<p>This motor control device (8a) is provided with: units (6-10) for acquiring information indicating motor speed (omega) and motor torque (T); an air flow computer (11) for computing the air flow (Q) of a fan (1) on the basis of the motor speed (omega) and motor torque (T); and a speed command generator (12) for generating a speed command (omega＊) for the motor (3) so as to cause the air flow (Q) to match a predetermined air flow command (Q＊).</p>
