836 results about "Air suspension" patented technology

The invention provides a predictive maintenance method and system for an air suspension fan based on digital twinning, and the method comprises the steps: collecting an air flow abrupt change characteristic when high-temperature dust-containing waste gas flows into the air suspension fan, transmitting the air flow abrupt change characteristic to a digital twinning system, and determining the air flow abrupt change characteristic; extracting a local clearance reduction trend of the foil and the bearing from the non-uniform expansion amount of the foil, and calculating space distribution after clearance reduction to obtain a target gas film thickness value; the target gas film thickness value is compared with a preset collision and abrasion threshold value, and if the target gas film thickness value is smaller than the threshold value, the collision and abrasion risk probability is evaluated through a Monte Carlo method; if the collision and abrasion risk probability exceeds a preset safety range, calculating a gas film rigidity fluctuation range based on a gas dynamics theory; and extracting a vibration amplitude analysis result from the dynamic response parameters of the foil bearing of the air suspension fan, and calculating a stability prediction index.

The invention relates to an air suspension controller function automation test system and a test method. The air suspension controller function automation test system comprises a cabinet which comprises a board card assembly and a real-time processor, and the board card assembly comprises an IO board card and a load board card; a tested air suspension controller; a real load; a CANoe software, a Notepad + + software and a MATLAB / Simulink software are operated on the upper computer; during working, the upper computer generates a control signal to trigger a test, the real-time processor sends an analog sensor signal, the controller calculates a target current, the shunt drives a real load and model update, and the controller generates an observation signal and returns the observation signal to the upper computer after a model state is fed back. The system and the method can realize full-working-condition automatic testing and improve the efficiency and the coverage range.

The invention relates to a three-dimensional microgravity simulation system, and belongs to the field of spaceflight mechanism ground tests. According to the three-dimensional microgravity simulation system, ground six-degree-of-freedom microgravity simulation can be realized, the aircraft simulator and accessories thereof have a five-degree-of-freedom motion state on an air floating plane through the five-degree-of-freedom air floating platform, and the aircraft simulator can have a three-dimensional space six-degree-of-freedom motion state through the magnetic air suspension assembly. In the process of a ground microgravity experiment, the gravity of the movement of the aircraft and accessories thereof is unloaded by the magnetic suspension assembly, so that the movement interference of the aircraft simulator and the microgravity simulation tool is avoided, and the problem of dynamic high-precision gravity unloading is solved.

The invention discloses an air suspension turbine power generation and refrigeration integrated device which comprises a shell, a stator and a rotor spindle, the rotor spindle is rotationally arranged in the shell through a bearing assembly, the stator is fixed in the shell and is coaxial with the rotor spindle, and an air gap exists between the stator and the rotor spindle to form a permanent magnet synchronous generator. The rotor further comprises a first-stage volute, a second-stage volute, a first-stage radial flow turbine, a second-stage radial flow turbine, a volute connecting pipe and a cooling water jacket, the first-stage volute and the second-stage volute are fixed to the two ends of the shell respectively, and the first-stage radial flow turbine and the second-stage radial flow turbine are coaxially fixed to the two ends of the rotor spindle respectively and are arranged back to back; the first-stage radial flow turbine is located in the first-stage volute, the second-stage radial flow turbine is located in the second-stage volute, the first-stage volute is provided with a high-temperature and high-pressure air inlet and a first-stage air outlet, and the second-stage volute is provided with a second-stage air inlet and an expansion cooling air exhaust port; the device has the advantages of being capable of stably running at a high speed in a high-altitude low-pressure environment and simultaneously achieving efficient power generation and refrigeration functions.

The invention discloses a multi-parameter fusion air suspension heat pump AI load prediction energy-saving control method. The method comprises the following steps: constructing a multi-source heterogeneous parameter acquisition system and preprocessing data; fusing the parameter spatio-temporal features through a multi-head spatio-temporal feature extraction module embedded with an attention mechanism; establishing a load prediction model integrating a long-short-term memory network and thermodynamic physical constraints; on the basis of a model predictive control framework, a future control instruction is optimized under the condition that comfort and equipment safety constraints are met; an online learning and updating mechanism based on prediction error triggering is introduced, and the model weight is dynamically and finely adjusted to adapt to system characteristic changes. According to the technical scheme, the load prediction precision and the control response speed under the complex working condition are remarkably improved, the real-time optimization of the system energy efficiency is achieved, and the long-term operation stability is guaranteed.

