Mini Projects
Helicopter Dynamics Control System
A large helicopter uses two tandem rotors rotating in opposite directions, as shown in Figure P7.33(a). The controller adjusts the tilt angle of the main rotor and thus the forward motion as shown in Figure 1. The helicopter dynamics are represented by
And the controller is selected as,
Figure 1.
a) Sketch the root locus of the system and determine K when of the complex roots is equal to 0.6.
b) Plot the response o f the system to step input and find the settling time and overshoot for the system of part (a).
c) What is the steady-state error fora step input.
d) Using Scilab, plot system response to step input.
3. Aircraft Autopilot Control System
A high performance jet aircraft with an autopilot control system with unity feedback is shown in Figure 2.
Figure 2.
a) Sketch the root locus of the system.
b) Select a gain K such that overshoot is less than 20% for step input.
c) Sketch the overall transfer function versus s using Scilab.
d) Plot system output versus t, using K as determined in 2(b).
4. Automatic Vehicle Control
An automatic vehicle driving system is modeled in Figure 3, where is the transfer function of the vehicle and the the transfer function of the controller (driver). The driver develops anticipation of the vehicle deviation from the center line.
Figure 3.
a)Plot Bode diagram for the system, assuming K=1.
b)Compute phase and gain margins.
c)Design the controller to have a system phase margin of 50 degrees.
d)Draw plot of the system output for step input using Scilab.
5. Planet Exploration System
An unmanned planet exploration system, which required a high level of automatic control, is shown using block diagram in Figure 4.
Figure 4.
a) Sketch the Bode plot for the system.
b) Compute phase and gain margins.
c) Tune the controller such that gain margin of the system is +20 db.
d) Plot the transfer function versus s using Scilab.
6. Automatic Anesthesia Control
An automatic anesthesia control system model is shown in Figure 5.
Figure 5.
a) Draw Bode diagram for the system.
b) Design the control parameter K, such that phase margin of the system is 45 degrees.
c) Using Scilabplot the transfer function versus s.
d) Using Scilab plot system output for step input.
7. Missile Control System
A high-performance missile control system needs sophisticated control mechanism. A model of a missile system with a cascaded compensation network is shown in Figure 6.
Figure 6.
a)Design the compensator lag network that will provide a phase margin of 30 degrees.
b)Draw root locus of the overall system.
c)Using Scilab, plot system output versus time for a step input.
8. Control of Planetary Rover Vehicle
A rover vehicle designed for planetary exploration is shown in Figure 7(a) and its model is shown in Figure 7(b), where .
Figure 7.
a) Assume and draw root locus of the system when K varies from 0 to 1000.
b) Calculate overshoot and settling time for step input when K = 10.
c) Using Scilab, plot the system output versus for ramp input.
9. Controlling an Inverted Pendulum
10. Automatic control of Air Conditioner Temperature
11. Automatic Control of Water Gate to Prevent Flood in Perlis
12. Automatic Control of Table Fan Speed based on Temperature
13. Humidity Controller for Dry Enviorment
14. Controlling of Oxygen Level in Fish Aquarium