Chapter 1 Synchros

• Synchro Fundamentals
• Figure 1-1.Phantom View Of A Synchro
• Synchro Classification
• Table 1-1.Synchro Information
• Military Standard Synchro Code
• Schematic Symbols
• Figure 1-3b.Schematic Symbols For Synchros
• Synchro Construction
• Rotor Construction
• 14187_23
• Stator Construction
• Torque
• Operating Temperatures And Speeds
• Figure 1-8.Operation Of An Electromagnet With A Bar-Magnet Rotor
• Figure 1-10a.Positioning Of A Bar Magnet With Three Electromagnets
• Figure 1-10d.Positioning Of A Bar Magnet With Three Electromagnets.
• Figure 1-11.Operation Of An Electromagnet With Ac Voltage
• Synchro Torque Transmitter
• Figure 1-13.Synchro Transmitter
• Synchro Torque Receiver
• Torque Synchro System
• Figure 1-16.A Simple Synchro Transmission System.
• Receiver Rotation
• Torque Differential Synchro Systems
• Torque Differential Transmitter
• Torque Differential Receiver
• Tx-Tdx-Tr System Operation (Subtraction)
• Figure 1-20b.Tx-Tdx-Tr System Operation (Subtraction)
• Figure 1-20d.Tx-Tdx-Tr System Operation (Subtraction)
• Tx-Tdx-Tr System Operation (Addition)
• Tx-Tdr-Tx System Operation (Subtraction)
• Tx-Tdr-Tx System Operation (Addition)
• Control Transformers
• Control Synchro System Operation
• Figure 1-26.Cx-Ct System Operation With The Cx Rotor At 0  And The Ct Rotor At 90
• Figure 1-27c.Control Synchro System Operation
• Figure 1-28.A Positioning Servo System Using A Control Synchro System
• Synchro Capacitors
• Figure 1-30.The Use Of A Synchro Capacitor With A Ct
• Figure 1-32.Synchro Current In A Control Synchro System Using A Cdx And A Ct
• Multispeed Synchro Systems
• Dual-Speed Synchro System
• Figure 1-35.Cutaway View Of A Double Receiver
• Tri-Speed Synchro System
• Zeroing Synchros
• Zeroing Transmitters And Receivers (Voltmeter Method)
• Figure 1-38a.Zeroing A Transmitter Or Receiver By The Voltmeter Method
• Zeroing Differential Synchros (Voltmeter Method)
• Zeroing A Control Transformer (Voltmeter Method)
• Figure 1-40b.Zeroing A Control Transformer By The Voltmeter Method
• Electrical Lock Method
• Figure 1-42b.Synchro Testers
• Troubleshooting Synchro Systems
• Trouble Indicators
• Figure 1-45.Simple Blown Fuse Indicator
• Table 1-3.Open Or Shorted Rotor
• Table 1-4.Shorted Stator
• Table 1-6.Wrong Stator Connections, Rotor Wiring Correct
• Voltage Testing
• Summary
• Summary
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• Summary
• Answers To Questions Q1. Through Q76.
• Answers To Questions Q1. Through Q76.
• Answers To Questions Q1. Through Q76.

Chapter 2 Servos

• Open-Loop Control System
• Operation Of A Basic Servo System
• Figure 2-2b.A Basic Servo System (Closed-Loop)
• Functional Servo Loops
• Figure 2-3b.Block Diagram Of A Position Servo
• Figure 2-4b.Development Of The Error Signal
• Figure 2-5.Typical Position Servo.
• Velocity Servo Loop
• Figure 2-7.Block Diagram Of A Velocity Servo
• Servo Characteristics
• Figure 2-8.Degree Of Damping
• Friction Clutch Damping
• Error-Rate Damping
• Frequency Response
• Bandpass Frequencies In A Servo System
• Servo Components And Circuits
• Error Detectors
• Summing Networks
• Figure 2-15.Crossed-E Transformer
• Rate Generator (Tachometer)
• Figure 2-16.Ac Drag-Cup Rate Generator.
• Modulators In The Servo System
• Figure 2-17.Crystal Diode Modulator.
• Demodulators In The Servo System
• Servo Amplifiers
• Ac Servo Motors
• Magnetic Amplifiers
• Figure 2-20.Magnetic Amplifier Used To Drive A Servo Motor
• Multi-Loop Servo Systems
• Summary
• Summary
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• Summary
• Answers To Questions Q1. Through Q25

Chapter 3 Gyros

• Basic Properties Of Gyroscopes
• Precession
• Basic Gyro Elements
• Rigidity
• Figure 3-6c.Gyro Rotors With Equal Weight And Unequal Diameters
• Precession
• Figure 3-7b.Gyro Action
• Figure 3-8.Force Applied To A Gyro
• Figure 3-9.Determining Spin Vector Direction
• Degrees Of Freedom
• Effect Of Rotation Of The Earth
• Figure 3-11b.Fixed Direction In Space. Gyro On Equator Viewed From Space
• Establishing And Maintaining A Fixed Position
• Mercury Ballistic Erecting System
• Figure 3-13.Rate Gyro (Single Degree Of Freedom).
• Figure 3-15.Precession Of A Spring Restrained Rate Gyro
• Figure 3-17.Torsion Bar-Restrained Floated Rate Gyro
• Figure 3-18.Rate Gyro, Cutaway View
• The Basic Accelerometer
• E-Transformer Accelerometer
• Pulse-Counting Accelerometer
• Summary
• Summary
• Summary
• Summary
• Answers To Questions Q1. Through Q23.

Chapter 4 Related Devices

• Figure 4-2a.Ic Versus Standard Synchro Connections
• Figure 4-2d.Ic Versus Standard Synchro Connections
• Step-Transmission Systems
• Figure 4-4a.Step-By-Step Motor In Various Positions. Voltage Applied To Number 1 Coils Only
• Figure 4-4c.Step-By-Step Motor In Various Positions. Voltage Applied To Number 2 Coils Only
• Resolvers
• Figure 4-6.Resolver Schematic
• Figure 4-8.One Example Of Composition
• Summary
• Summary
• Answers To Questions Q1. Through Q4

Appendix I Glossary

• Appendix I Glossary
• Appendix I Glossary
• Appendix I Glossary
• Appendix I Glossary
• Appendix I Glossary

Module 15  Index

• Module 15  Index
• Module 15  Index

Assignment Questions

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