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控制理论与应用（英文版） 2006年第4期4卷 327-330页

作者： Yong YANG An LUO karl-erik rydberg College of Automotive and Mechanical Engineering Changsha University of Science and Technology Changsha Hunan 410076 China College of Information Science and Engineering Central South University Changsha Hunan 410083 China College of Electric and Information Engineering Hunan University Changsha Hunan 410082 China Department of Mechanical Engineering Linkoeping University Linkoeping SE-581 83 Sweden

A PI control strategy based on fuzzy set-point weighting following was proposed for the active damping control of a hydraulic crane boom system （HCBS）. Two valve-controlled PI controllers, which include a proportional feedforward controller based on fuzzy set-point weighting following and a limited semi-integrator（LSI）, are designed respectively. LSI is used to limit output signal and to prevent wind up at the low frequency of the spectrum. By using a range camera and an electronic feedback control, the tip damping on the HCBS can be adjusted artificially. A collaborative control simulation technique of HOPSAN and MATLAB/SIMULINK is applied to the controller design. Simulation results show that the proposed PI control system has less overshoot as well as faster response. The tip damping on the HCBS during operation is improved.

关键词： PI control Fuzzy set-point weighting (FSPW) Limited semi-integrator(LSI) Active damping Collaborative control simulation Range camera Hydraulic crane boom system (HCBS)

Thermal Aspects in Lubrication System Design for Internal Combustion Engines

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Journal of Shanghai Jiaotong university(Science) 2000年第1期5卷 332-341页

作者： Jochen Pohl, karl -erik rydberg, Petter Krus Fluid and Mechanical Engineering Systems, Linkoping University, SE-581 83 Linkoping, Sweden

The mechanical losses in an internal combustion engine cause a significant decrease in the engine’s overall efficiency. Wherever friction work is dissipated a heat load will inevitably appear. This heat load has to be taken care of in some way, usually with both the water-cooling and the lubrication system. Despite its name, one of the major tasks of the latter one is, to draw out heat from between lubricated surfaces. In contrast to the water cooling system, which is primarily designed for cooling the cylinder block, the lubrication system is mainly required for cooling the crankshaft and piston rod bearings. A lubrication system for today’s automotive engines consists of several components, i.e. an oil pump, a pressure relief valve and an oil filter. This study focuses on the dynamic characteristics of a pressure relief valve and how the system temperature is affected by the critical design parameters of the valve. Using a thermodynamic simulation model together with an optimisation strategy makes it possible to express the desired system characteristics. Then, the optimisation strategy seeks for a similar system configuration with help of the model.

关键词： Internal Combustion Engine Lubrication System Themodynamic Modelling Optimisation Pressure Relief Valve

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How Many Penniey?

中学生英语 2003年第6期 4-6页

作者： Louisa rydberg ,施朗

It was Timmy’s *** father said,“timmy! Youare old enoughnow to havemoney of *** on, youwill get tenpennies eachSaturday. Youmay do as you

关键词： HO Ti How Many Penniey

Exploring InDesign CS

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有症状的胃食管反流病中埃索美拉唑抑酸能力比奥美拉唑更强

2005年

作者： Terry rydberg.

来源：畅想之星图书光盘版（南... 评论

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中华消化杂志 2002年第9期22卷 558-559页

作者： Lind T rydberg L Kyreback A Jonsson A Andersson T Hasselgren G Holmberg J Rohss K 钟捷 Department of Surgery KarnsjukhusetSkovde 上海第二医科大学瑞金医院消化科

目前已知胃反流物的侵袭力（以黏膜损害程度表示）及胃食管反流病（GERD）的相关症状对pH值有高度依赖性。认为胃内pH=4是鉴别反流有无侵袭力的分界点。pH 4的时间直接相关，这个相关性能很好解释质子泵抑制剂（PPI）高效、持续的控制... 详细信息

目前已知胃反流物的侵袭力（以黏膜损害程度表示）及胃食管反流病（GERD）的相关症状对pH值有高度依赖性。认为胃内pH=4是鉴别反流有无侵袭力的分界点。pH 4的时间直接相关，这个相关性能很好解释质子泵抑制剂（PPI）高效、持续的控制胃酸，快速缓解症状和食管炎愈合率高的关系。PPI已被认为是GERD起始治疗的首要选择，并得到Genval工作组共识的认可。

关键词：胃食管反流病埃索美拉唑奥美拉唑质子泵抑制剂胃酸控制

主动脉瓣狭窄程度影响左房室平面位移而不影响左心室射血分数

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世界核心医学期刊文摘（心脏病学分册） 2005年第2期1卷 37-38页

作者： rydberg E. Gudmundsson P. Kennedy L. 郭宁 Department of Car diology MalmUniversity Hospital S-205 02 Malm Sweden Dr.

