Project 2 - Implement the Code for controlling the retraction and extension of Airplane’s landing gear
Ms. Abinaya Inbamani Mam Batch
Project 2 - Implementing the code for controlling the retraction and extension of Airplane's Landing Gear using Finite State Machine (FSM)
Overview of the Project:
In this project, controlling the retraction and extension of Airplane’s landing gear can be implemented using Finite State Machine (FSM). FSM is the most efficient algorithm which is mathematical model of computation.
Code Logic:
0. Initial State
Current State = Gear Down
Light Status = Green
1. Gear Down
If (Pilot lever == Rising && Squat Switch == Open)
then
Current state = Checking before take-off
Light status = Green
Else
Gear Down
2. Checking Before Takeoff
If (Pilot Lever == Falling OR Squat Switch == Close)
then
Gear Down
else If (Pilot Lever == Up AND Squat Switch == Open AND Hydraulic mechanism == Working)
then
Current state = Rising gear
Light status = Red
Direction Valve Status = Up
else if (Pilot Lever == Up AND Squat Switch = Open AND Hydraulic mechanism = Malfunctioning)
then
Current state = Rising gear
Light status = Red
Direction Valve Status = Up
Gas pressurized spring status = Enabled
3. Rising Gear
If (Pilot Lever == Falling && Limit Switch == Open)
then
Current State = Check before landing
Light Status = Red
Hydraulic pump control status = Down
If (Pilot Lever == Up && Limit Switch == Close)
then
Current State = Gear up
Light Status = Off
Hydraulic Pump Control Status = Disabled
else
Rising Gear
4. Gear up
If (Pilot Lever == Falling)
then
Current State = Check before landing
Light Status = Red
Hydraulic pump control status = Enabled
Else
Gear up
5. Checking Before Landing
If (pilot_lever == (UP OR Rising OR Falling)
then
Check before landing
else if (Pilot Lever == DOWN AND Hydraulic Mechanism == Working)
then
Current State = Lowering gear
Light Status = Green
Direction valve = Down
else if (Pilot Lever == DOWN AND Hydraulic Mechanism == Malfunctioning)
then
Current State = Lowering gear
Light Status = Green
Direction valve = Down
Gas pressurized spring status = Enabled
6. Lowering Gear
If (Pilot Lever == Rising AND Limit Switch == Close)
then
Current State = Checking before take-off
Light Status = Green
Hydraulic Pump Control Status = Enabled
If (Pilot Lever == Down AND Limit Switch == Open)
then
Current State = Gear Down
Light Status = Green
Hydraulic Pump Control Status = Enabled
Else
Lowering Gear
Code:
Output:
