Design of Digital Test Platform for Diesel Engine

2013 ◽  
Vol 333-335 ◽  
pp. 2314-2318
Author(s):  
Shu De Ji ◽  
Zhen Jia ◽  
Zhi Hong Wang ◽  
Ya Jun Liu ◽  
Xiao Yan Yuan ◽  
...  
Keyword(s):  
Control System ◽  
Cooling Water ◽  
Test Method ◽  
Test Results ◽  
Water Control ◽  
Overall Design ◽  
Test Conditions ◽  
Test Platform ◽  
Digital Test ◽  
Manual Manipulation

For the problem of manual manipulation and data asynchronous acquisition, the opinion of digital test was introduced. Based on the existing equipment, control and test method, the overall design of test platform was put forward. In the following, the data sharing, the software control system, dynamometer system, lube oil control system and cooling water control system were designed respectively. In the end, the digital test platform was developed. Under the new test platform, the test conditions can be adjusted automatically, the measurement device can be remote-controlled, the test data can be collected and recorded in synchronization and the test results can be sent to the designers in time.

The Research of IC Test Based on LTX-77 Test System

2014 ◽  
Vol 496-500 ◽  
pp. 1176-1179
Author(s):  
Li Tan ◽  
Yu Fang
Keyword(s):  
Test Object ◽  
Test System ◽  
Test Method ◽  
Test Results ◽  
Analog Ic ◽  
Test Platform ◽  
Logic Functions ◽  
Actual Test ◽  
Ic Test

LTX-77 test system is a large IC test system that is used for various kinds of analog IC, digital IC and analog digital mixed IC. It can be used to test DC parameters, AC parameters and logic functions. In the paper, the IC test platform is LTX-77 test system. IC ADC0804 was tested as the test object. The test method of IC is described in the view of actual test. The test results show that the test system is convenient and accurate, which has important practical value for IC manufacturers and users.

Model Based Performance Correction Methodology — A Case Study

2014 ◽  
Author(s):  
Koldo Zuniga ◽  
Thomas P. Schmitt ◽  
Herve Clement ◽  
Joao Balaco
Keyword(s):  
Control System ◽  
Control Systems ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Performance Test ◽  
Test Results ◽  
Model Based ◽  
Test Conditions ◽  
Partial Load

Correction curves are of great importance in the performance evaluation of heavy duty gas turbines (HDGT). They provide the means by which to translate performance test results from test conditions to the rated conditions. The correction factors are usually calculated using the original equipment manufacturer (OEM) gas turbine thermal model (a.k.a. cycle deck), varying one parameter at a time throughout a given range of interest. For some parameters bi-variate effects are considered when the associated secondary performance effect of another variable is significant. Although this traditional approach has been widely accepted by the industry, has offered a simple and transparent means of correcting test results, and has provided a reasonably accurate correction methodology for gas turbines with conventional control systems, it neglects the associated interdependence of each correction parameter from the remaining parameters. Also, its inherently static nature is not well suited for today’s modern gas turbine control systems employing integral gas turbine aero-thermal models in the control system that continuously adapt the turbine’s operating parameters to the “as running” aero-thermal component performance characteristics. Accordingly, the most accurate means by which to correct the measured performance from test conditions to the guarantee conditions is by use of Model-Based Performance Corrections, in agreement with the current PTC-22 and ISO 2314, although not commonly used or accepted within the industry. The implementation of Model-based Corrections is presented for the Case Study of a GE 9FA gas turbine upgrade project, with an advanced model-based control system that accommodated a multitude of operating boundaries. Unique plant operating restrictions, coupled with its focus on partial load heat rate, presented a perfect scenario to employ Model-Based Performance Corrections.

A Hybrid Testing Method to the Application of Test Case Generation of the Simulation of CTCS-3 On-Board Subsystem

2013 ◽  
Vol 341-342 ◽  
pp. 984-989
Author(s):  
Kang Feng ◽  
Kai Cheng Li
Keyword(s):  
Control System ◽  
Test Method ◽  
Test Sequence ◽  
Simulation Test ◽  
Hybrid Testing ◽  
Train Control ◽  
Testing Method ◽  
Train Control System ◽  
Test Platform ◽  
At Home

As an important part of the CTCS-3 train control system, the on-board subsystem is a safety critical system, and it plays an important role in assuring the safety of train. In this essay, we choose a hybrid testing method combined with the advantage of black-box and white-box testing method in the test of the Simulation of on-board subsystem of the CTCS-3 train control system. The main idea is to divide the tested system into several functional parts, and then test them step by step. At last, we use an example to show the advantage of this testing method in reducing the number of test cases. 1 Current situation in the testing of train control system at home and abroad Train control system plays an important role in ensuring the operational safety of the train, At home and abroad researchers attach great importance to the testing of the train control system, and also a lot of research has been done. The simulation test makes it easier for the testers to work in the lab instead of the field, so that it reduce the human and material costs, and the test environment can be controlled and repeatable easily. Besides, the special environment of the site can also be simulated. University of Florence in Italy has developed the loop of the ATP / ATC test system based on the simulation technology HIL (Hardware in Loop), it provides an effective solution to the test of ATP speed measurement device. CEDEX LIF laboratory in spain simulation has used the test method of simulation to establish the Eurocab test platform, and developed a number of testing tools, moreover, they have defined test sequence. Test sequence generation and viewing, test management and test result analysis and evaluation function have also achieved. Beijing Jiaotong University in China rail traffic control and security National Key Laboratory of CTCS-3 train Control System has also established simulation test platform, so that simulation test can be performed.

