Essays about: "feedback circuits"

Showing result 1 - 5 of 14 essays containing the words feedback circuits.

  1. 1. Feedback Control in Silicon Photonic MEMS

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Andrea Cataldo; Björn Åkermark; [2023]
    Keywords : ;

    Abstract : In this report, we study the implementation of a feedback control system to stabilizea MEMS device for applications in programmable photonic circuits. Specifically, the controller wasimplemented on an all-pass ring resonator, as it was the most suitable MEMS device to implementthe control system on. READ MORE

  3. 2. Analysis of high-voltage low-current DC/DC converters for electrohydrodynamic pumps

    University essay from Uppsala universitet/Institutionen för elektroteknik

    Author : Sigge Axelsson; Jonas Gartner; Axel Stafström; [2023]
    Keywords : high-voltage; low-current; low-power; DC DC; DC-DC; high-gain; converter; electrohydrodynamic pump; EHD; transformerless converter; Royer-based converter; resonant Royer oscillator; Cockroft-Walton voltage multiplier; CWVM; voltage multiplier; series-connected positive-negative voltage multiplier; SPNVM; planar air-core transformer; planar transformer; high-freqency Royer-based converter; overcurrent protection; LT8331; gallium nitride; GaN; planar PCB-integrated transformers;

    Abstract : Moving parts cause vibrations and tend to wear out. In applications where maintenance is complicated, solutions without moving parts are therefore advantageous. Electrohydrodynamic pumps are such a solution. Instead of mechanical propulsion, they use strong electric fields to induce movement in a dielectric cooling liquid. READ MORE

  4. 3. PCBA verification and fault detection using a low-frequency GMR-based near-field probe with magnetic closed-loop feedback compensation : A non-contact alternative to physical probing

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Joacim Sundh; [2022]
    Keywords : GMR; sensor; magnetic field; near-field; probe; linearity; PCB; coil; PCBA; analogue integrated circuits; analog; operational amplifiers; electrical fault detection; feedback circuits; in-circuit tests; GMR; sensor; magnetfält; närfält; sond; linjäritet; mönsterkort; spole; kretskort; analoga integrerade kretsar; operationsförstärkare; elektrisk feldetektering; återkopplingskretsar; kretskortstest;

    Abstract : As electronics are getting both smaller and more advanced, the need to verify and validate remains and the means are getting more complex the more functions and components are added. Traditionally, in-circuit tests (ICTs) are performed by probing dedicated test points on the Printed Circuit Board Assembly (PCBA) in a test sequence that is unique to each product. READ MORE

  5. 4. Current sensing in software for electronic fuse applications : Analysis of two different current measurement implementations

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Elias Johansson; [2021]
    Keywords : Electronic fuse; Current sensing; Sensors; Microcontroller; Shunt resistor; Elektronisk säkring; Strömmätning; Sensorer; Mikrokontroller; Strömavkänningsmotstånd;

    Abstract : Relays and fuses are used in a multitude of applications to deliver and control current to its consumers. To improve the controllability of both the fuse and relay function, they can be moved to software. This will not only increase the number of available features but can also give live feedback of the systems current state. READ MORE

  6. 5. Development of a sensory feedback system in hand prostheses.

    University essay from Lunds universitet/Avdelningen för Biomedicinsk teknik

    Author : Alexander Jordansson; Nima Haji Sheykhi; [2017]
    Keywords : Prosthetic hands; sensory feedback; Myoelectric control; Arduino; Ottobock; limb prostheses; Robots; PWM; Data transfer; Build circuit; RTC; Data logger; EMG; Bluetooth; I2C; FSR; Sleep mode; Interrupt; Baud rate; serial monitor; Serial interface; memory; EAGLE; LabVIEW; Master; Slave; Low pass filter; Power consumption; Transfer time; Calibration; Technology and Engineering;

    Abstract : This master thesis is about improvement, optimization and further development of the sensory feedback in a prosthetic hand previously investigated at the department of Biomedical Engineering in Lund. The first approach will be to investigate and further see into the need of a sensory feedback in hand prostheses. READ MORE