239 results about "Pressure response" patented technology

The invention relates to the technical field of response time testing of electro-hydraulic proportional valves, and discloses a response time testing method and system of an electro-hydraulic proportional valve, and the method comprises the steps: collecting multi-point pressure, step response, pipeline length and medium parameters, and unifying the time reference to obtain an original pressure sequence; constructing an inverse filter spectrum to remove damping interference so as to recover a sharp peak value; lagging offset is calculated according to pipeline and medium parameters, time delay compensation is carried out, and an alignment sequence is obtained; intercepting a non-stationary segment to eliminate residual delay deviation; constructing a response dynamic data set, extracting harmonic frequency domain representation, and reconstructing a pressure sequence through inverse transformation and superposition of compensation factors; and calculating a deviation integral quantity, adjusting a dynamic compensation parameter, performing weighted correction, and outputting an optimized reconstruction response sequence. According to the method, accurate reconstruction of the real pressure response of the proportional valve can be realized, so that the accuracy and the reliability of response time testing are improved.

The invention discloses an abnormity monitoring method and system for a digital pressure transmitter, and relates to the technical field of transmitter monitoring, and the method comprises the following steps: obtaining an original pressure response sequence in a high-frequency pressure pulsation environment, and synchronously recording a sampling clock pulse sequence in an acquisition process, establishing double-track mapping based on the original pressure response sequence and the sampling clock pulse sequence, and forming an input condition with a unified time baseline; and performing instantaneous phase difference extraction on the double-track mapping on the unified time base line. Through double-track mapping, phase difference extraction and nonlinear cross spectrum reconstruction, the stroboscopic aliasing risk is quantified and recognition in advance is realized, and the sensitivity and accuracy of abnormal monitoring of the digital pressure transmitter are improved; meanwhile, the multi-scale risk amplification and reversible time-frequency rearrangement technology is combined, covered high-frequency components are separated and recovered, a real pressure pulsation curve is output after dynamic correction, continuous and stable monitoring is guaranteed, and pressure measurement reliability and operation safety are improved.

The invention relates to a pressure control method and system and a storage medium. The method comprises the steps that the monitored current angle of a butterfly valve and the monitored current pressure of a process cavity are obtained; determining the current air inflow of the process chamber according to the current angle and the current pressure of the butterfly valve; determining the predicted pressure of the process chamber at the next moment according to the current angle of the butterfly valve and the current air inflow; according to the set target pressure, the predicted pressure at the next moment and the current air inflow, the target angle of the butterfly valve is determined; and the operation path of the butterfly valve reaching the target angle of the butterfly valve in the shortest time is planned, and the butterfly valve is controlled according to the operation path so that pressure control over the process cavity can be achieved. The real-time air inflow is automatically estimated, the future pressure is accurately predicted, pressure overshoot is reduced, and the stabilization time is shortened; and the opening switching speed of the butterfly valve is maximized, the target angle is reached as soon as possible within the hardware bearing range, and then the pressure response speed is increased.

The invention discloses an aquifer energy storage dynamic pressure regulation and control system and method based on multi-parameter feedback, and relates to the field of pressure regulation and control. Data normalization is ensured through a standardized parameter type set, and high-quality input is provided for a subsequent model; a pressure mapping model trained based on historical data can accurately predict pressure response under an injection-production strategy, and deviation caused by experience dependence is avoided; through partition clustering and mean value calculation, the aquifer with high heterogeneity is converted into a regulation and control unit with uniform characteristics, and the pertinence of an injection-production strategy is remarkably improved; through dynamic adjustment of a pressure interval, the energy storage efficiency reduction caused by an overpressure risk or underpressure is effectively prevented; an introduced physical intervention mechanism breaks through the limitation of pure data optimization, and the hydrogeological condition is directly improved when model adjustment is invalid; the three purposes of stabilizing the pressure of the aquifer, improving the energy storage efficiency and preventing and controlling geological risks are achieved, and scientific support is provided for long-term sustainable energy storage operation.

