SCOPE OF LEARNING:
• Speed Vs Voltage Characteristics
• Speed Vs Torque Characteristics
• To determine the motor gain constant Km and Torque Constant Kit.
• Study of frequency response using step input
• Study of frequency response using sinusoidal input
• Study of frequency response using Ramp input
• Study of Closed loop second order response of the system using PID controller
• Study of control system components
• Study of Power Amplifier - determination
• Study of Error Amplifier
• Study of controller to measure its gain
• Closed loop performance of the system with P controller
• Effect of disturbance input on open loop and closed loop system with p-controller.
• Study of Closed Loop System with PI-Controller.
• Study of closed loop system with PID Controllers
• Study of disturbance rejection with P and PID controller for various value of gains.
FEATURES:
? One F/V converter provided to convert the pulses to voltage output,
? Speed controller provided to select
# Proportional circuit
# Proportional plus integral circuit
# Proportional + Integral + Derivative circuit
? One 31?2 digit display to display the speed of the DC Servo motor / set value
? A Switch provided to select the reference or the actual Speed.
? One 31?2 digit display to display the Armature Voltage or Armature Current, selectable by a Toggle Switch.
? A Separate panel for function generator to produce step, sinusoidal and Ramp waveforms with options for varying frequency, amplitude, offset and Range.
? All Important signals are terminated at sockets so that the student can monitor /
measure the signals using CRO, DVM, Frequency counter etc.
POWER AMPLIFIER:
? PWM based MOSFET Power Amplifier
? One MOSFET as power device
? Rating: 500V @ 8 Amps
? Control circuitry with opto-coupler Isolation.
? One potentiometer provided to control the duty cycle of the chopper
? Provision to feed the control voltage to vary the duty cycle from the Personal computer / Microprocessor / Microcontrollers.
TEST SIGNAL FOR PID PERFORMANCE STUDY
? Provision to feed the control voltage, as External voltage from the personal computer/
? Microprocessor / Microcontrollers.
? XR2206 for producing different waveforms
? One Range selection switch to select from 0.02 Hz to 2 KHz
? Two switches provided to select between Sine, Ramp and step inputs.
? Potentiometers to vary frequency, Amplitude and offset
DC SERVO MOTOR WITH EDDY CURRENT LOADING ARRANGEMENT:
? One 12V, PM DC Motor, mounted on a open frame
? Speed Range: 0 to 1500 RPM
? Speed Sensor fixed on the frame
? Photon interrupter with optical Encoders.
? Eddy Current Magnetic Loading Arrangement
SALIENT FEATURES:
• Front panel built with high class insulated Printed Circuit on Metal Board sheet with well printed circuits and symbols.
• Instruction manual.
• Connections are brought out through 4mm Sockets.
• Patch Cords 4mm.
• The trainer is housed in Metal cabinet.
• Size of the trainer set 18”x11”
OPTIONAL ACCESSORIES:
• No
TECHNICAL SPECIFICATIONS:
Digital Meters:
• DC Voltmeter 3.5Digit
Power Supply:
• +15V at 0.5A DC regulated output for control circuitry
• Operated on Mains power 230V, 50Hz +10%
It consists of
? PWM Chopper Drive using MOSFET
? DC Servo Motor
? Speed Sensor
? PID Loop for Speed.
? Sine and square wave generator setup for producing step, Ramp,sinusoidal waveforms. This Trainer system is a compact & advanced version for class room experiment set up for the students to operate and study a practical speed measurement using optical sensors and speed control system. A total of 16 experiments can be conducted by using this module.