The invention discloses a power-on self-test method and system for a closed air suspension system, and the method comprises the steps: starting self-test after receiving a vehicle power-on signal, opening an air path switching valve RV2 and an air escape valve VV, enabling a pressure sensor pipeline to be communicated with the atmosphere, and generating an initial air path detection result; based on the initial gas path detection result, closing a gas release valve VV and opening a gas path switching valve RV1 to enable a pressure sensor pipeline to be communicated with the gas storage tank, and generating a gas path detection result of the gas storage tank; on the basis of the air storage tank air path detection result, an air path switching valve RV1 is closed, all air spring distribution valves ASV1 to ASV2 are sequentially opened, and an air spring detection result is generated; and on the basis of the air spring detection result, all the distribution valves are closed, the air path switching valve RV2 is opened, the air pump is started, a pressure value is read after waiting for a preset time T4, when the pressure value is larger than a threshold P7, it is judged that the air pump is normal, and a system self-inspection result is generated. According to the embodiment of the invention, comprehensive self-inspection of the system can be quickly completed when the vehicle is powered on, and the reliability of the vehicle is improved.

The application provides an air suspension system and a vehicle. The air suspension system comprises a first air spring, a second air spring and a gas storage component, and further comprises: a first electromagnetic switch valve connected to the first air spring; a second electromagnetic switch valve connected to the second air spring; a third electromagnetic switch valve connected between the first electromagnetic switch valve and the gas storage component; and a fourth electromagnetic switch valve connected between the second electromagnetic switch valve and the gas storage component. When the first electromagnetic switch valve, the second electromagnetic switch valve, the third electromagnetic switch valve and the fourth electromagnetic switch valve are all powered on, the first electromagnetic switch valve and the third electromagnetic switch valve form a first gas path with the gas storage component, the second electromagnetic switch valve and the fourth electromagnetic switch valve form a second gas path with the gas storage component, the gas storage component inflates the first air spring through the first gas path, and the gas storage component inflates the second air spring through the second gas path, so that the body height of the front axle and the rear axle of the vehicle can be synchronously lifted.

The invention provides a desiccant back flushing control method and device and an air suspension system.The method includes the steps that a controller of the air suspension system calculates the mass of air sucked from the outside by a high-pressure air tank according to the pressure value and the temperature value of the high-pressure air tank, and then the mass of the air sucked from the outside by the high-pressure air tank is calculated according to the maximum mass of the air capable of being adsorbed when the desiccant reaches the complete saturation state; the saturation rate of the drying agent is obtained, the state of the drying agent is judged based on the saturation rate, and when it is determined that the drying agent reaches the saturation state, the back flushing program is started. As the pressure value and the temperature value of the high-pressure air tank can be obtained by using the original pressure sensor and the original temperature sensor in the air suspension system, a humidity sensor and a flow sensor do not need to be additionally arranged, the system cost can be reduced, and the system reliability is improved. The saturation rate of the drying agent is judged by accurately calculating the mass of air accumulated by the air tank and sucked from the outside, and accurate control over back flushing of the drying agent can be achieved.

The invention discloses a control method for desiccant regeneration in an air suspension system. The control method comprises the steps that the current environment condition of the air suspension system is obtained; according to the environmental conditions, a blowback execution strategy corresponding to the environmental conditions is determined from a pre-stored control data set, and the control data set is obtained in advance on the basis of executing calibration tests of dynamic simulation working conditions under different environmental conditions; the dynamic simulation working condition is used for simulating consumption of compressed air in the actual vehicle running process; and in the operation process of the air suspension system, according to the back flushing execution strategy, the air suspension system is controlled to execute the back flushing action, so that regeneration of a drying agent in the air suspension system is achieved. Meanwhile, the invention further discloses an air suspension system, a control unit and a vehicle.

