20878 results about "Electromagnetic valve" patented technology

The invention relates to the technical field of industrial automatic detection, in particular to an intelligent electromagnetic valve fault detection method and system based on multi-parameter analysis, and the method comprises the following steps: S1, synchronously collecting the dynamic current waveform, vibration spectrum information and environment temperature data; s2, extracting a current characteristic value and vibration energy distribution, and calculating a temperature drift amount; s3, the current characteristic value, the vibration energy distribution and the temperature drift amount are input into a multi-parameter incidence matrix, and a coupling deviation coefficient representing the coupling relation between parameters is generated; s4, calculating a comprehensive health index of the electromagnetic valve based on the coupling deviation coefficient; and S5, matching the comprehensive health index with a preset fault feature library, and outputting a corresponding fault type and a positioning result. According to the method, by fusing the multi-source characteristic parameters and introducing the health index evaluation mechanism, accurate recognition and positioning of the electromagnetic valve faults are achieved, and the detection accuracy and the response efficiency are improved.

The invention relates to an ice crystal evaporator and an ice crystal water cooling device producing from the same, belonging to the technical field of refrigeration. The ice crystal evaporator is characterized in that a liquid inlet channel is formed by an evaporator tube, a liquid inlet and a liquid outlet in a tubular casing; and the outer channel of the evaporator tube of the tubular casing is divided into more than one S-shaped channel forming a water return channel through a water inlet of a water divider and a water outlet of a water collector. The ice crystal water cooling device is characterized in that the return air inlet of the ice crystal evaporator is communicated with a compressor, a condenser, a liquid feeding valve, a dry filter, a liquid feeding electromagnetic valve anda thermostatic expansion valve in sequence, and then is communicated with the liquid inlet of the ice crystal evaporator; a cooling water inlet / outlet of the condenser is connected with a cooling tower in series; and a water inlet / outlet of the ice crystal evaporator is communicated with a water circulating pump and an ice crystal energy storage tank in series. The invention has the advantages ofhigh cooling efficiency, no icing and low cooling temperature and is suitable for production of energy storage central air-conditioning, marine fishing, seafood processing, fruit, vegetable or meat processing, and the like; the cooled medium is municipal water.

The invention belongs to the technical field of ocean monitoring, and discloses a heaving reciprocating observation buoy with a controllable depth range, a control method and a system. The control method comprises the following steps: in a diving stage, the depth range controllable heaving reciprocating observation buoy receives a satellite signal, and a control system executes a diving action; the air bag system controls an air bag to contract through an air path adjusting device, net buoyancy is reduced, and diving is achieved by executing a diving action instruction sent by the control system. In the depth-keeping stage, the air bag volume is not changed; and a floating stage, wherein the marine physical data observed in the floating stage are uniformly sent to a satellite. The multi-stage adjustable mode of the electromagnetic valve is adopted, the opening degrees of the electromagnetic valve are different, and compared with the traditional opening degree of 0-1, the multi-stage adjustable mode is low in energy consumption consumed by opening and closing each time, the energy consumption is reduced, the service life of the buoy is prolonged, and the maintenance frequency is reduced.

The invention relates to an active hydraulic suspension shock absorber which comprises an inner pipe, an outer pipe, a guider assembly, a piston, a piston rod, a suspension seat, a first electromagnetic valve assembly, a second electromagnetic valve assembly and an energy accumulator. Meanwhile, the first electromagnetic valve assembly, the second electromagnetic valve assembly and the energy accumulator are integrated in one part, the production efficiency is improved, the production and machining technology is simplified, the shock absorber can provide the best suspension performance under various driving conditions through the integrated electromagnetic valve assemblies and an optimized hydraulic control strategy, and the service life of the shock absorber is prolonged. And the dual requirements of modern automobiles on comfort and controllability are met.

