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The focus of this paper is on the design, development and evaluation of a framework for a fixed-wing UAV to achieve efficient Circulation Control-based (CC) flights. The research presented in this paper is the natural outgrowth of results reported in [1] related to the design and development of an Air Supply Unit (ASU) and plenum design for CC-based Unmanned Aerial Vehicles (UAVs). The framework consists...
Electronic controller unit (ECU) used for controlling sub-systems of complex real life applications like automotive vehicles can pose several challenges. Many times one needs to plan development and testing of controller, when the end vehicle is also under development and hence not available. In such case, hardware in the loop (HIL) approach for testing such controllers emulates the external application...
The primary goal of this research was to advance the single-cylinder engine transient test system. This system is comprised of several subsystem that address the physical dynamics of a multi-cylinder engine in the effort to replicate them on a single-cylinder engine. The subsystems are a thermally controlled water jacket, transient hydrostatic dynamometer system, engine management system and intake...
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 company of excavator hydraulic components will provide universal components, valves for example. But the opening throttle area cannot suitable completely for all design requirements of the excavator. To the whole machine manufacturer, even if the excavator in the same weight may require individual parameters because of the different factors, such as the working device, pump, or engine. As a result,...
Automobile driveline test system is used to test and study the driveline components and assembly (DCA). This paper introduces the structure and principle of the test system, illuminates the application of frequency conversion technology in the test of the DCA. The drive system commands the drive motor to produce the necessary speed (RPM) and torque to simulate engine power. The actual driving resistances...
A transient, six-cylinder diesel engine model for cold test has been developed for analyzing the engine fault through the engine torque curve. The model is based on physically working cycle, thermodynamic theory and dynamics mechanism. The simulation of this model, implemented on Matlab/Simulink, can not only achieve engine faults detection before hot test, but also indicate different causes of engine...
The definition of S transform was respectively deduced from short time Fourier transform and continuous wavelet transform. The simulation experiment indicates that S transform behaves itself with better time-frequency analysis and positioning capability. It is feasible to adopt S transform to investigate the time-frequency characteristics of engine induction noise in acceleration. Engine induction...
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