66 results about "Pressure controlled method" patented technology

The invention discloses a brake-by-wire booster pressure control method, electronic equipment and a vehicle, and belongs to the technical field of vehicles. The method comprises the following steps: determining the braking demand pressure of a driver according to a pedal travel sensor signal, a driving mode signal and a current vehicle speed; determining an external brake demand pressure according to the external brake request signal; determining comfortable parking brake pressure according to the current vehicle speed and the current deceleration; brake pressure needed by the ramp is determined according to the gradient sensor signal and the wheel speed sensor signal; acquiring an anti-lock control pressure; determining a braking mode according to the current vehicle speed; and brake pressure output is determined according to the brake demand pressure of the driver, the external brake demand pressure, the comfortable parking brake pressure, the brake pressure needed by the ramp, the anti-lock control pressure and the brake mode. By formulating pressure decision logic and integrating multi-source requests, a coordination mechanism of'maximum value demand and minimum value constraint security 'is proposed for the first time, and system response is ensured to be safe and accurate.

The application discloses a semiconductor device and a chamber pressure control method. The semiconductor device comprises a transfer chamber and at least one process chamber, and a pressure-bearing valve is arranged between the transfer chamber and each process chamber. The process chamber comprises a first vacuum pumping air path. The transfer chamber comprises a second vacuum pumping air path and a gas filling air path, and the gas filling air path comprises a first gas filling mode and a second gas filling mode. The first gas filling mode is used for increasing the pressure of the transfer chamber at a first gas filling rate. The second gas filling mode is used for increasing the pressure of the transfer chamber at a second gas filling rate when the pressure of the transfer chamber is less than or equal to the pressure of the process chamber, until the pressure of the transfer chamber is greater than the pressure of the process chamber, and the pressure difference between the transfer chamber and the process chamber is within a preset range, wherein the second gas filling rate is less than the first gas filling rate. The application can control the pressure of the transfer chamber to be greater than the pressure of the process chamber, and the pressure difference between the two chambers is within a safe difference range.

The application discloses a wafer polishing laser interference closed-loop pressure control method, and relates to the technical field of semiconductor manufacturing, and comprises the following steps: S1: a ceramic plate is triggered to automatically measure a program after being turned over with a wafer; S2: a laser interference measurement head is driven by a six-axis mechanical arm positioning system to non-contact scan T2 / T4 points of the wafer, and thickness distribution data is acquired; S3: a Zernike polynomial is adopted to fit the thickness distribution data to generate a three-dimensional distribution graph, and a pressure correction amount is calculated based on a pressure prediction model constructed by a process kinetics model and a support vector machine regression algorithm; S4: an abnormal processing module is used to detect data outliers in real time, and a device protection strategy is triggered when a deviation exceeds a set threshold; and S5: a pressure control instruction is transmitted to a polishing head by a PLC controller through a PROFINET bus. By means of non-contact laser interference measurement, the laser interference technology is applied to wafer thickness detection after polishing for the first time, and single measurement time is less than 20 seconds, so that the detection efficiency is significantly improved.

This application relates to a continuous positive airway pressure (CPAP) device and a method for controlling ventilation pressure. The minimum operating pressure is determined by acquiring a preset treatment pressure and a target pressure drop. The device monitors the patient's respiratory phase transitions in real time and employs different pressure regulation strategies for the inspiratory and expiratory phases. During the inspiratory phase, the ventilation pressure is smoothly adjusted from the preset treatment pressure to the minimum operating pressure and maintained to reduce inspiratory effort. During the expiratory phase, the ventilation pressure is gradually increased from the minimum operating pressure to ensure that the ventilation pressure returns to the preset treatment pressure at the end of the expiratory phase, maintaining airway support and avoiding the risks of airway closure and central apnea. This application improves patient comfort during CPAP therapy, enhances treatment compliance, and simultaneously ensures airway support while reducing the risks of airway closure and central apnea.

A pressure control method and a pressure stabilizing control system. The method comprises: acquiring a pressure measurement value and a pressure setting value of a pressurizer (101); determining a pressure deviation value on the basis of the pressure measurement value and the pressure setting value (102); if the absolute value of the pressure deviation value is less than or equal to a first preset value, regulating the charging flow and the letdown flow of a circuit on the basis of the pressure deviation value and the pressure measurement value, so as to control the pressure of the pressurizer (103); and if the absolute value of the pressure deviation value is greater than the first preset value, on the basis of the pressure deviation value, controlling the pressurizer to inflate or deflate so as to control the pressure of the pressurizer (104). The method and the system can improve the pressure stabilizing effects of pressure stabilizing control systems.

