Design Of Test Platform Research Articles

Innovative lightweight flexibility test platform for RV reducer with topology optimization and 3-D printing

Abstract The majority of existing mechanical devices are only capable of measuring a single parameter. They are constructed primarily from metal processing, resulting in a substantial weight, elevated manufacturing costs, and a fixed and inflexible accuracy and assembly methodology. Accordingly, this paper presents the design of a lightweight RV reducer test platform, which enhances the flexibility of high-precision measurement. The test platform employs topology optimization lightweight structure design and 3D printing technology. Static simulation is used to lightweight the structure and add an adjustable structure. It significantly reduces cost and weight while having an adjustable self-connection structure and a wide range of application scenarios. It improves the flexibility of high-precision measurement while ensuring sufficient strength. In order to verify the measurement performance of the platform, the wavelet threshold method with excellent denoising effect was used to analyze the acceleration power spectral density of each part of the test platform at different rotation speeds. The results show that the wavelet threshold method could effectively filter noise and extract key experimental data. The accelerometer results show that the test bench has superior stability at both 0.5 r min−1 and 120 r min−1 speeds, and has practical application value. The simulation also verifies that the test platform has sufficient rigidity to meet the working conditions.

Design and validation of experimental test platform for field-circuit coupling wide-frequency characteristics model of power transformer

Design and validation of experimental test platform for field-circuit coupling wide-frequency characteristics model of power transformer

Research and design of digital servo system assembly test platform

Research and design of digital servo system assembly test platform

Research and design of transient test platform for DC current transformer

This article studies the design and simulation of a transient test platform for DC current transformers to verify the effectiveness of the design scheme. DC current transformers convert large currents on the primary side into small currents on the secondary side through electromagnetic induction principles and are widely used in power systems. In order to verify the feasibility of the design scheme, simulation research was adopted, and the simulation parameters were the same as the actual scheme, including controllable current source parameters, cable parameters, and MOS switch branches. The simulation results show that the designed DC transient square wave current source can effectively compensate for the impulse current, and the output current waveform is stable, meeting the design requirements.

Design and Application of Driving Resistance Test Device for Aircraft Tire and Soil Pavement

In view of the lack of soil bins for studying the surface interaction between aircraft wheels and soil, this study designed an indoor test bench for aircraft wheels and soil, including a soil container, loading vehicle, and intelligent measurement and control system, to test key parameters such as tire speed and wheel frictional resistance. The test system is capable of achieving speed regulation ranging from 0 to 30 km/h. The vertical load adjustment range with an adjustment interval of 10 kg spans from 90 to 140 kg. The soil type, compaction degree, and other conditions can be modified as per requirements to vary multiple test conditions, thereby enabling us to explore their influence on the driving resistance of the wheels. Moreover, the test data can be collected and processed in real time. A performance test of a wheel–soil table was carried out. The results show that the wheel–soil table test system is stable and reliable and can determine the relationship between the tire and soil, and the structural design of the test system meets the use requirements. In addition, it achieves the target test speed, data acquisition frequency, and stability. In terms of functionality and operational difficulty, the data acquisition of the entire test process is automated, and the test system achieves better informationization than previous methods. The overall operation of the wheel–soil platform is stable and powerful; thus, the model test platform design goal is achieved, and the testing requirements are met.

Design and research of fuzzy PID-based liquid pump performance testing platform

Abstract The pump is a crucial component of agricultural sprayer machinery, directly impacting its operational quality. This paper designs a performance testing platform for pumps. Utilizing a brushless DC motor as the power source for the pump, a closed-loop mathematical model for the brushless DC motor is established. Simulation experiments and indoor experimental tests are conducted. Simulation results indicate that the motor control system exhibits fast response, no overshooting, and excellent dynamic and static performance. Experimental tests on the platform show that the error range of motor speed is less than 0.3%, achieving excellent control performance. The constructed pump performance testing system achieves precise measurement of pump flow rates at different speeds, demonstrating outstanding performance.

Design and Application of Micro-vibration Test Platform for Control Moment Gyroscope of Space Station

Design and Application of Micro-vibration Test Platform for Control Moment Gyroscope of Space Station

Vehicle vibration test platform structure design and control strategy optimization

AbstractFor the needs of vehicle vibration test platform with high precision, large load capacity and fast response, the three‐dimensional model design and analysis of vehicle vibration test platform are carried out; in order to improve the motion performance of the platform, a vibration test plat‐form control strategy combining hybrid heuristic algorithm and PID control is proposed. Based on the designed 3D model parameters, the single‐channel mathematical model of the servo‐electric cylinder is derived and a hybrid heuristic algorithm PID optimization model is established to compare and analyze the control performance of the platform with the Ziegler‐Nichols method PID. The results show that the step system overshoot is 3.80% and the dynamic performance of the system is significantly improved when the hybrid heuristic algorithm PID control is used. The simulation system model of vehicle vibration test platform control is established, and the operation results show that the platform is closer to the input signal in the spatial position change curve when the hybrid heuristic algorithm PID control is used. Its maximum displacement error is 0.09 mm, and the motion accuracy of the system is improved by 61% compared with the Ziegler‐Nichols method PID control.

