Essays about: "zero-crossing"

Showing result 11 - 15 of 20 essays containing the word zero-crossing.

1. 11. Resistance spot welding equipment controller - Beijer iX T7B Softmotion based weld equipment controller

   University essay from Mittuniversitetet/Avdelningen för elektronikkonstruktion

   Author : Olaf Hermansson; [2016]
   Keywords : SCR; PLC; HMI; Resistance welding;

   Abstract : The goal of the project is to evaluate a new setup for the company Iberobot Svenska AB, using HMI and PLC, for resistance spot welding equipment controller. The purpose of the controller is to control the weld process; weld power and time. READ MORE

3. 12. Drone Detection using Audio Analysis

   University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

   Author : Louise Hauzenberger; Emma Holmberg Ohlsson; [2015]
   Keywords : Audio analysis; drones; detection; Technology and Engineering;

   Abstract : Drones used for illegal purposes is a growing problem and a way to detect these is needed. This thesis has evaluated the possibility of using sound analysis as the detection mechanism. A solution using linear predictive coding, the slope of the frequency spectrum and the zero crossing rate was evaluated. READ MORE

4. 13. Characterisation of a New Type of Solid Organic Scintillator for neutron-gamma Discrimination using Pulse-Shape DiscriminationTechniques

   University essay from Uppsala universitet/Kärnfysik

   Author : Qadir Nishada; [2014]
   Keywords : EJ-299-33; PSD; Pulse-shape discrimination; plastic scintillator; neutron-gamma discrimination; scintillator decay times;

   Abstract : In this report the neutron-gamma discrimination capabilities of the new type of solid organic scintillator, EJ-299-33, was investigated using several pulse-shape discrimination (PSD) techniques. Among others, the analog zero-crossing method andthe digital charge-comparison and integrated-rise-time method were tested. READ MORE

5. 14. Analogue versus digital solution for motor control

   University essay from JTH, Data- och elektroteknik

   Author : Andreas Johansson; Max Stigborg; [2013]
   Keywords : Sensorless motor control; BLDC motor; BEMF; Zero-crossing; InstaSPIN;

   Abstract : Saab has an analogue solution which is used to drive small motors in aircrafts. The motor is a brushless DC-motor and uses a resolver and hall sensors to control it. READ MORE

6. 15. Design, Implementation and Comparison of Demodulation Methods in AM and FM

   University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Author : Gaojun Chen; Sen Lin; [2012]
   Keywords : Demodulation; Envelope; Coherent; Square-law; FM to AM; Zero-crossing; Quadrature.;

   Abstract : Modulation and demodulation hold dominant positions in communication. Communication quality heavily relies on the performance of the detector. A simple and efficient detector can improve the communication quality and reduce the cost. READ MORE