ASME/BATH 2019 Symposium on Fluid Power and Motion Control最新文献_第6页

Immersive 3D Vehicle Simulation for Hardware-in-the-Loop Testing of Mobile Hydraulic Controls 面向移动液压控制硬件在环测试的沉浸式三维车辆仿真

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-10-07 DOI: 10.1115/fpmc2019-1706

M. Liermann, Christian Feller, F. Lindinger, Dirk Runge

引用次数: 0

Danfoss Digital Displacement® Excavator: Test Results and Analysis 丹佛斯数字位移®挖掘机:测试结果和分析

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-10-07 DOI: 10.1115/fpmc2019-1669

Joseph J. Budden, C. Williamson

{"title":"Danfoss Digital Displacement® Excavator: Test Results and Analysis","authors":"Joseph J. Budden, C. Williamson","doi":"10.1115/fpmc2019-1669","DOIUrl":"https://doi.org/10.1115/fpmc2019-1669","url":null,"abstract":"\u0000 There is a long trend in off-highway vehicles toward higher energy efficiency and electro-hydraulic control. Digital pumps and motors are poised to become a significant enabling technology in this trend. This paper analyzes a 20-tonne tracked excavator that was equipped with digital displacement pumps and evaluated for efficiency and productivity. Previous research by Artemis Intelligent Power demonstrated improvements compared to a conventional, negative flow control excavator hydraulic system. With support from Artemis, the Danfoss Digital Displacement Excavator (DDE) is a step forward in terms of technology and commercial readiness. DDE is based on a CAT 320 next-generation excavator with completely electronic controls and advanced sensor and operator-assistance features. In before/after testing, DDE showed 15% higher productivity (in meters of trench per hour) and 13% higher efficiency (in meters per liter of fuel) for a trench digging cycle. Static pump efficiency is only part of the story; dynamic response and controllability contributed to the measured performance gains. Potential causes for variation in measurement were analyzed including operator variation, flow variation, and machine response.","PeriodicalId":262589,"journal":{"name":"ASME/BATH 2019 Symposium on Fluid Power and Motion Control","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126124481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Concept Studies on a Multifunctional Unit for Hydraulic Supply and High Lift Actuation in Aircraft 飞机液压供油和高升力驱动多功能装置的概念研究

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-10-07 DOI: 10.1115/fpmc2019-1678

L. Nordmann, F. Thielecke, Peter Lücken, M. Hamm

引用次数: 1

Effects of Oil Contamination Level, Flow Rate and Viscosity on Pressure Drop Development and Dirt Holding Capacity of Hydraulic Filter 油液污染程度、流量和粘度对液压过滤器压降发展和持污能力的影响

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-10-07 DOI: 10.1115/fpmc2019-1631

A. Jokinen, O. Calonius, M. Pietola, J. Gorle

{"title":"Effects of Oil Contamination Level, Flow Rate and Viscosity on Pressure Drop Development and Dirt Holding Capacity of Hydraulic Filter","authors":"A. Jokinen, O. Calonius, M. Pietola, J. Gorle","doi":"10.1115/fpmc2019-1631","DOIUrl":"https://doi.org/10.1115/fpmc2019-1631","url":null,"abstract":"\u0000 In hydraulic systems, the presence of foreign material in the system oil accounts for the majority of system troubles due to mechanical wear of components, sticking of different parts etc. Therefore, it is essential to maintain an adequate cleanliness level of the fluid at all times through filtration. Mechanical filters are used for this purpose, to separate solid particles from the system oil. As a hydraulic filter gets accumulated with dirt throughout its service life, the pressure drop over the filter element increases. This pressure drop is typically used for determining the lifetime of a filter element: once a predetermined pressure drop at certain flow conditions has been reached, the filter has accumulated enough dirt to require servicing or replacement.\u0000 In this paper, a correlation model has been developed to describe the effects of flow and fluid properties on the dirt holding capacity and the service life duration of a hydraulic filter. For this purpose, extensive laboratory tests have been carried out in order to measure the pressure drop development of a filter unit at different oil flow rates, viscosities and gravimetric contamination levels.\u0000 The work in this paper has been done as part of the initial research for investigating the effects of different flow and fluid parameters on hydraulic filtration. The aim of the overall research project is to develop an IoT-enabled smart filter unit that could predict its remaining lifetime, and estimate the condition of the system oil as well.","PeriodicalId":262589,"journal":{"name":"ASME/BATH 2019 Symposium on Fluid Power and Motion Control","volume":" 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132040764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Automated Design and Analysis of a Variable Displacement Linkage Motor 一种可变位移连杆电机的自动化设计与分析

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-10-07 DOI: 10.1115/fpmc2019-1677

Nathaniel J. Fulbright, Grey C. Boyce-Erickson, T. Chase, Perry Y. Li, J. Ven

{"title":"Automated Design and Analysis of a Variable Displacement Linkage Motor","authors":"Nathaniel J. Fulbright, Grey C. Boyce-Erickson, T. Chase, Perry Y. Li, J. Ven","doi":"10.1115/fpmc2019-1677","DOIUrl":"https://doi.org/10.1115/fpmc2019-1677","url":null,"abstract":"\u0000 Hydrostatic drives consisting of a variable displacement pump and a low speed high torque (LSHT) motor are frequently used in off-highway vehicles. A variable displacement traction motor is desirable because of the ability to downsize the pump and thereby run the hydrostat at higher efficiency, as well as the possibility of hybridization of the drivetrain. Currently on the market are fixed and discrete speed LSHT radial piston motors and high speed low torque variable displacement axial piston motors. The radial piston motors are displacement dense but are not continuously variable, whereas the axial piston motors are continuously variable but require gearboxes, introducing packaging and robustness concerns. The Variable Displacement Linkage Motor (VDLM) is a LSHT motor that is continuously variable. It offers several benefits over current LSHT motors in that it is highly efficient over its operating range, it has low torque ripple, and it is displacement dense due to its multi-lobed cam and radial packaging. As with the design of any motor, the process is iterative and must be performed whenever performance objectives change. This paper describes an automated method for rapid exploration of the solution space for a variable displacement motor with specific application to the VDLM. This method leads to a motor design that theoretically can achieve 97% efficiency with a torque ripple below 5% at full displacement.","PeriodicalId":262589,"journal":{"name":"ASME/BATH 2019 Symposium on Fluid Power and Motion Control","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122757213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Theoretical Modeling, Analysis, and Experimental Results of a Hydraulic Artificial Muscle Prototype 液压人工肌肉原型的理论建模、分析和实验结果

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-10-07 DOI: 10.1115/fpmc2019-1654

Jonathon E. Slightam, M. Nagurka

引用次数: 2