The application discloses a kind of full electric injection molding machine cylinder pressure control method, with PI control parameter acquisition stage, single P control stage and PI control stage, in PI control parameter acquisition stage, the actual pressure of cylinder is periodically obtained, the pressure variation of cylinder is obtained, the proportional term K p And integral term T i Two PI control parameters, in single P control stage, the proportional term of PI control parameter acquisition stage is used to control the deceleration process of injection, in PI pressure control stage, the integral term of PI control parameter acquisition stage is introduced to eliminate static deviation, so that the injection pressure is stable to set pressure, PI control parameter self-learning is replaced by manual to adjust cylinder pressure, and automatic PI control parameter setting control is realized;The advantage is not only time-saving and labor-saving, but also will not affect the normal use of full electric injection molding machine, and the working efficiency of full electric injection molding machine can be guaranteed.

The application discloses a pressure control method and a control method of a drilling machine. The pressure control method is used for adjusting a pressure value of a pneumatic system. The pneumatic system comprises an air compressor, an air tank, an air inlet valve, an air outlet valve, a flow sensor, a pressure sensor, a control console and a controller. The pressure control method comprises the following steps: the controller acquires the pressure value collected by the pressure sensor; the controller judges whether the pressure value collected by the pressure sensor is greater than a set pressure threshold value, and if yes, sends a pressure reduction control instruction to at least one of the air compressor, the air inlet valve and the air outlet valve; and at least one of the air compressor, the air inlet valve and the air outlet valve performs a pressure reduction action according to the pressure reduction control instruction. The application has the beneficial effect of providing a pressure control method for improving the pressure value of a pneumatic system and a control method of a drilling machine.

The application provides a mixed type pressure control method and device for a multi-section gas collecting pipe coke oven and electronic equipment. The method comprises the following steps: obtaining a coke oven production stage signal, real-time gas collecting pipe pressure and a turning plate opening degree data, setting a single section pressure steady state value in stages, compensating a non-single section pressure on demand, dynamically generating a corresponding turning plate adjustment parameter and executing adjustment, realizing stable control of the multi-section gas collecting pipe pressure under the mixed type process, effectively solving the problems of uneven suction force distribution and unstable adjustment caused by the steady state difference of different sections, reducing the phenomenon of smoke and fire on the oven top, and providing protection for environmental protection, extension of the service life of the coke oven, improvement of the coke quality, improvement of the chemical production recovery rate and safety production.

The embodiment of the present application discloses a condensing pressure control method and device of an environmental test chamber and the environmental test chamber. The environmental test chamber comprises a chamber body, a control system, a refrigeration system and a water circuit system. The refrigeration system is located in the interior of the chamber body. The control system comprises a controller and a temperature sensor. The refrigeration system comprises a compressor, a condenser, an evaporator and a throttling element. The water circuit system comprises an electric ball valve, a water outlet pipeline and a water inlet pipeline. The condensing pressure control method is executed by the controller. The condensing pressure control method comprises the following steps: obtaining the real-time water inlet temperature, the real-time water outlet temperature and the real-time liquid outlet temperature of the condenser; determining the water side temperature difference and the refrigerant temperature difference of the condenser according to the real-time water inlet temperature, the real-time water outlet temperature and the real-time liquid outlet temperature; and controlling the opening degree of the electric ball valve according to the water side temperature difference and the refrigerant temperature difference, so as to control the condensing pressure of the environmental test chamber. The technical scheme of the environmental test chamber provided by the embodiment of the present application can guarantee the control reliability.

This invention relates to the field of air conditioning technology, specifically providing a system high-pressure control method and a water-cooled multi-split air conditioning unit, aiming to solve the problem that existing water-cooled multi-split air conditioning unit high-pressure regulation methods affect system energy efficiency and reliability. To this end, this application provides a system high-pressure control method and a water-cooled multi-split air conditioning unit. The unit is equipped with a booster pipe and / or a depressurization pipe. The two ends of the booster pipe are connected to the compressor's exhaust port and the first port of the indoor heat exchanger, respectively. The two ends of the depressurization pipe are connected to the first port of the indoor heat exchanger and the compressor's suction port, respectively. The method includes: acquiring the system high-pressure; comparing the system high-pressure with the warning pressure threshold corresponding to the current operating mode; and controlling the connection of the corresponding pipes based on the comparison result. Through the above setup, the system high-pressure can be adjusted by controlling the connection of the corresponding pipes, reducing or avoiding compressor frequency adjustments, while ensuring system energy efficiency and reliability.

