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  • Stepper Motor Control Using the PIC16F684
    AN906 Stepper Motor Control Using the PIC16F684 MICROSTEPPING Author: Reston Condit Microchip Technology Inc. Single stepping, or turning a stepping motor at its rated step size, results in less than smooth movement. Microstepping is a technique used to smooth the INTRODUCTION motor's movement
  • Using AC PWM Drives on Non-Standard Voltages and Frequencies
    Often, there may arise the need to apply an AC PWM drive1 to input voltages such as 200, 208, 380, 415 and possibly other levels, as well as input frequencies such as 50 Hz. The AC PWM regulator utilizes a switching power supply for control power that is sourced from a DC bus. This gives the unit
  • Stepper Motor Control with dsPIC (R) DSCs
    This application note describes how to drive a stepper. motor with a dsPIC33F motor control family DSC. The eight PWM channels (six pins from the PWM1. module and two pins from the PWM2 module) are used. to control a stepper motor in all possible ways, whether. it is bipolar or unipolar, using full
  • Digital Current Loops and Direct PWM Control
    Until recently, digital control of a motor's current loop was not feasible - the required bandwidth of the current loop was too high for a cost-effective digital solution. However, with the advent of DSP technology, this has changed. Delta Tau has taken advantage of cutting-edge DSP technology
  • D/A Conversion Using PWM and R-2R Ladders to Generate Sine and DTMF Waveforms
    ) for telephone dialing, controlling the speed of a motor, generating sound and complex waveforms, and generating variable voltages in a power supply.
  • Motor Control in Home Appliances
    The home appliance market uses three-phase, pulse-width-modulated (PWM) motors in a number of end applications including air conditioners, washers, dryers and garage door openers. Many of these applications require variable speed and/or torque, and the controllers that provide this capability must
  • Understanding Electronic Motor Drives
    magnitude voltage pulses. All PWM drives contain an input converter, dc bus, and output inverter. For simplicity, only one phase of input and output are shown for a 3-phase drive. Selecting the right drive is essential to getting the best performance and efficiency from an electric motor. A motor
  • VF Control of 3-Phase Induction Motor Using Space Vector Modulation
    VF control using the Sine PWM algorithm is a popular algorithm for AC induction motor control; however, this algorithm has certain drawbacks which affect the overall system efficiency. A more advanced switching algorithm, like Space Vector Modulation (SVM), overcomes the drawbacks of the Sine PWM

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