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FAULT TOLERANT CONTROL OF ROTOR SWING 45
STABILIZER SYSTEM USING FMEA METHOD

Function failure modes Effects S Causes O RPN
Users cannot command to the 28
system Battery is 39
Users have to wait some time to 2 16
Battery does not transfer the power to command to the system 4 damaged 2 16
F9 master control unit System cannot produce any lifting Master control 2 16
force 39
System cannot produce any lifting unit is damaged 2 14
force 2 16
Power transfer is interrupted from System cannot produce any lifting 3 Battery losses
force efficiency 3 24
battery to master control unit Users have to wait some time for
roll damping 3 24
F10 Master control unit does not inform System cannot be retracted/opened 8 Master control
the battery to work Rotors cannot be rotated unit is damaged 3 21
3 21
System cannot produce any lifting User interface is 4 32
force 4 32
F11 User interface does not inform the 8 damaged
master control unit to work Extra resistance Master control

Rotors can be damaged unit is damaged

F12 Battery does not transfer the power to Rotors can be damaged 8 Battery is
power unit System cannot produce any lifting damaged
force
Power transfer is interrupted from Extra resistance 3 Battery losses
efficiency
battery to power unit

F13 Drive motor does not be activated 7 Power unit is
damaged

F14 Swivel motor does not be activated 8 Power unit is
damaged

Drive motor is

damaged

Power unit is

F15 Rotors do not be opened 8 damaged
Battery is

damaged

Master control

unit is damaged

Drive motor is

damaged

Power unit is

F16 Rotors do not be closed 8 damaged
Battery is

damaged

Master control

unit is damaged

Distance sensor is

F17 Depth and port distance do not be 7 damaged
sensed any Master control

unit is damaged

Depth and port distance do not be 7 Distance sensor
sensed correctively losses efficiency

F18 Drive mode does not be activated 8 User interface is
damaged

F19 Park mode does not be activated 8 User interface is
damaged

Sayı 7, 2016 GiDB|DERGi