Vorrichtung und Verfahren zur Feststellung des elektrischen Winkels und Motorregelvorrichtung

摘要

An electrical angle detecting apparatus determines an electrical angleθfrom voltages Vd, Vq, and currents Id, Iq along a d-axis and a q-axis of a synchronous motor (40), by using the following expressions: $where\; (n-1)\; indicates\; a\; value\; of\; each\; variable\; at\; the\; previous\; timing;\; (n)\; indicates\; a\; value\; at\; the\; given\; timing;\; R\; is\; the\; resistance\; of\; a\; coil;\; t\; is\; the\; determination\; executing\; period;\; and\; k1,\; k2\; are\; coefficients.\; This\; determination\; makes\; it\; easier\; to\; set\; appropriate\; gains,\; so\; that\; precision\; improves.\; Furthermore,\; the\; amount\; of\; determination\; reduces,\; and\; the\; processing\; time\; shortens.\mathop{\mathrm{image}}$