ASME/BATH 2019 Symposium on Fluid Power and Motion Control最新文献

Experimentally Validated Models for Switching Energy of Low Pressure Drop Digital Valves for Lightweight Portable Hydraulic Robots 轻型便携式液压机器人低压降数字阀开关能量实验验证模型

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-12-10 DOI: 10.1115/fpmc2019-1651

Saeed Hashemi, Hannah Mitchell, W. Durfee

{"title":"Experimentally Validated Models for Switching Energy of Low Pressure Drop Digital Valves for Lightweight Portable Hydraulic Robots","authors":"Saeed Hashemi, Hannah Mitchell, W. Durfee","doi":"10.1115/fpmc2019-1651","DOIUrl":"https://doi.org/10.1115/fpmc2019-1651","url":null,"abstract":"\u0000 The most critical factors for a switching valve in a lightweight, portable hydraulic systems are low pressure drop, low power consumption, fast response time, and small size and weight. In this paper, experimentally validated models are proposed for switching energy required by two valve architectures with minimum pressure drop (ball and butterfly valves). The orifice in a hydraulic valve creates a pressure drop across the valve that needs to be minimized especially for low-pressure passive applications. The ideal switching valve for a hydraulic device is one with an opening diameter that is the same as the hose diameter. Several valve architectures with low pressure drop can be motorized to be used as a digital valve. The valve operation mechanism determines the power consumption of the valve. In this paper, the energy to switch state was modeled for two rotary valve types: butterfly and ball. The model was being used to find the best valve configuration for low-pressure digital hydraulics. The model was validated through experiments on a low-pressure ball valve, a high-pressure ball valve, and a low-pressure butterfly valve. The butterfly valve has the lowest switching energy for the same geometry; however, this valve has a small pressure drop due to the presence of the disc in the open position. We conclude that either ball or butterfly valves are suitable for low-pressure, small-scale hydraulic applications.","PeriodicalId":262589,"journal":{"name":"ASME/BATH 2019 Symposium on Fluid Power and Motion Control","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115195050","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: 1

Bio-Based Hydraulic Fluids in Mobile Machines: Substitution Potential in Construction Projects 移动机械中的生物基液压油:在建筑工程中的替代潜力

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-12-10 DOI: 10.1115/fpmc2019-1636

Sebastian Deuster, K. Schmitz

{"title":"Bio-Based Hydraulic Fluids in Mobile Machines: Substitution Potential in Construction Projects","authors":"Sebastian Deuster, K. Schmitz","doi":"10.1115/fpmc2019-1636","DOIUrl":"https://doi.org/10.1115/fpmc2019-1636","url":null,"abstract":"\u0000 This paper deals with the hydraulic oil consumption of mobile working machines. Different mobile working machines are going to be investigated by setting out their hydraulic oil consumption per hour. The substitutable amount of mineral by bio-based hydraulic oil is examined by an exemplary calculation for a construction project. The observations are intended to establish the working medium bio-based hydraulic oil on the lubricants market and to increase its use quantities, especially for mobile machines, with regard to environmental protection. Environmentally friendly lubricants and process materials are used in a wide variety of technical applications. In mobile machines in particular, efforts are being made to further establish bio-based lubricants. Due to unforeseeable accidents and leaks, a considerable amount of lubricants is released into the environment every year. This results in contamination of the affected environment. For this reason, contaminated ground, for example, has to be excavated refurbished after contact with hydraulic oil in order to return them to their original natural state. Bio-based hydraulic oils minimize this risk through their biodegradability and antitoxicity. Despite the proven performance of environmentally friendly hydraulic oil, the market share of biolubricants is stagnating at a constant and very low level. The majority of mobile machines use mineral oil, as working fluid in their hydraulic systems. To evaluate the substitution potential of mineral oil by bio-based oil in construction projects, various mobile machines are considered. In addition to widely used mobile machines like, for example excavators or wheel loaders, road construction equipment is also considered, due to a high hydraulic oil consumption resulting through heavy heat loads.","PeriodicalId":262589,"journal":{"name":"ASME/BATH 2019 Symposium on Fluid Power and Motion Control","volume":"34 1-3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114035402","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: 0

