actual complicated system.
Highlights
With the tightening supplies of energy and deterioration of environment pollution in the globe, the reliability, cleanliness, and security help the nuclear technology gain increasing traction
Simulations of wavelet kernel neural network (WKNN) and WKNN fractionalorder PID controller have been carried out aiming to examine performance and assess accuracy of the algorithm proposed in the previous sections, and it compares experimentally the performance of the WKNN algorithm and wavelet neural network (WNN) algorithm
To demonstrate the performance of WKNN algorithm, two simulations are conducted comparing with the WNN algorithm
Summary
With the tightening supplies of energy and deterioration of environment pollution in the globe, the reliability, cleanliness, and security help the nuclear technology gain increasing traction. The majority of marine nuclear power plants adopt integrated design. The nuclear reactor power control dominates the whole system of nuclear power plant and decides the security and reliability of the global device. The operation control strategy and controller design should accord with its particularities, which is convenient for power controlling and adjusting and ensures the steady operation. The reactor is a time delay system that is similar to other industrial systems. The time delay effect influences the system performance, which possibly brings oscillation and even destroys the instability [1, 2]. It is practically significant to research the time delay control of nuclear reactor
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