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Further improvement in the control accuracy of the hydraulic servo system is hampered by its position control structure and non-structural uncertainty. For structural uncertainties, nonlinear adaptive control can be applied to achieve asymptotic tracking performance. While unstructured uncertainties, such as nonlinear frictions, always exist in hydraulic systems and reduce the tracking accuracy. In...
The main chemical compositions of tobacco is one of the significant factors to decide the quality of tobacco, and it is time consuming, expensive, unrepeatable and destructive to obtain the chemical compositions in laboratories. This paper investigates the relationship between tobacco near infrared (NIR) spectra and chemical composition, thus the chemical composition can be easily obtained through...
This paper addresses the signal-strength-of-arrival (SSOA) based localization problem with unknown transmit power, which is of vital importance for the rescue system in ruins scenarios. First, a semidefinite programming method is proposed to transform the nonconvex and nonlinear problem into a convex optimization problem, which presents an excellent performance even in the high interference situations...
Electric load simulator (ELS) is a resonant system and has a large coefficient caused by the stiffness of shaft. Its dynamic performance is always limited and stability is hard to be guaranteed. Besides, its external disturbance is the active motion of an actuator, and output is the load torque, which are both different from conventional servo systems. Therefore, the speed controller of ELS needs...
Nowadays, face-to-face interpersonal communication has been gradually replaced by communications via virtual social network platforms, which applies to the new generation of education. The amount of user-generated data in social networking sites is increasing day by day. Understanding and consuming this great amount of data has become a harder task. Classifying the user-generated data (mainly text)...
This paper employs the extended BLT equation to analyze the terminal response of lossy microstrip line illuminated by a plane wave. The paper yields the equivalent transmission line model of microstrip line by analyzing its distribution parameters. By treating the electromagnetic field coupling path as “tube” and considering coupled and scattered components of microstrip line, the paper advances original...
This paper proposes a Simplified Structure Evolving Method (SSEM) for Fuzzy Systems, which improves our previous work of Structure Evolving Learning Method for Fuzzy Systems (SELM [1]). SSEM keeps all the advantages of SELM [1] and improve SELM by starting with the simplest fuzzy rule set with only one fuzzy rule (instead of 2n fuzzy rules in SELM) as the starting point. By doing this SSEM is able...
Under a unexpected disaster, The fundamental purpose of emergency evacuation is to take a scientific and effective evacuation strategy to maximize the population of the evacuation of the affected in the shortest time, and in which, the construction of evacuation routes and the distribution of evacuation intersection flow is the key of the realization of this purpose. In this paper, aiming at the problem...
Operating room (OR) is the most resource-intensive place in a hospital as well as the bottlenecks of resource and patient flow during treatment process. A reasonable operating room scheduling plan can help to develop the utilization of operating room and increase patients?? satisfaction. But most of the domestic hospitals haven??t inducted scientific administration methods to build their operating...
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