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Twin-capacitive shaft angle encoder with analog output signal
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hruby, R. J. |
| Copyright Year | 1977 |
| Description | A precision capacitive shaft encoder providing a dc signal corresponding to the angular position of a shaft is described. Two variable capacitances are coupled in tandem by a rotatable shaft. Each capacitor has a capacitance that varies linearly with a change in the angular position of the shaft. The sum of the two capacitances is always constant for any angular position of the shaft. Each capacitance is alternately coupled to a reference dc voltage and a discharge circuit. The capacitances are electrically coupled in series and the charge periodically acquired at the junction of the capacitance is a function of the position of the shaft. An error-compensating voltage is imposed on the junction when the capacitances are coupled to the reference voltages. The junction is coupled to sample-and-hold apparatus provided with a error-correcting circuit. |
| File Size | 747440 |
| Page Count | 9 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770024460 |
| Archival Resource Key | ark:/13960/t9b61cd2q |
| Language | English |
| Publisher Date | 1977-08-02 |
| Access Restriction | Open |
| Subject Keyword | Electronics And Electrical Engineering Analogs Coders Position Location Direct Current Capacitors Signal Generators Shafts Machine Elements Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
