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Robotics Main Glossary


A glossary of terms of robotics

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O
Open Loop
by Graham Betts - Sunday, 21 August 2005, 06:29 PM
 An open loop system receives no feedback from the system. A volume knob on a television or mp3 player is an example of a closed loop.
Keyword(s):
Overdamping
by Graham Betts - Sunday, 21 August 2005, 06:42 PM
 Overdamping occurs when the system achieves the desired result without overshooting, but takes longer than necessary to do so, as the critical elements require a slow response time. In overdamping the system response has been overly slowed down. This allows for finer adjustments but much slower response times to feedback.
Keyword(s):
P
Pneumatic Actuator
by Graham Betts - Saturday, 20 August 2005, 10:55 AM
 Pneumatic actuators use compressed gas to force the movement of pistons through the use of pumps and valves and so allow movement of the robotic part. Pneumatic actuators work on the same principles as hydraulic actuators using a series of valves, pumps and pistons to gnerate movement in the robot.
Keyword(s):
PROLOG
by Graham Betts - Sunday, 21 August 2005, 07:24 PM
 PROLOG was developed in 1970. It is a non-procedural language which helps a system to learn and so is used for artificial intelligence. It uses sets and subsets which are added to as the system comes across new input. New input is compared to previous inputs and the various sets are added to as applicable.
Keyword(s):
R
Relay
by Graham Betts - Saturday, 20 August 2005, 11:12 AM
 A relay is an electromechanical switch that uses an electromagnet to open or close one or many sets of contacts. In other words iut turns things on or off. When the relay is activated an electromagnet is turned on which will turn the relay switch on. A relays normal position may be on. In this case an electro magnet would actually turn the swict off.
Keyword(s):
robot
by Graham Betts - Thursday, 18 August 2005, 04:15 PM
 A robot is a machine which can be programmed to perform tasks and which will be able to adjust to its environment through use of sensors
Keyword(s):
S
Sentinel Robots
by Graham Betts - Sunday, 21 August 2005, 08:30 AM
 Sentinel robots are used by the military to fly over enemey territory and report back through video Robotics gains in prestige, in part due to military conflicts, Invasion of the Robots
Keyword(s):
Solenoid
by Graham Betts - Saturday, 20 August 2005, 10:55 AM
 A solenoid is simply a bit of wire wrapped around a magnet which produces a magnetic field when electric current is passed through it. Depending on the direction movement of the electrical current, which depends on which side the positive and ngative terminals are connected, will decide which sides have the north or south poles and so force movement through repelling or attracting.
Keyword(s):
Stepper Motor
by Graham Betts - Saturday, 20 August 2005, 10:55 AM
 Stepper Motors are also called step motors and allow small precise movements. Stpper motors are electrical motors that move a series of small gears fixed increments each turn (step) of the motor. These are typically used in printers and scanners to move the heads. Not appropriate for heavy loads.
Keyword(s):
U
Underdamping
by Graham Betts - Sunday, 21 August 2005, 06:47 PM
 Underdamping is the opposite to overdamping. Damping is the process of slowing a response time or lessening the response. When underdamping occurs the system response time or degree of response to feedback has not been damped enough so that when underdamping occurs the desired effect is achieved through the system seesawing through the critical condition, such as a car fishtailing because of speeding and adjustment to direction being made too fast. Each time the adjustment is smaller until the desired value is reached. These systems are not as stable as overdamped systems.
Keyword(s):
Separate and Connected ways of knowing

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