Sökning: "pulse position modulation"
Visar resultat 1 - 5 av 10 uppsatser innehållade orden pulse position modulation.
1. FPGA Based Control of Multiple Electric Machines for Marine Propulsion Systems
Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)Sammanfattning : This master thesis addresses the control of electric propulsion motors in a marine context. The focus lies mainly on the implementation of field oriented control (FOC) in a field programmable gate array (FPGA). The hypothesis is that FPGAs provide performance advantages over microcontroller-based control solutions by enabling parallel processing. LÄS MER
2. Beyond Pulse Position Modulation : a Feasibility Study
Master-uppsats, Linköpings universitet/Institutionen för systemteknikSammanfattning : During the thesis work, a feasibility study of the BPPM error-correction protocol is performed. The beyond pulse position modulation (BPPM) protocol was invented at Ericsson AB and describes a modulation encoding using vertically and horizontally polarized single photons for optical transmission and error-correction. LÄS MER
3. Spectral broadening of 4 mJ femtosecond pulses using a bulk multi-pass cell
Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionenSammanfattning : Nonlinear optical effects can be used for spectral broadening, which the basis of the field of post-compression of laser pulses. When the intensity of light becomes high enough the refractive index becomes intensity dependent, and as the intensity often varies both with position and time so does the refractive index. LÄS MER
4. Communication and Error Correction via Polarisation of Single Photons and Time Ordering
Master-uppsats, KTH/Tillämpad fysikSammanfattning : This research study aims to investigate the capacity of single photons to carry information through polarization and time ordering and proposes a protocol called Beyond Pulse Position Modulation (BPPM) to improve photon-based communication reliability over longer distances with limited power. Such a protocol may be used in any communication scenario where energy efficiency is important, e. LÄS MER
5. Modelling and design of PMSM position drivesusing model following control
Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)Sammanfattning : Teenage Engineering is a Swedish electronics company that want to automate their quality control process. For this purpose, they want to develop a test jig that can perform tactile testing of their products. The test jig will utilize PMSM motors for position control of the end-effector. LÄS MER