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我国建成30kW摆式波力电站 总被引：1，自引：0，他引：1
国家“九五”科技攻关计划专题山东省即墨市大管岛30kw摆式波力电站研建专题于2000年7月在国家科技部、中国科学院和国家海洋局的主持下,经过技术专家组评审,圆满通过了验收。这是我国建成的第一个摆式波力电站。 相似文献
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本文主要论述了摆式波力电站的吸能机制,提出了吸能原理,从力和作功的角度探讨了吸能的实质,分析比较了几种摆板运动方程形式之间的联系和区别。给出了波能转换效率的定义,并进一步分析了波能转换效率的组成和性质。 相似文献
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珠江口波力试验电站实海况性能测试与控制系统 总被引：1，自引：0，他引：1
波力电站性能测试数据,对指导波能系统工程设计和理论研究有着重要的意义。本文对我国第一座岸式波力发电站测试控制系统、实海况下性能试验作了简要介绍。给出一组现场测量数据,并提出负载控制法,使电站稳定运行。 相似文献
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1989年8月22—23日国家海洋专业组—学科组办公室在天津海洋技术研究所召开了“小钦岛摆式波力实验电站可行性研究评审会”。参加会议的13个单位24位代表听取了各专题报告,观看了摆式波能转换器的水力模型试验的录相和液压发电的模拟装置的表演.会议认为:1.小钦岛大石棚作为北方海域的波能试验电站是可取的。2.摆式波力发电国外已有实例,我国作为开发波能的方式之一,可与振荡水柱式、波流式并列进行.3.液压传动系统已有成熟的技术,将其引用于波 相似文献
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大万山岸式振荡水柱波力电站的输出功率 总被引：3，自引：0，他引：3
中国科学院广州能源研究所在位于南海的珠海市大万山岛建成一座岸式振荡水柱型示范波力电站。波力电站具有喇叭口前港，属多振荡型。广州能源研究所于１９８９年、１９９０年及１９９１年分别对其做了三次短期海上实测，其中包括对Ｗｅｌｓ透平发电机组的海上运行试验，证明该电站具有良好的实海况发电性能。电站的总能量俘获宽度比约为１０～４０％。本文对电站作了概述，并给出了电站实海况运行的结果。在该电站原有结构基础上，广州能源研究所已将其改建成一座２０ｋＷ的波力电站，并于１９９６年２月试发电成功。 相似文献
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摆式波力电站中几个重要参数的设计 总被引：2，自引：2，他引：0
本文利用有限差分方法分析了摆式波力电中的摆板工作原理,建立了摆板运动方程的有限差分形式,通过计算机辅助设计,提出了一种最优化设计,包含有波浪力矩的推导,限位边界条件的考虑及最优化方程组。 相似文献
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在造波水槽进行了100kW波力电站气室模型性能试验。测定了设计波周期下，不同入射波高时的ΔPav-Qav、ηA-Qav、NA－Qav以及不同喷咀比时的ΔPav-Qav曲线。还测定了两种喷咀比下，不同入射波高时，波力电站气室性能随波周期变化曲线。数据表明，该气室的设计和建造虽受到站址地形条件和施工条件的诸多制约，但仍有较高的波能转换效率。 相似文献
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提出了采用模糊向量加权记分法作为城市市区纳污河涌的水质评价方法，给出评价指标和评价标准的选择建议，并结合实例进行说明，同时还对城市河涌的治理途径进行了探讨。 相似文献
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Risk-based decision-making for drilling waste discharges using a fuzzy synthetic evaluation technique 总被引：5，自引：0，他引：5
Offshore petroleum drilling wastes contain toxic substances that are potentially harmful to the marine ecosystem. Despite environmentally benign characteristics, wastes associated with synthetic-based fluids still contain a certain amount of pollutants due to contamination with formation oil and the presence of trace heavy metals in barite, which may pose risk when discharged into the marine environment. A framework is presented here for a decision support system for the selection of the best drilling waste discharge option. Uncertainties in the quantification of risk, cost and technical feasibility are expressed by fuzzy numbers. An analytical hierarchy process with a technique called fuzzy synthetic evaluation is employed to determine the best management alternative (discharge scenario). 相似文献
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Design of a sliding mode fuzzy controller for the guidance and control of an autonomous underwater vehicle 总被引：1，自引：0，他引：1
This work demonstrates the feasibility of applying a sliding mode fuzzy controller to motion control and line of sight guidance of an autonomous underwater vehicle. The design method of the sliding mode fuzzy controller offers a systematical means of constructing a set of shrinking-span and dilating-span membership functions for the controller. Stability and robustness of the control system are guaranteed by properly selecting the shrinking and dilating factors of the fuzzy membership functions. Control parameters selected for a testbed vehicle, AUV-HM1, are evaluated through tank and field experiments. Experimental results indicate the effectiveness of the proposed controller in dealing with model uncertainties, non-linearities of the vehicle dynamics, and environmental disturbances caused by ocean currents and waves. 相似文献
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文章简要回顾海洋水体富营养化评价方法,探索建立海水养殖区富营养化水平模糊综合评价模型,并就桑沟湾海水养殖区的化学需氧量、无机氮(硝酸盐、亚硝酸盐和氨氮之和)、活性磷酸盐、溶解氧、pH值、叶绿素a等指标进行了不同时段、不同时空的综合评价,系统分析综合评价结果的合理性,与其他富营养化评价方法进行了比较,得出用模糊综合评价方法取得的结果更有利于指导海水养殖生产的结论。 相似文献
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Generally, the underwater flight vehicle (UFV) depth control system operates with the following problems: it is a multi-input multi-output (MIMO) system, it requires robustness, a continuous control input, and further, it has the speed dependency of controller parameters. To solve these problems, an expanded adaptive fuzzy sliding mode controller (EAFSMC), which is based on the decomposition method designed by using an expert knowledge and the decoupled sub-controllers and composition method designed by using the fuzzy basis function expansions (FBFEs), is proposed. To verify the performance of the EAFSMC, the depth control of UFV in various operating conditions is performed. Simulation results show that the EAFSMC solves all problems experienced in the UFV depth control system online. 相似文献
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如何计算整个系统的运转效率，特别是受不确定因素影响的系统(如过驳系统)，仍然是一个非常重要的研究课题。文章提出基于模糊综合评判方法的效率计算方法，是一种新的尝试，这种方法较好的避免了人的主观随意性，更符合实际情况，同时又可以弥补统计方法的不足。文章对某沿海地区的一过驳系统进行了效率计算，取得比较好的效果。 相似文献
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Prediction of wave parameters by using fuzzy logic approach 总被引：2，自引：0，他引：2
The purpose of this study is to investigate the relationship between wind speed, previous and current wave characteristics. It is expected that such a non-linear relationship includes some uncertainties. A fuzzy inference system employing fuzzy IF–THEN rules has an ability to deal with ill-defined and uncertain systems. Compared with traditional approaches, fuzzy logic is more efficient in linking the multiple inputs to a single output in a non-linear domain. In this paper, a sophisticated intelligent model, based on Takagi–Sugeno (TS) fuzzy modeling principles, was developed to predict the changes in wave characteristics such as significant wave height and zero up-crossing period due to the wind speed. Past measurements of significant wave height values and wind speed variables are used for training the adaptive model and it is then employed to predict the significant wave height amounts for future time intervals such as 1, 3, 6 and 12 h. The verification of the proposed model is achieved through the wave characteristics time series plots and various numerical error criterias. Also the model results were compared with classical Auto Regressive Moving Average with exogenous input (ARMAX) models. For the application of the proposed approach the offshore station located in the Pacific Ocean was used. 相似文献