4.3 servo mechanisms Flashcards
What is the main purpose of a servo?
Converts electricity into precise controlled motion
What type of motion can be generated from a servo?
Linear and circular motion
What type of device is a servo?
Electromagnetic
What is the main purpose of a synchro?
Measures angles of rotating machine angular position of rotating part transformed into voltage
What type of loop is more reliable open or close loop?
Close loop as it receives feedback and is an automatic error correction system
What is null voltage?
Transducer stator and rotor windings exactly perpendicular and no induced voltage
What is dead band also known as?
Neutral zone where no action occurs
What are the two types of synchro systems?
Torque system
Control system
What type of synchrony is used to control large components?
Control system
What is true about the Roto transmitter and rotor receiver?
Roto transmitter is mechanically positioned and generates an induced voltage
Rotor receiver is free to move as it follows the transmitter rotor
What is the purpose of a differential transmitter?
To add or subtract angles
How many state and Roto windings does a differential transmitter have?
Three stater windings and three rotor windings
What is a resolver?
Rotary electrical transformer used for measuring degrees of rotation
What is a LVDT?
An analog transducer
Linear variable differential transformer
What is an LVDT used for?
Convert linear motion into electrical signal
What analog terms producer is used to convert linear and rotary motion to electrical signal?
E and I bar transducer
