| 摘要 |
The invention is directed to a motor comprising a movable member (1), plural-phase windings (2,3,4), voltage supplying means (50), including first and second output terminals, for supplying a DC voltage, Q pieces (Q is an integer of three or more) of first power amplifying means (11,12,13; 611, 612,613), each one of said Q pieces of first power amplifying means including a first power transistor (61; 62; 63; 451; 461; 621; 641; 1910) for forming a current path between the first output terminal side of said voltage supplying means and one of said plural-phase windings, Q pieces of second power amplifying means (15,16,17; 615,616,617; 815,816, 817), each one of said Q pieces of second power amplifying means including a second power transistor (65; 66; 67; 451; 461; 621; 641; 905; 925; 1910) for forming a current path between the second output terminal side of said voltage supplying means and one of said plural-phase windings, altering signal producing means (34) for producing altering signals, first distribution control means (30,37,41,42,43; 30,37,41,42,43,81,82,83,500; 30,37, 41,42,43,810) for controlling operations of said Q pieces of first power amplifying means, second distribution control means (30,38,45,46,47; 30,38,45,46,47,85,86,87,500; 30, 38,845,846,847,810) for controlling operations of said Q pieces of second power amplifying means, commanding means (20) for outputting a command signal corresponding to a rotational speed of said movable body, and switching operation means (21,22,23; 21,700,23; 21,800,23) for causing at least one power transistor among Q of said first power transistors and Q of said second power transistors to perform high-frequency switching, characterized in that said switching operation means (21,22,23; 21,700,23; 21,800,23) controls the peak value of a composed supply current to said plural-phase windings from said voltage supplying means responding with or corresponding to at least an output signal of said altering signal producing means as well as said command signal of said commanding means by the high-frequency switching of said at least one power transistor. |
