摘要:
A protection operation control part switches a gate signal interruption switch for protection of power elements to a gate signal interruption side, and invalidates a switching signal from a hybrid control unit to place transistors into a nonconducting operation. A motor current signal from a motor current detector is converted into a current value by a motor current calculation unit, and is inputted to a short-circuit abnormality detection unit through a motor control arithmetic part, and a short-circuit abnormality is detected. At a time of detecting the short-circuit abnormality, an internal combustion engine operation instruction unit gives an instruction to an internal combustion engine control unit so as to limit output of an internal combustion engine, and releases a conduction state of an abnormal motor current.
摘要:
A DC/DC power conversion device with smoothing capacitors including three column circuits share the smoothing capacitors to be connected in parallel, each column circuit have a plurality of circuits connected in series where two MOSFETs are connected in series between both ends of respective smoothing capacitors and LC serial bodies of capacitors and inductors with the same resonant cycle are disposed between the circuits at two middle terminals. Driving signals for the respective column circuits have the same driving cycle identical with the resonant cycle of the LC serial bodies, and are out of phase with each other by 2π/3(rad), and thus charge-discharge currents towards the smoothing capacitors are circulated among the column circuits and ripple currents flowing through the smoothing capacitors are reduced.
摘要:
There is provided an electroconductive paste composition that can form a coating film having satisfactory thickness by single coating work. The electroconductive paste composition can form bumps having satisfactory height even by a smaller number of times of coating than that in the prior art technique. The electroconductive paste composition comprises a phenolic resin, a melamine resin, an electroconductive powder, a solvent, and a bump forming aid comprising a monohydric alcohol having a terminal methoxy group and having at least one ether bond. The electroconductive paste composition can be used in a printed wiring board.
摘要:
There is provided an electroconductive paste composition that can form a coating film having satisfactory thickness by single coating work. The electroconductive paste composition can form bumps having satisfactory height even by a smaller number of times of coating than that in the prior art technique. The electroconductive paste composition comprises a phenolic resin, a melamine resin, an electroconductive powder, a solvent, and a bump forming aid comprising a monohydric alcohol having a terminal methoxy group and having at least one ether bond. The electroconductive paste composition can be used in a printed wiring board.
摘要:
In a wave gear device provided with a cup-shaped flexible external gear, the difference in the direction of the thrust force applied to the wave generator during speed reduction or speed increase is used to reduce the input-side holding torque. During speed reduction, thrust force F1 is applied to the wave generator in the direction toward the open side of the flexible external gear, and during speed increase, thrust force F2 is applied in the opposite direction The plug of the wave generator is pressed against the friction plate mounted on the motor housing by the thrust force F2 applied during speed increase, and the friction force that is produced is used as part of the input-side holding torque for restraining the wave generator from rotating.
摘要:
This invention has been realized in order to obtain green compacts of a fixed height by pressure molding of material powder with a fixed gap between upper and lower punches. A powder compacting method of this invention performs a punch driving step wherein, after filling material powder in a cavity, the material powder filled in the cavity is pressure molded by using an upper punch and a lower punch, said punch driving step comprising a primary driving step of driving either one of the punches until the thickness of the cavity formed between the upper and lower punches becomes slightly greater than a target molding thickness, and a secondary driving step of measuring a gap between the upper and lower punches and driving either one of the punches while controlling it until the measured value reaches the target molding thickness.
摘要:
The present invention relates to a power generation controller of a vehicle power generator, which includes: voltage detection means for sampling a voltage of a battery based on a reference clock signal; duty range setting means for setting a range for an ON/OFF ratio of a field switching element from the rotation speed of the power generator; control duty computation means for computing the ON/OFF ratio of the field switching element based on thus set duty range from a deviation between a power generation target voltage and voltage information as a result of sampling; and field PWM drive means for controlling the ON/OFF switching operation of the field switching element with an interval based on the reference clock signal from the computed ON/OFF ratio.
摘要:
A disassembling tool includes a holding block having a housing portion for accommodating a plug connector, a slide block, and a handling part for sliding the slide block. The plug connector comprises an outer member and a plug frame and is accommodated in the housing portion of the holding block. When turning a handle of the handling part, the slide block is slidably moved so that projections provided on the slide block release the locking between locking portions of the outer member and locked portions of the plug frame. Following this, contact portions provided on the slide block come into contact with the plug frame so as to push it out of the outer member by a given amount.
摘要:
A printing unit include a plurality of ink supply members for supplying inks different from each other to a printing area or printing area-like portion, and a plurality of detecting systems, each detecting an amount of the corresponding ink accumulated on the printing area or printing area-like portion. A control system controls the plurality of ink supply members to regulate an amount of ink supplied by each of the plurality of ink supply members so as to bring the amount of the corresponding ink accumulated into agreement with a predetermined value