Interface of Input and Output Input-Output-Constraint (IOC[N])Diagrams... Incoming Desired Functional Measures: .Transformations..Outgoing Desirable Functional Measures: System 刀MaSS Subsystem or Mass NOISE NOISE Subassembly Energy Constraining Regts: E1ergy刀 NOISE 1.Size NOISE 2.Weight 3.Power Consumption 刀Information 4.etc.,etc....... Information刀 NOISE NOISE Transformations.. Incoming Un-Desired Outgoing Un-Desirable Functional Measures: Functional Measures: Qi Van Eikema Hommes, ©June12,2013 qhommes@mit.edu CLGO System Engineering by J.J.Gao 11
+ - System Engineering by J. J. Gao 11 Interface of Input and Output
Type of Interface mass flow web site html file Valve Tank mn (URL) Browser data momentum trigger Rocket Payload Motion Alarm F△t Sensor command Heat flux Heat NPR News Exchanger Air Radio Listener ( cognitive Electrical power flux feelings Solar Cell Patient Psycho- Battery UI affective therapist CLGO System Engineering by J.J.Gao 12
+ - System Engineering by J. J. Gao 12 Type of Interface
Physical Connection Two parts are in direct physical connection if they touch each other examples:rollers,brake pad disk,finger touchscreen have a reversible connection between them examples:electrical connectors,USB port/cable,latch mechanism,bolts nuts are permanently connected to each other examples:rivets,spot-welded Quantifiable interaction Force [N],Torque [Nm] 2 OPM K Clutch Main Important Note: 3 Main Motor Motor physical connection BTR Clutch 3 implies symmetric BTR entries in the DSM Drive Engaging Clutch 2 DSM K Drive (action=reaction) Clutch CLGO System Engineering by J.J.Gao 13
+ - System Engineering by J. J. Gao 13 Physical Connection
Physical Connection Examples Reversible structural links Irreversible structural links Part bolting Part 1 welding 2 Main.f Sub1.f Sub2.f Main.o Sub1.o Sub2.o RJ-45 jack Main.exe compiling connecting CLGO System Engineering by J.J.Gao 14
+ - System Engineering by J. J. Gao 14 Physical Connection Examples