KINESIOL 4V03 Lecture Notes - Lecture 2: Pilot Error, Cruise Control, Thermostat
28 Dec 2016
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Document Summary
A combination of one or more human beings and one or more physical components interacting to bring about, from given inputs, some desired output. Common concept of a (cid:494)machine(cid:495) is too restrictive: can be very simple, dotted line is interaction, error (failure) can occur at any of these spots. Three broad classes of systems: manual. Consists of hand tools or other aids which are coupled with a human operator. The human supplies the power source and controls the operation. Machine does what it is designed to do: mechanical. Power is generally supplied by the machine. Human operator supplies the control: automatic. System provides all operational functions with little or no human intervention. Generally require humans to install, program, reprogram and maintain the system. Characteristics of a system: systems have purpose. Purpose is its goal or objective (s: hierarchical. Some systems can e considered part of others, larger systems (subsystems) Ex, riding a bike on the hamilton trail.