The invention discloses an intelligent control type expansion coating preparation reaction kettle device which comprises a reaction kettle body, the interior of the reaction kettle body is divided into a plurality of independent stirring cabins through partition plates, each stirring cabin is internally provided with an independent stirring assembly, a feeding assembly and an observation assembly, and each stirring assembly comprises a stirring shaft, stirring blades and a driver; the stirring blade is provided with a semiconductor chilling plate and a heating element, and the feeding assembly comprises a plurality of feeding channels connected with the stirring cabin, is provided with a flow meter, an electromagnetic valve and a dynamic adjusting module, and is used for independently controlling the feeding amount and the feeding speed of each cabin; the control system comprises a multi-channel data acquisition module, a learning module and a coordination control module, the multi-channel data acquisition module is provided with a sensor network for monitoring the temperature, the pressure and the material state of each stirring cabin in real time for each stirring cabin, and the control system performs coordination control on the stirring cabins according to preset parameters or autonomous learning results. And the stirring speed, temperature and feeding strategy of each cabin are dynamically adjusted.

The invention discloses an electromagnetic valve engineering design optimization method, and relates to the technical field of electromagnetic valve engineering design. According to the method, boundary condition parameters are clearly designed by obtaining high-pressure fluid control demand data, and an optimization constraint condition set is established, so that the design accuracy is ensured. Designing parameters are converted into optimization variables through gene coding, a fitness function is constructed through a genetic algorithm, and a solution set is generated; in a particle swarm optimization stage, design parameters are initialized to be particles, a multi-objective optimization function is defined, and a fitness function solution set is gradually optimized by utilizing an inertia weight and a group optimal guide search direction. The performance of the electromagnetic valve is verified through finite element analysis and fluid dynamics simulation, whether the control requirement is met or not is analyzed, and design parameters are finely adjusted according to the simulation result. The problems that the electromagnetic valve is insufficient in performance and unreasonable in design in the high-pressure fluid control process are effectively solved.

The invention discloses an automatic batching and stirring control system based on an industrial computer, belongs to the field of new wall material production control systems, and aims to solve the problems that the real-time performance is poor, and the influence of raw material characteristic changes on a fall value cannot be pre-judged. Weighing, humidity, infrared flow velocity, temperature, pressure, torque and airflow sensors are integrated, multi-dimensional parameters such as material weight, flow velocity, humidity and air pressure in a bin are monitored in real time, the influence of environmental interference on the sensors is dynamically compensated through multi-parameter collaborative feedback, the real-time performance and reliability of data acquisition are improved, a fuzzy PID control algorithm and a machine learning model are fused, and the real-time performance of the system is improved. A nonlinear mapping relation is established through a training data set, the initial valve opening degree and the fall value are predicted, errors are corrected in real time, dependence on historical data is reduced, the first-time use error of a new formula is reduced, the response time for coping with sudden environment changes is shortened, a single adjustable-caliber electromagnetic valve is adopted, the inner wall is coated with a nano anti-sticking coating, and the service life of the valve is prolonged. And the opening degree is dynamically adjusted in combination with a PID algorithm.

The invention provides a carrier and an electromagnetic valve control method and system. The control method comprises the steps that a characteristic parameter set of an electromagnetic valve is obtained; characteristic parameters of each dimension in the characteristic parameter set are analyzed and determined according to parameters influencing the response of the electromagnetic valve; determining the flutter current frequency of the characteristic parameter set; determining a flutter current amplitude based on the characteristic parameter set and a first mapping relation; the first mapping relation represents the mapping relation between the characteristic parameter set and the flutter current amplitude; the target current is generated according to the flutter current frequency and the flutter current amplitude, the target current is used for controlling the electromagnetic valve, the accuracy of valve element control of the electromagnetic valve is improved, the hysteresis effect of the electromagnetic valve is eliminated, and then the dynamic response speed and the control precision of the electromagnetic valve are improved.

The invention relates to the technical field of electromagnetic valves, in particular to an intelligent control faucet and a faucet body, the faucet carries a control system, and the system comprises an environment interference suppression module, a gesture recognition processing module, an electromagnetic hysteresis compensation module, a multi-parameter coupling optimization module and a residual magnetism elimination control module. According to the method, the infrared compensation proportion is dynamically adjusted by fusing the environment light intensity and the hand position information, the interference suppression capability is improved, the recognition stability under complex illumination is enhanced, the action consistency is extracted in combination with the gesture track waveform and the dynamic response feature, and the recognition accuracy is improved; electromagnetic hysteresis is dynamically corrected based on real-time current and displacement deviation combined with a temperature factor, motion feedback precision is improved, multi-parameter coupling is fused with multi-physical field data to construct a stable control reference, system sensitivity is enhanced, a reverse pulse sequence is designed by capturing a current attenuation waveform, residual magnetism interference is effectively eliminated, and system performance is improved. And multi-dimensional improvement of identification precision, control stability and response efficiency is integrally realized.

