Topic
Compensation (engineering)
About: Compensation (engineering) is a research topic. Over the lifetime, 34520 publications have been published within this topic receiving 221788 citations.
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TL;DR: The authors represent a nonlinear plant with a Takagi-Sugeno fuzzy model with a model-based fuzzy controller design utilizing the concept of the so-called "parallel distributed compensation" and presents a design methodology for stabilization of a class of nonlinear systems.
Abstract: Presents a design methodology for stabilization of a class of nonlinear systems. First, the authors represent a nonlinear plant with a Takagi-Sugeno fuzzy model. Then a model-based fuzzy controller design utilizing the concept of the so-called "parallel distributed compensation" is employed. The main idea of the controller design is to derive each control rule so as to compensate each rule of a fuzzy system. The design procedure is conceptually simple and natural. Moreover, the stability analysis and control design problems can be reduced to linear matrix inequality (LMI) problems. Therefore, they can be solved efficiently in practice by convex programming techniques for LMIs. The design methodology is illustrated by application to the problem of balancing and swing-up of an inverted pendulum on a cart.
2,534 citations
TL;DR: In this article, the authors present the present status of active filters based on state-of-the-art power electronics technology, and their future prospects and directions toward the 21st Century, including the personal views and expectations of the author.
Abstract: Attention has been paid to active filters for power conditioning which provide the following multifunctions: reactive power compensation; harmonic compensation; flicker/imbalance compensation; and voltage regulation. Active filters in a range of 50 kVA-60 MVA have been practically installed in Japan. In the near future, the term "active filters" will have a much wider meaning than it did in the 1970s. For instance, active filters intended for harmonic solutions are expanding their functions from harmonic compensation of nonlinear loads into harmonic isolation between utilities and consumers, and harmonic damping throughout power distribution systems. This paper presents the present status of active filters based on state-of-the-art power electronics technology, and their future prospects and directions toward the 21st Century, including the personal views and expectations of the author.
1,700 citations
TL;DR: The authors' own data allow for a direct confirmation of this localization of this neural system in the brain in humans using a 64-channel geodesic electrode net, which enabled us to fully characterize the scalp topography of the ERN.
Abstract: Gehring, Goss, Coles, Meyer, and Donchin (1993) have reported electrophysiological evidence for a brain mechanism dedicated to monitoring performance and compensating for errors (see also Falkenstein, Hohnsbein, Hoormann, & Blanke, 1990). They have described a component of the human event-related potential, called the error-related negativity (ERN), which is characterized by a negative peak about 100 ms following the onset of electromyographic (EMG) activity when the subject is in error on that trial. The amplitude of the ERN is larger when the subject strives for response accuracy than when the subject concentrates on speed. It is also correlated with several error-compensation variables. The larger the ERN, the smaller the force with which the erroneous key is pressed, the higher the probability of correcting the error by immediately depressing the other key, and the slower the reaction time on the next trial. These correlations suggest that the neural system whose activity is reflected by the ERN is involved in the active inhibition and correction of an error as soon as it is detected. Gehring et aI. (1993) noted that the data from their study did not allow for the localization of this neural system in the brain. They recorded from five electrode sites and observed only that the ERN was largest over the front and middle of the scalp. They did, however, offer some speculation, based on animal evidence, pointing toward \"a system involving the anterior cingulate cortex and supplementary motor areas\" (p. 389). Our own data allow for a direct confirmation of this localization in humans. We recorded high-density event-related potentials using a 64-channel geodesic electrode net (Tucker, 1993), with an interelectrode spacing of about 4 cm. This methodology enabled us to fully characterize the scalp topography of the ERN in two different experiments. In the first experiment (Dehaene, 1994), 12 subjects were presented on each trial with a single Arabic or spelled-out numeral. They had to press one key with one hand if the target was larger than 5 and another key with the other hand if it was smaller than 5. In the second experiment (Dehaene, unpublished data), 12 other subjects were presented with lists of words, which they had to classify as belonging or not to a target semantic category (e.g., an-
1,255 citations
TL;DR: This article provided useful insights into the structure of compensation plans and their incentive effects, however, one important limitation of these studies is the virtual absence of any cross-sectional analyses of the attributes of compensation contracts.
Abstract: Prior research has provided useful insights into the structure of compensation plans and their incentive effects.' However, one important limitation of these studies is the virtual absence of any cross-sectional analyses of the attributes of compensation contracts.2 This absence is related, in part, to the problems associated with controlling for "other factors" that affect compensation. That is, compensation contracts are
1,120 citations
TL;DR: It is shown how this framework can handle standard issues such as the analysis of stability and performance with or without uncertainties in the plant model, and robustness issues are problems in their own right and hence not detailed here.
986 citations