The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper describes the function, hardware and software design of structural defect nondestructive testing (NDT) system of a certain unmanned aerial vehicle (UAV) airframe, and analyzes the key technology in the detection system.
The quality of the vacuum booster plays an important role at automobile braking system. Presenting the states of inefficient detection and limited function in vacuum booster test experiment, this paper designs a measurement and control system of vacuum booster multi-channel experiment. Based on the virtual instrumentation the system introduces PROFIBUS-DP to build communication network. With the combination...
In this paper, KZQ-36T-300 multi-model controller is used for separate excitation electric motor which is used for material handing electric vehicle. It can control the motor rate and torque to make it in smooth, mute and low. The electromotor ECU testing system aim at the feature of KZQ-36T-300 multi-model controller, imitate many different road and working condition, imitate accelerator output the...
Upon completion of a successful Distribution Automation (DA) Pilot Project centered in National Grid's upstate New York service territory, it was determined that the reliability improvements delivered by the pilot demonstration justified a much more comprehensive effort to further evaluate additional Smart Grid technologies. The vision was to conduct experiments with a full suite of Smart Grid technologies...
Advancement of computer, software, telecommunication and internet technologies during the last twenty years has fundamentally shifted the focus of the expertise in control-systems engineering (CSE) industry. It is evident that building high-quality modern control systems requires a multi-disciplinary effort as a single engineer simply cannot be an expert in all the related areas, e.g., software/computer...
This paper presents an application of single-phase ac-ac converter with ac output current controls according to requirements of circuit-breaker (CB) testing standard (IEC 60898). Traditionally, the current sources for CB tests are simply designed to use the motor driven tap changing of auto-transformer for ac output current regulation. However, this kind of current source cannot provide the step change...
Simulink/Stateflow (SL/SF) is the primary modeling notation for the development of control systems in automotive and aerospace industries. In model based testing, test cases derived from a design model are used to show model-code conformance. Safety standards such as ISO 26262 recommend model based testing to show the conformance of a software with the corresponding model. From our experiments with...
This paper describes features and applications of a simulation framework for software-in-the-loop testing of realtime embedded control applications. The Validator tool performs time-functional simulation of control software and its execution platform in closed-loop with Simulink plant models. It is based on a discrete event simulator which executes the application software on a host platform and simulates...
Aiming at diagnostic problem of Aircraft gun fire control system, a diagnostic method based on multi-signal flow graph model and information entropy was proposed. Firstly, according to analysis of aircraft gun fire control system's function, its multi-signal flow graph model was built. Then the fault-test dependency matrix was got. Finally the optimal diagnostic strategy was calculated based on information...
Researches on technologies about testing IOPS and data transfer speed of disk arrays in mass storage systems. We propose a parallel testing technology towards the high performance disk array and realize the testing work on the newest developed disk array. By taking researches on many factors which effect disk performance seriously and quantifying them through experiments, so we realize evaluations...
In this paper, we present the design of a simulation framework aimed to support testing of real components in a simulation environment. This enables thorough tests of software components without the need to create their models.
In closed hydraulic driving system with speed sensitive control, using the induction of DA valve to engine speed, the system can adjust the pump displacement automatically, and pump output power and engine input power can get the best match. On the basis of analysis of the speed sensitive control system working principle, the paper found out the influence parameters of variable pump control pressure...
The paper indicates a self-developed testing system of reaction time based on the theory of mesopic vision. The system is supposed to simulate the actual effects of tunnel lighting with varies of light sources, which could be attributed to mesopic visual environment. By adopting lights of different brightness, projecting designated graphs on the screen and capturing reaction time with a button, the...
Model-based testing has a significant impact on test quality and test effort. However, many industrial projects still rely on the traditional testing methods. The biggest concerns against model-based testing are the need of formal knowledge and high initial costs for introducing the formal model. In this paper we show how it is possible to introduce model-based testing to a large scale industrial...
The increased penetration of intermittent renewable energy sources is driving the development of grid-scale energy storage around the world. This paper presents the development of a real-time testing platform for Battery Energy Storage Systems (BESS) in renewable energy applications. To simulate operating conditions in the field, the platform contains a stimulus generation module that can generate...
In this paper, we propose software architecture of behavioural-based robot control system using Active Object Computing Model. Active Object Computing Model is a programming technique that combines the three components, Event Driven Programming paradigm, Event Driven Software Architecture and UML State chart formalism. The scope of this project includes the activities of designing and implementing...
Aperiodic communication and task execution based on events reflect real world behavior. The successfully applied globally asynchronous locally synchronous approach for distributed on-chip level designs gives reason to discuss such an approach on the software level. Problems of periodic design methodologies for timing critical cyber-physical-systems are pessimistic designs and inflexible execution...
State grid corporation of China(SGCC) has issued “Technical rule for PV power station connected to grid (trial)” in July 2009, while claimed that grid-connected testing would be accepted and adopted if the PV power station connecting to the grid. According to the technical rule for PV power station connected to grid, a type of movable field testing platform for low voltage distribution grid-connected...
Single-chip microcomputer as the core of ARM-based intelligent storage system Lower computer. It is capable of handling specify the positioning of items, open, close and feedback the currently state of storage box. ARM systems can achieve serial communications with the Lower computer. PC software systems send commands and record data. Users can query to access information. Telephone alarm would automatically...
During the testing process of the helmet-mounted display's performance, HMD (helmet-mounted display) should aim at the binocular FOV (field of view), so the system using camera instead of eyes to capture image and measure the aberration is designed. The Testing System is based on the optics, integrated with machine, electronics, computer, automatic control technology and image processing technology...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.