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687results about How to "Reduce deviation" patented technology

Differential circuit, amplifier circuit, driver circuit and display device using those circuits

A differential circuit and an amplifier circuit for reducing an amplitude difference deviation, performing a full-range drive, and consuming less power are disclosed. The circuit includes a first pair of p-type transistors and a second pair of n-type transistors. A first current source and a first switch are connected in parallel between the sources of the first pair of transistors, which are tied together, and a power supply VDD. A second current source and a second switch are connected in parallel between the sources of the second pair of transistors, which are tied together, and a power supply VSS. The circuit further includes connection changeover means that performs the changeover of first and second pairs between a differential pair that receives differential input voltages and a current mirror pair that is the load of the differential pair. When one of the two pairs is the differential pair, the other is the current mirror pair. In a differential amplifier circuit, there is provided an added transistor connected in parallel to a transistor, which is one transistor of a differential pair transistors, whose control terminal is a non-inverting input terminal. The added transistor has a control terminal for receiving a control voltage which is set so that, when an input voltage applied to the non-inverting input terminal is in a range in which the transistor whose control terminal is the non-inverting input terminal is turned off, the added transistor is turned on.
Owner:RENESAS ELECTRONICS CORP

Complete roll forming configuring method for wide flat steel hot rolling finish mill set

The invention relates to a complete roll forming configuring method for a wide flat steel hot rolling finish mill set. According to the characteristics that an upstream machine frame controls the convexity and a downstream machine frame controls the flatness in the seven-machine frame and four-roll hot rolling wide flat steel finish mill, a finish rolling inlet machine frame F1 adopts negative convexity working roll forming, a machine frame F2, a machine frame F3 and a machine frame F4 adopt cubic CVC working roll forming, and a machine frame F5, a machine frame F6, and a machine frame F7 adopt negative convexity working roll forming of sine curves and are matched with periodic roll shifting of the working roll with long stroke. The supporting rolls of all the machine frames of the finish mill set adopt positive convexity roll forming of sextic polynomes. The method improves the transverse rigidity of the machine frames of the finish mill, improves regulation and control efficiency of roll bending force of the working roll, and reduces flexibility deformation of the roll. The roll forming configuring method for the finish mill set improves stability of the wide flat steel rolling, reduces the deflection amount of the wide flat steel, prolongs the planned length for rolling and greatly improves profile shape control precision of the wide flat steel.
Owner:SHOUGANG CORPORATION

Method for setting in-furnace tension of continuous annealing unit on line

The invention relates to a method for setting the in-furnace tension of a continuous annealing unit on line. The method comprises the following steps of: collecting the equipment structural characteristic influence coefficient and the sectional influence coefficient of a continuous annealing furnace and the furnace roller diameter of each section of the continuous annealing furnace; calculating a model coefficient in consideration of the influences of deviation, buckling and plate shape; calculating a preset value of the in-furnace tension of the continuous annealing unit; and putting the set value Tactmi of the in-furnace tension of the continuous annealing unit into the operation of the unit so as to finish the steps of setting the tension on line and the like. The method mainly has the advantages that: (1) by adopting a tension optimization model, the type and the specification of steel and the influence of the plate shape of an actually-supplied material are considered, namely one more dimension is considered; (2) actual equipment characteristics and an annealing process regulation can be completely combined by the tension model; and (3) in consideration of the problem of the comprehensive treatment of thermal buckling and deviation, the tension model is more flexible and more practical than a fixed table, and the model is simple and can be applied on line.
Owner:SHOUGANG CORPORATION
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