The invention relates to the technical field of drilling parameter optimization control, and provides a petroleum drilling parameter optimization method and system and a storage medium. Comprising the steps that torque fluctuation amplitude and bit pressure response delay data are collected in real time, an original data sequence is constructed, and parameter trend data are obtained; analyzing the parameter trend data to identify a stratum change mode, extracting trend feature information, and when the trend feature information meets a preset condition, determining a corresponding abnormal mode identifier; generating a parameter adjustment direction of drilling control according to the abnormal mode identifier, and optimizing the parameter adjustment direction in combination with parameter weight analysis and a real-time feedback mechanism to obtain final optimization guidance data for guiding drilling operation; and mapping the final optimization guidance data to a control interface, and generating a dynamic adjustment instruction for drilling operation. The problems that in the existing petroleum drilling process, parameter adjustment lags behind, and stratum changes are difficult to adapt are solved, and intelligent optimization and dynamic control over drilling parameters are achieved.

The invention relates to the field of homogenizer intelligence, and discloses a homogenizer intelligent pressure increasing and reducing control system based on servo synchronous transmission, which comprises the following steps: extracting the operation inertia difference of each plunger mechanism under a multi-pump parallel structure, generating a synchronous offset vector map, and calculating the pressure increasing and reducing of the homogenizer based on the synchronous offset vector map. Calling a slip registration algorithm and an inertia field decoupling network, extracting reconstructed plunger stroke and pressure response mapping data, constructing a three-dimensional flow-path-stress tensor model, judging whether fluctuation-wear coupling sensitive points exist or not, activating a frequency conversion regulation and control strategy set of a servo driving layer based on a disturbance window and the coupling sensitive points, and carrying out the control of the servo driving layer. And judging whether structural thermal drift feedback unbalance exists or not, dynamically adjusting servo redundancy and a buffer response strategy in combination with a preset life curve and an abnormal response backtracking channel, and outputting a synchronous regulation and control instruction set. The method has the advantage of improving the long-term operation reliability of the homogenizer.

The invention relates to the technical field of automatic control of drilling parameters, in particular to a coal bed gas underground drilling construction parameter optimization method and system.The method comprises the following steps that sound wave response signals are obtained, propagation characteristics are calculated, bit pressure data are aligned, abnormal fluctuation is recognized, pumping pressure information is extracted, and the change trend is analyzed; and comparing the consistency of the regulation and control points and organizing regulation and control actions to finally form a coal-bed gas well drilling parameter optimization control flow. According to the method, accurate calibration of an abnormal state is achieved by constructing a sound wave propagation delay sequence and synchronizing bit pressure response, key regulation and control fragments are recognized in combination with a pumping pressure change trend, a time sequence coupling relation between bit pressure and pumping pressure is established, regulation and control action combinations meeting response consistency are extracted, and sequential organization is conducted; a control instruction set with continuity and pertinence is formed, collaborative recognition and linkage regulation and control of multi-parameter change trends are achieved, and stability and response coordination in the construction process are improved.

The invention relates to the technical field of water supply control, and discloses an intelligent quality-based pressure-superposed non-negative pressure water supply control system and method, and the system comprises a data collection control module, a volume identification module, a water age observation module, a mixing decision module, and an impedance verification module. The effective volume parameters of the steady flow compensation tank are inversed through the pressure response characteristics of the variable frequency booster pump set in the starting stage; dynamically calculating the hydraulic retention time in the tank based on the system flow and the effective volume; when the residence time exceeds a safety threshold value, a forced mixing strategy is generated, and municipal inlet water is driven to be mixed with residence water by adjusting the opening degree of a bypass electric adjusting valve and controlling a pump set to operate; and meanwhile, verifying the effectiveness of the mechanical action of the valve according to the deviation between the real-time power and the theoretical reference power of the pump set after the regulation instruction is issued. Volume parameters can be corrected in real time, aged water is actively replaced under the low-flow working condition, closed-loop verification is carried out on faults of an executing mechanism, and the water supply quality and the system reliability are guaranteed.

