The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Method for ranking interval-valued intuitionistic fuzzy numbers is of key duty to multicriteria decision-making. Existing ranking methods using score function and accuracy function can not give sufficient information about alternatives and will demonstrate the situation of difficult decision or wrong decision in some cases. In this paper, a deviation function, considering the variance of the hesitancy...
A novel score function is presented by taking into account the expectation of the hesitancy degree of interval-valued intuitionistic fuzzy sets (IVIFSs). And a deviation function is defined considering the variance of the hesitancy degree of IVIFSs. A new method for ranking interval-valued intuitionistic fuzzy numbers is then established based on the score function and deviation function. The proposed...
This paper presents a novel jam fault diagnosis method for electro-hydraulic executive device of steam turbine based on electro-reflection and interval-valued intuitionistic fuzzy sets (IVIFSs) theory. Theoretical analysis and modeling research are conducted to reveal the relationship between jam fault and the peak-to-peak value of the oscillation current (PVOC). Then we constructed a proportional...
This paper presents a novel fault diagnosis method of turbine based on interval-valued intuitionistic fussy sets (IVIFSs) theory. In this paper, the concept of IVIFS is introduced, and the distance between two IVIFSs is defined. Then, the similarity degree between the detecting sample and the knowledge of system fault is evaluated in the fault diagnosis of turbine vibration by means of the similarity...
The jam fault of electro-hydraulic servo valve in steam turbine EHC (electro-hydraulic control) system sadly affects the security of unit. For normal detection method, due to the inaccuracy of non-fault characteristic parameter of object as well as the issue of the reliability and accuracy of sensor itself, the sensitivity and reliability of result can't be guaranteed. This paper presents a sensor-less...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.