Apple mechanical damage mechanism and harvesting test platform design

Abstract Apple is easily damaged in the process of the mechanical harvesting, which reduces the fruit’s quality. It is of great significance to study the damage principle of apple in the transport process of picking platform. In this study, the apple compression test was carried out. The compression and drop process of the fruit was analyzed by the finite element analysis (FEA). The experimental platform of apple harvesting was designed, the conveying process of apple was analyzed. The results of compression finite element analysis showed that when the compression force is greater than 15.0 N, both radial compression and axial compression will be damaged. The results of drop finite element analysis showed that when the drop direction is axial, the maximum contact stress of the peel and kernel decreases with the increase of drop angle, the maximum contact stress of the pulp increases first and then decreases. When the drop direction is radial, the maximum contact stress between pulp and kernel decreases with the increase of drop angle, the maximum contact stress of the peel first decreases and then increases. The simulation results of the harvesting platform transportation showed that the damage rate of apples is less than 10 % when the sub-conveyor belt speed is 0.02 m–0.04 m/s. This study can provide theoretical guidance for the design of the harvesting test platform and the reduction of the damage of apples during transportation.

Design of seismic test platform for electrical equipment with large-scale renewable energy generation

Design of seismic test platform for electrical equipment with large-scale renewable energy generation

Design and Experiment of a Low-Loss Harvesting Test Platform for Cabbage

In order to explore the mechanism and influence mechanism of cabbage harvest damage, a low-loss cabbage harvest test platform was designed on the basis of combining the physical characteristics of cabbage with the mechanical characteristics of mechanical harvest and the cabbage harvest operation process. Through the design of key components of the test platform harvesting, the key parameters of the pulling-out device, the reel device, the flexible clamping and conveying device, and the double-disc cutting device were determined. The movement changes of cabbage during pulling out, conveying, and cutting were analyzed to clarify the process of damage generation and critical conditions of damage in cabbage harvesting operations. The test results showed that when the speed of the pulling out device was controlled at 80–120 r/min, the speed of the clamping and conveying device was controlled at 120–240 r/min, and the speed of the double disc cutter was controlled at 140–180 r/min, the average success rate of pulling on the low-loss harvesting test platform was 92.7%; the average damage rate of the pulling process was 7.32%; the average success rate of clamping and conveying was 88.6%; the average damage rate of the clamping and conveying link was 12%; the average success rate of root cutting was 89.3%; and the average damage rate of the cutting link was 11.34%. The average qualified rate of harvesting in the pulling link was 86.7%, the average qualified rate of harvesting in the clamping and conveying link was 75.3%, and the average qualified rate of harvesting in the cutting link was 77.3%. All the performance indicators meet the design requirements and relevant standards, and the research results can provide a reference for the development and structural improvement of low-loss harvesting equipment for cabbage.

Optimization design of short-circuit test platform for the distribution network of integrated power system based on improved K-means clustering

Short-circuit test platform can verify the correctness of the distribution network simulation model and the effectiveness of short-circuits protection. It is necessary to simplify the structure of the distribution network into a typical branch and build an equivalent test platform due to the system’s complexity. The equivalent system based on empirical classification has particular subjectivity and randomness, which will reduce the representativeness of the short-circuit test platform. Therefore, this paper adopts the improved K-means clustering algorithm to cluster the short-circuit impedance parameters from the typical short-circuit point of the distribution network to the power supply into different clusters. Each cluster center is used as the equivalent system’s characteristic impedance to realize the complex system’s simplification. The feasibility of the improved K-means clustering algorithm is verified by comparing the short-circuit simulation results with the original and the empirical classification equivalent system.

Research on dynamic characteristics of marine engine transmission system

As the main component of marine engine, the transmission system often produces serious vibration and noise, which will significantly affect the performance and service life of the driving mechanism. In order to provide reasonable structural design basis for marine engine transmission system, the dynamic characteristics under different working conditions were studied in this paper. A simplified rectangular structure was applied to express the instantaneous motion state model of the chain link, and the equation was expressed according to Euler kinematics theory. The MNF (modal neutral file) model was derived by making the links and pins flexible parts, and the rigid flexible coupling model of the transmission system was established based on ADAMS. Since invalid constraints were adjusted and replaced, the transmission system model could be simulated and calculated precisely under the conditions of different tension, spindle rotation speed and driving sprocket teeth number. By changing the model parameters through the single variable method, the variation rules of transmission ratio, spindle radial force, transmission ratio deviation and maximum transient stress of chain link were obtained respectively. According to the design and construction of vibration test platform, the simulation result was verified, and the spectrum response results of the chain drive system were obtained. The results show that the rigid flexible coupling model can achieve high simulation accuracy in the chain drive system. Reasonable tension and sprocket teeth number can not only reduce the amplitude, but also reduce the fluctuation of output torque and transmission ratio.

