Software Design of Reconfigurable Hydraulic Test System

2013 ◽  
Vol 467 ◽  
pp. 483-487
Author(s):  
Yan Ling Liu ◽  
Yong Qiu
Keyword(s):  
Software Design ◽  
Hydraulic System ◽  
Performance Test ◽  
Test System ◽  
Pump Light ◽  
Hydraulic Test ◽  
Light Load ◽  
Reconfigurable System ◽  
Wiring Board ◽  
And Function

This paper simply introduces the application of reconfigurable system in hydraulic system, and systematically summarizes the reconfigurable hydraulic test system hardware composition and function of each part. This paper introduces software design of the reconfigurable system. Moreover, this paper not only gives the wiring board address table, also takes an example of the performance test of throttle speed control circuit and the capacity test of hydraulic pump light load to account for reconfigurable of this hydraulic system.

Study on Hydraulic System of Test Stand for Subsea Control Module

2014 ◽  
Vol 548-549 ◽  
pp. 1023-1029
Author(s):  
Hai Xia Gong ◽  
Jian Li ◽  
Yun Peng Wang ◽  
Hui Gang Qu
Keyword(s):  
Hydraulic System ◽  
Control Valve ◽  
Test System ◽  
Test Stand ◽  
Test Method ◽  
Hydraulic Control ◽  
Hydraulic Test ◽  
Control Module ◽  
And Performance ◽  
And Function

This paper firstly explained the working principle of Subsea Control Module (SCM) and function and performance of the electro-hydraulic control valves, and then mathematical model of the electro-hydraulic control valve in SCM was analyzed. The test board was designed according to characters of hydraulic system of the test stand. And on the basis of these, an effective testing method of the electro-hydraulic control valve in SCM has been defined. According to the test method of hydraulic system, we built and analyzed a model of the hydraulic test system by using the AMESim software. Based on the analysis results, the judgments whether or not the test stand could meet the requirements is made.

Design and Characteristic Analysis of Variable Speed Hydraulic System

2012 ◽  
Vol 591-593 ◽  
pp. 179-182
Author(s):  
Yi Jun Zhou ◽  
Jun Xu
Keyword(s):  
Hydraulic System ◽  
Systems Design ◽  
Test System ◽  
Open Loop ◽  
Hydraulic Control ◽  
Variable Speed ◽  
Characteristic Analysis ◽  
Hydraulic Test ◽  
Loop Control ◽  
Detection Technology

The motor variable frequency speed control technology applied to the traditional hydraulic system based on variable speed hydraulic transmission principle with The PLC technology, hydraulic control, detection technology and configuration of organic, it combine PLC as the core of the lower machine control components, PC as the control, researched the variable speed hydraulic test system hardware, software and control systems design. The experiments were performed, realized the variable speed hydraulic experimental platform for open loop control and variable speed hydraulic system parameters real-time monitoring and dynamic display. It overcomes some of the shortcomings of the conventional hydraulic system, improved the efficiency, the hydraulic system run more smoothly and reduce noise. The experiments show that the variable speed hydraulic test bench run well and achieve the purpose.

Analyses of the Long-Term Performance and Tribological Behavior of an Axial Piston Pump Using Diamondlike-Carbon-Coated Piston Shoes and Biodegradable Oil

2007 ◽  
Vol 130 (1) ◽  
Author(s):  
M. Kalin ◽  
F. Majdič ◽  
J. Vižintin ◽  
J. Pezdirnik ◽  
I. Velkavrh
Keyword(s):  
Hydraulic System ◽  
Performance Enhancement ◽  
Test System ◽  
Piston Pump ◽  
Axial Piston Pump ◽  
Hydraulic Test ◽  
Actual Application ◽  
Diamondlike Carbon ◽  
Axial Piston

This work reports on the performance enhancement of a real-scale hydraulic system consisting of diamondlike-carbon (DLC)-coated components in combination with biodegradable oil in long-term experiments under conditions simulating those in an actual application. The performance of a hydraulic axial piston pump with DLC-coated piston shoes was evaluated in a newly designed, dedicated hydraulic test system using fully formulated biodegradable, synthetic ester oil. For comparison, an equal but separated hydraulic system with a conventional commercial pump and stainless-steel shoe surfaces was tested. The tests were run at 85% of the maximum pump load and an oil temperature of around 80°C for a period of 2000h, which corresponds to more than 1yr of continuous 8h∕day operation in an application. A major abrupt oxidation-induced degradation of the oil did not occur in either system; however, the oil from the system comprising the DLC-coated shoes showed noticeably and consistently better results. The wear of the DLC-coated shoes, especially during the running in, was much lower than that in the conventional steel system. Only minor polishing wear was observed on the DLC shoe’s sliding surfaces during the test period, while on the steel shoe’s surfaces, many scratches were found and some erosion of the edges was detected.

