Mechatronics - May 2016

MU Mechanical Engineering (Semester 6)

Total marks: --
Total time: -- INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary 1(a) Explain Universal Asynchronous Receiver and Transmitter (UART) 5 marks

1(b) With a neat block diagram explain the architecture of a mechatronics system. 5 marks

1(c) Write short note on supervisory control and data acquisition (SCADA) 5 marks

1(d) Write short note on (i) Harmonic drive (ii) Data loggers 5 marks

2(a) With neat sketch explain the constructional feature and working of pressure relief valve used in hydraulic system 5 marks

2(b) Explain the central theme of velocity profile optimization of DC motor. 5 marks

2(c) Explain with neat sketch principle of operation of AC induction motor. 5 marks

3(a) Two double acting pneumatic cylinders A, B are selected for an industrial application. The sequence of movement for piston of the cylinder is proposed as below-
A + Delay B + Delay (AB)-
Develop the electropneumatic circuit using 5/2 double solenoid as final directional control valves. The piston motions mentioned in bracket is simultaneous. 5 marks

3(b) Explain impedance matching for a part of electromechanical system that consists of transmission of power using motor-gear drive system. 5 marks

4(a) Explain input and output components (typically sensors, actuators and motors) used in Wireless Surveillance Balloon 5 marks

4(b) With neat diagram illustrate the working of Filter-Regulator-Lubricator (FRL) unit in a pneumatic system. 5 marks

4(c) Explain with neat sketch working principle of DC motor 5 marks

5(a) With schematic representation explain the mechatronic system typically used in robot for firefighting application (typically highlight the selection of motor, sensors and switches. Also discuss their interfacing. 5 marks

5(b) Describe possible speed control strategies of A.C> Induction motors. 5 marks

5(c) Write a short note on servo amplifier for DC motors. 5 marks

6(a) A process control system illustrate in figure 1 is used to fill the bottle and convey the same. The outlet valve is opened to fill the bottle as when the limit switch senses the presence of the bottle and is closed automatically when the photo sensor produces the signal as when the bottle is filled. The level of water in the tank is maintained through a control valve. Develop a PLC ladder logic diagram for this control application.
5 marks

6(b) Write short note on (i) Piezoelectric drive (ii) Voice-coil actuator 5 marks