The Experts below are selected from a list of 210 Experts worldwide ranked by ideXlab platform
R.m.k Yeung - One of the best experts on this subject based on the ideXlab platform.
-
Optimal power control system of a research Nuclear Reactor
Nuclear Engineering and Design, 2003Co-Authors: Fuyu Zhao, K.c Cheung, R.m.k YeungAbstract:The power control system is a key control system for a Nuclear Reactor, which directly concerns the safe operation of a Nuclear Reactor. Much attention is paid to the power control system performance of Nuclear Reactor in engineering. The designers put a high value upon design of an optimal power control system. In this paper, a design method is applied to the design of power control system. According to the optimal control theory, an objective function, quadratic performance index with weight factors is proposed. Then, the objective function is transformed into frequency domain form by use of Paserval's theorem. In frequency domain, an optimal transfer function can be obtained at the lowest value of objective function. The system with optimal transfer function has an optimal performance. The transfer function of the power control system is derived from a typical research Nuclear Reactor. Using the state feedback theory, the transfer function is synthesized to the optimal transfer function. The simulative results with the optimal controller and with a conventional controller show that the performance of the optimal power control system is largely improved on dynamic characters. The method applied here not only can be used for research Nuclear Reactor but also can be easily extended to pressurized water Reactor power plant and other fields.
Wang Yuanlong - One of the best experts on this subject based on the ideXlab platform.
-
The robustness analysis of Nuclear Reactor control system
2012 24th Chinese Control and Decision Conference (CCDC), 2012Co-Authors: Wang YuanlongAbstract:Here, the robustness of the Nuclear Reactor control system is discussed by its computer simulation results which are obtained respectively from the analysis without the external control system and the analysis with the external control system. After this, the simulation tests both with the classical PID control and with the advanced PID control are also given. And then, the comparative analysis on the robustness of the Reactor control system is shown. Finally, the useful approach improving the robustness of the Nuclear Reactor control system is provided, too.
Zhao Yan-qing - One of the best experts on this subject based on the ideXlab platform.
-
Nuclear Reactor Pressure Vessel Quenching Using Plate
Journal of Iron and Steel Research, 2011Co-Authors: Zhao Yan-qingAbstract:Heat treatment using plate for Nuclear Reactor pressure vessel was introduced.Using different kinds of heat treatment processes,the chemical composition of steel was determined,microstructure and mechanical properties of steel under different quenching temperatures were studied and proper heat treatment solution of steel was finally established.The results show that the toughness of low alloy high strength steel 16MnD5,18MnD5,20MnD5 and SA533 are matched well,whose properties are fully in compliance with regulatory requirements so that the situation of plate for Nuclear Reactor pressure vessel plate dependent on import for long-term has been changed.The products are mainly used for manufacturing key parts of Nuclear Reactor pressure vessel,which are Nuclear steam generator,regulator,pressure vessel head,supporting elements and pressure boundary.
Feng Jun-ting - One of the best experts on this subject based on the ideXlab platform.
-
A Digitalized Power Control System for Nuclear Reactor
Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms, 2004Co-Authors: Feng Jun-tingAbstract:As one of key control systems in the Nuclear Reactor, the Nuclear Reactor power control system is complicated, and requires very high level of reliability. Usually the power control systems in old Reactors are implemented by analogy technology, but the digitalized one will be more powerful and advantageous, and of course be difficult. The paper presents one solution for the digitalized power control system of an experimental Reactor, and its methodologies, including the adoption of commercial computer hardware, redundant and interlocked software, strict quality assurance, final verification via partial practicality simulation experiments, with the intention to prove the digitalized power control system is practical, credible, reliable, and economical.
A.s. Heger - One of the best experts on this subject based on the ideXlab platform.
-
Design of a Nuclear Reactor cooperative controller
Transactions of the American Nuclear Society, 1991Co-Authors: N.k. Alang-rashid, A.s. HegerAbstract:This paper describes the development of a fuzzy logic controller software package and explores the feasibility of its use in Nuclear Reactor operation. The controller complements Reactor operator actions, and the operators can override the controller decisions. Techniques of providing learning capability to the controller are also being investigated to improve the reasoning and control skill of the controller. The fuzzy logic controller is implemented in C language and its overall structure is shown. The heart of the systems consists of a fuzzifier, a rule interpreter, and a defuzzifier. The controller is designed as a stand-alone package that can be interfaced to a simulated model of a Nuclear Reactor. Since no model is an accurate representation of the actual process being modeled, some tuning must be performed to use the controller in an actual Reactor. This is accomplished using the learning feature of the controller.
