Transverse Vibration of Axially Accelerating Moving Fabric: Experiment and Analysis

2012 ◽  
Vol 226-228 ◽  
pp. 150-153
Author(s):  
Hong Lin ◽  
Chang Li Zhou ◽  
Jun Shi ◽  
Zhi Hua Feng
Keyword(s):  
Transverse Vibration ◽  
Resonance Region ◽  
Displacement Sensor ◽  
Brushless Dc Motor ◽  
Motor Speed ◽  
Velocity Fluctuations ◽  
Brushless Dc ◽  
Photoelectric Encoder ◽  
Axially Moving ◽  
Contact Displacement

Axially moving fabric can be met in many textile devices. In most cases, the transverse vibrations of fabric can cause a series of negative influents to the product. In this paper, the transverse vibration of axially accelerating moving fabric, which is excited by velocity fluctuations, is investigated by experimental method. The harmonic varying velocity is achieved through a brushless DC motor controlled by PWM technology based on the embedded microcontroller LPC1768. An inductive non-contact displacement sensor is used to measure transversal vibration of fabric. The motor speed is measured by a photoelectric encoder. The experimental data is processed by measurement platform based on Labview and the analysis is given. Laboratory measurements demonstrate the effect of velocity fluctuations on transverse vibration of fabric, particularly near the parametric resonance region.

scholarly journals Brushless DC Motor Speed Controller for Electric Motorbike

2018 ◽  
Vol 9 (2) ◽  
pp. 859
Author(s):  
Mohd Syakir Adli ◽  
Noor Hazrin Hany Mohamad Hanif ◽  
Siti Fauziah Toha Tohara
Keyword(s):  
Pid Controller ◽  
Dc Motor ◽  
Battery Pack ◽  
Brushless Dc Motor ◽  
Bldc Motor ◽  
Motor Speed ◽  
Brushless Dc ◽  
Speed Controller ◽  
Optimum Speed ◽  
Control Scheme

<p>This paper presents a control scheme for speed control system in brushless dc (BLDC) motor to be utilized for electric motorbike. While conventional motorbikes require engine and fuel, electric motorbikes require DC motor and battery pack in order to be powered up. The limitation with battery pack is that it will need to be recharged after a certain period and distance. As the recharging process is time consuming, a PID controller is designed to maintain the speed of the motor at its optimum state, thus ensuring a longer lasting battery time (until the next charge). The controller is designed to track variations of speed references and stabilizes the output speed accordingly. The simulation results conducted in MATLAB/SIMULINK® shows that the motor, equipped with the PID controller was able to track the reference speed in 7.8x10<sup>-2</sup> milliseconds with no overshoot.  The result shows optimistic possibility that the proposed controller can be used to maintain the speed of the motor at its optimum speed.</p>

Investigation on All Digital Control System of Brushless DC Motor for Beam-Pumping Unit

2013 ◽  
Vol 336-338 ◽  
pp. 728-733
Author(s):  
Xi Zhu ◽  
Jian Guo Song ◽  
Qing Lu Zhang
Keyword(s):  
Pulse Width Modulation ◽  
Operation Mode ◽  
Good Control ◽  
Dc Motor ◽  
Brushless Dc Motor ◽  
Motor Speed ◽  
Control Effect ◽  
Brushless Dc ◽  
Speed Regulator ◽  
Pumping Unit

In order to drive beam-pumping unit with brushless DC motor (BLDCM), a kind of motor speed regulator was investigated. When pumping unit is in up stroke, BLDCM is power-driven; when in down stoke, pumping unit is braked by BLDCM. To meet the operation mode, PI double closed loops control strategy and Pulse Width Modulation (PWM) are applied. Simulation and test in field show that our design has good control effect and popularizing value.

Autonomous Underground Azimuth Measuring Drive System Based on MEMS Gyroscope

2014 ◽  
Vol 1042 ◽  
pp. 159-164
Author(s):  
Yu Liu ◽  
Xue Cheng Xu ◽  
Qiong Liu ◽  
Ting Hong Ji
Keyword(s):  
Inertial Sensors ◽  
Low Cost ◽  
Drive System ◽  
Brushless Dc Motor ◽  
Mems Gyroscope ◽  
Brushless Dc ◽  
Communication Problems ◽  
Photoelectric Encoder ◽  
Measurement Principle ◽  
Logging Tool