The invention discloses an air suspension dryer, and aims to solve the problems that the sealing effect is poor in the heating process of a traditional dryer, and the sealing performance and the heating effect of the dryer are affected. The air suspension dryer comprises a dryer body, a heating assembly and a heat insulation cover, and the dryer body and the heating assembly are located in the heat insulation cover; the heating assembly comprises a first insulating layer, a heating resistance layer and a second insulating layer, the first insulating layer, the heating resistance layer and the second insulating layer are sequentially arranged on the outer side of the dryer body, the heating resistance layer is connected with an external circuit, and a gap is formed between the second insulating layer and the heat insulation cover. The heating assembly is directly sintered or attached to the outer side of the dryer body, and the heating function and the drying function are highly integrated. The external heating assembly can prevent the initial structure of the dryer body from being changed, and the sealing performance of the dryer body is ensured. The general arrangement design is facilitated, and meanwhile, the production and assembly cost can be reduced.

The invention discloses a cross-domain coupling control method for an air suspension and an active stabilizer bar. The cross-domain coupling control method comprises the steps that a signal input layer collects and fuses data and transmits the data to a decision-making layer; the decision-making layer forms a control instruction based on a model predictive control algorithm, and comprises the steps of constructing an automobile three-degree-of-freedom coupling dynamic model, and iteratively solving a cost function minimum value in a rolling time domain to obtain the control instruction; the three-degree-of-freedom coupling dynamic model quantifies multi-dimensional motion association through a stiffness matrix off-diagonal term, can accurately predict the cross influence of air pressure adjustment of the air suspension on the roll motion, and provides a nonlinear prediction basis for model prediction control. According to the invention, by cooperating with the multi-dimensional dynamic signal and the dynamic arbitration control logic, the complex composite working condition is adapted, and the cooperative optimization of the vertical comfort, the roll stability and the pitching dynamic characteristic of the vehicle is realized.

The invention relates to the technical field of new energy automobile air suspensions, and particularly discloses a heat-resistant ozone-resistant air spring outer layer rubber material. The rubber material is prepared from natural rubber, chlorosulfonated polyethylene rubber, ethylene-vinyl acetate rubber, high-activity magnesium oxide, stearic acid, an anti-aging agent, microcrystalline wax, tert-butylphenol formaldehyde resin, reinforcing filler, a plasticizer, zinc oxide, a vulcanizing agent and an accelerant. The invention also discloses a preparation method of the sizing material. The heat-resistant ozone-resistant air spring outer layer rubber material disclosed by the invention has good heat resistance, cold resistance and ozone aging resistance, and also has the advantages of wide application environment range and long service life.

The invention discloses a humidity detection blowback regeneration control method, an air suspension system and a vehicle, and realizes dynamic monitoring of the state of a drying unit by detecting the humidity of gas flowing through the drying unit in real time. When the detected humidity exceeds a preset threshold value, the system automatically triggers a blowback regeneration program; and if the blowback frequency reaches the preset upper limit and the humidity still exceeds the standard, generating an abnormal alarm signal. The mechanism can dynamically adjust the blowback frequency according to the actual working condition to adapt to the requirements of different use scenes. Meanwhile, early recognition and early warning can be carried out on faults of the drying unit, damage to high-value assemblies in the system due to excessive moisture invasion is avoided, the overall reliability is improved, and the service life is prolonged.

The application relates to a vehicle body structure and a vehicle. The vehicle body structure comprises a longitudinal beam, a cross beam, a trunk, an air tank, an air pump and a rear suspension. The longitudinal beam and the cross beam are connected with each other, and the longitudinal beam and the cross beam are used for supporting other structural components of the vehicle body structure. The longitudinal beam extends into the trunk. The air pump is connected with the longitudinal beam extending into the trunk. The air pump and the air tank are arranged on both sides of the central axis of the vehicle body structure and are located close to the rear suspension. According to the embodiment of the application, the arrangement requirements of the air suspension air pump and the air tank can be met while the trunk space of the vehicle is expanded, and interference between the expanded space and other vehicle body structures of the vehicle is avoided.

The invention discloses a vehicle energy interaction method, device and system and a vehicle, and belongs to the technical field of vehicle control. The method comprises the steps of determining a target energy interaction mode based on driving parameters and environmental parameters of a vehicle; a first control signal and a second control signal are generated based on the target energy interaction mode, the first control signal is used for controlling the output power of a compression refrigerant flowing through the coupling compressor and the output power of compressed air, and the second control signal is used for controlling a reversing valve to be switched between a compressed air loop and a compression refrigerant loop; and cooperatively controlling a coupled compressor and a reversing valve according to the first control signal and the second control signal so as to execute an energy interaction operation between the thermal management system and the air suspension system indicated by the target energy interaction mode. The system structure of the whole vehicle is simplified, the hardware arrangement difficulty and cost are reduced, energy consumption is reduced, and therefore the energy utilization rate of the whole vehicle is increased.

