Parcial 1 Flashcards
Robot
A goal oriented machine that can sense plan and act
General control model of a robot
Sense, think and act
What does a robot need for writing
Sense Cameras, position sensors, pressure or strength sensor Act Motors Planning Microprocessors
For flying
Sense
cameras, gps, accelerometers, gyroscopes
Act
Motors
Sensor
A device which responds to stimuli or an input quality by generating processable outputs
inputs are generally referred as mesurands
Actuator
Device capable of producing physical changes to the environment (part of the robot that produce the movement)
Transducer
Device that transform one type of energy to another
Range
Distance between the maximum and minimum values that an instrument can measure
Span
Distance between the maximum and the minimum value (absolute value) of the scale
Resolution
The minimum difference between two upcoming values that the sensor is able to distinguish or an actuator is able to produce
Calibration curve or characteristic curve
Curve describing the relationship between the measured variable or input(x) and the output (y)
Sensitivity
The slope of the calibration curve
The steeper the slope the better
Linearity
Similarity of the characteristic curve to a straight line
Is the equivalent to constant sensitivity
Hysteresis
Difference between output values corresponding to the same input, depending on the direction of change of the input variable
Accuracy
Refers to the closeness of a measured value to a standard or known value
Precision
Refers to the closeness of two or more measurements to each other
Selectivity
Capacity of a sensor to measure a single parameter without being affected by the presence of others
Response time
It is the time it take for a transducer to reach a stable output when it is exposed to a given input (also named as Rise time or settling time)
Vision sensors
Cameras, laser, ultrasonic, radar, lidars, stereo, kinect
Touch and hearing
Micro switches, limit switches, pressure, capacitive
Microphone
Kinesthetic and proprioception
Rotation and gps
Industrial proximity sensor
Limit switch, ultrasound, Inductive, Capacitive, photoelectric
Parts of a sensor
Sensitive element ( part that feels) and transducer (affected by the change of the sensitive element)
Passive sensor
The ones that don’t require any external source