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286results about How to "Reduce overload" patented technology

Control method and control device for bucket wheel material fetching machine with material measure and calculate

The invention provides a method for controlling a bucket-wheel reclaiming machine with material measurement and calculation, comprising the steps as follows: a current detection module (2) detects corresponding weak alternating current voltage signal from the line current of a bucket-wheel motor current circuit (1); the weak alternating current voltage signal is transmitted to a current / voltage signal conversion module (3) so that the rectification, voltage-stabilization and amplification treatment of the signal is carried out; the voltage signal which is processed by rectification, voltage-stabilization and amplification is input to a reclaiming automatic control module (6) which controls the actions of a revolving mechanism (19) and a truck feeding mechanism (20) according to the change of the voltage signal; and the actions of the revolving mechanism (19) and the truck feeding mechanism (20) cause the bucket-wheel motor current circuit (1) to change. The invention also relates to a reclaiming automatic control device. As the reclaiming automatic control method of the invention is adopted and the reclaiming automatic control device of the invention is installed, the functions of automatic control of reclaiming, flux display and alarming when the flux exceeds the arranged value can be quickly and simply realized at low cost.
Owner:BAOSHAN IRON & STEEL CO LTD

Image forming apparatus and drive control method for liquid ejection head

The image forming apparatus comprises: a liquid ejection head which includes a plurality of nozzles and a plurality of pressure generating elements provided correspondingly to the plurality of nozzles, the pressure generating elements being applied with drive signals to eject recording liquid from the corresponding nozzles; a plurality of driving wave generating circuits which generate drive-signal waves for driving the pressure generating elements; a circuit selecting device which selectively switches the driving wave generating circuits to apply the drive-signal waves to the pressure generating elements; a power source which supplies electricity to the pressure generating elements through the driving wave generating circuits; a connection control device which, in accordance with image data representing an image to be formed, selects at least one of the driving wave generating circuits used to drive the pressure generating elements, and controls connection between the at least one of the driving wave generating circuits and the pressure generating elements, so that instantaneous current consumption of each of the driving wave generating circuits falls within a specific allowable value; and a phase control device which controls phases of the drive-signal waves generated by the driving wave generating circuits so that the instantaneous current consumption at the power source falls within a specific upper limit.
Owner:FUJIFILM CORP

Image forming apparatus and drive control method for liquid ejection head

The image forming apparatus comprises: a liquid ejection head which includes a plurality of nozzles and a plurality of pressure generating elements provided correspondingly to the plurality of nozzles, the pressure generating elements being applied with drive signals to eject recording liquid from the corresponding nozzles; a plurality of driving wave generating circuits which generate drive-signal waves for driving the pressure generating elements; a circuit selecting device which selectively switches the driving wave generating circuits to apply the drive-signal waves to the pressure generating elements; a power source which supplies electricity to the pressure generating elements through the driving wave generating circuits; a connection control device which, in accordance with image data representing an image to be formed, selects at least one of the driving wave generating circuits used to drive the pressure generating elements, and controls connection between the at least one of the driving wave generating circuits and the pressure generating elements, so that instantaneous current consumption of each of the driving wave generating circuits falls within a specific allowable value; and a phase control device which controls phases of the drive-signal waves generated by the driving wave generating circuits so that the instantaneous current consumption at the power source falls within a specific upper limit.
Owner:FUJIFILM CORP
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