The invention discloses a vehicle air suspension height compensation method, device and equipment and a storage medium. Firstly, the driving state of a target vehicle, the road surface unevenness and the current heights (including the heights of the right front air bag, the left front air bag, the right rear air bag and the left rear air bag) of four air bags can be obtained. The average height of the front axle is then calculated from the heights of the right front and left front airbags, and the compensated height of the front axle is determined in conjunction with the target airbag height. Then, the right front air bag and the left front air bag are adjusted according to the compensated height, and balance of the front axle is ensured. And for the rear axle, the driving state of the vehicle, the road surface unevenness, the target height of the air bags and the current height of the right rear air bag and the current height of the left rear air bag are considered, and then corresponding height compensation is conducted on the two air bags of the rear axle. When the vehicle runs on different road shoulders, height compensation control between the air bags can be achieved, so that the heights of the four air bags are effectively coordinated, it is ensured that the vehicle body is kept balanced, and then driving safety and comfort are improved.

The invention discloses a filter unit, air supply equipment, an air suspension system and a vehicle. The filter unit comprises a shell, a drying agent and a pressure relief device, and an inlet and an outlet are formed in the shell; the drying agent is arranged in the shell; the pressure relief device is arranged on the shell, a pressure relief opening is formed in the pressure relief device, and when the pressure relief opening is opened, fluid at the outlet is suitable for flowing through the drying agent and being discharged to the external atmosphere through the pressure relief opening. Therefore, the filtering unit is small in part number, high in integration level, simple in structure and high in space utilization rate, the production cost of the filtering unit is reduced, the reliability of the filtering unit is improved, and the service life of the filtering unit is prolonged.

The invention discloses an air suspension rigidity self-adaptive adjusting system based on double-temperature feedback. The data monitoring and collecting module is used for monitoring and collecting the gas temperature in an air spring airbag cavity, the rubber temperature of the outer surface of an airbag, the gas pressure in the air spring airbag cavity, the gas volume in the air spring airbag cavity, the airbag height and the current vehicle working condition. The coupling rigidity calculation module is used for establishing a rubber rigidity model and calculating the rubber rigidity according to the rubber body temperature of the outer surface of the airbag and the airbag height; the inflation and deflation control module is used for generating target total rigidity according to the current vehicle working condition, calculating target gas pressure in the air spring airbag cavity according to the target total rigidity, the rubber rigidity, the gas temperature in the air spring airbag cavity and the gas volume in the air spring airbag cavity, and sending an inflation and deflation control instruction to inflation and deflation equipment; and the air pressure Pg in the air spring airbag cavity reaches the target air pressure in the air spring airbag cavity.

An aerosol delivery system is disclosed. The system comprises an aerosol container housing an aerosol composition that includes a propellant mixture and an additive. The propellant mixture comprises a first hydrofluoroolefin propellant in an amount of 50% to 99% w / w % and a second hydrofluoroolefin propellant in an amount of 1% to 50% w / w %. The additive is present in an amount of up to 70% w / w %, has a specific gravity of 0.5 to 1.2, a partition coefficient of −0.5 to 4, and a water content of up to 2% w / w %. A micromist actuator with an orifice diameter of 0.25 to 0.80 microns produces droplets of 25 to 50 microns. The aerosol has a viscosity of 0.5 to 3.0 centipoise, ensuring fine mist dispersion, prolonged airborne suspension, and consistent delivery, making it suitable for environmental scenting, air treatment, and personal care applications.