The invention provides a normally-open large-flow switching electromagnetic valve and a hydraulic control unit of an automobile braking system. The electromagnetic valve comprises an electromagnetic coil, a valve shell, moving iron, a valve element, a small-flow valve seat and a large-flow valve seat. A containing space is formed in the valve shell, a valve element, a small-flow valve seat and a large-flow valve seat are sequentially arranged in the containing space from top to bottom, the valve element is connected with the moving iron, the electromagnetic coil is arranged around the moving iron and the valve shell, a first elastic piece is arranged between the valve element and the small-flow valve seat, and the small-flow valve seat is connected with the large-flow valve seat through a second elastic piece. When the electromagnetic coil is powered off, the valve element opens the small-flow opening, and the small-flow valve seat opens the large-flow opening, so that the electromagnetic valve is opened with large flow. When the electromagnetic coil is powered on, the valve element seals the small-flow opening, and the small-flow valve seat seals the large-flow opening, so that the electromagnetic valve is closed. The electromagnetic valve can meet the requirement that an oil inlet and an oil outlet of the electromagnetic valve are normally opened and keep high overflowing capacity, and therefore pressure can be rapidly regulated and controlled.

The invention relates to a control system for a water-jet loom. A data acquisition module acquires and transmits weft tension, humidity and temperature data in real time. The parameter calculation module calculates the optimal parameters of the water spraying time, the water pressure and the nozzle opening degree through a fuzzy control algorithm according to data changes and transmits the optimal parameters to a water spraying execution mechanism. The tension adjusting module adjusts the nozzle opening degree and the water spraying time according to the comparison result of the weft yarn tension and the preset threshold value. The nozzle optimization module optimizes the nozzle design by means of a computational fluid dynamics approach. The pressure adjusting module monitors pipeline pressure through a pressure sensor, and alarms and adjusts the rotating speed of a water pump and the opening degree of an electromagnetic valve if the pipeline pressure exceeds a threshold value. The state detection module monitors knitting needles and shuttles through the machine vision technology, and water spraying parameters are adjusted when abnormity occurs. The data processing module uploads data to a cloud platform, and big data and machine learning are utilized to optimize a control strategy so as to realize real-time monitoring and accurate control of various parameters of the water-jet loom and guarantee weaving quality and efficiency.

The invention relates to the technical field of automobile seats, and discloses an automobile seat with a kneading massage function, the automobile seat with the kneading massage function comprises a seat body and a massage module arranged on the seat body, the massage module comprises a lower base plate, an upper base plate and an air pump, the lower base plate and the upper base plate are each provided with a plurality of massage actuators and an electromagnetic valve used for controlling on-off of an air path. According to the scheme, the efficient mechanical impact structure percussion plate and the telescopic rod are fused in a pneumatic system, and the mode that the air pump is used for rapidly vacuumizing and then instantly releasing is adopted, so that short, strong and impact deep finger-pressing type percussion massage which is difficult to achieve by a traditional pneumatic scheme is achieved; the defect that an existing product is insufficient in massage strength is effectively overcome, and the problems of muscular soreness after strenuous exercise and body stiffness caused by long-time driving are effectively relieved.

The invention provides a highly-integrated new energy motor home heat management system. The system comprises a refrigerating loop, a battery loop, a motor loop, a warm air loop, an engine loop, a water purification loop, a ten-way valve, a water supplementing kettle and a water supplementing pipeline. The refrigerating circuit comprises a compressor, a condenser, an electromagnetic expansion valve, an air conditioner evaporator and a chiller, the battery circuit comprises a power battery, a battery pump and a water temperature sensor, and the motor circuit comprises a motor water pump, a water temperature sensor, an electric control three-in-one unit, a driving motor, an on-off electromagnetic valve and a low-temperature radiator. The warm air loop comprises a double-area high-pressure liquid heater, a warm air pump, a cab warm air core body and a living cabin warm air core body, and the engine loop comprises an engine, an engine water pump, a water temperature sensor, a thermostat, a high-temperature radiator, an on-off electromagnetic valve and a plate heat exchanger. The water purification loop comprises a water purification tank, a water temperature sensor, a water purification pump, a three-way valve and water consumption equipment. The limo water purification system is coupled with the whole limo thermal management system, loops in the system are integrated through the heat exchanger and the ten-way valve, and maximum waste heat utilization is achieved through series-parallel connection of the loops so as to reduce energy consumption.