Optimization of a Snap Through Spring for a Hydraulic Valve With Hysteresis Response Behavior 具有迟滞响应特性的液压阀插接弹簧的优化设计

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-12-10 DOI: 10.1115/fpmc2019-1680

M. Scherrer, R. Scheidl, B. Manhartsgruber

引用次数: 0

Method for the Experimental Determination of the Bunsen Absorption Coefficient of Hydraulic Fluids 液压油本生吸收系数的实验测定方法

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-12-10 DOI: 10.1115/fpmc2019-1702

Andris Rambaks, K. Schmitz

引用次数: 1

Monitoring Digital Technologies in Hydraulic Systems Using CUSUM Control Charts 使用CUSUM控制图监测液压系统中的数字技术

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-12-10 DOI: 10.1115/fpmc2019-1603

Farid Breidi, Abdallah A. Chehade, J. Lumkes

{"title":"Monitoring Digital Technologies in Hydraulic Systems Using CUSUM Control Charts","authors":"Farid Breidi, Abdallah A. Chehade, J. Lumkes","doi":"10.1115/fpmc2019-1603","DOIUrl":"https://doi.org/10.1115/fpmc2019-1603","url":null,"abstract":"\u0000 Digital fluid power is a growing field which utilizes electronics and advanced controls to improve efficiencies, energy savings, and productivity in fluid power systems. Often relying on on/off high-speed switching techniques, digital hydraulics relies heavily on the performance of valves, where an error in the valve performance could lead to a major drop in the efficiency and performance of the entire system. Specifically, digital pump/motors are sensitive to valve delay and transition timing which negatively impacts their performance and condition with time. One approach to assessing the performance and efficiency of digital pump/motors is via monitoring its inlet (low) and outlet (high) pressure time-series. Real-time condition monitoring also supports preventive maintenance and provides a better understanding of the dynamics of pump/motors. For condition monitoring, Statistical Process Control (SPC) charts are often designed to detect shift changes in time-series. This paper proposes to construct two cumulative sum (CUSUM) control charts for fast real-time shift detection in the high and low pressure time-series of digital pump/motors. The proposed method will be able to actively detect common misbehaviors in the valves utilized in the digital pump/motor. The model have been successfully tested on a three-piston inline digital pump/motor, but this monitoring technique can be modified and implemented on other digital technology classes where valve performance is key in the success of the system.","PeriodicalId":262589,"journal":{"name":"ASME/BATH 2019 Symposium on Fluid Power and Motion Control","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124963868","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

Application of Data Reduction Techniques to Dynamic Condition Monitoring of an Axial Piston Pump 数据约简技术在轴向柱塞泵动态监测中的应用

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-12-10 DOI: 10.1115/fpmc2019-1685

T. Wiens, Jonathan N Fernandes

引用次数: 2

Measuring the Losses of Hydrostatic Pumps and Motors: A Critical Review of ISO4409:2007 静压泵和马达的损耗测量:对ISO4409:2007的评述

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-12-10 DOI: 10.1115/FPMC2019-1615