The invention relates to the field of intelligent water affairs, and discloses a precise flow control system for intelligent water affairs, which comprises the steps of collecting local water flow change data in real time, extracting flow velocity disturbance characteristics and pipe network transient pressure response, and judging whether unexpected disturbance trigger exists or not; constructing a local disturbance label library based on disturbance trigger source features and a historical operation model, and identifying disturbance sources and flow direction tendentiousness by using fuzzy discrimination and variable weight filtering algorithms; according to the pipe section hydraulic characteristics corresponding to the mismatching behavior, the flow of the target pipe section is corrected through a high-resolution electric proportional valve set and a two-way feedback control unit; constructing a cross-section response chain through the intelligent edge control node, and generating a multivariable adjustment gradient according to the multi-period callback simulation data; flow state data and peripheral environment variables before and after the current round of regulation and control intervention are collected, and system model parameters are dynamically corrected through the integrated evolutionary prediction network. The stability of the intelligent water affair system is improved.

The invention discloses a multi-physics field coupling numerical method for simulating wave-ocean current-earthquake-seabed interaction, and relates to the technical field of ocean engineering numerical simulation, and the method comprises the following steps: model construction, load application, coupling solution, and result analysis and application. According to the method, revolutionary simulation of collaborative response of a seabed and a structure in a complex marine environment and multi-physics field high-precision bidirectional coupling of random waves, steady-state ocean currents and seismic excitation are realized by constructing a total-factor coupled high-precision numerical model, the problems of incomplete coupling dimensions and excessive model simplification of a traditional method are solved, and the method has the advantages of being high in practicability and high in reliability. According to the wave-induced seabed liquefaction simulation method, the simulation result and the actual working condition coincidence degree are remarkably improved, the frequency domain transfer function method is introduced to analyze the seabed pore pressure response, the cognitive depth and the prediction precision of the wave-induced seabed liquefaction mechanism are remarkably improved, and in addition, through efficient algorithms such as GPU parallel calculation, self-adaptive grids and frequency domain-time domain mixed solution, the wave-induced seabed liquefaction simulation method has the advantages that the wave-induced seabed liquefaction simulation precision is improved. And the calculation efficiency is greatly improved while the precision is ensured.

The invention relates to the technical field of geological exploration, in particular to a dynamic slurry pressure regulation and control method for large-diameter slurry shield launching of a karst development stratum, which comprises the following steps of: extracting settlement monitoring data to identify a trend reversal section, analyzing attitude and pressure data linkage, identifying a linkage response interval, extracting slurry and tunneling data to judge slurry supply deviation, according to the method, the settlement trend, the pressure and the posture change information are fused, the linkage relation between the posture and the pressure is established, the abnormal section is recognized in combination with the deviation of the ratio of the slurry supply to the surrounding rock exposure volume, and the adjustment value is generated according to the pressure change trend. Dynamic pressure regulation and control are achieved, the pressure can be actively corrected at the initial stage of settlement change, it is ensured that slurry supply and stratum supporting are coordinated, stratum instability and posture deviation are restrained, the timeliness and adaptability of pressure response at the starting stage are improved, and shield tunneling safety and stratum stability are guaranteed.

The application discloses a thermal mass flow controller with pressure compensation and a control method. The thermal mass flow controller comprises a main passage assembly, a monitoring assembly, a flow limiting assembly and a control assembly. The main passage assembly comprises a shunt passage communicated with the monitoring assembly and a flow limiting passage connected with the flow limiting assembly. The control assembly is electrically connected with the monitoring assembly and the flow limiting assembly. The monitoring assembly further comprises a pressure sensor. The pressure sensor is installed at an air inlet of the shunt passage. The pressure sensor is used for acquiring a pressure value of the shunt passage and transmitting the pressure value to the control assembly. The present application solves the problems that the existing equipment cannot control the flow due to the influence of pressure fluctuation and the problems that the flow overshoot or lag easily occurs due to the lack of a rapid pressure response mechanism.

