| 摘要 |
The proposed process forsees the following phases: a) measuring, with the RC method, the mechanical angle between the polar axes of the rotor and the stator of a resolver, one of which is integral with the rotor of the motor; b) opening and subsequent closing of a counting window that gives the ''enable'' to ''count'' to a counter that is fed by a clock, in such a way that the number of counted impulses univocally corresponds to the measured angle; during this phase a count adjustment is possible, by modifying its contents according to other external factors; c) transmitting this count as an address to a memory where for each numerical data received, the wave-form required to control the synchronous motor are stored; d) transmitting the storage outputs to a multiplying digital to analogic converter having a multiplication coefficient established by the factor that has to be externally adjusted. e) acting on the contents of the counter, modifying them according to other external factors such as speed, voltage, current or the like. |
