Design Of Test Bench Research Articles

Design and manufacture of test bench for simulation of movement of a vehicle driven by electric motor

The article describes the stages of the project development, design and technological solutions in the production of units of the test bench for simulation of movement of a vehicle driven by electric motor.

The Design of Plate Heat Exchanger Prototype Test Bench Based on Similarity Theory

The new plate heat exchanger with modular design is easy to realize the large-scale. It also has the performance advantage of low pressure drop and anticorrosion. The oil refining, chemical industry, steel and iron, metallurgy, electric power industries will be the future main application of it. But the designed engine for product is too big, the production cost is high, the production time is long, and it does not suit for processing experiment. Based on the above product structure and similarity theory, the paper designs another small type of reflux plate heat exchanger and the corresponding bench for testing.

Design of Multicopter Test Bench

 Abstract—In this paper we have designed and implemented a complete system of quad rotor stability mechanism. Starting with a Single-axis Implementation of a Quad rotor, we proceeded to create a Quad rotor system inclusive of Quad rotor model, a mathematically modeled and simulated MatLab module along with a LabView graphics interface userface. The purpose of this project is to design and implement a Quad Rotor stability control system that is capable of better stability augmentation and control authority for different load capacities. The magnitude of throttle applied and the corresponding shift in the position of the Quad Rotor from equilibrium must be accurately obtained for better control authority. The project consists of the development of four main areas, the first being the on-board measurement systems including gyroscopes and Accelerometers, the communication systems, the control of the individual rotors and the main processor which pull all these together. The project also required the development of a method of allowing the user to communicate to the Quad Rotor which will be achieved using LabView. In addition to these, a software implementation of the mathematical model of the system will be designed using Matlab. Finally, the stability of the Quad Rotor will be achieved using a customized PID software code.

Design and Realization of Durability Test-Bed for New Developed Hydraulic Pump

In order to satisfy the practical requirement, Durability test-bed for new developed hydraulic pump is designed which mainly includes design of hydraulic systems, design of data acquisition and processing system and design of test bench and electronic control system. According to application, it shows that the Durability test-bed is effective for durability test of new developed hydraulic pump and it can help to improve the design of hydraulic pump

Hydraulic Test Bench Design on Travel Drive System of Platform Lorry

In order to study the platform lorry’s travel and drive system, based on the prototype of real platform lorry，the system was properly simplified in engineering application under the circumstance of fully satisfication for control strategy. A method of test-bench contruction based on three variables of engine, pump and motor was provided, furthermore, detailed analysis and calculation for the selection and matching of system major parts was carried out, and the test-bench of the platform lorry’s travel and drive system was established. The test-bench mentioned above could also be used for the hydraulic system laboratory research of platform lorry or other similar models.

Teaching Design of Video Processing Circuits

Design of a video processing circuit requires extensive understanding of digital systems and image processing algorithms. A typical design process involves different tools and languages, which make the task difficult for undergraduate students. We present a teaching method using a web-based tool for initial algorithm study and test bench design. The algorithm is later described in a high-level language, optimised and implemented on a custom programmable logic platform.

Design and Control Implementation of AC Electric Power Steering System Test Bench*

Using AC motor is an important development trend of electric power steering system, and in this paper, we proposed a design of AC electric power steering system test bench. The paper introduced the bench structure, working principle and main components selection first, and then given the implementation scheme of test bench's three functions: simulation of the road resistance, power assistant control and data acquisition. The test results showed the feasibility of the test bench.

Optimum Design of Engine Test Bench Based on Finite Element Analysis

A test bench of vehicle engine is designed and the three-dimensional solid model is established in UG software. Then the model is imported into ANSYS software to conduct static stress analysis, the stress and deformation distribution of test bench are obtained, referenced the results and the bracket are optimized to improve support ability, the maximum stress and the maximum displacement of test bench decreased 66.9% and 76.9%, respectively. Lastly modal analysis of test bench is performed, the chassis base is strengthen design according to the first-order mode shape, then the first natural vibration frequency is heightened 91.0%, it is far away from the engine excitation frequency range, the stability of test bench is enhanced.