The invention discloses a wind tunnel model surface pressure measuring system and method based on a double-layer PSP, and belongs to the technical field of aerodynamic wind tunnel test detection. The microsecond pulsating pressure field and the microsecond pulsating temperature field can be measured at the same time on the premise that microsecond pressure response time is kept. A double-layer PSP coating is sprayed on the surface of a test model, mark points are arranged on the double-layer PSP coating, a first lens and a first optical filter are sequentially installed on a first high-speed camera, and a second lens and a second optical filter are sequentially installed on a second high-speed camera; the first high-speed camera and the second high-speed camera are respectively connected with a synchronizer, and the synchronizer is connected with a computer; laser emitted by the excitation light source is irradiated on the double-layer PSP coating to obtain fluorescence for exciting the double-layer PSP coating. According to the invention, the correction of microsecond pulsating pressure errors caused by non-uniform temperature in the process of measuring the surface pressure of the wind tunnel model is realized.

The application discloses a kind of mine roadway surrounding rock fissure rock mass bearing capacity detection equipment with drilling, and the application relates to the technical field of coal mine drilling survey, including drill rod, one end of the drill rod is provided with comprehensive drilling bit, water inlet pipe is arranged in the drill rod, and the water inlet pipe is used to supply water to the inside of comprehensive drilling bit, the inside of the drill rod is also provided with detection mechanism, the detection mechanism includes: pressure storage tank, one side of the pressure storage tank is fixedly connected with first connecting pipe, the first connecting pipe is fixedly connected with the output end of water pump at the end away from the pressure storage tank, the present application is provided with pressure detection module, flow rate detection module and high-frequency dynamic pressure sensing module, and combined with multi-parameter synchronous acquisition and coupling analysis, the pressure decay characteristic, flow change characteristic and transient pressure response characteristic can be obtained simultaneously, so as to construct surrounding rock fissure equivalent permeation response parameter, with the advantages of realizing the continuous acquisition of surrounding rock fissure permeation characteristic and its spatial distribution.

The invention discloses an underwater profile water sample automatic collection device capable of setting trigger pressure, and relates to the technical field of underwater sampling. The sampler comprises a sampling mechanism and a driving mechanism. The sampling mechanism comprises a sampling barrel, a one-way valve and a piston type water pumping assembly with a piston and a spring; a water inlet is formed in the upper end of the sampling cylinder. The driving mechanism is mainly a transmission assembly, and the transmission assembly is specifically composed of a plug pin, a rotating shaft, a transmission gear, a driving cam, a pressure response air cylinder and the like. A piston rod in the pressure response air cylinder moves under the action of water pressure, a transmission gear is driven to rotate through a rack, a driving cam coaxially arranged with the transmission gear rotates along with the transmission gear and pushes a limiting device on a plug pin, limiting of the plug pin to a piston in the water pumping assembly is relieved, and the sampling barrel starts to collect water immediately. Automatic and reliable opening and closing are achieved through mechanical self-locking and spring energy storage, and the sampling fidelity is high; by setting the relative positions of the driving cam and the rotating shaft, a user can preset the closing triggering depth according to operation requirements; and meanwhile, by configuring a plurality of trigger nodes, the grading response and closing functions of the device under different water layer depths are realized, the sampling flexibility and the adaptability to different water layer environments are improved, and the operation requirements of diversified section sampling can be accurately met.

The invention discloses a while-drilling pressure measurement fluidity correction method under a multi-factor interaction effect, and the method comprises the steps: constructing a while-drilling pressure measurement numerical simulation model of an anisotropic stratum inclined shaft, and deducing the model as a while-drilling pressure measurement finite element model of the stratum inclined shaft; performing stratum fluidity inversion analysis on the stratum inclined shaft pressure measurement while drilling finite element model, and identifying key factors influencing the logging pressure measurement while drilling fluidity based on an analysis result; carrying out numerical simulation on the basis of the identified key factors to obtain a pressure response result of the pressure measurement while drilling, analyzing formation fluidity characteristics under the interaction of the multiple factors, and further determining a fluidity response rule expression of the pressure measurement while drilling under the interaction of the multiple factors; and substituting key factor values in the actual measurement while drilling pressure measurement process into the corresponding while drilling pressure measurement fluidity response rule expression, and further calculating to obtain the while drilling pressure measurement fluidity of the vertical well, thereby realizing the correction of the while drilling pressure measurement fluidity. The method provided by the invention provides a theoretical basis and a technical support for the use of the pressure measuring instrument while drilling.

