D4 7.4 V Power rail Overcharging/Failure Damage to all Observation High – > 7.4 V of battery components bloated battery/battery leakage, etc. D5 7.4 V Power rail Battery level too low, Robot will not Observation Low – < 7.4 V battery turn on, or is Robot does not “died” unstable work E1 Erractic behavior Decoupling Unable to control Observation High – of output pins of capacitors shorted robot Robot will digital isolator move erratically E2 No output to Digital isolators Motors will not Observation Low – motors failed, H-bridge run robot does not failed, move Cd(1/2)_iso(1/2) open circuited
D4 7.4 V Power rail > 7.4 V Overcharging/Failure of battery Damage to all components Observation – bloated battery/battery leakage, etc. High D5 7.4 V Power rail < 7.4 V Battery level too low, battery “died” Robot will not turn on, or is unstable Observation – Robot does not work Low E1 Erractic behavior of output pins of digital isolator Decoupling capacitors shorted Unable to control robot Observation – Robot will move erratically High E2 No output to motors Digital isolators failed, H-bridge failed, Cd(1/2)_iso(1/2) open circuited Motors will not run Observation – robot does not move Low
hw11_grp7.docx