Experimental study about the effects of disc chipper settings on the distribution of wood chip size

Abstract Nowadays wood should be of principal sources of biomass. This wood is transformed into chips in order to increase automatic operations and to decrease the technical effort needed at the energy conversion plant. Typical high quality chips, which are used to feed small woodchip boilers, vary in size from 10 × 10 × 5 mm to 15 × 15 × 8 mm. Chips that are relatively square and flat are easily conveyed, augured, and fed into the system smoothly. We are mainly interested in the raw material of inferior quality. A disc chipper test bench was constructed in our laboratory to study the chipping process in cutting conditions which are similar to those used in the industry. The test bench design allows many factors to be varied include cutting speed, feed per tooth, cutting angles, anvil height and cutting direction. In this paper, we attempt to understand the effect of several factors on chip size distribution. Four feeds per tooth, four cutting angles, two sharpness angles and three cutting speeds were chosen to cut wet logs of oak and fir wood, while the other factors remained constant. The results are similar for both oak and fir. The proportion of small chips decreases when we increase the feed per tooth, the cutting angle and the sharpness angle, whereas it increases when the cutting speed is increased. The feed per tooth and the cutting speed have a linear effect on the variations in the size distribution, while the cutting angle has a non-linear effect on these variations.

Automated Test Bench for Study of the Fuel Injection Process

The paper presents the design, implementation and use of an automatic test bench for the injection process, using an economical solution for recording successive images of a fuel jet injected into a chamber pressurized with nitrogen at ambient temperature, with a camera. Injection pressure can be adjusted with high precision using a closed loop PID control (closed loop). The test bench operation is synchronized by a computer-assisted system. Experimental results are also summarized for research of the diesel injection process.

Study of the ELBE RF-couplers with a new 1.3 GHz RF-coupler test bench driven by a resonant ring

To study the performance of the ELBE RF-couplers until their limits a 1.3 GHz resonant ring driven by a 10 kW CW klystron (VKL7811St, CPI) has been built to operate a RF-coupler and RF-window test bench. The ring allows tests with RF power up to 100 kW in continuous wave (CW) mode and up to 200 kW in pulsed mode. Details of the resonant ring, the test bench design and results of the ELBE RF-coupler tests will be presented.

Guaranteed robustness bounds for matched-disturbance nonlinear systems

This paper considers input affine nonlinear systems with matched disturbances and shows how to compute an a priori upper bound of the H ∞ attenuation level achieved by the optimal L 2 controller and the suboptimal H ∞ central controller. The case where the disturbance contains a constant term is also discussed. These bounds are shown to depend only on the function mapping the control input to the performance variable. This result is used to derive a robust control design for a special, but practically important, class of non-input affine nonlinear systems consisting of the series connection of a nonlinear state and input dependent map and of a nonlinear input affine dynamical system. Approximate inversion of the nonlinear static map leads to a robust control problem which fits into the framework. The effectiveness of the theoretical results is shown by its use for the robust control design of a diesel engine test bench.

Cogging-Torque Analysis on Permanent-Magnet Machines by Simulation and Measurement (Analyse des Rastmoments von permanentmagneterregten Maschinen mittels Simulation und Messung)

Cogging torque is an effect to be considered in the design and optimization process of Permanent-Magnet Machines (PMM). Many simulation methods have been proposed. Verification of provided results require measurements of the cogging torque. Measuring it is, though, no easy task. Existing measurement setups often do not decouple the influence of the drive and the measured PMM. Hence, we propose a simple yet accurate test bench design for the measurement of cogging torque. The studied PMM is simulated using the Finite-Element Method (FEM) numerically, and the results are compared.

Design of a diesel reformer coupled to a PEMFC

A strategic alliance has been established between Spanish partners to develop a 5 kW diesel fuel processor for an integrated operation with a PEMFC. Oxidative Steam Reforming followed by a novel WGS reactor in one step and a PROX delivers a stream with a maximum CO of 20 ppm, able to feed PEM without poisoning the anodes. Paper presents a detailed description of the work carried out to obtain novel catalyst (main section of this paper), design of the reformer and preliminary operational results. Data concerning how catalysts were prepared and catalytic activity measurements for OSR, WGS and PROX is presented as well design of test bench and control. From an experimental point of view some results, at laboratory scale, are presented concerning OSR, WGS and PROX and as well preliminary results concerning global operation of the prototype.

Design of the ANTARES LCM-DAQ board test bench using a FPGA-based system-on-chip approach

The System-on-Chip (SoC) approach consists in using state-of-the-art FPGA devices with embedded RISC processor cores, high-speed differential LVDS links and ready-to-use multi-gigabit transceivers allowing development of compact systems with substantial number of IO channels. Required performances are obtained through a subtle separation of tasks between closely cooperating programmable hardware logic and user-friendly software environment. We report about our experience in using the SoC approach for designing the production test bench of the off-shore readout system for the ANTARES neutrino experiment.

