Sökning: "track circuit"

Visar resultat 26 - 30 av 38 uppsatser innehållade orden track circuit.

  1. 26. System Design of Automated Test Equipment for Electrical Control Units in Trucks

    Master-uppsats, KTH/Mikro- och nanosystemteknik

    Författare :Anna Bladh; [2014]
    Nyckelord :test equpment control trucks;

    Sammanfattning : The high level of complexity in today’s electronic systems increases the demands on an advanced validation and verification process. Automated testing facilitates and improves regression testing (rerun of previously executed test cases to uncover and track new bugs) with increased coverage and reduced costs as a result. LÄS MER

  3. 27. Design and implementation of a servo system by Sensor Field Oriented Control of a BLDC motor

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för teknikvetenskaper

    Författare :Per Eriksson; [2014]
    Nyckelord :Field oriented control; Vector Control; BLDC; Servo system; Regulator; Synchronous motor; PWM; SVPWM;

    Sammanfattning : A servo system intended to steer antennas on board ships is designed, built and tested. It uses a Brushless Direct Current (BLDC) motor with an encoder to keep track of its position, and Field Oriented Control (FOC) implemented on Toshibas microprocessor TMPM373 in order to control the current flowing to the motor. LÄS MER

  4. 28. Home Location Register (HLR) dedicated for Short Message Service (SMS)

    Magister-uppsats, Institutionen för informationsteknologi

    Författare :Niklas Rönnblom; Johan Vikman; [2013]
    Nyckelord :;

    Sammanfattning : In telecommunication a Home Location Register (HLR) is used for keeping track of subscriber data for a multitude of services, including Circuit Switched (CS) calls, Short Message Service (SMS), and more. To support all functions, about 50 different complicated operations must be supported. LÄS MER

  5. 29. INFÄSTNING AV LED-ARMATUR

    Uppsats för yrkesexamina på grundnivå, Institutionen för teknikvetenskaper

    Författare :Sara Rapp; [2012]
    Nyckelord :LED; Belysningsarmatur; Kravspecifikation; Konstruktionslösningar;

    Sammanfattning : The thesis was performed at the lighting company Zpecta AB. Zpecta needed to develop alternative attachment of their LED-luminaire Capella. Today Capella attaches in metal ceilings with four magnets. Zpecta got indications from their customers that there was a need for other attachments. LÄS MER

  7. 30. Design and Implementation of a high-efficiency low-power analog-to-digital converter for high-speed transceivers

    Master-uppsats, Elektroniksystem; Tekniska högskolan

    Författare :Choudhry Jabbar Younis; [2012]
    Nyckelord :Analog front end; data rates; Analog to digital converter; track and hold; bootstrap; averaging; interpolation;

    Sammanfattning : Modern communication systems require higher data rates which have increased thedemand for high speed transceivers. For a system to work efficiently, all blocks ofthat system should be fast. It can be seen that analog interfaces are the main bottleneckin whole system in terms of speed and power. LÄS MER