Papers by Keyword: Test Platform

Abstract: To implement the multi-directional test of WAMS application system, and to satisfy the requirement for the flexibility and reusability of WAMS application system, the test platform of WAMS application system is designed and built. Firstly, the basic functions, the platform components and software structure of the test platform of WAMS application system are described. Then, the realization of data model and multi-source data interface and other aspects are expounded in detail. Finally, by using the test platform developed completely, the test case aiming at the disturbance source location system based on the WAMS data is produced, and test work of the disturbance source location system based on WAMS data is finished. The test results verify the accuracy and practicability of WAMS application system. Moreover, it proves the use value of the test platform; the test platform of WAMS application system can not only reduce workload of the test work remarkably, but also enhance the standardization degree of the test program and the reusability of the test case, which plays an important role in reducing the research cost of the WAMS application system and speeding up the progress of the research.

Abstract: In this paper, through analyzing the generating mechanism of automobile steering resisting torque, we build MATLAB/SIMULINK torque simulation model and get the steering resisting torque under different working conditions. And the results show that the model has a higher accuracy through comparing it with actual measured steering resisting torque. Design and set up the experiment platform composed of three parts including steering system, control system and torque loading device. Based on the data of steering resisting torque obtained from the model simulation, we manipulate torque loading device to input a certain of resistance for steering system ,thus to realize accurate simulation of various steering condition on test platform ,which has paved the way for the development and debugging of EPS controller.

Abstract: Automotive steer-by-wire system uses electronic signaling to transfer the command and causes the motor-driven steering. It can improve the maneuverability and stability of the driver steering. This article first discussed the car-by-wire steering system structure and working principle. Then, it builds the in-the-loop simulation based on the test bed of automotive steer-by-wire system. Moreover, this paper researches the test bad design of the automotive steer-by-wire system. The operation module controller is designed based on the of the automotive steer-by-wire system. At last, we can find out the qualitative simulation results.

Abstract: For software function verification and performance testing, a test platform was built during the development of large-capacity EPON OLT equipment. The platform was based on distributed system,which using modified TCP/UDP to establish RPC data exchange path between nodes. With Linux as unified operating system, software work in both embedded PowerPC and x86-based PC virtual machines without modification. At last, a group of stress test was executed on the platform and the result was discussed.

Abstract: This paper analyzes the electric inertia simulation method deeply. By analyzing the brake torgue in the braking process, this paper makes a conclusion about the relationship between the moter’s torgue in the braking process and the simulation of inertia. The test uses the method of combining the mechanical simulation and electrical simulation. In this method, it invites the test platform of electric bicycle brake force, and realizes the inertia simulation. On the test platform, the results showed: by using the electric inertia simulation, the performance of the system is obviously better than the one on the test platform which using flywheel groups. This method improves the degree of automation on the test platform.

Abstract: The rail fastener assemblies under alternating load for a long time , in addition to the vibration and strength,fatigue also is the main reason for damage .So effective fatigue test and life assessment is one of the important means to ensure the safety of railway operation .This paper introduces the routine fatigue test method of railway track fastener assembly which adopts the European Railway Standard EN13146-4,by using 33° test platform which conform to the actual operation stress conditions of the railway track can more effective test the rail fastening assembly.

Abstract: This paper introduces the electrical principle and structure of auxiliary electrical system of HXD2 electric locomotive. It presents the main design ideas of the power module test platform and focuses on the design of the power cabinet and the control cabinet of the power module test platform. The core design of the control cabinet is the peripheral circuit and hardware design which is based on DSP. The high power experiments prove the reliability of design.

Abstract: Due to the features of complicated test environment, variable parameters, and limited conditions in real car experiment, it has proposed a Hardware-in-Loop test platform for Fuel Cell System (Short for FCS) based on hardware of NI PXI and software of NI Labview to fuel cell vehicle. According to FCS’s control strategy, I/O signal map, CAN communication and sensor characteristics, it has designed the hardware configuration, software program, test interface, and rapidly made validation to control logic and fault diagnosis of Fuel Cell System’s Electronic Control Unit (Short for FCU). The experiment result shows that this test platform is effective for FCU control logic validation, system status monitor, fault injection, fault tracing, and it can shorten the vehicle research and development cycle, reduce the development cost, optimize test environment and promise safety for test engineer. This test platform will make good effect to vehicle electrical system development and supply reference for vehicle test.

Abstract: Based on the structure analysis of a hybrid truck, design a single-axle parallel hybrid powertrain test platform. Modular design method is used to realize this platform and this platform is divided into four modules. Function design, software design and realization of the four modules are respectively discussed. Finally, a cycle run test was taken and the test result indicates that effectiveness and accurateness of the test platform are realized well.

Abstract: In order to testing the parameters changing of electromotor during the lifecycle, the test platform is designed. For different equipment, the controller of the test platform can simulate different real load of electromotor. During test, the controller can not only acquisition some basic parameters of the electromotor, such as voltage, current, temperature, rotate speed, but also protect the test platform when one parameter exceed setting value. The test platform test a electromotor. The result show that the test platform can simulate real load of the electromotor, can display and store all parameters of electromotor, can find the weak point during the whole lifecycle.