Sökning: "Back EMF."

Visar resultat 6 - 10 av 11 uppsatser innehållade orden Back EMF..

  1. 6. Dynamics and electronics of a manually chargeable quadcopter for steady-state flight

    M1-uppsats, Mälardalens högskola/Akademin för innovation, design och teknik

    Författare :Ioannis Kantsaporidis; Sadeq Al-Attar; [2017]
    Nyckelord :Rechargeable quadcopter; back emf; momentum theory; sustainability; battery performance; thrust; power;

    Sammanfattning : The objective of this thesis is to investigate how the onboard battery of a quadcopter can be charged through manual rotation of its motors, while understanding the resulting aerodynamical forces acting on the rotors during hover, as well as considering the changes in thrust capabilities when the electronic and structural design are altered. A theoretical approach using the momentum theory will present a general understanding of rotor performance whilst describing the correlation between rotor parameters, thrust and mechanical power. LÄS MER

  3. 7. DC Motor driver for low RPM

    Kandidat-uppsats, Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Författare :Stefan Ketelaars; [2016]
    Nyckelord :DC motor driver; DCDC converter; Pulse generator; H-Bridge; Back EMF.;

    Sammanfattning : For this project the main goal was to design, simulate, build and test a DC motor driver. To accomplish this four specific parts had to be design. First a DCDC converter that converts the input signal from an external power supply in a controllable DC output. LÄS MER

  4. 8. Estimation and Compensation of Load-Dependent Position Error in a Hybrid Stepper Motor

    Master-uppsats, Linköpings universitet/Reglerteknik

    Författare :Anton Ronquist; Birger Winroth; [2016]
    Nyckelord :Adaptive Notch Filter; Back-EMF; Electric Motor Position Control; Error Modelling; Field-Oriented Control; Hybrid Stepper Motor; Kalman Filter; Load Angle; Magnetic Rotary Position Sensor; Sensorless Control; Sliding Window Discrete Fourier Transform; Stall Detection and Prediction.;

    Sammanfattning : Hybrid stepper motors are a common type of electric motor used throughout industry thanks to its low-cost, high torque at low speed and open loop positioning capabilities. However, a closed loop control is often required for industrial applications with high precision requirements. LÄS MER

  5. 9. Sensorless Control of Brushless DC Motor in Hydraulic Application

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

    Författare :Martin Djup; Elias Allar; [2015]
    Nyckelord :Technology and Engineering;

    Sammanfattning : In this master thesis we have studied the possibilities of implementing and controlling the speed of a brushless DC motor in an hydraulic application developed by BorgWarner TorqTransfer Systems AB. The hydraulic application is a coupling that give vehicles intelligent all-wheel drive. LÄS MER

  7. 10. Analysis, design and control aspects of linear machines using co-simulation

    Master-uppsats, KTH/Elektrisk energiomvandling

    Författare :Muhammad Salman; [2012]
    Nyckelord :;

    Sammanfattning : This research work describes the permanent magnet linear machines, their characteristics, control and applications. It aims to develop a linear machine model in finite element based software, Flux2D. The Finte Element Method (FEM) model consists of 8 poles and 9 slots where periodicity of poles is used to simulate inifinite travel length. LÄS MER