scholarly journals Analysis of Vibration in Payload Room Due to Engine Vibration on LSU-05 NG

2021 ◽  
Vol 4 (1) ◽  
pp. 21
Author(s):  
Yusuf Giri Wijaya ◽  
Nur Mufidatul Ula ◽  
M. Muksin ◽  
Mukhael Gilang Pribadi Putra Pratama
Keyword(s):  
Control Systems ◽  
Primary Source ◽  
Vibration Measurement ◽  
Frequency Data ◽  
Accelerometer Sensor ◽  
Technology Center ◽  
Engine Vibration ◽  
Ground Test ◽  
Aviation Technology ◽  
Measurement Location

LSU-05 NG is one of the unmanned air vehicles (UAV) developed by the aviation technology center LAPAN. The LAPAN aviation technology center designed the LSU-05 NG to be able to carry a larger payload and broader range than other types of LSUs. Therefore, the LSU-05 NG uses an engine that has enough power. LSU-05 NG uses a piston-type engine with a capacity of 170 CC. UAV engine is the primary source of vibration in the UAV structure. Excessive vibration can cause damage to the UAV structure and malfunction of the UAV payload, such as sensors, control systems, and cameras. In this research, vibration measurements were carried out at 2 locations. The measurement location is on the engine and where the payload is installed. The vibration measurement on the LSU-05 NG was carried out during the ground test. The accelerometer sensor is used to measure vibrations and is connected to the NI data acquisition system and displayed with LabVIEW. The data to be taken are acceleration and frequency data with variations in the RPM value on the LSU-05 NG engine. With these measurements, the vibration characteristics caused by the engine in the LSU-05 NG structure, primarily where the payload is stored, can be known.

Application of Active Mount Engine Vibration Isolation to Fuzzy Control Systems

2013 ◽  
Vol 341-342 ◽  
pp. 1023-1027
Author(s):  
Hui Guo ◽  
Guo Chun Sun ◽  
Min Fan
Keyword(s):  
Control Systems ◽  
Pid Control ◽  
Vibration Isolation ◽  
The Body ◽  
Fuzzy Pid Control ◽  
Power Train ◽  
Engine Vibration ◽  
Control Scheme ◽  
Self Tuning ◽  
Piezoelectric Stack Actuator

An automobile power-train active mount system with a piezoelectric stack actuator is introduced. The influence caused by power-train to the body of the car is analyzed by means of parameter self-tuning fuzzy PID control, on which the simulating results are based. It turns out that this control scheme can restrain the influence better caused by power-train to the body of the car.

scholarly journals A Thing Speak IoT Based Vibration Measurement and Monitoring System Using an Accelerometer sensor

2021 ◽  
Vol 9 (8) ◽  
pp. 1249-1258
Author(s):  
shubhangi Kumari
Keyword(s):  
Internet Of Things ◽  
Real Time ◽  
Monitoring System ◽  
Web Applications ◽  
Current Model ◽  
Vibration Monitoring ◽  
Vibration Measurement ◽  
Prototype System ◽  
Accelerometer Sensor ◽  
Data Collections

Abstract: This paper presents the development of a Thing Speak IoT on a Real-Time Vibration measurement System using the accelerometer Sensor. Many systems have been designed previously but some lack systems are identified where it does not provide adaptively connections and alert to web pages on logging data collections. Thus, understanding the previous system model is important to compare the importance of new build parameters in designing the new system. An evaluation of the current model, hardware, and software is important before a new architecture is developed. This research has developed a prototype system to monitor and measure the vibration of a system remotely and setting up threshold and alert accordingly. The designed system assisted with an internet as vibration monitoring system for the machines. Research methods consist of two parts involved hardware and software development. The hardware development covers the connections of the accelerometer sensor and the software involved in constructed coding using the C language program. The program then is compiled and uploaded into the Node MCU to display the acceleration of the system. An open-source Internet of Things called Thing Speak is used as a platform to retrieve and display the collected data. Real-time monitoring can be accessed through Smartphone and web applications. This study has been considered successfully implemented and it is a significant study that performs on new IoT platforms and adaptively ready to monitor a vibration remotely. Keyword: Accelerometer Sensor, Internet of Things, Thing Speak, Real-Time.

