30results about How to "Achieve stability control" patented technology

The invention discloses an insulator clamping jaw. The insulator gripping jaw comprises a connecting frame, two clamping jaws, two clamping jaw arms, two connecting rods, a screw rod and a sliding block, the two clamping jaw arms are rotationally installed at the first end of the connecting frame and are symmetrically distributed, the first ends of the two clamping jaw arms are connected with theclamping jaws correspondingly, and the second ends of the two clamping jaw arms are connected with the sliding block through connecting rods correspondingly. A mounting cavity is formed in the connecting frame; the sliding block is slidably mounted in the mounting cavity; the screw rod is rotationally mounted on the connecting frame, movably penetrates through the sliding block and is in threadedfit with the sliding block, and the first end of the screw rod extends out of the second end of the connecting frame; the first ends of the two connecting rods are hinged to the second ends of the clamping jaw arms respectively, and the second ends are hinged to the sliding block respectively. The opening and closing degree of the arc-shaped clamping jaw can be stably controlled, the grabbing andclamping efficiency is improved, and smooth operation of insulator maintenance and monitoring work is guaranteed.

The invention discloses a method for controlling the frequency stability of a battery energy storage power grid based on big data, which belongs to the technical field of power grid stability control. The method comprehensively considers temperature, humidity and other influencing factors when calculating power, so that the calculation result is more accurate. Design a standard function about the battery temperature in the selection of temperature, choose the temperature under reasonable and normal working conditions, reduce the error of the whole device control caused by the temperature error, and choose the PWM inverter structure to control the battery energy storage device Grid-connected, through the control of the combination of active and reactive power of battery energy storage, the control of the system has a certain degree of self-adaptation.

The invention discloses a design method for an intelligent electric appliance general structural member of a building block combination type, and irons out a defect that poor universality of parts of switch socket electric appliance products in the prior art causes tedious and burdensome design tasks for various types of products and the increase of types of dies and earlier investment of products. The method is characterized in that the method comprises the steps: general structural member planning, general structural member design, and product design; the general structural member design comprises the design of a first panel outer frame, a second panel outer frame, an upper lining plate and a metal lining plate, enabling the general structural member to be combined and matched with other parts in a mode of building block combination, building an electric appliance switch, an electric appliance socket or a scene controller product, which are of different types and have different functions; the beneficial effects are that the universality of the general structural member reaches 75%-93%, is convenient to disassemble and assemble, and is easy to assemble and adjust; the types of dies are reduced, and the production cost is reduced; the assembly process is simplified; the development cycle of products is shortened; and the machining workload is increased.

The control method uses voltage as first controlled variable, current as second controlled variable, power factor as third controlled variable, reactive current as fourth controlled variable, number of loop as fifth controlled variable. Comparing voltage, current, power factor, reactive current, and number of loop with their threshold values setup in advance, the method carries out voltage control, current control, power factor control, reactive current control, and number of loop control in sequence. Whole procedure is a large circulation. Based on ever changing parameter such as voltage, current, power factor, reactive current, and number of loop of product, the method does corresponding handling to implement synthetical and stable control.

The general switch socket panel of the building block combined smart electrical appliances overcomes the lack of versatility of the components of the switch socket electrical products in the prior art, which brings heavy design tasks to the demand for multi-variety products, and increases the types of molds and the initial investment in products The problem of cost is characterized in that the second panel outer frame is provided with the first molding process hole, the first buckle and the first outer frame groove with the same structure as the first panel outer frame, the first panel outer frame, the second panel outer frame The outer frame of the second panel is provided with the same rectangular central cavity as the upper liner and the metal liner, and the first buckle and the buckle groove of the upper liner are passed between the first panel outer frame or the second panel outer frame and the upper liner The beneficial effect of the connection is that the common structural parts are designed with the same structure, and the products have the same elements, which is not only convenient for disassembly and assembly, but also easy for assembly and adjustment, which reduces the types of molds, reduces production costs, and simplifies the process of assembly. The product development cycle is shortened, and the processing workload is reduced.

