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PLC在大型音乐喷泉实时控制系统中的设计与应用 总被引:2,自引:0,他引:2
采用PLC与普通计算机组成的音乐喷泉实时控制系统中,发挥PLC的通信功能和编程特点,实现上位机与下位机的通信与控制,由PLC来完成喷泉实时控制中的各种水型、灯光、跑泉的快速变化动作,为快速、高效地构建:大型音乐喷泉实时控制系统提供可靠、性价比优越的的应用方案,同时该设计方法也适用于PLC程控喷泉的调试及独立运行。 相似文献
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提出了一种基于Profibus-DP总线结构的音乐水景电控系统。采用开放式配曲方式,以音频调制信号作为喷泉控制信号,依托可编程控制器及变频器控制音乐彩灯和水泵运行,实现了喷泉组样以及水柱的上下起伏,通过试验模拟运行,达到了预期效果。 相似文献
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在分析现有喷泉模拟的基础上,针对喷泉造型的研究相对较少的问题,进行了喷泉造型设计并建模。运用多种数学曲线、曲面方程建立了复杂特殊的喷泉造型模型,并分析喷泉粒子的运动特性建立了喷泉运动模型。采用Visual Studio为编程工具,结合OpenGL技术渲染场景,在Windows XP环境下开发了基于粒子系统的喷泉模拟系统,仿真效果真实。 相似文献
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《电子制作.电脑维护与应用》1996,(8)
彩色音乐喷泉是一种具有音控及程控功能的喷泉——喷头的多姿造型,缤纷的水下灯光都可随程序或音乐的强弱跳动,给人以声、形、色三位一体享受。喷泉控制器往往集音控和程控一体,具有操作方便、功能齐全等特点。目前大型喷泉一般采用微机或单片机控制,有的还在音控环节采用了变频调速技术。但对于中、小型喷泉来说,则完全可以用普通数字电路制作控制器。这样制作的控制效果并不比微 相似文献
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音乐喷泉是近几年来出现的一种园林建筑与音乐欣赏相结合的产物,它的出现改变了喷泉艺术单调不变的局面,在音乐的伴随下喷泉的高度、灯光的强度、色彩以及喷泉造型随音乐的音量而变化,整个喷泉千变万化,忽而气势磅礴,忽而悠然舒缓,使人们沉醉于音乐海洋和大自然的怀抱之中。 相似文献
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基于Turbo喷泉码和小波包分形调制技术,提出一种新的异步广播通信系统FPGA实现方案。系统用并行信源信道Turbo喷泉码实现无损数据压缩和纠错,小波包调制实现发送信号时频图样的自由铺砌。系统可以同时实现接收机的异步接入、单向信道下数据的可靠分发及信源信道联合编码,仿真表明该系统相对普通信源信道编码调制有较大性能改善。 相似文献
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多媒体应用系统开发中音乐与声音控制技术 总被引:2,自引:0,他引:2
阐述了多媒体应用系统具有背景音乐、解说声音的作用和意义,提出了对音乐、解说控制的各项功能,具体介绍了在多媒体创作工具Authorware中实现其控制的方法和在VisualC++与Authorware混合编程环境下共同实现其控制的方法,并比较了这两种方法的优劣。 相似文献
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Detlev Zimmermann 《Constraints》2001,6(1):53-83
Modelling musical structures is a research field prominent among mathematicians and computer scientists as well as musicologists, psychomusicologists and musicians. Constraint programming has been proved to be a highly appropriate technique in this field. For the task of automated music composition, in particular, constraints have been shown to describe composition principles in a declarative, natural, and, above all, efficient way since music composition knowledge is in fact a collection of conditions rather than a sort of cookery-book.Unfortunately, many approaches stress the technical aspects of applying constraints and do not think about the concrete role of constraints, i.e. about what music really should be. In general, the composer as an artist is more concerned about what he wants to say through his music than with theoretically (or socially or psychologically) established rules. This means that automated music composition needs practical goals in order to make sense. The role of those goals as well as musical constraints and constraint technologies that help to realize the goals are to be shown in this article. As a modelling example the system COPPELIA is introduced. It generates music on the basis of the structures, goals, and contents of given multimedia presentations. In this relatively young field of constraint application that does not supply such ideal, well-defined and closed sets of conditions as technical applications do, we find it very important to also present general thoughts about the sense of our application, about the development of composition constraints and the conditions under which these constraints work effectively. 相似文献
