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This paper presents a generic technique for analyzing subsynchronous torsional interaction (SSTI) between series capacitors and multi-mass shaft system in steam turbinegenerators. The proposed method focuses on application of the method in large-scale power systems where the SSTI study is to be carried out for large number of generators, different compensation levels, and various contingencies. The...
This paper focus on the cold rolling force prediction for copper strip based on BPNN and Genetic Algorithm. Analysis and comparison with the precision based on Bland-Ford formula, the results show that the new rolling force prediction had higher accuracy.
Polydimethylsiloxane (PDMS) is one of the most used materials in bio-applications. However, previous works were mainly focused on mechanical aspects. In this paper we presented a practical and efficient approach to enhance the electrical properties of PDMS by using conducting polymer nanowires (CPNWs). The nanowires were synthesized using the template method and added in PDMS to form nanocomposites...
Conducting polymers (CP) are promising electro-active polymers and have been increasingly used in actuator applications. This paper is intended to characterize the electromechanical correlation between the current input and curvature output of polypyrrole trilayer actuators. A mathematical model was developed using the multilayer bending theory and an analogy between thermal expansion and ion insertion...
This paper considers the problem of joint blind source separation (J-BSS), which appears in many practical problems such as blind deconvolution or functional magnetic resonance imaging (fMRI). In particular, we establish the necessary and sufficient conditions for the solution of the J-BSS problem by exclusively exploiting the second-order statistics (SOS) of the observations. The identifiability...
Fuzzy error matrix based on fuzzy error logic is used to express current status u, expectant status u1 and transformation matrix T. It is u,u1, and T that are used to build fuzzy error matrix equation T(u)=u1. It allows us to find a method that bad status “u” change to good status “u1” by solving equation. The purpose of solving fuzzy error matrix equation is to get a decision support about how to...
The mathematical model of linear induction motor (LIM) based on slip frequency type vector control system is established. A self-adjusting fuzzy controller (SAFC) is designed as magnetic thrust adjuster of the motor. The speed of the motor is adjusted by control magnetic thrust of the motor. The scheme of the slip frequency type vector control system of the LIM is obtained by observing the magnetic...
In order to eliminate the influence of incomplete sample data in fault diagnosis, Bayesian theorem is used for the design of Petri nets diagnostic model. Firstly, the concept about probability Petri net is defined. It can calculate the occurred probability of the absent datum based on Bayesian theorem from the detected attributes. Secondly, for the complicated Petri nets will induce the combinatorial...
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