According to the power battery prevention and control fire extinguishing system and method, a detector assembly is additionally arranged in a battery box, and an oxygen concentration and humidity sensor, a second one-way throttling assembly and an exhaust electromagnetic valve are arranged on an exhaust pipeline. And the inert gas prevention and control unit is used for introducing high-purity inert gas into the battery box, so that a positive pressure environment in the battery box is kept, external air is prevented from entering the battery box, and a flame-retardant effect is achieved. When thermal runaway occurs in the battery box, a fire extinguishing agent is injected into the battery box through the fire extinguishing unit, the temperature in the battery box is reduced, and the chain reaction of the battery due to too high temperature in the thermal runaway process is prevented. The main control unit can control opening and closing of the electromagnetic valves according to signals of the sensors. Under normal conditions, the main control unit controls the inert gas prevention and control unit to work, and the fire extinguishing unit performs monitoring. When it is monitored that the temperature in the battery box is too high or smoke exists, the main control unit controls the fire extinguishing unit to start working, and the reliability and feasibility of system prevention and control fire extinguishing can be effectively improved.

The invention discloses a laser cutting device for steel structure English sign processing and an operation method, and relates to the technical field of laser cutting machines, the laser cutting device comprises a cutting machine mounted on a machine tool, a rotating sleeve rotationally connected with the cutting machine is mounted on the cutting machine, and a connecting part is fixedly mounted on the rotating sleeve; wherein the connecting part is sequentially provided with an oil stain detecting part, a cleaning agent spraying part, a cleaning part and a cleaning agent collecting part, and the cleaning agent collecting part is relatively close to the rotating sleeve. And the rolling type ball body is used for detecting the slag adhering condition of the English label, the rolling type ball body can be subjected to the slag adhering effect so that the position of the telescopic rod frame can be adjusted in the supporting sleeve, the electromagnetic valve controls the marking liquid in the pipe body to flow out, and the marking liquid is made to mark the slag adhering area.

The utility model discloses an automatic vacuumizing device for a vacuumizing container, and relates to the technical field of vacuumizing containers. The device comprises an upper housing, a lower housing, a control panel mounted in the lower housing, and a vacuumizing pump, an electromagnetic valve and a battery which are connected with a singlechip on the control panel, the device consists of a lower housing with an inverted n-shaped section, an upper housing with an inverted U-shaped section, a vacuum pump, an electromagnetic valve and a battery, wherein the vacuum pump, the electromagnetic valve and the battery are arranged in the lower housing; the connecting ring with the scraping ring is attached to the flat notch in the top of the bottle body, so that the bottle body structure with the flat notch can be used after being tightly attached, and the bottle cover is suitable for being used in cooperation with the bottle body with the smaller size and the smaller upper opening hole diameter. And through clamping cooperation of the first clamping structures and the second clamping structures, the whole automatic vacuumizing device does not need to be locked and fixed through bolts, can be efficiently assembled and is good in stability.

The invention discloses a control method of a flap unloading platform, which is applied to a hydraulic control system of the flap unloading platform, and comprises the following steps: acquiring a starting signal, and enabling a power driving branch based on the starting signal; the system pressure of a hydraulic control system of the turning plate unloading platform is controlled by the power driving branch to be gradually increased; in response to the fact that the system pressure is equal to the preset value, the power-on state of the main electromagnetic valve is changed, the first proportional throttle valve and the second proportional throttle valve are adjusted based on the second working state of the main electromagnetic valve, the first lifting oil cylinder and the second lifting oil cylinder are controlled to act, and the turning plate unloading platform is driven to rotate; and in response to rotation of the flap unloading platform to the preset angle, the power-on state of the main electromagnetic valve is changed, so that the flap unloading platform is controlled to stop rotating based on the first working state of the main electromagnetic valve. By controlling the first proportional throttle valve and the second proportional throttle valve which are independent, independent control over the first lifting oil cylinder and the second lifting oil cylinder is achieved so that synchronous action can be achieved.