This invention provides an adaptive pressure control method and control system for a machine tool hydraulic clamping system, relating to the field of machine tool hydraulic control technology. The method includes: real-time acquisition of the pressure in both chambers of the clamping cylinder, piston rod displacement, and oil temperature; dynamic determination of the target clamping pressure based on the workpiece material and machining conditions; construction of an RBF neural network for online estimation of unmodeled dynamics; solving an improved robust control law using the estimated values ​​to obtain the control quantity; and outputting the control signal to an electro-hydraulic servo valve to achieve real-time adaptive control. This invention, through a composite algorithm of RBF neural network and improved robust control, effectively compensates for the nonlinearity and parameter uncertainties of the hydraulic system, achieving stable and reliable control of the clamping pressure and preventing workpiece deformation or loosening.

The present application provides a wing hot air anti-icing control system and an air anti-icing pressure control method. The system comprises a wing anti-icing valve, a wing anti-icing pressure sensor, a wing anti-icing temperature sensor, a wing anti-icing ground temperature monitoring sensor, a wing anti-icing monitoring pressure sensor, a wing anti-icing controller, a bleed air fan valve and a flute type pipe. The wing anti-icing controller comprises independent control channels and monitoring channels, and the wing anti-icing valve comprises independent valve shutdown circuits and valve adjustment circuits. The present application can realize ground and air anti-icing, and the anti-icing is more accurate according to the wing anti-icing pressure sensor than the anti-icing according to the reference upstream bleed air temperature. In the case of single-engine bleed air anti-icing, bleed air failure or performance decline, etc., the anti-icing or maximum anti-icing can still be performed under the condition of ensuring the optimal aircraft. Therefore, the present application can not only effectively reduce energy consumption, improve economy and safety, but also has good anti-icing effect and good universality.

The application discloses a valve cavity air pressure control method and device and related media, the method comprising collecting a multi-dimensional time series data set, and performing data preprocessing on the multi-dimensional time series data set to obtain a feature engineering data set; the feature engineering data set is divided according to working conditions and pressure segments to obtain a two-dimensional model matrix; a model mapping table is established based on the two-dimensional model matrix to obtain a model switching configuration object; the current cavity air pressure is obtained according to the model switching configuration object, and data comparison is performed to obtain a pressure segment identification result; the pressure segment identification result is used to determine a pressure increase / decrease identifier and / or a pressure adjustment identifier, so that a sub-model of the two-dimensional model matrix is selected for reasoning to generate a control instruction. The pressure increase / decrease identifier and / or the pressure adjustment identifier are determined according to the pressure segment identification result obtained by calculation, so that the sub-model of the two-dimensional model matrix is selected for reasoning to generate the control instruction. In this way, the valve cavity air pressure can be stably and accurately controlled in the full pressure range.

The present application relates to the field of new energy and advanced storage technology, and particularly relates to a solid-state battery, a pressure control method of the solid-state battery and a vehicle. The solid-state battery provided by the present application comprises a battery module and a pressure generating device; the two are connected through a pipeline, the battery module is internally provided with a plurality of solid-state battery cells arranged in series and parallel and at intervals, is internally filled with a pressure medium, and the pressure medium wraps and contacts the surface of the battery cell; the pressure generating device drives the flow of the pressure medium based on the pressure information inside the module to apply a preset pressure to the solid-state battery cell. The present application uses a flowable pressure medium to directly contact the battery cell to apply uniform pressure, avoids the problems of fatigue attenuation and uneven pressure of mechanical pressure structures, realizes dynamic pressure regulation, reduces the weight of the module, and saves the space in the package.

The present application relates to a kind of gas well bottom hole flowing pressure control technical fields, is a kind of well bottom hole flowing pressure control method, device, system and electronic equipment for tight sandstone gas reservoir drainage gas production, including obtaining the relevant data of target well, and input to optimal well bottom hole flowing pressure calculation model, obtain corresponding optimal well bottom hole flowing pressure, and obtain corresponding best drainage gas production execution device operating parameter, according to the first time interval continuously receiving actual well bottom hole flowing pressure, according to the comparison result of actual well bottom hole flowing pressure and optimal well bottom hole flowing pressure dynamically adjusts best drainage gas production execution device operating parameter, generates and sends adjustment instruction to drainage gas production execution device.The present application is combined with artificial intelligence, can quickly adapt to the change of gas well production situation, dynamically adjusts best drainage gas production execution device operating parameter, controls well bottom hole flowing pressure in optimal range, improves the drainage gas production intelligent control degree of well bottom hole flowing pressure, reduces artificial dependence, reduces human operation error.