P. Achten, R. Mommers, T. Nishiumi, H. Murrenhoff, N. Sepehri, K. Stelson, J. Palmberg, K. Schmitz

{"title":"Measuring the Losses of Hydrostatic Pumps and Motors: A Critical Review of ISO4409:2007","authors":"P. Achten, R. Mommers, T. Nishiumi, H. Murrenhoff, N. Sepehri, K. Stelson, J. Palmberg, K. Schmitz","doi":"10.1115/FPMC2019-1615","DOIUrl":"https://doi.org/10.1115/FPMC2019-1615","url":null,"abstract":"\u0000 ISO 4409 is the most important international standard for measuring the efficiency of hydraulic pumps and motors, the latest edition being 4409:2007. The standard describes methods for determining the steady-state performance in terms of overall efficiency. It also defines equations for calculating the volumetric efficiency of pumps and motors. The hydro-mechanical efficiency is only defined for motors, not for pumps.\u0000 This paper analyses the efficiency and losses of pumps and motors in an alternative way. The preference is on loss analysis instead of efficiencies. Especially the effects of the bulk modulus are considered in a different and more inclusive manner. The new methodology results in a higher total loss for motor and a lower total loss for pumps than the current ISO 4409 standard. Furthermore, it results in significant changes of the hydro-mechanical and volumetric losses. The differences between the new methodology and ISO 4409 become larger for high load pressures.\u0000 The new methodology demands knowledge about the minimum volume of the displacement chamber. The ratio between this volume and the full displacement of a single displacement chamber strongly influences the hydro-mechanical and volumetric losses of the pump or motor. The new methodology is valid for all positive displacement hydrostatic pumps and motors. The volumetric efficiency, as defined in ISO 4409, can still be used as a flow rate factor, but should not be regarded as an energy conversion efficiency.\u0000 The importance of adopting the proposed methodology is further demonstrated by analyzing and comparing the measurement data about a fixed displacement pump and motor, showing the differences in the loss analysis by means of ISO 4409 and the new equations.\u0000 The methodology, observations and validation results presented in this paper are significant and can pave the road for improving the current ISO 4409:2007 standard, which would ultimately benefit the industry.","PeriodicalId":262589,"journal":{"name":"ASME/BATH 2019 Symposium on Fluid Power and Motion Control","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129624195","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: 7

Model-Based Control of a Pressure-Compensated Directional Valve With Significant Dead-Zone 带明显死区压力补偿换向阀的模型控制

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-12-10 DOI: 10.1115/fpmc2019-1664

Santeri Lampinen, Janne E. M. Koivumäki, J. Mattila, Jouni Niemi

引用次数: 2

Air Solubility Measurements and Modeling of Brake Fluids 制动液的空气溶解度测量和建模

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-12-10 DOI: 10.1115/fpmc2019-1646

A. Eisele, Simon Sagmeister, Michael Schneider, M. Lienkamp

引用次数: 0

On the Energy Efficiency of Dual Prime Mover Pump-Controlled Hydraulic Cylinders 双原动机泵控液压缸的能效研究

ASME/BATH 2019 Symposium on Fluid Power and Motion Control Pub Date : 2019-12-10 DOI: 10.1115/fpmc2019-1642

Petter H. Gøytil, D. Padovani, M. Hansen

{"title":"On the Energy Efficiency of Dual Prime Mover Pump-Controlled Hydraulic Cylinders","authors":"Petter H. Gøytil, D. Padovani, M. Hansen","doi":"10.1115/fpmc2019-1642","DOIUrl":"https://doi.org/10.1115/fpmc2019-1642","url":null,"abstract":"\u0000 This paper concerns the energy efficiency of a special class of pump-controlled hydraulic cylinders utilizing two prime movers. The performance of such circuits has been studied previously motivated by their capability of providing an actuator stiffness similar to that of servo valve-controlled systems. This characteristic may improve performance and robustness in applications requiring feedback control. In this paper, the presence of losses similar to that of fluid throttling, in the sense that they occur even in the absence of component inefficiencies, are demonstrated for such circuits and shown to degrade the overall energy efficiency of the system. The conditions under which such losses occur are derived analytically as a function of system parameters and operating conditions and two solutions for their elimination are proposed and verified analytically and numerically. Several implementation options are compared in terms of energy efficiency and component sizing and benchmarked to a conventional servo valve solution. It is shown that with the appropriate implementation, an energy efficiency up to ten times greater than that of a conventional servo valve system may be expected.","PeriodicalId":262589,"journal":{"name":"ASME/BATH 2019 Symposium on Fluid Power and Motion Control","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126029012","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: 9