The invention discloses a closed-loop test system for a hardware-in-loop control air suspension. The closed-loop test system comprises an air suspension ECU to be tested; the simulation module is used for correspondingly simulating various vehicle parameters based on various vehicle parameter simulation models; the hardware simulation module is used for providing a hardware simulation signal for the air suspension ECU; the control module is used for controlling the simulation module and the hardware simulation module based on a test case when a test instruction is received, and outputting a target vehicle parameter and a target hardware simulation signal; the air suspension ECU performs closed-loop testing based on the target vehicle parameters and the target hardware simulation signals, so that real-time interaction and closed-loop logic among various modules in the dynamic state of the whole vehicle can be truly simulated, the simulation precision of the working condition of the air suspension is improved, an accurate test result is provided, and the test efficiency is improved. And the problems of high cost, long period, low repeatability and safety risk under limiting working conditions caused by real vehicle testing are avoided.

A method for regulating an air suspension system of a stationary motor vehicle, includes comparing a predetermined target level position with an actual level position of the vehicle; determining an actual air quantity in at least a number of air springs of the air suspension system and comparing the actual air quantity with a reference air quantity. If the actual level position falls below the target level position and the determined air quantity falls below the reference air quantity, the air springs of the air suspension system are then filled while the actual level position is monitored. If the actual level position continues to be below the target level position or the actual level position does not change, the filling of the air springs is carried out only until the reference air quantity corresponding to the target level position is reached as the actual air quantity in the air springs.

The invention relates to the technical field of suspension control, and provides an automobile air suspension automatic control method and system based on multi-modal data recognition, the method is applied to an air suspension, and the method comprises the steps that at the first moment, first data collected by a multi-modal collector of a vehicle is obtained; wherein the first data is target road condition information determined by a multi-mode collector on the next driving road condition of the current vehicle; and according to the first data, a suspension scene at a second moment after the first moment and braking parameters corresponding to the suspension scene are determined. The method is used for automatically recognizing an automatic control scene of the air suspension, automatic braking operation is achieved under the automatic control scene, and a vehicle body is kept stable.

The invention discloses a training method, a prediction method and related equipment of an automobile air suspension system height sensor offset fault diagnosis model. The training method comprises the following steps: acquiring operation data samples of an air suspension system in different states and different road conditions under natural driving; performing sample division on the operation data sample by adopting a first sliding time window to obtain independent samples and sample numbers, and performing segmentation processing on the independent samples by adopting a second sliding time window to obtain independent fragments; extracting a feature vector sample and a label of each independent fragment; determining an input vector according to the feature vector sample, the label and the sample number, training the first model to obtain a second model, performing feature dimension reduction based on reset importance to obtain a dimension-reduced feature vector sample, and training the second model to obtain a fault diagnosis model. According to the embodiment of the invention, the accuracy of fault identification and positioning can be improved. The sensor can be widely applied to the field of automobile sensors.

The utility model relates to the technical field of electronics, in particular to a valve structure, an air suspension system and a vehicle. The valve structure comprises a fixing assembly, a valve element, a first elastic piece and a second elastic piece, the fixing assembly is provided with a cavity and a first opening communicated with the cavity, and the valve element is arranged in the cavity and can move between a first position and a second position so that the first opening can be closed when the valve element is located at the first position and opened when the valve element is located at the second position; the first elastic piece is arranged at one end of the valve element and provides first elastic force towards the first position for the valve element, and the second elastic piece is arranged at the other end of the valve element and provides second elastic force towards the second position for the valve element. According to the technical scheme, the first elastic piece and the second elastic piece are arranged to assist valve opening and valve closing, the valve opening and closing response speed of the valve structure can be increased, the impact force of the valve element can be buffered, the problem of loss of the valve element, the fixing assembly and other components can be solved, and the service life of the elastic pieces is prolonged.

The utility model provides an asynchronous induction waste collecting shaft of a circular knife machine, and relates to the technical field of circular knife machine die cutting, the asynchronous induction waste collecting shaft comprises an asynchronous waste collecting shaft set, a processing chamber and a die material, the asynchronous waste collecting shaft set comprises a set board, a servo motor is installed on one side of the top of the front face of the set board, and a transmission shaft is installed outside the output end of the servo motor; the servo motor and the transmission shaft are connected through a coupler, an air expansion shaft is installed on one side of the front face of the unit board, a guide shaft is installed on the other side of the front face of the unit board, an asynchronous die is omitted in the whole asynchronous waste collecting shaft set, suspended attaching feeding is adopted, an original finished product cutting die is not changed, and the material specification is changed into two independent control from original synchronous feeding and whole attaching. Materials are fed through friction and extrusion of the cutting die foam when being subjected to rolling cutting through the die, the waste collecting shaft and the die tool apron are inducted to conduct asynchronous material pulling, the distance between the materials is shortened, and therefore the materials are saved.

