TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY最新文献

Relationship between the Complex Parameters of Normalized Termination Impedance and the Standing Waves of Pressure Pulsation in a Hydraulic Pipe Line: (Analysis of the Transition of Resonant Mode by Numerical Calculation)@@@(数値計算による共振モードの遷移の解析) 归一化终端阻抗复参数与液压管路压力脉动驻波的关系:(数值计算的谐振模式转换分析)@@@(英文)

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2013-09-15 DOI: 10.5739/JFPS.44.102

T. Ichiyanagi, T. Kuribayashi, T. Nishiumi

{"title":"Relationship between the Complex Parameters of Normalized Termination Impedance and the Standing Waves of Pressure Pulsation in a Hydraulic Pipe Line: (Analysis of the Transition of Resonant Mode by Numerical Calculation)@@@(数値計算による共振モードの遷移の解析)","authors":"T. Ichiyanagi, T. Kuribayashi, T. Nishiumi","doi":"10.5739/JFPS.44.102","DOIUrl":"https://doi.org/10.5739/JFPS.44.102","url":null,"abstract":"It is well known that the amplitude of pressure pulsation becomes extremely high when the frequency of the pump rotational speed coincides with the resonant frequency of the pressure pulsation standing waves. In the previous report, the authors investigated the relationship between the resonant modes of the standing wave arising in the connecting pipe and the termination characteristics of the hydraulic circuit. Although the influence of the two terminations, a restrictor and volume, on the resonant modes was clarified, the termination impedance contains only a real number or a purely imaginary number in terms of the complex characteristic. In this report, a further investigation of the influence of the complex parameters of termination impedance characteristics is undertaken. In particular, the non-dimensional pressure pulsation in the connecting pipe is examined by the numerical calculation to understand the resonant phenomena of a standing wave for the complex parameters of termination impedance. Consequently, the transition of the resonant mode between the “both ends closed” mode and the “pump end closed and termination end opened” mode is confirmed. The characteristics of the transition resonant mode are clarified, and it is found that pressure pulsation also becomes extremely high under the transition resonant mode conditions.","PeriodicalId":216805,"journal":{"name":"TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116242101","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

Performance Test of an AC Servomotor Drive Valveless Hydraulic Power Steering by Using a Passive Type Electro-hydraulic Load Simulator 利用被动式电液负载模拟器测试交流伺服电机驱动无阀液压助力转向的性能

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2013-07-15 DOI: 10.5739/JFPS.44.75

Yasukazu Sato, K. Hirano, Hirohisa Tanaka

引用次数: 1

A Study on the Large-Scale Bilateral Manipulator: (1st Report : Concept Planning and Experiment using a Single Lnik Model)@@@(第１報コンセプトの立案と単軸モデル実験) A Study on the Large-Scale Bilateral Manipulator:(第一篇报告:Concept Planning and Experiment using a Single Lnik Model)@@(第1报概念的立案和单轴模型实验)

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2013-05-15 DOI: 10.5739/JFPS.44.55

H. Yoshinada, Shunya Takeda, S. Yokota

引用次数: 1

Energy Saving of Oil Hydraulic Pump Unit by Idling Stop Using Accumulator: (2nd Report : Energy saving at constant load flow rate)@@@(第２報, 負荷流量一定時の省エネルギー) 油液压泵机组空转停止利用蓄能器节能:(第二次报告:恒负荷流量下的节能)@@@

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2013-03-15 DOI: 10.5739/JFPS.44.29

K. Sugimura, Sinpei Ota, Katsumasa Suzuki, K. Nonaka

{"title":"Energy Saving of Oil Hydraulic Pump Unit by Idling Stop Using Accumulator: (2nd Report : Energy saving at constant load flow rate)@@@(第２報, 負荷流量一定時の省エネルギー)","authors":"K. Sugimura, Sinpei Ota, Katsumasa Suzuki, K. Nonaka","doi":"10.5739/JFPS.44.29","DOIUrl":"https://doi.org/10.5739/JFPS.44.29","url":null,"abstract":"As a result of a shortage of energy resources such as oil and the need to protect the earth’s environment, energy saving efforts have been made in a number of fields. In the case of hydraulic equipment, energy saving in pump units is key because this unit is the major consumer of energy. Up to the present, variable-displacement hydraulic pump units (VD pump units) and inverter-control hydraulic pump units (INV pump units) have been widely employed. Here the authors propose the use of an intermittently operated hydraulic pump unit coupled with an accumulator (ACC pump unit). In a previous report, the superiority of the ACC pump unit was demonstrated through an experiment using a modeled machine tool and a simplified load model. In this report, we compare electric power consumption, pump output pressure, rotation speed and efficiency of the VD pump unit, INV pump unit and ACC pump unit when hydraulic fluid is supplied to the load at a fixed flow rate. In addition, the effects of the accumulator volume and the pressure ratio between the upper and lower limits on efficiency and the ON-OFF switching period of the ACC pump unit are determined.","PeriodicalId":216805,"journal":{"name":"TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114082400","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