scholarly journals Research on Performance and Function Testing of V2X in a Closed Test Field

2021 ◽  
Vol 2021 ◽  
pp. 1-18
Author(s):  
Runmin Wang ◽  
Xinrui Zhang ◽  
Zhigang Xu ◽  
Xiangmo Zhao ◽  
Xiaochi Li
Keyword(s):  
Large Scale ◽  
Traffic Accidents ◽  
Performance Test ◽  
Test System ◽  
Vehicle Speed ◽  
Test Field ◽  
Typical Application ◽  
Traffic Efficiency ◽  
And Function ◽  
Function Testing

The V2X and cooperative vehicle infrastructure system (CVIS), which leverage the efficient information interactions through V2V, V2I, V2P, and V2N, are known as the advanced and effective technology in reducing traffic accidents and improving traffic efficiency. The complex technical characteristics of V2X and highly reliable service demand of typical V2X applications call for the test needs before the large-scale deployment of V2X. It indicates that the performance and function of V2X devices should be systematically tested and evaluated in extreme and boundary conditions of driving and communication environments before being broadly deployed and applied in infrastructures. Motivated by the previously mentioned needs, a performance and function testing scheme of V2X in a closed test field is studied. According to the analytical viewpoint from the physical layer and MAC layer, the proposed research systematically analyses the technical differences of DSRC and LTE-V, which are two typical V2X protocols, in terms of vehicle speed, communication distance, and channel adaptability. Based on the critical practical test needs from the analytical study, a function and performance test system of V2X specifically for the closed test field is proposed. The performance and typical application effectiveness in intersection environment of DSRC and LTE-V are evaluated. The limitation and proposed improvement strategies of these V2X protocols are analytically discussed.

scholarly journals Research on Performance Test System of Space Harmonic Reducer in High Vacuum and Low Temperature Environment

Machines ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Jing Wang ◽  
Zhihua Wan ◽  
Zhurong Dong ◽  
Zhengguo Li
Keyword(s):  
Low Temperature ◽  
High Speed ◽  
Performance Test ◽  
High Reliability ◽  
High Vacuum ◽  
Test System ◽  
Low Noise ◽  
Speed Ratio ◽  
Space Harmonic ◽  
Temperature Environment

The harmonic reducer, with its advantages of high precision, low noise, light weight, and high speed ratio, has been widely used in aerospace solar wing deployment mechanisms, antenna pointing mechanisms, robot joints, and other precision transmission fields. Accurately predicting the performance of the harmonic reducer under various application conditions is of great significance to the high reliability and long life of the harmonic reducer. In this paper, a set of automatic harmonic reducer performance test systems is designed. By using the CANOpen bus interface to control the servo motor as the drive motor, through accurately controlling the motor speed and rotation angle, collecting the angle, torque, and current in real time, the life cycle test of space harmonic reducer was carried out in high vacuum and low temperature environment on the ground. Then, the collected data were automatically analyzed and calculated. The test data of the transmission accuracy, backlash, and transmission efficiency of the space harmonic reducer were obtained. It is proven by experiments that the performance data of the harmonic reducer in space work can be more accurately obtained by using the test system mentioned in this paper, which is convenient for further research on related lubricating materials.

scholarly journals Physical and functional performance assessment in pediatric oncology: a systematic review

2021 ◽  
Author(s):  
Regine Söntgerath ◽  
Julia Däggelmann ◽  
Sabine V. Kesting ◽  
Corina S. Rueegg ◽  
Torge-Christian Wittke ◽  
...  
Keyword(s):  
Systematic Review ◽  
Muscle Strength ◽  
Physical Performance ◽  
Cardiorespiratory Fitness ◽  
Pediatric Cancer ◽  
Motor Performance ◽  
Performance Test ◽  
Functional Mobility ◽  
Cancer Type ◽  
And Function

