control systems Flashcards
autonomoy
ability to make a decision and act on it
controllers
provide autonomy using hardware and software
transducer
device that converts one physical quantity into another
sensor
type of transducer that converts a measured quantity into an electrical signal
actuator
transducer that receives a signal and uses it to vary a physical quantity
driver device
needed to convert the digital signal produced by the controller into the right analog signal to activate the actuators
measurand
measured quantity
sensitive element
effect induced in a sensor by a measurand
sensitivity curve
graph provided by the manufacturer
deliberative control
think hard, act later
planning, searching, map
map
an internal representation of the world
path
a sequence of adjacent nodes between node vi and vj
total cost
sum of the costs of all edges in a path
Dijkstras algorithm
Greedy Best First Search
A*
reactive control
don’t think, react
no internal representation of the environment
needs a set of rules that are coupled with actions
calibration
tuning operation
active opto-sensors
produce a red light beam and measure the intensity of the light reflected from the illuminated surface
passive opto-sensors
measure ambient light
ultrasound
echolocation
photocell/photoresistor
semiconductor device that changes its resistance under the influence of light
open-loop control
no connection between actuation effect and the user’s goal