Provided are a pressure control system and a pressure control method with which it is possible to automatically adjust supply pressure of washing water without requiring a cumbersome work for adjusting and setting a target pressure value. A pressure control system of an automatic analyzer 100 comprises: probes 6, 7 that dispense liquid into liquid containers 5, 24; a first pump 2 that supplies washing water to the probes 6, 7 via flow paths 17-20; a second pump 3 that is provided between flow paths 17, 18 connecting the first pump 2 and the probes 6, 7 and supplies the washing water supplied from the first pump 2 to the probes 6, 7; a pressure sensor 21 that is provided in the flow paths 18-20 between the second pump 3 and the probes 6, 7 and measures the pressure in the flow paths 18-20; and an adjustment unit 11 that adjusts at least discharge pressure of the first pump 2 on the basis of the value of the pressure measured by the pressure sensor 21.

This invention discloses a boost pressure control method, which includes four stages: a self-learning inactive stage, a self-learning stabilization stage, a self-learning activation stage, and a self-learning update stage. In the self-learning update stage, based on the average actual boost pressure before and after filtering, the average throttle inlet pressure before and after filtering, the average of the minimum actual boost pressure before filtering, or the average of the maximum actual boost pressure before filtering, a self-learning update coefficient for the minimum or maximum boost pressure is calculated and updated to the corresponding operating condition. The corresponding operating condition refers to engine speed, load, intake air temperature, coolant temperature, target intake pressure, atmospheric pressure, and target boost pressure fluctuations all not exceeding a preset range and their average values ​​being the same. Finally, the minimum or maximum boost pressure of the current operating condition is updated based on the self-learning update coefficient. This invention can perform self-learning of boost pressure, including minimum and maximum boost pressure.

This application provides an isostatic pressure control method, a clamping system, and a battery for solid-state batteries. The method includes: assembling a rigid pressure plate, a gradient buffer layer, and a battery cell into a clamping fixture; and applying a preload of 10~100 N / cm to the clamping fixture using a preload application device. 2 The process involves: applying a pre-tightening force; applying an additional pressure of 100-200 MPa to the clamping fixture via a pressure control system; applying an additional pressure of 200-500 MPa to the clamping fixture via a pressure control system; and depressurizing the clamping fixture to atmospheric pressure at a rate of ≤5 MPa / s via a pressure control system. The gradient buffer layer structure effectively absorbs and uniformly disperses stress, reducing the electrode material fracture rate. The pre-tightening process avoids the formation of unevenly dense internal regions; and the slow depressurization process avoids interface debonding caused by stress rebound. These processes work synergistically to improve battery cycle capacity retention and product yield.

This invention discloses a method and system for controlling the output pressure of a ventilator. The method includes: acquiring and determining, based on respiratory signals within a unit sampling period, that an obstructive sleep apnea event has occurred within the unit sampling period; calculating, using fuzzy inference, a sleep state corresponding to the unit sampling period based on the respiratory signals; determining a ventilator output pressure compensation amount corresponding to the sleep state based on the obstructive sleep apnea event and the sleep state; and adjusting and controlling the corresponding ventilator pressure output based on the ventilator output pressure compensation amount. This method can dynamically adjust the ventilator output pressure for different sleep states, adjust and control the corresponding ventilator pressure output in real time, has strong adaptability, and can improve more personalized and precise ventilator pressure adjustment, fully utilize the support role of the ventilator, and achieve automated analysis and intelligence of the ventilator control system.

This invention provides a method for controlling the pressure of a jet grouting body. The steps include: determining the top elevation H of the jet grouting pile and the pressure control height L; introducing the grout outlet pipe of the grout stop plug into a temporary grout storage container with an elevation greater than L+H, and the outlet elevation of the grout outlet pipe being L+H; setting a waste grout discharge pipe at the bottom of the temporary grout storage container to discharge waste grout into the waste grout container; and adjusting the pressure control height L to prevent the effective grout within the consolidation range from flowing out during jet grouting. This invention cleverly solves the problem of grout outflow during upward inclined jet grouting, enabling the application of jet grouting technology to both horizontal and upward jet grouting operations. It is particularly important for the consolidation of fractured rock masses and soil layers in tunnels and other special situations, greatly expanding the application range of jet grouting technology. More importantly, it can stably and accurately control and adjust the jet grouting body pressure. This invention has strong controllability, low risk, is easy to implement, has low implementation cost, and produces high-quality jet grouting structures after implementation.

