Products

Category

Relay Control System

RCS - 10


Most physical systems are nonlinear to some extent, however, for purpose of analysis and design these are taken as nearly linear. In a few systems nonlinear elements are deliberately introduced to get some specific advantage. One such system is a relay control system, often referred to as bang- bang or ON-OFF system. The controller in such a system is replaced by a power relay resulting in a substantial cost reduction. In the present unit a simulated second order system is controlled by an electronic relay. Apart from a study of the relay characteristics the experiment introduces the concept of Describing Function. Finally the phase plane method of analysis is covered in detail where the switching trajectories can be displayed on an X-Y oscilloscope. Figures below give the block diagramof the feedback system and the characteristics of the simulated relay. The accompanying literature covers a brief treatment of the nonlinear system analysis through Describing Function and Phase Plane methods. Steps for conducting various experiments are described along with sample test results.

Experiments
  • Study of the relay characteristics and display of the same on CRO for different values of hysteresis and dead zones. Hysteresis and dead zone of the built-in 3-position electronic relay are adjustable in the range 0-600mV and 0-500mV respectively. The transfer characteristics and output of the relay under various settings provide insight into the relay performance.
  • Study of the effect of hysteresis on system stability. Sustained oscillations may occur in the system under various conditions, especially where hysteresis is present. The amplitude and frequency of such oscillations are predicted from a graphical analysis and then verified experimentally on the unit.
  • Phase plane analysis of relay control system for various values of Hysterisis and Dead Zones. The nature of the singular point in the phase plane diagram has importance in the stability studies of nonlinear systems. Here the phase trajectory is viewed on the CRO and the effect of changing hysteresis and dead zone observed.
  • Simulated electronic relay using high speed IC's.
  • Simulated 2nd order linear plant. Facility for displaying x and x signals.
  • Dead zone variable from O-6OOmV (approx.).
  • Hysteresis variable from 0-500mV (approx.).
  • Built-in signal sources -sine and square Amplitude: 0-1V (min.) Variable Frequency: 10, 20, 40, 80, 100, 200, 400, 800 and 1000Hz.
  • IC regulated internal power supplies.
  • 220V ±10%, 50 Hz mains operation.
  • Literature and patch cords included.
  • Essential accessory -a dual beam CRO.
  • System with electronic relay.
  • Adjustable hysterisis and dead zone.
  • Display phase plane diagram on CRO.
  • Stability study by describing function method.



Latest
Products

left

Zigbee/Xbee Evaluation Board

Zixbee Eval. Board

Programmer Board

PIC 16F & 12C/12E

Zeeman Effect Experiment

Zeeman Effect Experiment

Mind Pulse

Read Your Brain Activity

Voltage Stabilizer

V-Stabilizer

Parallel Port Tester

with Stepper Motor Controller

Video Transmitter

(4 Channel)

Voice Recognition Kit

Embedded Voice Recognition System

Wobbuloscope

(Sweep + Marker + XY Scope)

Multi-Axis Stepper Motor Control

using RS-232 for CNC machine

Robotic Kit

Robot Crane

Op - Amp Trainer

Op - Amp Industrial Lab

Hall Effect Experiment

Hall Effect Experiment

USB Host Shield

Embedded Android System

Digital IC Tester

Digital IC Tester

TFT - LCD Touch

TFT - LCD Touch Controller

Oscillator Trainer

Oscillator Training Kit

Embedded VGA Controller

Turn your Microcontroller board into a graphics card

Op-Amp as Active Filters

Operational Amplifier

8051 Quad Motor Driver

Design and Simulation of Shift Register driven Quad Motor Dr....

Sesmic Sensor

Earth Quake Sensor

GM Counter

For detection and measurement of all types of radiation

Optical Pyrometer Trainer

High Temperature Measurement

LCR Circuit

Using AC

Polarization By Reflection

Using Diode Laser

Fundo Inventors Kit

Make anything Into a Key and play music using it

Wobbulator

(Sweep + Marker)

X - Ray Diffraction

X - Ray Diffraction

GPS Logger

Ride for Fun

USB HID Gamepad

Play Your Game

POV Display

Persistence of Vision using AVR

Cathode Ray Tube

CRT Characteristics

Railway Announcer

Railway Announcer

8051 Eval. Kit

50 Projects on 8051

Moving Message Display

To display Text, Graphics, Animations, and Video

Industrial Timer / Clock

Write a Program to make a Multipurpose Industrial Timer

Half / Full Wave Rectifier

Filters & Voltage Multiplier

Kelvins Double Bridge

Wire Impedance Measurement

Quincks Method

Susceptibility of Solution

ESAT-ADXL335 Kit

Accelerometer

2051 I/O Board

Home Autmation

Smart Circuit Breaker

All-IN-One Circuit Breaker

Variation of Resistance

(Thermistor Bridge with Temperature)

Heat Capacity Kit

Specific Heat Capacity of Solid
right