The invention discloses an intelligent control method and system for massage equipment based on rhythm information, and relates to the technical field of voice recognition processing. The massage equipment is intelligently controlled through rhythm information, synchronous matching of music rhythm, user respiration and voice signals is achieved, massage actions are more natural and harmonious, and comfort and immersion can be remarkably improved; meanwhile, space positioning and pressure response adjustment are combined, the accuracy and individuation of massage parts and force are guaranteed, and the equipment can dynamically adjust a control strategy according to the state of a user.

The invention relates to the technical field of composite material manufacturing, and discloses a light-weight carbon fiber plate vacuum infusion forming method which comprises matrix resin, a curing agent, a controllable phase change self-expanding pressing agent and a pressure response type gel triggering agent. The intelligent resin system is pre-arranged on a fiber pre-forming body and is sealed and vacuumized to form a sealed cavity, and then the controllable phase change self-expanding pressing agent is subjected to phase change gas production at a preset triggering temperature through programmed temperature rise, so that internal micro-positive pressure is formed in the cavity. The internal micro-positive pressure drives the resin to infiltrate the fibers, and activates the pressure response type gel triggering agent to initiate gel curing, and then high-temperature curing is completed. According to the method, through internal micro-positive pressure generated in situ, self-expanding, complete and uniform infiltration of the resin on fibers is achieved, the compaction effect can be continuously applied in the curing stage, the internal porosity and dry spot defects of a workpiece are remarkably reduced, and the mechanical property and the internal quality of a composite material plate are improved.

The present application relates to a kind of coal mine emulsion pump intelligent pressure control method.The technical problems to be solved by the present application are to provide a kind of coal mine emulsion pump intelligent pressure control method.The technical scheme adopted by the present application comprises the following steps: setting pressure sensor at the outlet of emulsion pump, real-time acquisition emulsion pump outlet pressure data;The pressure data is uploaded to cloud server by communication module, and cloud server is used to store and analyze historical pressure data;Based on the historical pressure data and in combination with the characteristics of mine load working condition, an emulsion pump outlet pressure prediction model is constructed in the cloud, which is used to predict the emulsion pump outlet pressure at future time.The present application has the advantages of: having predictive control capability, significantly improving response speed, compared with traditional PID control, pressure response delay is reduced by about 42%, effectively improving the dynamic response speed of emulsion pump;Adaptive algorithm is used to optimize PID control, and control precision and stability are enhanced.

The utility model discloses a pressure gauge and a thermomanometer with a sand prevention function, which comprise a gauge body, the gauge body is provided with a pipeline plug, the free end of the pipeline plug is provided with a pressure sensor, and the pressure sensing end of the pressure sensor is arranged on the end face of the free end of the pipeline plug. The free end of the pipeline plug is further provided with an anti-impact mesh, a gap is reserved between the anti-impact mesh and the end face of the free end of the pipeline plug, and the edge of the anti-impact mesh is fixedly connected with the free end of the pipeline plug. The pressure sensor has the remarkable effects that the anti-impact mesh arranged outside the pressure sensing end of the pressure sensor can block and isolate rock debris and gravel with certain sizes, so that the rock debris and gravel with larger volume (mass) are prevented from directly impacting the pressure sensing end of the pressure sensor, and the blocking and isolating effects have the effect of reducing pressure numerical value fluctuation. And the obvious effect of delaying or avoiding the damage of the pressure sensor is achieved.

The invention discloses an intelligent control method and system for the running state of an energy-saving water pump motor, relates to the technical field of water pump motor control, and aims to solve the problem that preset parameters of a control system are mismatched with actual working conditions due to changes of internal and external physical conditions of the system in modern industrial and municipal water supply systems. The method comprises the steps that pressure response data of a water pump in the operation process are obtained, at least one operation performance index is determined according to the pressure response data, and whether current closed-loop adjustment parameters of a water pump control system are mismatched with the actual hydraulic working condition of the water pump or not is judged according to the at least one operation performance index and a preset ideal operation performance range; when it is judged that mismatch exists, according to a preset parameter adjusting rule, gradual fine adjustment is conducted on the closed-loop adjusting parameters, and the parameter adjusting rule covers the adjusting direction and the adjusting amplitude corresponding to the closed-loop adjusting parameters when different operation performance indexes deviate from the ideal operation performance range.

