1. Single-Axis Tilt-Sensor Systems Harry M.M. Kerkvliet and Gerard C.M. Meijer  Soz 2004.

2. Tilt sensors with electronic readout Improved accuracy Data storage Applicable in control loops

3. System set-up Resistive element Capacitive element

4. Resistive element Null impedance 1000  Null repeatability  3 arcsec Operating temperature –20 0 C to + 50 0 C

5. Connection with interface

6. Experimental results Resolution: 1 arcsec for measurement time of 1 s

7. Capacitive elements Advantages - non- invasive - low-cost

8. Interface

9. Experimental results for the capacitive sensor Resolution: 4 arcsec for measurement time of 1 s

10. Conclusions Two types of electronic tilt sensors have been implemented, using –resistive electrolytic elements –capacitive elements The resistive elements show a good linearity and a high resolution The capacitive sensors have the advantage of non-invasive electrodes, but the electrode structure should be improved

11. Questions ?  Soz 2004.