Topic
Reducer
About: Reducer is a research topic. Over the lifetime, 24905 publications have been published within this topic receiving 63829 citations.
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01 Jun 2008
TL;DR: Results from a simulated coupled tank experiment demonstrated that IT2 FLCs that employ the proposed type reduction algorithm share similar robustness properties as FLC's based on the Karnik-Mendel type reducer.
Abstract: This paper introduces an alternative type-reduction method for interval type-2 (IT2) fuzzy logic systems (FLSs), with either continuous or discrete secondary membership function. Unlike the Karnik-Mendel type reducer which is based on the wavy-slice representation of a type-2 fuzzy set, the proposed type reduction algorithm is developed using the vertical-slice representation. One advantage of the approach is the output of the type reducer can be expressed in closed form, thereby providing a tool for the theoretical analysis of IT2 FLSs. The computational complexity of the proposed method is also lower than the uncertainty bounds method and the enhanced Karnik-Mendel method. To assess the feasibility of the proposed type-reducer, it is used to calculate the output of an IT2 fuzzy logic controller (FLCs). Results from a simulated coupled tank experiment demonstrated that IT2 FLCs that employ the proposed type reduction algorithm share similar robustness properties as FLCs based on the Karnik-Mendel type reducer.
264 citations
Patent•
09 Nov 2010TL;DR: In this article, an outer pin holder and a housing in a speed reducer section at their predetermined positions are maintained to prevent damage to such components as revolving members, outer circumferential engagers, and motion conversion mechanism upon a large axial load due to turning or sudden acceleration/deceleration, etc.
Abstract: An object of the invention is to always maintain an outer pin holder and a housing in a speed reducer section at their predetermined positions, to prevent damage to such components as revolving members, outer circumferential engagers, and motion conversion mechanism upon a large axial load due to turning or sudden acceleration/deceleration, etc., and to eliminate rattling noise caused by the housing and the outer pin holder. A casing immobilizing member which is fixed to an inner surface of a speed reducer section casing and a housing immobilizing member which is fixed to an outer surface of a speed reducer section housing are provided between the speed reducer section casing and the speed reducer section housing. The casing immobilizing member and the housing immobilizing member are bonded with each other via a rubber member.
229 citations
Patent•
14 Jan 2005
TL;DR: An atomic layer deposition (ALD) apparatus capable of forming a conformal ultrathin-film layer with enhanced step coverage is described in this article, which includes an ALD reactor supporting a wafer, and a main pipe coupled with a carrier gas.
Abstract: An atomic layer deposition (ALD) apparatus capable of forming a conformal ultrathin-film layer with enhanced step coverage is disclosed. The apparatus includes an ALD reactor supporting therein a wafer, and a main pipe coupled thereto for constant supply of a carrier gas. This pipe has two parallel branch pipes. Raw material sources are connected by three-way valves to one branch pipe through separate pipes, respectively. Similarly, oxidant/reducer sources are coupled by three-way valves to the other branch pipe via independent pipes. ALD works by introducing one reactant gas at a time into the reactor while being combined with the carrier gas. The gas is “chemisorped” onto the wafer surface, creating a monolayer deposited. During the supply of a presently selected material gas from its source to a corresponding branch pipe, this gas passes through its own pipe independently of the others. An ALD method is also disclosed.
151 citations
TL;DR: In this paper, a countercurrent moving-bed reducer is proposed to reduce the oxygen carrier with syngas in the cyclic reduction and regeneration of an iron oxide-based oxygen carrier.
Abstract: The syngas chemical looping process co-produces hydrogen and electricity from syngas through the cyclic reduction and regeneration of an iron oxide based oxygen carrier. In this article, the reducer, which reduces the oxygen carrier with syngas, is investigated through thermodynamic analysis, experiments, and ASPEN Plus® simulation. The thermodynamic analysis indicates that the countercurrent moving-bed reducer offers better gas and solids conversions when compared to the fluidized-bed reducer. The reducer is continuously operated for 15 h in a bench scale moving-bed reactor. A syngas conversion in excess of 99.5% and an oxygen carrier conversion of nearly 50% are obtained. An ASPEN Plus® model is developed which simulates the reducer performance. The results of simulation are consistent with those obtained from both the thermodynamic analysis and experiments. Both the experiments and simulation indicate that the proposed SCL reducer concept is feasible. © 2009 American Institute of Chemical Engineers AIChE J, 2010
144 citations
TL;DR: A novel model for fault diagnosis based on empirical mode decomposition (EMD) and multi-class transductive support vector machine (TSVM) is applied to diagnose the faults of the gear reducer and the experimental results obtain a very high diagnosis accuracy.
133 citations