Application of the contact and non-contact measuring techniques for on-ground resonance testing of the mini-UAV

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Aleksander Olejnik ◽  
Robert Rogólski ◽  
Michał Szcześniak
Keyword(s):  
Dynamic Properties ◽  
Structural Parameters ◽  
Reference Beam ◽  
Measurement Methods ◽  
Measuring System ◽  
Vibration Measurement ◽  
Contact Method ◽  
Content Type ◽  
University Of Technology ◽  
Aviation Technology

Purpose The paper describes the application of two different vibration measurement methods for the identification of natural modes of the miniature unmanned aerial vehicle (UAV). The purpose of this study is to determine resonant frequencies and modes of mini-airplane within the specified range of frequency values. Design/methodology/approach Special measuring equipment was used including both contact and non-contact techniques. The measuring systems on equipment of the Institute of Aviation Technology in the Faculty of Mechatronics, Armament and Aerospace of Military University of Technology (Warsaw, PL) were used to conduct measurements. In traditional ground vibration testing (GVT) methods a large number of sensors should be attached to the aircraft. The weight of sensors and cables is negligible in relation to the mass of the large aircraft. However, for small and lightweight unmanned aerial vehicles, this could bring a significant mass component in relation to the total mass of the tested object. Findings The real mini-UAV construction was used to investigate its resonant modes in the range of frequencies between 0 and 50 Hz. After receiving the output values it is possible to perform some flutter calculations within the range of operational velocities. As there is no certainty that the computed modes are in accordance with those natural ones some parametric calculations are recommended. Modal frequencies depend on structural parameters which are quite difficult to identify. Adopting their values from the reasonable range it is possible to assign the range of possible frequencies. The frequencies of rudder or elevator modes are dependent on their mass moments of inertia and rigidity of controls. The critical speeds of tail flutter were calculated for various combinations of stiffness or mass values. Practical implications In this paper, some specific techniques of performing the GVT test were presented. Two different measuring methods were applied, i.e. the contact method and the non-contact method. Using the dedicated apparatus in relation to the mini-airplane, properly prepared in terms of mass distribution, rudders deflection stiffness and proper support, some resonant characteristics can be determined. The contact measuring system consists of a multi-channel analyzer, piezoelectric accelerometers, electrodynamic exciters, amplifiers, impedance heads and a computer with the Test.Lab Software. As the non-contact method, a laser scanning vibrometer was used. The principle of its operation is based on the separation of the emitted laser beam. The returning beam reflected from a vibrating object is captured by the camera and compared to the reference beam. Dedicated software analyzes collected data and on the basis of it creates animations of structural vibrational shapes and spectral plots within the investigated frequency range. Originality/value The object used for research is the mini-UAV Rybitwa – composite mini-plane with a classic aerodynamic layout manufactured in Institute of Aviation Technology Military University of Technology. In the work, both measurement methods and some sample results were presented. Results referenced to dynamic properties of the mini-UAV can be applied in the future for its finite element model tuning, what would be useful for the needs of some parametric analyzes in case of some UAV modifications because of its structural or equipment modifications.

scholarly journals Performance Enhancement of Internal Combustion Engines through Vibration Control: State of the Art and Challenges

2019 ◽  
Vol 9 (3) ◽  
pp. 406 ◽  
Author(s):  
Hojat Mahdisoozani ◽  
Mehrdad Mohsenizadeh ◽  
Mehdi Bahiraei ◽  
Alibakhsh Kasaeian ◽  
Armin Daneshvar ◽  
...  
Keyword(s):  
Internal Combustion Engines ◽  
Performance Enhancement ◽  
Mechanical Energy ◽  
Primary Source ◽  
Internal Combustion ◽  
The Body ◽  
Combustion Engines ◽  
Engine Vibration ◽  
History Of ◽  
Background History

Internal combustion engines (ICEs) are the primary source of power generation in today’s driving vehicles. They convert the chemical energy of the fuel into the mechanical energy which is used to drive the vehicle. In this process of energy conversion, several parameters cause the engine to vibrate, which significantly deteriorate the efficiency and service life of the engine. The present study aims to gather all the recent works conducted to reduce and isolate engine vibration, before transmitting to other vehicle parts such as drive shafts and chassis. For this purpose, a background history of the ICEs, as well as the parameters associated with their vibration, will be introduced. The body of the paper is divided into three main parts: First, a brief summary of the vibration theory in fault detection of ICEs is provided. Then, vibration reduction using various mechanisms and engine modifications is reviewed. Next, the effect of using different biofuels and fuel additives, such as alcohols and hydrogen, is discussed. Finally, the paper ends with a conclusion, summarizing the most recent methods and approaches that studied the vibration and noise in the ICEs.

scholarly journals Evaluation Method for Vibration Measurement on Casing in Aeroengine: Theoretical Analysis and Experimental Study

2019 ◽  
Vol 2019 ◽  
pp. 1-15
Author(s):  
Lanlan Hou ◽  
Shuqian Cao
Keyword(s):  
Vibration Analysis ◽  
Evaluation Method ◽  
Vibration Measurement ◽  
Evaluation Methodology ◽  
Location Optimization ◽  
Response Characteristics ◽  
Sensor Measurement ◽  
And Performance ◽  
Measurement Location ◽  
Theoretical Results

