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Controller for computer control of brushless dc motors. [automobile engines
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1981 |
| Description | A motor speed and torque controller for brushless d.c. motors provides an unusually smooth torque control arrangement. The controller provides a means for controlling a current waveform in each winding of a brushless dc motor by synchronization of an excitation pulse train from a programmable oscillator. Sensing of torque for synchronization is provided by a light beam chopper mounted on the motor rotor shaft. Speed and duty cycle are independently controlled by controlling the frequency and pulse width output of the programmable oscillator. A means is also provided so that current transitions from one motor winding to another is effected without abrupt changes in output torque. |
| File Size | 679778 |
| Page Count | 13 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810011824 |
| Archival Resource Key | ark:/13960/t4mm14w1v |
| Language | English |
| Publisher Date | 1981-02-03 |
| Access Restriction | Open |
| Subject Keyword | Electronics And Electrical Engineering Gates Circuits Controllers Torque Synchronism Oscillators Decoders Electric Motors Rotating Shafts Direct Current Comparators Electric Choppers Numerical Control Automobile Engines Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