The invention relates to the technical field of air blowers, and discloses an emptying and pressure relief air suspension air blower system under a non-stop working condition, which comprises an air suspension unit for realizing non-contact suspension of a rotor through electromagnetic force or an air film so as to reduce mechanical friction; the emptying pressure relief unit is used for monitoring the internal pressure in real time in the system operation period and executing pressure relief operation when the pressure exceeds a preset threshold value, and non-stop pressure relief is achieved; the air duct design unit is used for optimizing an air flowing path and comprises a gradually-shrunk and gradually-expanded air duct and a flow deflector so as to improve the air flow stability and reduce the energy loss; the control and monitoring unit is used for collecting sensor data in real time and coordinating operation of the air suspension unit, the emptying pressure relief unit and the air duct design unit through a self-adaptive control algorithm; by integrating the technologies of air suspension, air duct optimization, intelligent evacuation and pressure relief and the like, the efficiency of the air blower system is improved under the non-stop working condition, and remarkable economic benefits and social benefits are achieved.

The utility model relates to the technical field of air springs, and provides an air spring assembly and an air suspension system. The air spring assembly comprises an air bag and a piston assembled at the end of the air bag. The cushion block is arranged at the first end, away from the air bag, of the piston, the first end of the piston is provided with a limiting cavity, the cushion block is provided with a channel communicating with the limiting cavity, and the first end, away from the piston, of the cushion block is provided with a mounting part; the connecting piece comprises a head part and a rod part, the head part extends into the limiting cavity and is limited by the second end, close to the piston, of the cushion block, and the rod part penetrates through the channel and extends out. According to the air spring assembly, through cooperation of the cushion block, the connecting piece and the piston, the air spring assembly can be suitable for scenes with different suspension heights so as to adapt to different vehicle models, flexible connection is provided so as to adapt to dynamic working conditions of vehicles, meanwhile, the service life of parts is prolonged, and the working performance of the air spring assembly is improved.

The utility model discloses a kind of connecting structure of air suspension guiding arm and support and air suspension, the connecting structure of air suspension guiding arm and support includes support fixed on vehicle frame, guiding arm;Support includes two side walls, and the rear side between two side walls forms an opening, and the one end of guiding arm is inserted into the two side walls between support via the opening;Between two side walls, a rotating shaft is fixed, and the one end of guiding arm is provided with the mounting pipe located at the periphery of rotating shaft, and an annular rubber sleeve is arranged between mounting pipe and rotating shaft, and the inner edge surface of rubber sleeve is tightly attached to the outer circumferential surface of rotating shaft, and the outer edge surface is tightly attached to the inner surface of mounting pipe.The utility model can avoid rigid impact between guiding arm and rotating shaft, prevent the deformation of rotating shaft on support due to rigid impact, and ensure that air suspension can work normally.

The present application belongs to the technical field of compressor, disclose a kind of air hole design method of air-supplying automobile suspension system air piston compressor, comprising the following steps: height design of air hole;Air hole diameter design, air hole number design and air hole center line section shape design.The height design step of the air hole, the height design of air hole meets the requirement of minimum power consumption per air-supplying amount.The present application aims at the air-supplying demand of the compressor of automobile suspension system, designs a kind of high-efficiency air-supplying piston compressor for automobile suspension system;Compared with ordinary piston compressor, the air-supplying crankshaft screw integrated design compressor designed by the present application, through the optimization design of air hole, the compression efficiency is higher, and more energy-saving.Gas can be compressed to the required pressure in a shorter time, and the response speed of air suspension system is improved.

The embodiment of the utility model provides a front air suspension system and a vehicle. The system comprises two guide arms used for being connected with a frame; the two air bags are connected with the guide arms through brackets; and the two limiting assemblies are rotationally connected with the bracket, and the limiting assemblies are further used for being connected with the frame so as to limit the moving direction of the guide arm relative to the frame, so that the effects of reducing the risk of abnormal eccentric wear of tires and prolonging the service life of the front air suspension are achieved.