1. Synchro & Resolver A device called Selsyn was developed at 1925

2. Synchro Theory Synchro is variable rotary transformer.

3. Synchro Classification Transmitter Control Torque

4. Synchro Classification Receiver Control Torque

5. Synchro Classification Differential Transmitter Control Torque

6. Synchro Classification Control Torque

7. Synchro Advantages The controlling unit can be along distance from the controlled unit. Low consumption. Eliminates the necessity of mechanical linkage. Continues accurate and visual information. Good reliability and minimum maintenances. Small and light. Very fast.

8. Resolver

9. Resolver Theory

10. Signal Conditioning Resolver-To-Digital Converter(RTD /RDC) Basic Undersampling Oversampling

11. RTD Basic.

12. RTD Undersampling

14. RTD Oversampling

15. Oversampling TMS320F240

16. Resolver Advantages Accurate Absolute Position Sensor Small size Well-suited to severe industrial environments Not require ohmic contact. High reliability

17. Synchro& Resolver Application Naval weapons Radar antennas Aerospace Robotics