The invention relates to the technical field of automobile air suspensions, and discloses an air suspension system and a vehicle, and the air suspension system comprises a mechanical module and an electronic central control module. The mechanical module comprises a valve body, an air path, an air supply unit, a pressure sensor and a drying chamber assembly, the air supply unit is connected with the valve body through the air path, and the valve body is provided with various valves and is connected with the filtering chamber assembly. The electronic central control module comprises a central control upper cover, a central control base, a central control PCBA circuit board and a switching electromagnetic valve coil. An electromagnetic valve driving circuit on the circuit board is used for controlling opening and closing of an electromagnetic valve. Air compressed and filtered by the air supply unit enters the valve body through the drying cavity assembly, and then the switching electromagnetic valve set is controlled by the electronic central control module to conduct air supply switching. The system is further provided with an inflation pump, an inflation motor, a plurality of sets of switching electromagnetic valves and an air electromagnetic valve which are used for controlling air supply and air exhaust of different air paths. According to the system, efficient and safe operation of the air suspension is achieved through air path design and electronic control.

The invention relates to the technical field of sewage treatment devices, in particular to a sewage multi-stage separation treatment device and method.The sewage multi-stage separation treatment device comprises a settling tank, a glass observation window used for observing the interior of the settling tank is inlaid in the side wall of the settling tank, and a water outlet is formed in the bottom of the settling tank; an electromagnetic valve is arranged in the water outlet, a filter box is fixedly connected to the top of the sediment box, two filter screens for filtering sewage are fixedly connected to the interior of the filter box, a water inlet is fixedly connected to one side of the filter box, one end of the water inlet inclines towards the filter screens, and the other end of the water inlet inclines towards the filter screens; and a cleaning mechanism for cleaning the filter screen is arranged in the filter box. Compared with the prior art, the device has the advantages that impurities filtered on the filter screen can be continuously cleaned, scraped and collected in the filtering process, meanwhile, the filter screen does not need to be detached and cleaned, and rapid precipitation of the impurities in sewage in the precipitation tank can be effectively promoted by quantitatively adding a flocculating agent, so that the precipitation efficiency is improved.

The invention relates to a system and method for rapidly establishing steady state vacuum chamber pressure. According to the system, the set value of the vacuum valve is fixed, and the driving current of the MFC electromagnetic valve is used for adjusting the pressure of the cavity, so that the pressure is stabilized more quickly. The system can operate in a training mode and an inference mode. In the training mode, a PID controller is used for determining set values of an MFC and a vacuum valve; in an inference mode during substrate processing, these settings are quickly invoked and executed, thereby achieving efficient and stable pressure control.

The invention discloses a digital twin intelligent test run system based on a marine medium-speed diesel engine and a monitoring method, relates to the technical field of monitoring, and is used for solving the problems of degeneration identification lag and low emission early warning precision of an oil injector. The system comprises a multi-source heterogeneous data preprocessing module and a running state intelligent diagnosis module. The multi-dimensional data acquisition module is used for acquiring in-cylinder pressure, crankshaft torsional vibration and transient air-fuel ratio signals to construct multi-dimensional data vectors, and the multi-dimensional data acquisition module is used for analyzing combustion fluctuation characteristics based on an attention mechanism LSTM (Long Short Term Memory) network, identifying early deterioration of an oil injector and outputting an oil injection consistency coefficient and a fault type identifier. The method comprises the steps that according to an oil injection consistency coefficient, electromagnetic valve response delay and combustion parameter correlation are tracked, a degradation trend is predicted, and emission early warning is generated; and according to prediction and early warning results, fuel injection compensation parameters are dynamically adjusted in the digital twinborn model, a recursive least square method is adopted to identify combustion parameters and feed the combustion parameters back to an electric control unit, and self-adaptive optimization and closed-loop control in the test run stage are achieved.

