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排序方式: 共有740条查询结果,搜索用时 15 毫秒
71.
回顾了配线检测系统的发展历史;介绍了带LED灯的配线检测系统的硬件组成、工作原理、软件流程、系统方案、系统特点;同时对LED灯配线检测系统使用前后的对比进行了分析。 相似文献
72.
State feedback control of continuous-time T-S fuzzy systems via switched fuzzy controllers 总被引:1,自引:0,他引:1
This paper studies the problem of state feedback control of continuous-time T-S fuzzy systems. Switched fuzzy controllers are exploited in the control design, which are switched based on the values of membership functions, and the control scheme is an extension of the parallel distributed compensation (PDC) scheme. Sufficient conditions for designing switched state feedback controllers are obtained with meeting an H∞ norm bound requirement and quadratic D stability constraints. It is shown that the new control design method provides less conservative results than the corresponding ones via the parallel distributed compensation (PDC) scheme. A numerical example is given to illustrate the effectiveness of the proposed method. 相似文献
73.
74.
Despite the popularity of the analogue measuring devices, there is no recognized reference provided comprehensive guidelines for determining their resolution and its associated uncertainty. For filling this gap, this article is introduced as an attempt to explore and investigate all the available works related to this issue. The new terminology “evident space”, “evident resolution”, and “conjunction” were proposed to set a common reference. Two different techniques for determining the analogue resolution were presented and discussed. Several numerical examples were also presented to show different analogue indications and their interpretations. Moreover, reasonable recommendations for determining the resolution uncertainty were suggested depending on the case. 相似文献
75.
Youla参数化方法广泛应用于控制系统的分析和设计;此方法使得系统闭环稳定的全部的镇定控制器均以一个稳定传递函数作为待定参数来表达;建立另外一种不同的参数化方法,这种方法尤其适用于主动振动控制系统:它不仅参数化所有镇定控制器,同时能够给控制性能变量以非常直观的几何图形解释;讨论这种新方法的特性及其设计,并将该设计方法应用于一个三自由度的主动振动隔离系统中,仿真结果表明,所提出的方法可以有效地达到主动振动隔离的设计目的。 相似文献
76.
Pierre Apkarian 《国际强度与非线性控制杂志
》2011,21(13):1493-1508
》2011,21(13):1493-1508
We revisit robust complex‐ and mixed‐ µ‐synthesis problems based on upper bounds and show that they can be recast as specially structured controller design programs. The proposed reformulations suggest a streamlined handling of µ‐synthesis problems using recently developed (local) nonsmooth optimization methods, where both scalings or multipliers and a controller of given structure are obtained simultaneously. A first cut of the nonsmooth programming software for structured H∞ synthesis is made available through the MATLAB R2010b Prerelease, Robust Control Toolbox Version 3.5 developed by The MathWorks, Inc. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
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78.
Though playing with natural versus traditional game controllers affects game experiences, studies have not investigated how power poses affect the experience of playing natural controlled video games. Participants keeping powerful poses experienced increased enjoyment, presence, and controller responsiveness compared with those holding powerless poses. Congruent with self-perception and automatic activation models, mediation analyses uncovered direct effects of power poses and also indirect effects in which power poses increased power feelings, which in turn were associated with higher enjoyment, presence, and controller responsiveness but reduced arousal. This provides initial evidence for how physical poses affect people's experiences with natural game interfaces, and highlight basic self-perception and automatic activation mechanisms behind the effect. 相似文献
79.
Soft computing techniques including fuzzy logic have been successfully applied to wireless body area networks (WBANs). However, most of the existing research works rely on manual design of the fuzzy logic controller (FLC). To address this issue, in this paper, we propose an evolutionary approach to automate the design of FLCs for cross layer medium access control in WBANs. With the goal of improving network reliability while keeping the communication delay at a low level, we have particularly studied the usefulness of three coding schemes with different levels of flexibility during the evolutionary design process. The influence of fitness functions that measure the effectiveness of each possible FLC design has also been examined carefully in order to achieve a good balance between reliability and performance. Moreover, we have utilised surrogate models to improve the efficiency of the design process. In consideration of practical usefulness, we have further identified two main design targets. The first target is to design effective FLCs for a specific network configuration. The second target focuses on designing FLCs to function across a wide range of network settings. In order to examine the usefulness of our design approach, we have utilised two widely used evolutionary algorithms, i.e. particle swarm optimisation (PSO) and differential evolution (DE). The FLC designed by our approach is also shown to outperform some related algorithms as well as the IEEE 802.15.4 standard. 相似文献
80.