QuesTINU represents the research outcomes of TINU. The work of TINU till date is totally interdisciplinary. TINU is not at all bound to any particular subject. More than that, TINU is not restricted to any particular mainstream. People do not like this approach, but that is how TINU is shaping up. The accomplished projects of TINU are based on Engineering. So, here is how TINU has evolved till date:
Speed Control of Permanent Magnet Direct Current Motor Using Phase Locked Loop
The purpose of controlling the speed of dc motors can be accomplished by various methods. ‘Phase-locked loop control’ is one of the most convenient and efficient methods for the same. The Phase-locked loop principle has been used in applications such as FM (frequency modulation), stereo decoders, frequency synthesized transmitters and receivers, FM demodulators and frequency shift keying (FSK) decoders. This project explains the phase-locked loop based speed control of a dc motor.
Simulation of Variable Frequency Induction Motor Drive Using OrCAD PSpice
Computer Simulations enable engineers to study the behavior of complex and powerful systems without actually building or operating them. PSpice is one of the most widely used general-purpose simulation programs which is more specialized towards the power electronics and motor drives application area. SPICE means “Simulation Program with Integrated Circuit Emphasis”. The PSpice model consists of three main Components – PWM Generator, Inverter and Induction Motor. Using this model, one can study the torque, rotor speed, stator currents and voltages of Induction Motor, varying with respect to time.
Light Sensing Robot
The light sensing robot moves to the direction of light. If the light falls on the left side, then it will move towards the left side and same for right side. If the light on both sides is same then it will go straight. The model contains sensors (Light Dependant Resistors), comparators, drivers, motors, light sources and power source. Normally LDR (Light Dependant Resistor) has very high dark resistance, but when it is illuminated with light, resistance drops. The voltage across this resistor is fed to the comparator, which compares this voltage with a reference voltage and gives output according to that. If the output voltage of LDR is more than the reference voltage, the comparator will give output of 5 V. The core of project is the micro controller. The micro controller has the function of instructing the drivers to drive the appropriate motor after reading the direction of light falling on the sensors. In this project, AT89C51 micro controller is used, which has 4K bytes of flash programmable and erasable read only memory. The output current of micro controller is 10 to 15 mA which is not enough to drive the motors, so a driver IC (L293D) is used. The L293D is designed to provide bidirectional drive currents of up to 1.2 A at voltages from 4.5 V to 36 V. Thus the driver IC drives the motors and the robot moves.
Simulation of Obstacle Detection and Speed Control for Autonomous Robotic Vehicle
This project introduces a digital image processing algorithm to detect the obstacle in the path and according to the position of the obstacle, the speed of Autonomous Robotic Vehicle is controlled through PID based Speed control module. The camera mounted on Autonomous Robotic Vehicle captures image in such a way that the obstacle in image and actual vehicle position keep some distance to avoid collision. Based on the computed obstacle size, the vehicle actions are controlled. The streaming of the images of the path is done and each image is analysed through MATLAB Simulink based Video Processing Module. The control actions are taken based on the PID constants computed through MATLAB Simulink modules.
Controlling Hybrid Servo Drives by Arduino through Modbus RTU
We thought about Arduino while we were planning to replace PLC/HMI as Modbus Master. This project is the outcome of that thought. Ofcourse, this project can not be thought on a large scale setup, but it is worth for small scale automation industries.
Project Development with 20-in-1 Robotic Kit using ArduBlock
Ardublock is a plug-in of Arduino programming environment which is kind of Graphical User Interface for arduino IDE. ArduBlock allows user to visually program the arduino code with the use of code blocks. To understand it better, it basically lets the user to prefer logic to language. I have customized Ardublock here in order to execute project development with Robokits India’s 20-in-1 Robotic kit.
Carpe Diem !