MEMS inertial sensors using underground azimuth measurement, with small size, high accuracy, low cost and good stability, the control and drive system is very important. This paper presents the autonomous underground azimuth measurement drive system based on MEMS gyroscope. Using MEMS gyroscope as a measuring element, driven by a brushless DC motor, using a combination of photoelectric encoder, according to the underground azimuth measurement principle, this paper proposed a autonomous measurement method, discussing the design principles of the program, the components of the system, and the communication problems between the gyroscope and other part. Overcoming the high cost of traditional logging tool and the complex control problem, experimental results verify that the system is able to achieve underground azimuth measurement purposes. Error in 1.5°or less, with outstanding engineering applications.

scholarly journals Performansi Sistem Pengendali Kecepatan Motor BLDC Menggunakan Logika Fuzzy Logic

Jurnal METTEK ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 11
Author(s):  
Wayan Widhiada ◽  
Made Widiyarta ◽  
K.P. Arya Utama
Keyword(s):  
Fuzzy Logic ◽  
Power Supply ◽  
Dc Motor ◽  
Brushless Dc Motor ◽  
Main Stream ◽  
Bldc Motor ◽  
Motor Speed ◽  
Brushless Dc ◽  
Simulation And Experiment ◽  
Dc Current

Brushless DC motor adalah salah satu jenis motor sinkron yang diberi arus DC yang bersumber dari inverter atau power supply. Motor AC menghasilkan arus AC yang dapat menggerakan motor. Pada dasarnya kecepatan motor dapat di atur menggunakan kontroler yang menghitung seberapa besar keluaran yang harus dihasilkan. Pada umumnya input dari kontroler berupa tuas (naik – turun atau putar) dan tombol untuk input awalnya. Oleh Karena itu dilakukan penelitian untuk mengganti input yang mengatur kecepatan motor BLDC. Kontrol kecepatan motor BLDC berbasis logika fuzzy adalah suatu system kontrol yang mengganti input main stream dari kontroler menjadi sensor beban, dan dimana pembacaanya akan dikontrol oleh logika fuzzy untuk mengatur control kecepatan motor BLDC. Penelitian dilakukan dengan dua cara yaitu simulasi dan eksperimen prototype dengan pemberian beban pada sensor yaitu 10 kg, 20 kg, 30 kg, 40 kg dan 50 kg sebagai inputnya. Hasil dari pengujian dan penghitungan yang didapat pada setiap pembebanan menghasilkan kecepatan yang stabil yaitu rata – rata 0.25 detik dengan kecepatan yang hamper setara dengan referensinya. Error pada kecepatan yang dihasilkan antara simulasi dan prototype sangat kecil yaitu kurang dari 1% pada masing – masing pembebanan. Brushless DC motor is one type of synchronous motor that is given a DC current from the inverter or power supply sourced. It produces an AC current that can drive the motor. Basically the motor speed can be set using a controller to compute the result of output. In general, the input from the controller is like a handle (up – down or twist) and a button for initial input. Therefore the research has changed the input that regulates the speed of the BLDC motor. BLDC motor speed is controlled based on fuzzy logic. Fuzzy logic is a control who help load sensor to replace the mainstream input like handle, and where the reader will be directed by logic to determine the speed of the BLDC motor. The research is carried out in two techniques, called simulation and experiment. The prototype is testing with the load on 10 kg, 20 kg, 30 kg, 40 kg and 50 kg as an input. The results of the tests is obtained at each loading resulted in a stable speed which is an average of 0.25 seconds with a speed that is almost the same as the reference. The error signal of the speed is produced between the simulation and prototype is very small, which is less than 1% in each load.

scholarly journals Kendali Motor DC Brushless Modifikasi Mengunakan IC Ne555 Dan CD4017

Electrician ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 20-24
Author(s):  
Wiwin A Oktaviani ◽  
Ibnu Sukri
Keyword(s):  
Load Test ◽  
Brushless Dc Motor ◽  
Maximum Speed ◽  
Test Results ◽  
Motor Speed ◽  
Brushless Dc ◽  
Speed Controller ◽  
Unloaded State ◽  
Full Speed ◽  
Excellent Tool

In general, the Brushless DC motor speed controller uses an Atmega 16 microcontroller and a MOSFET, which often increases the MOSFET's temperature, especially when the motor is loaded. This article discusses the use of the IC NE555 and CD4017 as a frequency regulator to the MOSFET gate by periodically igniting the forward voltage from the change in the potentiometer value. We carried out the test in an unloaded and unloaded state with voltage variations of 2.5 Vac, 7.5 Vac, 12.5 Vac, and 19.5 Vac. The test results show an excellent tool response where the higher the frequency value, the motor speed will increase. The maximum speed when unloaded reaches rpm at a frequency of 574.6. Whereas in the load test, the full speed reaches 20987 rpm at a frequency of 524.675 Hz. During the test, there was no temperature increase in the MOSFET.  

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