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This paper describes a technical problem of obtaining a unique SDL entity identifier using SDL/SystemC co-modeling. The problem occurs during scientific research in co-modeling field as well as work under real projects. Solution consists in redefinition the standard function of SDL simulation kernel for getting access to entity name and then conversion its name to a unique identifier. The paper explains...
This paper deals with the introduction and exploitation of space technologies based on the ERTMS (European Railways Train Management System) architecture bundling the EGNOS-Galileo infrastructures in the train control system, in order to improve performance and enhancing safety, reducing the investments on the railways circuitry and its maintenance. These solutions can be successfully applied for...
The Ocean, inherently unstable and uncertain, is one of the harshest environments to test engineering designs; and with the increasing interest in ocean renewable energies, methods and tools must be developed for faster, reliable, low cost, and effective evaluation of the ocean energy technologies. This paper proposes one such tool/system, a small-scale, portable, wireless and universal Power Control...
This paper proposes a requirement analysis approach to periodic control systems that are widely used as one of the real time systems. By regulating the initial requirement documents with key words in natural language, we compile the regulated requirement documents into an intermediate model specified by SPARDL language with formal syntax and semantics. To make the requirement executable, a prototype...
The fire control system of the mine dispenser vehicle is the core of rocket launching and mine configuration. However it is prone to various faults and failures due to the complex battlefield environments. In this paper the fault testing device for fire control system with diversified functions, easier portability and better performance is designed and developed. The main work is as follows. The hardware...
Platelet aggregation assay is important in mediating platelet thrombus formation for both medical treatment and prevention. Therefore quick and accurate automatic analyzers for clinic are of urgent requirement all the time. In this paper, design and implementation of embedded control and management system for novel automatic platelet aggregometer is presented, which comes to rapid and quantitative...
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...
In this technical note, we discuss an algorithm for the computation of the -norm of transfer functions related to descriptor systems. We show how one can achieve this goal by computing the eigenvalues of certain skew-Hamiltonian/Hamiltonian matrix pencils and analyze arising problems. We also formulate and prove a theoretical result which serves as a basis for testing a transfer...
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...
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