Electro-thermomechanical characterization of Ti-Ni shape memory alloy thin wires

The use of shape memory alloys (SMA) as smart structures and other modern applications require a previous evaluation of its performance under load as well as a training procedure. In general, these requirements lead to the design and assembly of a specific test bench. In this work, an experimental set-up was specially designed to perform the electro-thermomechanical characterization of SMA wires. This apparatus was used to determine the strain-temperature (epsilon - T) and electrical resistance-temperature (R - T) hysteretic characteristics curves of a Ti-Ni shape memory wire (90 mm in length and 150 µm in diameter) under mechanical load. The SMA wire is loaded by means of constant weights and a controlled system for injection of electrical power allows performing the heating-cooling cycles. The obtained hysteretic epsilon - T and R - T characteristics curves for some levels of applied loads are used to determine important shape memory parameters, like martensitic transformation temperatures, temperature hysteresis, temperature slopes and shape memory effect under load. These parameters were in accord with the ones found in literature for the studied SMA wires.

Color Picture Tubes Life Test Bench

In this paper the particularities of color picture tubes life testing and test bench design are considered. The testing system and subsystems structures and engineering solutions are given. The software characteristics are discussed. The hardware and software of modern test bench must be flexible, as are shown. Ill. 5, bibl. 4 (in Lithuanian; summaries in Lithuanian, English and Russian).

Cardiac valve prosthesis flow performances measured by 2D and 3D-stereo particle image velocimetry

The present paper reports the design and performance tests of a new artificial heart valve test bench that was specially devised to employ Particle Image Velocimetry (PIV) to perform flow analysis. Among the useful characteristics of this new test bench are the repeatable high quality of the developed flow, the generation of time-variable flow with a feedback-controlled actuator, high versatility in changing and controlling the flow parameters (average rate and the beat frequency), and good optical access for PIV measurements. Different chambers and flow conditions have been used to perform tests using 2D-PIV and 3D-StereoPIV. The aim of such tests were to study the fluid dynamical characteristics of mechanical and biological cardiac prostheses, and to evaluate the procedures used to reduce measurement uncertainty due to the 3D components of the pulsatilee flow through the cardiac valve prostheses. It has been possible to observe the evolution of the complete 2D and 3D flow disturbance induced by the valve prostheses for each phase of their cycle on the upstream and downstream volumes.

Fuel cell test bench design and manufacture By Marie Straumann, Marc Dupont, Daniel Buttin and Jean-Claude Dubois, Sodeteg, France

This article describes Sodeteg's activity in the field of test benches for fuel cell assessment. The company has produced several test benches for its own process developments in order to evaluate, optimise and qualify systems for further industrialisation. This experience has been applied to the design and manufacture of test stations for fuel cell assessment, either for customers or for its own use. These benches can be used for fuel cells fed with either hydrogen (PEMFCs) or methanol (DMFCs), and are designed to operate with air and/or oxygen. Several test benches have been made for single cell or stack assessment, in particular, for the European NEMECEL project for the design and demonstration of a 1 kW direct methanol fuel cell (DMFC) with considerable marketing potential at industrial level.

BOAR: an advanced HW/SW coemulation environment for DSP system development

The BOAR emulation system is targeted to hardware/software (HW/SW) codevelopment of advanced embedded DSP and telecom systems. The challenge of the BOAR system is efficient customization of programmable hardware, and dedicated partitioning routine to target applications and structures, which allows quite high overall system performance. The system allows multiple configurations for communication between processors and field programmable gate arrays (FPGAs) making the BOAR system an efficient tool for real-time HW/SW coverification. The reprogrammable hardware of the emulation tool is based on four Xilinx 4000-series devices, two Texas TMS320C50 signal processors and one Motorola MC68302 microcontroller. With current devices the BOAR hardware provides approximately 40–70 kgates of logic capacity in DSP applications. The emulation capacity can be expanded by connecting several similar boards in chain. The system has also a versatile internal reprogrammable test environment for test bench development, performance evaluations and design debugging. The logic development environment is based on the Synopsys synthesis tools and an automatic design management software, which performs resource mapping and performance-driven design partitioning between FPGAs. The emulation hardware is currently connected to logic and software development environments via an RS-232C bus. The BOAR emulation system has been found a very efficient platform for real-life prototyping of different types of DSP algorithms and systems, and validating correct functionality of a VHDL macro library.