Aims: To examine how left atrioventricular plane displacement(AVPD), a widely used measure of left ventricular(LV) function, is related to presence and degree of aortic stenosis. Methods and results: Cardiac dimensions, LV filling, left A VPD, LV ejection fraction (LVEF), and valve function were assessed by echocardio graphy/Doppler in 182 patients with various cardiac diseases (mean (SD) age 69(1 2) years, 36%women), 49 consecutive with and 133 consecutive without aortic ste nosis. In an analysis of covariance, neither left AVPD nor LVEF was independentl y correlated with the presence of aortic stenosis. However, looking separately a t patients with aortic stenosis, left AVPD (p=0.03) but not LVEF correlated inde pendently with degree of aortic stenosis in multiple linear regression analysis. In patients with aortic stenosis, an abnormal left AVPD had 94%sensitivity and 90%negative predictive value with regard to severe aortic stenosis, compared w ith 56%and 62%, respectively, for LVEF. Conclusion: In patients with cardiac d isease, neither left AVPD nor LVEF correlated independently with presence of aor tic stenosis. However, in patients with aortic stenosis, left AVPD but not LVEF correlated with the degree of aortic valve obstruction and left AVPD but not LVE F had high sensitivity and negative predictive value with regard to severe aorti c stenosis. Compared with LVEF, left AVPD is an earlier and more sensitive marke r of LV haemodynamic load in patients with aortic stenosis.

关键词：左心室射血分数主动脉瓣狭窄多普勒检测主动脉狭窄充盈量阴性预测值瓣膜功能超声心动图梗阻程度血流动力学

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暖热带泻湖的潮汐交换:桑给巴尔的楚瓦卡湾

人类环境杂志 1995年第7期24卷 458-464页

作者： Ulf Cederlf Lars rydberg Maurice Mgendi Oberth Mwaipopo 刘宝廷哥德堡大学坦桑尼亚达累斯萨拉姆气象部门桑给巴尔海洋科学研究所

楚瓦卡(Chwaka)湾是东非海岸一处浅的潮汐沼泽,对其海平面、流速和温度进行测量是为了研究水的交换和热通量。海湾的面积在高潮位时为50km^2,在低潮位时为20km^2。该海湾的特点是具有大面积泥质沙滩,部分被海草覆盖。半天一次的大潮涨... 详细信息

楚瓦卡(Chwaka)湾是东非海岸一处浅的潮汐沼泽,对其海平面、流速和温度进行测量是为了研究水的交换和热通量。海湾的面积在高潮位时为50km^2,在低潮位时为20km^2。该海湾的特点是具有大面积泥质沙滩,部分被海草覆盖。半天一次的大潮涨落幅度是3.2m。西南小湾被红树林植被所环绕,此处表现为退潮时间长和退潮速度快相结合的潮汐不对称性。根据同一时刻的海平面和温度数据,计算出与海洋的水和热量交换。尽管海湾内的平均温度高于海洋的,但却平均从海洋输入约50W/m^2的热量。因此,长波的反射辐射、蒸发及显热通量的总量超过了短波太阳辐射的净输入。这种负的热量平衡是由于海湾底部对短波辐射反射的结果。这一结果被一套数据所证实,这套数据把温度作为一天时间和高潮后时间的函数来描述,以作为舒适海浴的指标。虽然海湾在低潮时海水几乎被排尽,且水的平均滞留时间约为1/2～1天,但海湾内水的停留时间实际上要更长一些。

关键词：湖泊暖热带泻湖潮汐交换

对10岁早产儿和足月儿屈光状态的人口统计学研究

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美国医学会眼科杂志（中文版） 2004年第3期16卷 186-187页

作者： EvaK.Larsson AgnetaC.rydberg GerdE.Holmstrom 陆遥

目的：评估10岁早产儿和足月儿的屈光状态。

关键词：屈光状态足月儿早产儿评估人口统计学研究目的

对10岁早产儿和足月儿基于人群的视力情况研究

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世界核心医学期刊文摘（眼科学分册） 2005年第12期1卷 31-32页

作者： Larsson E.K rydberg A.C Holmstrm G.E 潘佳鸿 Department of Ophthalmology Uppsala University Hospital 751 85 Uppsala Sweden.Dr

Objectives: To report the visual outcome in prematurely born and full-term children at the age of 10 years and to evaluate the effects of prematurity per se, retinopathy of prematurity (ROP), and cryotreatment on visual acuity. Methods: The study included 216 prematurely born children and 217 children born at term from the same geographical area and study period. Best-corrected distance and near visual acuities were assessed with linear letter logarithm of the minimum angle of resolution charts. Crowding was evaluated. Results: Prematurely born children had reduced distance and near visual acuities compared with full-term children, even when children who had retinopathy of prematurity and neurologic disorders were excluded (P< .001). Children who had been treated with cryotherapy had the highest risk of a reduced visual acuity. Two percent of the prematurely born children were visually impaired ( < 20/60). Conclusions: Although we found an overall good visual outcome in the prematurely born cohort, the risk of reduced visual acuity was greater than in full-term children. Children who had been treated with cryotherapy had the highest risk, but prematurity per se was also associated with reduced visual acuity.

关键词：早产儿视网膜病视力情况冷凝治疗视力减退远近视力对数视力表神经系统疾病角度分辨率