Search


Information
ICMST-Shenzhen 2016
Nov 1 - 4, 2016
Shenzhen, China
(EXIT THIS PAGE)
ICMST-Kobe 2014
Nov 2(Sun) - 5(Wed), 2014
Kobe, Japan
Nuclear Regulation Authority Outline of the New Safety Standards for Light Water Reactors for Electric Power Generation
For Public Comment
Outline of New Safety Standard (Design Basis)
For Public Comment
New Safety Standards (SA) Outline (Draft)
For Public Comment
Outline of New Safety Standard(Earthquake and Tsunami)(DRAFT)
Issues
 

Vol.8 No.2(Aug-25)
Vol.8 No.1(May-25)
Vol.7 No.4(Feb-25)
Vol.7 No.3(Nov-25)
Vol.7 No.2(Aug-25)
Vol.7 No.1(May-25)

< Other Issues

 

Occasional Topics
OTjapan Measures for Tsunami Striking Nuclear Power Station in Japan
Special Article: The Great Tohoku Earthquake (1)
OTjapan The Tragedy of “To Be” Principle in the Japanese Nuclear Industry
EJAMOT_CN3_Figure1_The_outside_view_of_CEFR OTChinaPlanning and Consideration on SFR R&D Activities in China
< All Occasional Topics

Featured Articles
EJAM7-3NT72 A New Mechanical Condition-based Maintenance Technology Using Instrumented Indentation Technique
EJAM7-3NT73 Survey robots for Fukushima Daiichi Nuclear Power Plant

JSM
Contacts
(EJAM): ejam@jsm.or.jp
(JSM): secretariat@jsm.or.jp
HP: http://www.jsm.or.jp
(in English)

 

Vol.9 No.2previous AASP17 (125-126-127-128-129-130-131-132-133-134-135-136-137-138-139-140-141-142) NT85

Academic Articles
Regular Paper Vol.9 No.2 (2017) p.132 - p.137
 

Reactivity Measurement Based on a New Finite-Time Convergent 2-Order Differentiator

 
Zhe Dong1,*
 

1 Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Tsinghua University, Beijing 100084, China

 
Abstract
Reactivity measurement is crucial in monitoring nuclear reactors. Proper estimation of neutron flux derivative is one of the key to improve the reactivity estimation based on inverse kinetics (IK) method. Signal differentiation is widely used in system monitoring and control. The key problem in differentiator design is how to obtain a satisfactory tradeoff between differentiation exactness and robustness to uncertainties and noises. By proposing a new finite-time stabilizer for 2-order integrator chain, a new finite-time-convergent 2-order differentiator with bounded estimation error is developed. This differentiator is then applied to reactivity measurement through solving the IPK equation. Numerical simulation results not only verify the theoretical results but also show its satisfactory performance.
 
Keywords
Reactivity measurement, differentiator, finite-time stability
 
Full Paper: PDF
Article Information
Article history:
Received 6 November 2016
Accepted 27 April 2017