Abstract Background Research indicates reduced physical performance from diagnosis into survivorship of pediatric cancer patients. However, there is no systematic information or guideline available on the methods to assess physical performance and function in this population. The purpose was to systematically compile and describe assessments of physical performance and function in patients and survivors of pediatric cancer, including cardiorespiratory fitness, muscle strength, speed, balance, flexibility, functional mobility, gait and motor performance test batteries. Methods We searched the databases PubMed, SPORTDiscus, and Cochrane Database and performed abstract and full-text selection of 2619 articles according to the Cochrane Handbook of Systematic Reviews. Information on patients characteristics, assessments, information on validity and reliability, and relevant references was extracted. Results In summary, 63 different assessments were found in 149 studies including 11639 participants. Most studies evaluated cardiorespiratory fitness and muscle strength with the majority conducted off treatment. Some outcomes (e.g. speed) and diagnoses (e.g. neuroblastoma) were severely underrepresented. With the exception of gait, leukemia patients represented the largest group of individuals tested. Conclusions Insufficient data and patient heterogeneity complicate uniform recommendations for assessments. Our results support researchers and practitioners in selecting appropriate assessment to meet their specific research questions or individual daily practice needs. Impact This systematic review includes 149 studies and provides a comprehensive summary of 63 assessments to evaluate cardiorespiratory fitness, muscle strength, speed, balance, flexibility, functional mobility, gait or motor performance test batteries in patients and survivors of pediatric cancer. We present the most studied fields within the pediatric cancer population, which are cardiorespiratory fitness and muscle strength, off treatment phase, and leukemia patients. We propose research priorities by identification of subgroups in terms of cancer type, phase of treatment, and outcome of interest that are underrepresented in studies currently available.

A Manpower Determination Aid Based upon System Performance Requirements

1988 ◽  
Vol 32 (16) ◽  
pp. 1060-1064 ◽  
Author(s):  
K. Ronald Laughery ◽  
Susan Dahl ◽  
Jonathan Kaplan ◽  
Rick Archer ◽  
Gail Fontenelle
Keyword(s):  
Software Design ◽  
System Performance ◽  
Development Program ◽  
General Purpose ◽  
Performance Time ◽  
Methods Development ◽  
Performance Requirements ◽  
Workload Control ◽  
Component Failure Rates ◽  
And Function

This paper discusses two of the six software tools which are being developed as part of the Army Research Institute's MANPRINT Methods development program. The first tool discussed here is known as the System Performance and RAM Constraints Aid or SPARC. This tool permits system designers to determine levels of subfunction performance which are required to achieve function and higher level mission requirements. These levels of subfunction and function performance then serve as requirements which are fed into the second tool, the Manpower Systems Evaluation Aid (MAN-SEVAL). MAN-SEVAL takes as input the system design and then predicts the operator and maintainer manpower required to achieve the required levels of task and function performance. For maintenance manpower evaluation, MAN-SEVAL considers component failure rates, time to perform maintenance, and the mission scenario. For operator manpower and to estimate maintenance task times, MAN-SEVAL conducts an analysis of workload, control/display accessability, and maximum acceptable performance time to allocate tasks across crewmembers. Because all manpower requirements are truly driven by system performance requirements, these two tools are being developed collectively with common data bases and software design. While they are currently being developed for the Army, they will be useful general purpose manpower analysis tools.

Configuration Pump Performance Test System Design Based on Kingview

2011 ◽  
Vol 121-126 ◽  
pp. 3195-3199
Author(s):  
Li Feng Yang ◽  
Jun Yuan ◽  
Wei Na Liu ◽  
Xiu Ming Nie ◽  
Xue Liang Pei
Keyword(s):  
Experimental Data ◽  
Data Processing ◽  
System Design ◽  
Centrifugal Pump ◽  
Performance Test ◽  
Test System ◽  
Performance Parameters ◽  
Time Data ◽  
Pump Performance ◽  
Real Time Data

Use Kingview to acquire and display the centrifugal pump performance parameters for the real-time data, and will stored the collected experimental data in Access databases, using VB database read, and drawing function for the data processing and rendering performance parameters of relationship curves.

Construction of an Artificial Heart Pump Performance Test System

2006 ◽  
Vol 6 (4) ◽  
pp. 151-158 ◽  
Author(s):  
Yingjie Liu ◽  
Paul Allaire ◽  
Yi Wu ◽  
Houston Wood ◽  
Don Olsen
Keyword(s):  
Artificial Heart ◽  
Performance Test ◽  
Test System ◽  
Pump Performance ◽  
Heart Pump
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