Vertaling van "pulse width modulation control" in Japans
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パルス幅変調制御
The first map is a map which includes a relatively wide rectangular wave control region (a3) because the pressure rising start point of the converter (12) is set within a higher rotation range than in the second map, and the second map is a map for mainly performing pulse width modulation control.
The voltage difference computing section (320) computes the difference between the voltage determined by a first voltage command in executing rectangular wave voltage control and the voltage determined by a second voltage command in executing pulse width modulation control.
A controller of rotary electric machine includes means (2) for detecting a rotary electric machine current generated in a rotary electric machine (1); means (3) for outputting an estimated position ϑp based on the rotary electric machine current; control means (4) for outputting a voltage command based on the estimated position ϑp; pulse width modulation means (5) for outputting a logic signal subjected to pulse width modulation based on the voltage command and a switching period used for pulse width modulation control; and means (6) for applying an AC voltage for driving the rotary electric machine based on the logic signal.
The mode change determining section (360) determines on the basis of the modulation factor whether or not it is necessary to change the control mode of the AC motor (M1) from the rectangular wave voltage control to the pulse width modulation control.
The control device is provided with: a control mode determination unit (20); voltage command value determination units (33, 43); a control signal generation unit (23); and an operating cycle setting unit (21), which, when the control mode determined by the control mode determination unit (20) is a pulse width modulation control mode, sets the operating cycle of the control signal generation unit (23) to a first cycle of N-times (where N is an integer of at least 1) the standard operating cycle set at 1/2 of the carrier period, and sets the operating cycle of the voltage command value determination unit (43) to a second cycle of M-times (where M is an integer of at least 2) the first cycle.
A phase difference between carrier signals used in pulse width modulation control for direct current voltage conversion with respect to the direct current power supply (10), and carrier signals used in pulse width modulation control for direct current voltage conversion with respect to the direct current power supply (20) is controlled corresponding to an operation status of the power converter (50).
Moreover, by performing pulse width modulation control and burst control capable of adjusting the ratio of an on-duty period against an off-duty period, it is possible to adjust the power supply to the load in a wide range, exceeding the limit of the pulse width modulation control.
An engine controller is provided with a stepping motor being a power source of a fuel pump sucking and discharging fuel from a fuel tank and a control unit controlling a fuel discharge amount by controlling pulse width modulation of applied voltage to the stepping motor, which is decided by a driving pulse control unit corrects a target driving pulse rate based on a battery voltage value of a battery, operates the driving pulse rate so that the driving pulse rate comes close to the corrected target driving pulse rate and corrects a pulse width modulation control duty ratio of pulse applying time of applied voltage based on the battery voltage value of the battery.
The control means (3) generates the control signals that adjust the brightness of the respective light emitting diodes (2) by use of a pulse width modulation control.
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