A Study on Design and Estimation of Bubble Eliminator: (1st Report : Selection of Diameter of Vent Port)@@@(第１報, 放気口径の選定) 消泡器的设计与评价研究:(第一报告:排气口直径的选择)@@@(第1号，中国科学院院士，中国科学院院士，中国科学院院士)

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2013-03-15 DOI: 10.5739/jfps.44.43

Sayako Sakama, R. Suzuki, Yutaka Tanaka

{"title":"A Study on Design and Estimation of Bubble Eliminator: (1st Report : Selection of Diameter of Vent Port)@@@(第１報, 放気口径の選定)","authors":"Sayako Sakama, R. Suzuki, Yutaka Tanaka","doi":"10.5739/jfps.44.43","DOIUrl":"https://doi.org/10.5739/jfps.44.43","url":null,"abstract":"Hydraulic systems feature compact, high-output power and rapid response. However, when air bubbles are mixed into the hydraulic oil, they lower the efficiency of hydraulic systems and contribute to instrument malfunctions. Therefore, it is important to eliminate these bubbles from the oil. Our project team has been developing an active bubble elimination device termed a bubble eliminator, which removes air bubbles using a swirl flow. The shape of the device affects the removal performance, so the choice of shape parameters is key to improved performance of the device. The purpose of this study is to optimize the shape parameters of the bubble eliminator. We focus particularly on the optimal diameter of the vent port. In order to determine this parameter, flow behaviors in the bubble eliminator are investigated in the laboratory with transparent bubble eliminators and numerical analysis of the experimental conditions. The validity of numerical simulation is verified by comparing its results with flow patterns obtained from image photos of an experimental flow visualization. Numerical analysis is carried out under fixed conditions, and an optimal diameter for the vent port is determined.","PeriodicalId":216805,"journal":{"name":"TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114270796","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

Characteristics on Sliding Torque of Blades in a Slide-Blade Type Air Pump 滑叶式气泵叶片滑动力矩特性研究

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2013-01-15 DOI: 10.5739/JFPS.44.1

T. Ueki, K. Inaba

{"title":"Characteristics on Sliding Torque of Blades in a Slide-Blade Type Air Pump","authors":"T. Ueki, K. Inaba","doi":"10.5739/JFPS.44.1","DOIUrl":"https://doi.org/10.5739/JFPS.44.1","url":null,"abstract":"Slide-blade type air pumps are utilized in printing machines as an air source which provides both the action of air blowing and suction necessary for the paper handling. In the air pump, a large part of the motor power is occupied by the sliding friction between blades and cylinder surface of the casing. So, it is necessary to clarify the mechanism of the friction quantitatively in order to design practical dry air pumps with longer life and less energy consumption. In the paper, ﬁ rst of all, the sliding force by a single blade was measured experimentally through the axle torque, and its mechanism was made clear. Then, the torque by multi-blades was investigated similarly, and its characteristics which should be aﬀ ected by chamber pressure were analyzed. As a result, the following conclusions are obtained: １）． The sliding torque by a single blade indicates a cyclic change with rotor rotation, the absolute value of which is far larger than the theoretical one estimated by the centrifugal force to the blade solely. ２）． The sliding torque by a single blade is aﬀ ected signiﬁ cantly due to the constraint of the blade movement at the rotor slit. Speciﬁ cally, the sliding torque is the largest around a point between the maximum protrusion hight and the maximum thrust speed. Therefore, the set angle of rotor slits is an important parameter for the blades behavior. ３）． In actual air pumps with multi-blades, the air pressure in the blade chambers as well as in the bottom space of the rotor grooves seriously aﬀ ect the blade motion along the rotor slit. Therefore, air holes connecting the bottom of the rotors slits as well as air slots formed on the blade side-face are eﬀ ective for decreasing the sliding torque.","PeriodicalId":216805,"journal":{"name":"TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY","volume":"118 S1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131776631","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

Flow Rate Control using Particle Excitation Valve with Non-linear Compensation 非线性补偿颗粒激励阀的流量控制

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2012-09-15 DOI: 10.5739/JFPS.43.117

D. Hirooka, K. Suzumori, T. Kanda

引用次数: 1

Wrist Rehabilitation Using Pneumatic Parallel Manipulator : Proposal of Rehabilitation Based on EMG Signal 气动并联机械臂腕部康复:基于肌电信号的康复方案

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2012-05-15 DOI: 10.5739/JFPS.43.85

M. Takaiwa, T. Noritsugu, D. Sasaki

引用次数: 9

STUDY ON ENERGY EFFICIENCY OF WATER HYDRAULIC FLUID SWITCHING TRANSMISSION 水液压换向传动的能效研究

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2011-10-27 DOI: 10.5739/JFPS.42.19

W. Kobayashi, K.Ito K.Ito, S. Ikeo, Tsuyoshi Yamada, Koji Takahashi, K. Ito

引用次数: 1

A Study of Flow Force on a Spool Valve 滑阀上的流动力研究

TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY Pub Date : 2011-01-15 DOI: 10.5739/JFPS.42.13

Kazuhiro Tanaka, Kouki Tomioka, F. Shimizu, M. Fuchiwaki

引用次数: 2