This invention relates to a rapid, automatic response urine drainage device and a dedicated drainage material. The leak-proof outer shell 20 of the dedicated drainage material is equipped with an automatic trigger switch that automatically senses the patient's urination status and quickly initiates negative pressure suction. Upon completion of urination, the automatic trigger switch disconnects, and the urine drainage device 10 returns to standby or sleep mode. This technical solution not only results in lower-cost and more widely available nursing consumables, but also offers high sensitivity in urination status monitoring with an extremely low probability of distortion or false triggering. The fast negative pressure response time avoids urine leakage problems caused by delayed urine sensing or delayed negative pressure activation after urination.

The invention discloses portable infusion equipment with an early warning function and a monitoring system. The equipment comprises an openable fixing ring, an eccentric wheel / cam extrusion adjusting assembly, a disposable LC resonance sensing short pipe section, a reading coil, a processing unit and a normally closed emergency pinch-off mechanism. The fixing ring sleeves and clamps the infusion hose, and the motor drives the extrusion part to continuously change the through-flow section of the hose; the reading coil and the disposable LC sensor are in non-contact coupling frequency sweeping to read resonance characteristics, the processing unit converts the resonance characteristics into pressure / flow and carries out closed-loop control, and in-place identification and automatic calibration are achieved. The system integrates bubble detection, blockage judgment and slow release strategy and dual-channel flow consistency calibration; and extravasation early warning can be realized through micro pinch-off pulse and pressure response fitting, and the reliability is improved in cooperation with skin patch signal fusion. The device is linked with a mobile terminal and a cloud platform through a wireless module to realize remote monitoring and alarm pushing.

The utility model relates to the technical field of massage knapsacks, in particular to a pressure sensing massage knapsack which is characterized by comprising a knapsack body, a massage control system, a first massage vibrator and a power supply, the massage control system, the first massage vibrator and the power supply are arranged on the knapsack body, and the massage control system comprises a PCB (printed circuit board) and a function control panel. The function control panel, the first massage vibrator and the power supply are all electrically connected with the PCB, the first massage vibrator is a pressure sensing massage vibrator, and the pressure sensing massage vibrator is used for detecting the pressure borne by the corresponding part of the human body in real time and feeding back a pressure signal to the massage control system; and the massage control system adjusts the massage intensity of the pressure sensing massage vibrator in real time according to the received pressure signal. The pressure sensing massage device has a pressure sensing massage function, can detect the weight bearing pressure of a user in real time, can automatically adjust the massage strength according to the weight bearing pressure under the control of the massage control system, and can meet the use requirements of personalized services for the user.

The utility model discloses an automatic luggage compartment door anti-pinch air bag which comprises an automatic luggage compartment door, an air pipe, an air bag installation section bar and an air bag rubber strip, the air bag installation section bar is arranged at the bottom of the automatic luggage compartment door, and the air bag rubber strip is installed in a bottom clamping groove of the air bag installation section bar. An air bag front plug and an air bag rear plug are arranged at the two ends of an air cavity in the air bag rubber strip respectively, one end of the air pipe penetrates through the air bag front plug to be arranged in the air cavity, and the other end of the air pipe penetrates through the automatic luggage compartment door and the air bag installation profile to be connected with the air pressure induction controller. Signals are given to the electromagnetic valve through the air pressure sensing controller, and the electromagnetic valve is reversed to prevent the cabin door from being closed continuously, so that passengers are prevented from being pinched or articles are prevented from being damaged.

The invention relates to the technical field of semiconductor manufacturing, and discloses a wafer polishing treatment system based on pressure regulation and control, which comprises a partition pressure regulation and control module, a micro-disturbance excitation injection module, an interface rheological state analysis module and a dynamic hysteresis inversion control module. The dynamic viscoelastic modulus is calculated in real time, an inverse dynamic model is constructed according to the dynamic viscoelastic modulus to generate an advanced compensation component aiming at the viscoelastic hysteresis effect, the transient ballistic overshoot phenomenon is effectively restrained through the strain rate hardening and hysteresis characteristics of the active hedging polishing pad under high-speed pressure switching, and therefore the transient ballistic overshoot phenomenon is effectively restrained. The problems of over-polishing and defects caused by pressure response dislocation are solved, and the wafer planarization quality under the advanced manufacturing process is improved.

