31results about How to "Meet engineering precision requirements" patented technology

The invention relates to a motion mechanism of a blast furnace top maintaining robot, comprising a support frame which is fixedly connected with the blast furnace top manhole and is positioned in thecavity of the blast furnace top. The support frame is provided with a rotary table, of which the rotary center is positioned in the center of the blast furnace top. The rotary table is provided with alifting platform in which a telescopic boom is arranged. The structure well realizes a three degrees motion of the structure. With simple structure, good rigidity, the motion mechanism of the blast furnace top maintaining robot can automatically and precisely control the moving position and meet the operation requirement of the industry robot.

The invention relates to an intelligent killing method and device for a complex pressure system formation, including: (1) real-time monitoring of the real-time information of the downhole-surface; (2) processing the real-time information of the downhole-surface, judging the downhole working condition, and if the When the downhole is abnormal, on the one hand, the uncertain parameters in the wellbore multiphase flow model are inverted in real time, and on the other hand, the wellbore pressure distribution is dynamically simulated and calculated; (3) the control signal is issued, and the throttling control parameters are intelligently optimized and designed, including the connection of the throttling valve. The method and pressure drop distribution plan can adjust the wellhead pressure in real time to maintain the bottom hole pressure constant, and at the same time, track the vertical pressure feedback of casing pressure, and intelligently optimize and adjust the well killing control plan through the feedback structure. The invention can automatically monitor the downhole working conditions in the whole process and in real time, and intelligently invert the formation pressure information according to the change trend of the measurement information, so as to achieve the purpose of abnormally accurate downhole, timely monitoring, and intelligent identification of formation information of a complex pressure system.

The invention provides a method for simulating an energy storage type regenerative energy absorbing device suitable for power flow simulation calculation, comprising the following steps: establishing a main circuit model, which is formed by connecting two branches in parallel, one of which is composed of a switching element K 1 , resistance element R , controlled voltage source U sc Formed in series, branch two consists of switching elements K 2 , controlled current source I sc Formed in series; establish the calculation unit of the control system, which is based on the constant parameters set before the simulation and the DC grid side voltage of the main circuit model collected in the simulation u dc , DC grid side input current i dc , and the control signal output by the calculation unit of the control system at the last simulation step soc , for each simulation step calculation. The invention simulates the complex electrical external characteristics of the energy storage type regenerative energy absorbing device by establishing a general-purpose main circuit model and a control system calculation unit, without building a converter circuit containing a large number of power electronic devices, which not only meets the engineering accuracy requirements, The simulation speed is also guaranteed.

The present disclosure relates to a method for calculating the distance between the rear of a vehicle and a parked vehicle in a shunting top-feed operation, wherein the shunting top-feed operation system includes shunting group members, shunting positioning equipment, an intelligent shunting server, and a laser emission Devices, locomotives. The shunting positioning equipment includes a shunting handheld station, a laser receiving device, and a retractable rod. The shunting handheld station includes a GPS positioning module; the locomotive includes a locomotive controller, a locomotive GPS positioning module, and a laser range finder. When the parking vehicle is located in a closed parking lot, the GPS positioning accuracy decreases. By enabling the laser positioning system, the GPS positioning information is corrected and the positioning accuracy of the parking vehicle is improved. Further, considering that the interference of the laser range finder is relatively large, the laser range finder is only activated after it is determined that the rear of the vehicle enters the straight segment and the distance between the rear of the vehicle and the parked vehicle is less than the threshold value, thereby greatly improving the accuracy of the laser ranging, and then Realize the precise control of the deceleration of the vehicle during the roof transfer operation.

The invention discloses an irrelevant multisource frequency domain load identification method based on a COMI-PSO (comprehensive improved particle swarm optimization) algorithm. The method includes the steps: firstly, decoupling a dynamical equation of load identification according to irrelevance of a plurality of load sources; secondly, identifying loads by the aid of a transfer function based on a unary linear regression model and the least square solution; thirdly, searching a feasible load solution and minimizing the maximum relative error of measured response; finally, performing search by the aid of the COMI-PSO algorithm to solve a simple target optimization problem, and identifying a plurality of irrelevant load sources. According to response signals of a plurality of measuring points, a plurality of irrelevant frequency domain load sources can be simultaneously identified, the problem of difficulty in obtaining the transfer function can be thoroughly solved, occurring ill-posed problems are solved by matrix inversion at resonant frequency, precision of multi-element load excitation identified by the method and sensitivity to measuring noise are superior to those of a traditional method, and 3db engineering precision requirements can be basically met.