The invention discloses a system and method for measuring the opening and closing state of an electromagnetic valve, and relates to the technical field of electromagnetic valves.The method comprises the steps that after an electromagnetic valve control signal is triggered, dynamic inductance L at each moment t is obtained through real-time backstepping by means of a voltage and current sampling module integrated in a driving loop and an inductance analysis module in a local microcontroller MCU; gaussian filtering processing and derivative calculation are carried out on the dynamic inductance L in the edge calculation module, first-order derivative and second-order derivative characteristics are extracted, and an inductance mutation factor index Cimp is obtained through calculation. According to the method, clamping stagnation, rebound and discontinuous abnormal states occurring in the opening and closing process of the electromagnetic valve are comprehensively reflected, a sudden change threshold value Cthr is set and compared, and a set of dynamic opening and closing behavior diagnosis mechanism with high resolution and high adaptability is constructed. According to the method, high-frequency dynamic response extraction and abnormal trend quantification can be completed within 100 ms after the control signal is triggered, and the method has higher early warning capability and non-intrusive compatibility.

A controller is configured to control an internal combustion engine. The controller is configured to perform a fuel pressure control of adjusting a fuel pressure downstream of an electromagnetic valve in a flow direction of fuel in a fuel passage to a prescribed pressure lower than a fuel pressure upstream of the electromagnetic valve by repeatedly performing opening and closing operations of the electromagnetic valve. The controller includes processing circuitry. The processing circuitry is configured to execute a process of setting opening and closing time points of the electromagnetic valve such that a valve opening period of the electromagnetic valve during execution of the fuel pressure control overlaps with a valve opening period of the fuel injection valve.

The invention discloses a pilot head assembly and an electromagnetic valve, and relates to the technical field of electromagnetic valves.The pilot head assembly comprises a shell sleeve, an inner cavity of the upper end of the shell sleeve is fixedly connected with a first fixed iron core, and the position, corresponding to the first fixed iron core, of the outer wall of the shell sleeve is sleeved with a first electromagnetic coil; the lower end of an inner cavity of the shell sleeve is fixedly connected with a second fixed iron core, the position, corresponding to the second fixed iron core, of the outer wall of the shell sleeve is sleeved with a second electromagnetic coil, and a movable iron core piston seat is movably connected to the bottom of the shell sleeve in an inserted mode. Through cooperative control of the double-electromagnetic-coil structure and the rotating ratchet mechanism, stepless switching of the electromagnetic valve between the normally-open state and the normally-closed state is achieved, the stroke of the sealing plug can be accurately positioned through the limiting clamping groove of the ratchet sleeve under the action of different electromagnetic fields, mode switching can be completed without an external mechanical device, and the working efficiency is improved. The problem that switching of a traditional electromagnetic valve needs a complex external device is solved.

The invention discloses an electric control type constant oxygen partial pressure closed diving respirator system which comprises an air supply subsystem, a breathing circulation subsystem and an electric control subsystem. The air supply subsystem comprises an oxygen supply system and a diluted gas supply system, the breathing circulation subsystem comprises a breathing circulation pipeline and a carbon dioxide absorbent tank connected in the breathing circulation pipeline in series, and the electric control subsystem comprises an oxygen supplementing electromagnetic valve installed between the oxygen supply system and the breathing circulation pipeline. The gas sensor is used for collecting gas parameters in a breathing circulation pipeline, and the display device, the control panel and the power source are connected with the oxygen supplementing electromagnetic valve and the gas sensor. The oxygen supply can be accurately controlled, the adjustability is high, the response is quick, the stability is good, meanwhile, information can be detected and displayed in real time, and the use safety and comfort are improved.

The invention provides an electromagnetic valve control system and method for agricultural irrigation, and relates to the technical field of electromagnetic valve control, and the method comprises the steps: determining a lag fault-tolerant point when an electromagnetic valve for controlling an irrigation nozzle generates control lag during agricultural irrigation according to the actual condition information and control state data of the electromagnetic valve; performing coordinated correction on the action time of the electromagnetic valve based on the action limit interval and the irrigation spraying amount to obtain a coordinated correction characteristic when the electromagnetic valve for controlling the irrigation nozzle generates control lag during agricultural irrigation, and determining a control fitting threshold when the electromagnetic valve performs irrigation spraying control at different action time according to the coordinated correction characteristic; and fault-tolerant control is carried out on an electromagnetic valve for controlling an irrigation nozzle during agricultural irrigation according to the action feedback deviation. The action feedback of the electromagnetic valve can be monitored in real time in the control process of the electromagnetic valve, the control lag is recognized and corrected, accurate coordination correction is carried out, the control parameters of the electromagnetic valve are dynamically adjusted, and the control stability of the irrigation system is improved.