The invention relates to a method for modeling and calibrating a dynamic model of a thruster with a hysteresis link. The method comprises the following steps of: constructing a model comprising parameters such as steady-state thrust, starting time, hysteresis time, rising time, stabilizing time, falling time and ending time; a thruster dynamic response test run system is built, control signal, electromagnetic valve current, thruster combustion pressure and thruster thrust test equipment is arranged, a control signal curve, an electromagnetic valve current curve, a combustion pressure response curve and a thrust response curve in the working process of a thruster are tested, a time coordinate axis is unified, a dynamic model curve is drawn, and the thruster dynamic response test run is obtained. And dynamic model parameters including steady state thrust, starting time, delay time, rise time, stable time, fall time, termination time, valve opening time, valve closing time and the like are calculated. Through the model and the method, the dynamic parameters of the thruster with the hysteresis link can be calibrated.

The application provides a vacuum mixing process optimization method and system, which comprises collecting mixing container cavity pressure, jacket temperature, material torque, stirring speed, and air extraction flow signal, calculating pressure change rate, torque fluctuation amplitude, air extraction amount per unit time, and pressure fluctuation characteristic quantity, dividing the vacuum mixing process into four stages of initial exhaust, bubble release, viscosity climb, and densification stability; in the initial exhaust section, the vacuum valve opening degree and time length are controlled according to the air extraction amount and the pressure change rate, and the pressure response delay is recorded; in the bubble release section, an air extraction and stop alternating sequence is generated, and the air extraction and stop time length is corrected in combination with the delay; in the viscosity climb section, the target pressure interval is determined according to the torque, temperature, and pressure change rate, and the speed and valve opening degree are cooperatively adjusted to stabilize the pressure; in the densification stability section, a stability criterion is constructed, and the valve opening degree is controlled as needed; when adjacent stages are switched, the target pressure starting point, valve opening degree initial value, speed initial value, and control period of the next stage are corrected according to the end parameters of the previous stage.

The application relates to the technical field of dam body leakage detection, in particular to a reservoir dam body early leakage detection method, equipment and system, the method comprising the following steps: obtaining synchronous aligned reservoir water level and pore water pressure, extracting pressure response time lag and pressure response amplitude ratio under a dominant frequency by using frequency domain analysis, constructing a hydraulic retardation modulus representing medium properties, calculating the shortest seepage path length from each measuring point to the reservoir water boundary according to a dam geometric structure model and constructing a spatial adjacency distance matrix, performing linear trend fitting on the pressure response time lag and the seepage path length to generate data reliability weights, calculating the distribution recovery cost required for transforming the measured retardation distribution vector into a reference path distribution vector, and performing trend monitoring on the distribution recovery cost at continuous multiple time points to determine abnormalities. The application aims to extract the medium property change characteristics caused by early small reservoir dam body leakage, and realize spatial positioning of the leakage source position.

The embodiment of the application discloses a formation mobility correction method and device for anisotropic formation deviated well. The method comprises the following steps: acquiring the deviation angle, tool face angle, probe seat sealing azimuth angle and pressure response data of the target deviated well at the target depth; calculating the target shape factor according to the deviation angle, tool face angle, probe seat sealing azimuth angle and shape factor function; calculating the permeability ratio of the horizontal direction and the vertical direction of the formation at the target depth; acquiring the correction function generated in advance based on the deviated well apparent mobility model, permeability model and straight well standard mobility model; and calculating the target correction mobility of the target depth according to the correction function, target shape factor, permeability ratio, deviation angle, tool face angle, probe seat sealing azimuth angle and pressure response data. The scheme can correct the mobility of the anisotropic formation deviated well to the straight well standard, and provides the same evaluation standard for evaluating the formation mobility. Moreover, the correction precision and speed of the scheme are high.