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21 lines (21 loc) · 2.65 KB
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module;function;failure mode;failure cause;severity number;failure detection;compensation provision;probability number;criticality number;comments
Firmware;Motor Control;Motor is not running;Voltage too low;3;ADC measurement;Report to next level;2;6;
Firmware;Motor Control;Motor is not running;Mechanical failure;3;Overcurrent / no current;Report to next level;1;3;
Firmware;Motor Control;Wrong motor speed;Wrong command received;3;Testing during development phase;Quality assurance;1;3;
Sensors;Gyroscope;Values out of limits;Electromagnetic glitch (EMC) affecting the sensor;1;ADC measurement and compare with expected values;"Ignore faulty data; Switch to safe posture mode";2;2;
Sensors;Position Sensor;Signal is 0 or Maximum;Broken cable;1;ADC measurement and compare with expected values;Switch to valid backup position sensor;2;2;
Sensors;Accelerometer;Values out of limits;Electromagnetic glitch (EMC) affecting the sensor;1;ADC measurement and compare with expected values;Ignore defect sensor data;2;2;
Power Supply;12V;Undervoltage;Short circuit by thermal / grounding straps;3;ADC measurement;Monitor assembly process;1;3;
Power Supply;12V;Undervoltage;Loosened fastening;3;ADC measurement;Monitor assembly process;1;3;
Power Supply;12V;Undervoltage;PCDU malfunction;3;ADC measurement;Report to next level;2;6;
Power Supply;12V;Undervoltage;Fuse blown;3;ADC measurement;Report to next level;2;6;
Power Supply;12V;Overvoltage;PCDU malfunction;3;ADC measurement;Report to next level;2;6;
Power Supply;5V;Undervoltage;Short circuit by thermal / grounding straps;3;ADC measurement;Monitor assembly process;1;3;
Power Supply;5V;Undervoltage;Loosened fastening;3;ADC measurement;Monitor assembly process;1;3;
Power Supply;5V;Undervoltage;PCDU malfunction;3;ADC measurement;Report to next level;2;6;
Power Supply;5V;Undervoltage;Fuse blown;3;ADC measurement;Report to next level;2;6;
Power Supply;5V;Overvoltage;PCDU malfunction;3;ADC measurement;Report to next level;2;6;
Power Supply;Voltage Regulation;Undervoltage (12V / 5V);Blown fuse, converter malfunction, or short circuit;3;Monitor voltage levels continuously via ADC;"Report to main computer; Reboot system to clear latch-up";2;6;
Motor;Rotation & Torque;No movement;Cold welding;3;High current draw but no motor movement;Control mode is to be triggered to start a break free action with high currents for short duration;2;6;
Motor;Rotation & Torque;High current;Cold welding;3;High current draw but no motor movement;Control mode is to be triggered to start a break free action with high currents for short duration;2;6;
Motor;Temperature Control;No temperature measurement;Sensor failure;2;Temperature value implausible;Quality assurance;2;4;