The vibration measurement location is the basis for effective monitoring of aeroengine vibration conditions. Measurement locations need to reflect the vibration of the rotor sufficiently, while complex structures of the aeroengine bring many excitation sources. This paper presents an evaluation methodology for vibration measurement on casing in the aeroengine. A number of indexes are defined to quantify and characterize the vibration measurement ability of main measurement locations on casing for rotor vibration. A dynamic model of a dual-rotor-casing system is established according to the support structure of a certain type of aeroengine. By means of the introduced evaluation method, the vibration relation between rotors and the main vibration measurement sections is analyzed. Response characteristics and performance orders of measurement sections are given. The rationality of theoretical results is sound verified by experiments on a designed pneumatic-driven double-rotor-casing test bench. The best measured vibration section is consistent with the actual on-board vibration section of the engine, which further demonstrates the effectiveness of the evaluation method. The research results can provide a basis for the selection and optimization of vibration measurement locations and fault diagnosis in the aeroengine. Furthermore, the application of this method is not limited to aeroengine vibration analysis and sensor measurement location optimization, but will be useful for vibration analysis of other rotating machinery.

The Analysis and Diagnosis of Vibration Fault of a Certain Type of Aero-Engine

2014 ◽  
Vol 633-634 ◽  
pp. 1256-1262
Author(s):  
Yan Fei Liu ◽  
Qi Wei Wang ◽  
Shu Yun Wang ◽  
Shuang Zhang ◽  
Jia Ming Cao ◽  
...  
Keyword(s):  
Vibration Signal ◽  
Vibration Test ◽  
Analysis Method ◽  
Work Process ◽  
Order Analysis ◽  
Actual Application ◽  
Engine Vibration ◽  
Aero Engine ◽  
Ground Test ◽  
Analysis System

The turbofan double-rotor engine with afterburner, as a certain type of aero-engine, often presents itself with vibration fault problems in the process of trialing run in the ground text and installed the work process of state, which will affect test the factory qualified rate and the flight mission seriously. In this paper, we mainly adopt the order analysis method to find out the reasons of the engine's vibration hazard from its vibration signal, and then make pertinence measures to solve vibration fault problems, which are combined with vibration test and analysis system of the ground text in the process of actual application. The results of the paper analyze the problem of engine vibration fault effectively and reduce the incidence of engine vibration fault, So as to increase the qualified rate of the engine in the ground test.

Fleet and Usage Management System (FUMSTM) Technologies for Gas Turbines

2006 ◽  
Author(s):  
Hesham Azzam ◽  
Peter Knight ◽  
Roger Ellison ◽  
Ken Bryant ◽  
Jonathan Cook ◽  
...  
Keyword(s):  
Gas Turbines ◽  
Management System ◽  
Fleet Management ◽  
Test Bed ◽  
Engine Vibration ◽  
Ground Test ◽  
Intelligent Management ◽  
Thermal Transient ◽  
The Uk ◽  
Engine Components

Working closely with the UK Ministry of Defence (MOD), Smiths has developed a Fleet and Usage Management System (FUMS™) to enable proactive fleet management and continuous diagnostic/prognostic improvements through a single fusion and decision support platform for helicopters, aeroplanes and engines. This paper gives an overview of a suite of FUMS™ algorithms that have been successfully developed for gas turbine applications and validated using a large volume of engine data. The system has been used to analyse both airborne acquired data and ground test-bed data. The system algorithms have been targeted at evaluating the following: stresses of compressor components, thermal transient stresses of turbine components, fatigue. Total Accumulated Cycles (TAC), engine vibration, neural network based performance/degradation and, Usage Indices (UIs) that summarise engine parameters and at the same time indicate the life/condition of engine components. By operating on data from the same engine on two test-beds, the system can be used to normalise the engine vibration and reconcile any differences in vibration-based acceptance/rejection criteria: these differences can result in the acceptance of an engine for on-wing operation at one site and the rejection of the engine at another site. The paper also gives an overview of the FUMS™ intelligent management software, which has allowed the MOD to plug-in 3rd party applications. In this way, MOD can evaluate, verify and procure engine technologies developed by various suppliers and build engine applications from these technologies without the need for software re-writing.

scholarly journals Wireless Vibration Measurement System Using a 3-Axial Accelerometer Sensor

2011 ◽  
Vol 20 (2) ◽  
pp. 131-136 ◽  
Author(s):  
Ju-Yeon Yoo ◽  
Geun-Chul Park ◽  
Ah-Young Jeon ◽  
Cheol-Han Kim ◽  
Yun-Jin Kim ◽  
...  
Keyword(s):  
Measurement System ◽  
Vibration Measurement ◽  
Accelerometer Sensor
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