Design and Suitability Analysis of FPGA-Based TCP/IP Offload Module for Control Systems of FBRs

Transmission Control Protocol/Internet Protocol (TCP/IP) offload modules play a crucial role in India’s first commercial fast breeder reactor (PFBR) distributed digital control system architecture by providing networking capabilities to the real-time control systems used in safety-critical and safety-related applications of the PFBR. These modules enable operators to remotely control various mechanisms, facilities, and process loops via real-time control systems from the main control room display stations. The malfunctioning of these modules may hamper the overall plant’s availability; hence to improve further upon safety, security, reliability, and performance, these modules have been indigenously developed for upcoming fast breeder reactors in India. This paper proposes methods to justify the suitability of these communication modules as per the D-25 design guidelines issued by the Atomic Energy Regulatory Board of India. The design and testing aspects are covered, including an approach toward hardware descriptive language-based design and testing with respect to the IEEE standard and the TCP/IP protocol specifications. Module design validation based on ethernet frame transactions is detailed in this paper. The test platform design, which includes the diagnostics software design for CPUs designed with these TCP offload modules, and the design of a graphical user interface to detect and record TCP connection anomalies are detailed. The network interface response to postulated events of TCP packet corruption, packet drop, packet delay, out-of-order packets, duplicate packets, and heavy traffic is characterized.

Unmanned aerial vehicle power system performance test platform design

To achieve high-frequency and high-precision measurement of the performance of the UAV power system, a set of devices that can realize tensile and torque decoupling tests were designed and built, and a design scheme for the UAV power test was given. On this basis, the design of the data acquisition system and signal conditioning system with the data acquisition board as the core and the development of LabVIEW test software were completed. Finally, the debugging test of each system verified the functions of tensile force, torque separation measurement, data acquisition, host computer display, preservation, etc. It realized the high-frequency and high-precision measurement of the performance of the UAV power system. . The test results showed that the output signal of the test bench was highly linear, and the repeatability was good.

Design of Real Network Hardware In-Loop Simulation Test Platform for Internet of Vehicles Testing

Based on the function and performance testing requirements of Internet of Vehicles, a design scheme for automatic simulation test and verification platform for the Internet of Vehicles based on cellular networks and real network in-loop is proposed. First, the overall structure of the simulation test platform and the specific function of each component are presented. The main and functional components of the real cellular network simulation subsystem are then discussed. Finally, two typical application test scenarios are designed and presented; namely, vehicle remote-startup delay test based on a cloud platform and Internet of Vehicles local performance test of different frequency cell switching in a dynamic scenario. Experimental results verify that the simulation test platform can meet the test verification, performance evaluation, and troubleshooting requirements of the Internet of Vehicles function. It is important to improve the application experience of intelligent connected vehicles and the Internet of Vehicles.

Calculation of transient long pulse maximum current for CRAFT multi-parallel thyristor converters

To improve the efficiency of the fusion converters and meet the impact test conditions of some high-power electrical equipment, a equivalent impedance model is established to derives the maximum pulse current for multi parallel thyristor converters. The comparison between simulation and experiment results based on the parameters of DC test platform in ASIPP shows a great consistency. Then, the relationship between maximum pulse current, time length and triggering angle of the Comprehensive Research Facility for Fusion Technology (CRAFT) multi parallel converters are studied. This method can be used to greatly reduce the computation and cycle of engineering design in the similar test platform design.

Retracted: Design and Implementation of Online Intelligent Mental Health Testing Platform.

[This retracts the article DOI: 10.1155/2022/9270502.].

Design and Analysis of a Space Dynamic Test Platform

This paper describes a kind of laboratory simulation test platform. The dynamic coupling model of the simulation test platform has been obtained by using the Newton-Euler equation. According to the inverse-system, the equation can be decoupled, and the decoupling analysis and calculation of the system are performed through the decoupling theorem. As a result, the coupled nonlinear Multiple-Input Multiple-Output system is converted to two linear decoupled Single-Input Single-Output subsystems. The establishment of the mathematical model can provide reference for the design of the controller in the simulation test platform. In order to verify the error of the rotation accuracy of the simulated test platform developed, a reasonable experimental scheme was developed for testing.

Design and Implementation of a Regenerative Mode Electric Vehicle Test Platform for Engineering Education

In engineering education, traditional teaching approaches cannot sufficiently help students to learn electric vehicle (EV) concepts. In this study, the design of an educational test setup including all the components and all dynamics of EVs is implemented, and case studies for engineering education with practical applications are discussed. The proposed test and training platform not only provides hands-on experience for engineering students, but also the opportunity for expert users to test their own designed algorithms on the test setup through a computer and human–machine interface device. The aim of the study is to show students the effects of road slope, vehicle weight and energy recovery parameters on a light EV. In this context, five case studies have been carried out by the students, and a survey was conducted with them. The survey results show that the test setup can help them better comprehend any EV system and develop their professional knowledge and skills.