Abstract: A motor control device 1 is provided with a neutral point shift section 11. The neutral point shift section 11 shifts a neutral point (command neutral point) of phase voltage commands Vu0*, Vv0*, Vw0* so that the values of the phase voltage commands Vu1*, Vv1*, Vw1* after the shifting of the neutral point come within the amplitude Vc of a triangular wave (triangular wave signal), and inputs the phase voltage commands Vu1*, Vv1*, Vw1* with the neutral point having been shifted, to a control signal output section 8. Thus, the motor control device 1 is enabled to heighten the output voltage without bringing about increase in manufacturing cost and substantial delay in calculation interval.

Abstract: A hydraulic control valve which comprises a casing having an oil inlet channel and an oil outlet channel and formed with groove portions and land portions arranged alternately in a specified direction, and a valve member having a return oil channel and attached to the casing so as to be movable relative thereto in the specified direction, the valve member having groove portions and land portions arranged alternately in the specified direction, the groove portions and the land portions of the casing being opposed to the land portions and the groove portions of the valve member respectively when the valve is in a neutral state, permitting oil supplied from the oil inlet channel to flow into the return oil channel, the valve member being movable from the neutral state relative to the casing for the land portions of the casing and the valve member to block communication betwen the oil inlet channel and the return oil channel to permit the oil supplied from the oil inlet channel to flow into the oil outlet channel