| 摘要 |
PURPOSE:To control a synchronous motor with a high control accuracy without effecting the feedback of a current, by a method wherein an impressing voltage phase difference angle and an impressing voltage crest value are operated in accordance with a torque commanding signal. CONSTITUTION:A first table 1 operates an impressing voltage phase difference angle delta with respect to a motor rotating number omega and a torque commanding signal T. A second table 2 operates an impressing voltage crest value V with respect to the motor rotating number omega and the torque commanding signal T. A rotating angle theta is added to the impressing voltage phase difference angle deltafrom the table 1 in an adder 4 while the added value theta'=theta+delta is supplied to a vector synthesizer 5 together with the impressing voltage crest value V from the table 2. The vector synthesizer 5 generates a 3-phase A.C. voltage commanding signal based on these input signals. |