The invention relates to the technical field of automobile hub machining equipment, and discloses a punching device for automobile hub production, which comprises a moving seat, the bottom of the moving seat is rotatably connected with a rod seat, the bottom of the rod seat is fixedly connected with a drilling rod for punching, and the outer wall of the drilling rod is provided with a spiral groove. Connecting plates are fixedly connected to the two sides of the bottom of the movable base, and an outer cylinder is arranged between the two connecting plates. The opening degree of the connecting hole is adjusted through staggering of the connecting hole and the adjusting hole, so that the flow of cutting fluid entering the inner barrel in the solution tank is adjusted, the opening degree is reduced before a drill rod makes contact with a hub, extra waste of the cutting fluid is avoided, and after a drilled hole reaches the rated depth, the outer edge of the inner barrel abuts against an ejector rod to push a sliding plug to compress a solution cavity; and meanwhile, the first contact switch is triggered, the electromagnetic valve is closed, the remaining cutting fluid is used for subsequent infiltration under the condition that the flow is guaranteed, waste of the cutting fluid is further avoided, and the hub machining cost is reduced.

The invention discloses a control method and device of a vehicle suspension shock absorber, a vehicle controller and a storage medium, and relates to the field of vehicle control. The method comprises the steps of obtaining a wheel acceleration signal, a vehicle body posture signal, a vehicle speed signal and a shock absorber stroke signal; according to the wheel acceleration signal and the vehicle speed signal, road surface protrusion working condition identification is carried out; when the vehicle is in the road surface protruding working condition, the actual control current of a shock absorber electromagnetic valve is determined according to the wheel acceleration signal, the vehicle body posture signal, the vehicle speed signal and the shock absorber stroke signal; and the vehicle suspension shock absorber is controlled based on the actual control current, so that discomfort caused by the fact that wheel impact is transmitted to a vehicle body during road surface protrusion impact can be effectively reduced, impact aftershock can be rapidly reduced after road surface protrusion impact, and the riding comfort is improved.

The invention discloses a temperature compensation method and system, and the method comprises the steps: receiving a valve block temperature signal collected by a temperature sensor integrated with a pressure sensor in a closed gas supply unit, and an electronic element temperature and environment temperature signal collected by a temperature sensor on a control unit PCB, generating an initial temperature-working condition data set by combining the power of the air pump and the working duration of the electromagnetic valve; performing thermal resistance network modeling on the initial temperature-working condition data set, constructing a multi-node thermal characteristic matrix, and decomposing the matrix into a plurality of sub-matrixes; performing real-time operation on the sub-matrix by using a dynamic heat balance algorithm to generate a temperature estimation result of the key component; and generating a temperature compensation control instruction according to the temperature estimation result of the key component. According to the embodiment of the invention, the temperature of the key component can be accurately estimated, dynamic compensation is realized, and the control precision and stability of the closed gas supply unit are improved.

The invention discloses a performance detection device for an automobile brake pad in the technical field of automobile brake pad detection. Comprising a controller, a tire, a detection body and two brake pads, a detection groove is formed in the top of the detection body, a water inlet pipe and a water outlet pipe are arranged on the surfaces of the two sides of the detection body respectively, and a first electromagnetic valve and a second electromagnetic valve are arranged on the water inlet pipe and the water outlet pipe respectively and electrically connected with the controller; a rotating assembly and a brake assembly are installed in the detection groove, an air blowing assembly is installed on the inner wall of the detection groove, and a signal assembly is installed at the bottom of the detection groove. The rotating assembly, the brake assembly, the air blowing assembly and the signal assembly are electrically connected with the controller. The device is simple and easy to operate, through cooperative work of the detection body, the water inlet pipe, the water outlet pipe, the rotating assembly and the brake assembly, performance indexes of the brake pad can be detected under the conditions of simulating road surface ponding, muddy road sections and the like, and therefore detection data are more reliable and scientific.