Dynamic Optimal Control for Metallurgical Continuous Casting Secondary Cooling Water Design of Adaptive Systems

2014 ◽  
Vol 926-930 ◽  
pp. 1322-1325
Author(s):  
Jin Hong Zhang ◽  
Jun Li Jia ◽  
Shu Yan Zhang
Keyword(s):  
Control System ◽  
Continuous Casting ◽  
Water Distribution ◽  
Continuous Casting Machine ◽  
Cooling Water ◽  
Distribution Model ◽  
Secondary Cooling ◽  
Water Control ◽  
Technical Requirements ◽  
And Control

In conventional continuous casting secondary cooling water control method on the basis of the proposed adaptive control strategy for water distribution.According to the production characteristics of slab continuous casting machine, the establishment of a dynamic soft reduction model of secondary cooling water control system and online. by introducing water distribution model and control system implementation, Through the adjuster to optimize performance, make the water distribution system in less money subject to meet the technical requirements of good results. Simulation and application of results showed that the effectiveness of the proposed model and control algorithms, speed control system for the disturbance has a good target temperature following the performance.

Pseudodynamic Capabilities of the ELSA Laboratory for Earthquake Testing of Large Structures

1996 ◽  
Vol 12 (1) ◽  
pp. 163-180 ◽  
Author(s):  
J. Donea ◽  
G. Magonette ◽  
P. Negro ◽  
P. Pegon ◽  
A. Pinto ◽  
...  
Keyword(s):  
Control System ◽  
Dynamic Testing ◽  
Time Integration ◽  
Dynamic Test ◽  
Test Method ◽  
Test Results ◽  
Digital Control System ◽  
Distinctive Features ◽  
Large Structures ◽  
Integration Algorithms

The paper describes the distinctive features of the pseudo-dynamic test method as implemented at the largest European reaction-wall facility. Both hardware and software aspects are considered. Particular attention is devoted to the digital control system and to the time integration algorithms. A test-restart procedure well suited for stiff/brittle structures and a coupled numerical-experimental substructuring technique allowing realistic earthquake testing of very large structures are included. Finally a prospective view of continuous pseudo-dynamic testing is introduced. Selected test results illustrate the advantages of the presented features.

Commissioning brownstock washing controls for an evaporator limited mill

TAPPI Journal ◽  
2016 ◽  
Vol 15 (7) ◽  
pp. 459-464
Author(s):  
RICARDO SANTOS ◽  
PETER HART
Keyword(s):  
Control System ◽  
Negative Impact ◽  
Black Liquor ◽  
Pulp Mill ◽  
Control Program ◽  
Separation Point ◽  
Water Control ◽  
Oxygen Delignification ◽  
Percentage Points

An automated shower water control system has been implemented to reduce the volume and variability of weak black liquor being sent from the pulp mill to the evaporators. The washing controls attempt to balance the need for consistent and low soda carryover to the bleach plant with consistently high weak black liquor solids being sent to the evaporators. The washer controls were implemented on two bleachable grade hardwood lines (one with oxygen delignification, one without oxygen delignification) and one pine line. Implementation of the control program resulted in an increase in black liquor solids of 0.6 percentage points for the hardwood lines. Significant foam reduction was realized on the pine line since the pine black liquor solids were able to be consistently maintained just below the soap separation point. Low black liquor solids excursions to the evaporators were eliminated. Bleach plant carryover was stabilized and no negative impact on chemical consumption was noticed when controlling weak black liquor solids to recovery.

Nutrient Input and Trophic Status of the “Neue Donau”, a High-Water Control System along the River Danube in Vienna, Austria

1990 ◽  
Vol 22 (5) ◽  
pp. 137-144 ◽  
Author(s):  
M. T. Dokulil ◽  
G. A. Janauer
Keyword(s):  
Water Quality ◽  
Control System ◽  
Trophic Status ◽  
High Water ◽  
Nutrient Concentrations ◽  
Nutrient Input ◽  
Water Control ◽  
Trophic Conditions ◽  
River Danube ◽  
High Nutrient

The system “Neue Donau” functions as a control system for high waters of the river Danube and is an important recreational area for many people. Water quality and trophic status of the water body is thereforeof prime importance. The high nutrient concentrations of the river Danube (P-tot 238±41µg/l, N-tot 2.53±0.78 mg/l) reach the system via groundwater seepage. Present conditions in the basin of Neue Donau are,as a result of this nutrient in-flux,eutrophic to hypertrophic. Average values during the summer period have declined from 366 µg/l total phosphorus to 78 µg/l, and from 86 µg/l chlorophyll-a tol7µg/l between the years 1985 and 1988. However, a dam which is planned in the river at Vienna will permanently raise the water level of the river thus increasing the the groundwater flow in the direction to the Neue Donau and therefore the nutrient input which will enhance trophic conditions in the impoundment. Since macrophytes play an important role in one part of the system macrophyte management together with measures along the river are some of the suggested strategies to keep the system Neue Donau at acceptable trophic conditions and good water quality.

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