This invention relates to the field of fluid pressure control technology, and more particularly to an adaptive PID pressure control method for an aviation fuel synthesis unit. The method includes: acquiring real-time operating data of the reactor system; calculating the reaction thermal shock factor; calculating a pressure control sensitivity coefficient, and then correcting the basic proportional gain based on the pressure control sensitivity coefficient to obtain the dynamic proportional gain at the current moment; substituting the dynamic proportional gain into the PID control algorithm to calculate the valve control quantity, and adjusting the opening of the hydrogen supplementation regulating valve according to the valve control quantity to maintain reactor pressure stability. The technical solution of this invention can solve problems such as pressure regulation lag caused by thermo-pressure coupling in high-pressure hydrogenation reactors under complex operating conditions, and system oscillations and unplanned shutdowns caused by the inability of fixed-parameter PID control to adapt to changes in the dynamic response model.

A method for downforce control includes receiving vehicle inputs. The method includes determining a first normal-force request at the front axle and a second normal-force request at the rear axle using the plurality of vehicle inputs and a prediction model. The prediction model is a combined state space model that integrates a half-car state space model and an actuator state space model, the half-car state space model is developed using a half-car model, and the actuator state space model is developed using a neural network model. The method further includes determining a first position of the first aerodynamic body relative to the vehicle body and a second position of the second aerodynamic body relative to the vehicle body based on the first normal-force request and the second normal-force request, respectively.

This invention discloses a method and system for controlling the pressure of stacked iron cores to reduce transformer no-load losses. The method includes acquiring the excitation current signal of the stacked iron cores under constant-voltage sinusoidal excitation conditions; extracting the harmonic characteristic components of the signal and decoupling them into stress characterization indicators and air gap characterization indicators, calculating the corresponding hysteresis loss components and air gap additional loss components; gradually increasing the clamping force under a monotonically increasing pressure application path, determining the total loss gradient based on the components at each pressure step, and locating the first optimal pressure point; acquiring pre-configured compensation parameters, performing offset compensation calculations on the first optimal pressure point, obtaining the target curing pressure, and locking it. This invention, through electrical harmonic analysis, can solve the deviations caused by magnetic coupling hysteresis and process relaxation, achieving optimized control of no-load losses.

A braking pressure control method for new energy vehicles based on the Koopman operator includes: establishing the dynamic equilibrium equations and nonlinear model of the braking system; constructing an observation function set, identifying the Koopman operator matrix using an extended dynamic mode decomposition algorithm, constructing a global linear prediction model, and correcting the Koopman operator matrix; constructing an augmented state equation in the discrete-time domain, designing a linear extended state observer based on an improved Kalman filter algorithm, and outputting a lumped disturbance estimate; injecting the lumped disturbance estimate into the prediction equation of the linear model predictive control, and obtaining the optimal control sequence by solving the objective function of a quadratic programming problem; converting the first control increment of the optimal control sequence into a motor drive signal, which is applied to the master cylinder motor of the electro-hydraulic braking system for physical pressure build-up. This invention can solve the problems of low hydraulic pressure control accuracy, poor anti-interference ability, and high computational load in existing technologies.

This invention belongs to the field of mud treatment and disposal technology, and discloses a pressurization control method and apparatus for a deep dewatering process of mud. The method includes: after the mud is fed into the dewatering chamber, applying a first pressure P1 using a pressurizing device to perform a first-stage solid-liquid separation; determining the end time of the first-stage solid-liquid separation based on the water pressure in the dewatering chamber, and proceeding to the second-stage solid-liquid separation; during the second-stage solid-liquid separation, applying a second pressure P2 using the pressurizing device, and determining the mud cake thickness L based on a mathematical model of compression amount and compression time. Tc With the second stage pressurization time T c Relationship curve and / or cake compression L c With dehydration time T c The relationship curve is used to determine the pressurization time for the dewatering target. After the pressurization time in the second stage reaches the pressurization time for the dewatering target, the second stage of solid-liquid separation ends. This solves the problem of difficulty in quantitatively controlling key operating parameters such as pressure change nodes and pressure holding time in current slurry deep dewatering devices.

A semiconductor equipment and a pressure control method are provided. The semiconductor equipment includes a high-pressure processing apparatus and a pressure balancing element. The high-pressure processing apparatus includes an inner chamber and an outer chamber. The inner chamber is configured to accommodate a reaction gas at a first pressure. The outer chamber surrounds the inner chamber and is configured to accommodate an inert gas at a second pressure. The outer chamber is isolated from the inner chamber in the high-pressure processing apparatus. The pressure balancing element is connected to the inner chamber through a first pipe, connected to the outer chamber through a second pipe isolated from the first pipe, and is configured to balance the first pressure and the second pressure when a pressure difference between the first pressure and the second pressure is greater than a predetermined pressure difference.