The invention belongs to the field of hot continuous rolling machinery, and particularly relates to a zero adjusting horizontal method for a pinch roll of a hot continuous rolling mill recoiling machine. According to the technical scheme, the zero adjusting horizontal method for the pinch roll of the hot continuous rolling mill recoiling machine is characterized in that pressure sensors are installed on a transmission side and an operation side of the pinch roll of the hot continuous rolling mill recoiling machine; after the pinch roll is raised quickly, namely the pinch roll is in the maximum position, the values of the pressure sensors on both sides are right, namely a rodless cavity pressure is a system pressure and a rod cavity pressure is zero, but if the pressures are not right, examination and determination are needed, and a hydraulic system is examined or the pressure sensors are replaced according to specific practical conditions; and after the pinch roll is raised quickly, namely the pinch roll is in the maximum position, if the values of the sensors at both sides are different but not the same, an eccentric pin needs to be adjusted anticlockwise or clockwise till the values are the same. The method has the beneficial effects of solving the problem that long-term adjustment is needed after a pinch roll of an existing hot continuous rolling mill recoiling machine is replaced, solving the problem of bad coiling shape caused by a non-horizontal zero adjusting position after the pinch roll during hot continuous rolling is replaced, ensuring the quality of band steel products and realizing stable control of the hot continuous rolling mill recoiling machine.

The invention provides a method for improving cleanness of Nb-Ti containing steel. The method comprises the following steps of: smelting in a top-bottom combined blowing converter under the condition of argon gas bottom-blowing in the whole process; adding small-grain limes and fluorite in a steel tapping process; adding slow-release deoxidizing agent to the top of the slag after the steel tapping; carrying out secondary refining onto molten steel; feeding the refined molten steel to a continuous casting process for carrying out full-protection casting. According to the invention, low-nitrogen molten steel is obtained by adopting an argon gas bottom-blowing mode in the whole converter smelting process, calcium treatment and soft blowing are performed after LF (Low Frequency) furnace refining desulfuration and heating up, Nb-Ti alloying is carried out and the alloy melting is promoted by carrying out soft blowing again. Moreover, oxide impurities can be reduced by calcium pre-treatment and a soft-blowing process, the Nb-Ti alloy is promoted to melt by the soft blowing, impurities are removed by RH (Ruhrstahl Heraeus) vacuum refining and degassing, impurities are further removed by carrying out soft blowing after breaking the vacuum, and casting blank segregation can be weakened by continuous casting and low-superheat-degree casting, so that the purpose of controlling the oxide impurities and the nitride impurities in the steel is achieved.

The invention discloses a parachuting-type small unmanned aerial vehicle stable control method and system. Geomagnetic elements of a geomagnetic field on the X axis, the Y axis and the Z axis of a body axis system of an unmanned aerial vehicle are measured by means of a three-axis magnetic sensor, and a steering engine which needs to be controlled and control quantities are determined according to changes of the measured geomagnetic elements. The method is simple and easy to carry out, the problem that real-time posture information cannot be obtained after the unmanned aerial vehicle dives and hikes and a global positioning system and a gyroscope cannot work normally is solved, and stable control of the unmanned aerial vehicle can be automatically finished.

The present application provides a dual-temperature air-conditioning system, a control method, and an air conditioner. The dual-temperature air-conditioning system includes: a compressor, an outdoor heat exchanger, a first indoor heat exchanger and a second indoor heat exchanger; the first pipeline and the second pipeline are connected to the outdoor heat exchange through the third pipeline device, a first throttling device is set on the third pipeline, and a second throttling device is set on the second pipeline; the opening degree of the second throttling device is fixed, and the opening degree of the first throttling device can be changed from the preset Select the corresponding opening reference and opening upper and lower limits from the opening table of the throttling device, and control and adjust according to the first exhaust temperature or the second exhaust temperature of the compressor; or, according to the third row of the compressor The third exhaust gas temperature at the air port is controlled and adjusted. According to the present application, the stable control of the two throttling devices in the dual-temperature air-conditioning system can be realized, and the stable, reliable and efficient operation of the dual-temperature air-conditioning system can be ensured.