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如今社会的生活节奏越来越快,随着硬件移动设备的越来越先进,人们对移动设备的要求也越来越高,从以前的追求技术到现在的追求视觉,因此,也逐步的提高了对系统的要求。的音乐播放器采用了Android开源系统技术,Android是一种以Linux为基础的开放源代码操作系统,在android平台下设计和实现音乐播放器,利用java语言和Eclipse编程工具实现。通过设计播放器能够实现音乐的播放、暂停、上一曲、下一曲、音乐列表、声音控制等功能,性能良好,在Android系统中能独立运行。 相似文献
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弹簧试验机微机控制检测系统的设计 总被引:2,自引:0,他引:2
简要地介绍了一新型弹簧试验机微机控制检测系统的软、硬件开发 ,该检测装置采用串行口通信 ,编程控制。它是一个能自动加载测试 ,自动拟合曲线 ,自动分析和处理数据的测试装置 相似文献
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Sung-Woo Bang Jaekwang Kim Jee-Hyong Lee 《International Journal of Control, Automation and Systems》2013,11(6):1290-1299
In this paper, we suggest a new approach of genetic programming for music emotion classification. Our approach is based on Thayer’s arousal-valence plane which is one of representative human emotion models. Thayer’s plane which says human emotions is determined by the psychological arousal and valence. We map music pieces onto the arousal-valence plane, and classify the music emotion in that space. We extract 85 acoustic features from music signals, rank those by the information gain and choose the top k best features in the feature selection process. In order to map music pieces in the feature space onto the arousal-valence space, we apply genetic programming. The genetic programming is designed for finding an optimal formula which maps given music pieces to the arousal-valence space so that music emotions are effectively classified. k-NN and SVM methods which are widely used in classification are used for the classification of music emotions in the arousal-valence space. For verifying our method, we compare with other six existing methods on the same music data set. With this experiment, we confirm the proposed method is superior to others. 相似文献
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基于CompactLogix和现场总线的过程控制系统 总被引:2,自引:0,他引:2
对过程控制中的集散控制系统DCS与现场总线控制系统FCS进行了比较,详细阐述了基于Rockwell Automation的现场总线技术DeviceNet的网络控制方法,并通过PID算法编程与监控软件开发,实现了基于CompactLogix控制器与DeviceNet现场总线的过程控制系统。 相似文献
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Neural-Network-Based Near-Optimal Control for a Class of Discrete-Time Affine Nonlinear Systems With Control Constraints 总被引:6,自引:0,他引:6
Huaguang Zhang Yanhong Luo Derong Liu 《Neural Networks, IEEE Transactions on》2009,20(9):1490-1503
In this paper, the near-optimal control problem for a class of nonlinear discrete-time systems with control constraints is solved by iterative adaptive dynamic programming algorithm. First, a novel nonquadratic performance functional is introduced to overcome the control constraints, and then an iterative adaptive dynamic programming algorithm is developed to solve the optimal feedback control problem of the original constrained system with convergence analysis. In the present control scheme, there are three neural networks used as parametric structures for facilitating the implementation of the iterative algorithm. Two examples are given to demonstrate the convergence and feasibility of the proposed optimal control scheme. 相似文献
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阐述了多媒体系统中的背景音乐与解说声音的作用与意义,具体介绍了一种在多媒体创作中实现背景音乐与解说声音的双滑杆音量控制技术,该技术与目前一些常用的声音控制方法相比,在控制上更为容易、在程序界面也较为简洁。 相似文献