2142 results about "Air suspension" patented technology

The embodiment of the invention provides an air supply system and an air supply method of an air suspension. The air supply system of the air suspension comprises an air storage tank, a plurality of air springs, an air supply valve body unit, a dryer, a heating element, an electronic control unit and a humidity sensor. The air storage tank is used for storing compressed air; the air spring is used for inputting high-pressure gas to each wheel of the vehicle; the air supply valve body unit comprises a reversing valve; the reversing valve is arranged on an air channel, so that the air supply system is driven to be switched between the air suction mode and the reverse blowing mode through reversing of the reversing valve; the cavity of the dryer is communicated with the air supply valve body unit through an air channel; the heating element is arranged in a cavity of the dryer, the humidity sensor is arranged on the air channel, and the humidity sensor corresponds to the electronic control unit in a signal mode. Therefore, the air supply system of the air suspension has the advantage that the regeneration efficiency of the dryer is improved.

The invention provides an air spring performance degradation characterization method and system, and the method comprises the steps: obtaining a spring stiffness physical parameter generated in a performance degradation test process of an air spring based on an air suspension test system; inputting the spring stiffness physical parameters into an air spring performance degradation model to obtain dynamic stiffness performance degradation data; the dynamic stiffness performance degradation data comprises dynamic stiffness frequency correlation data and dynamic stiffness amplitude correlation data; the air spring performance degradation model comprises a dynamic stiffness frequency correlation model and a dynamic stiffness amplitude correlation model, and the dynamic stiffness frequency correlation model is used for obtaining stiffness frequency correlation data according to air spring internal gas pressure change data in spring stiffness physical parameters; the dynamic stiffness amplitude correlation model is used for obtaining dynamic stiffness amplitude correlation data according to air bag degradation data in the spring stiffness physical parameters. According to the method, more accurate air spring performance prediction and degradation analysis results can be provided.

The invention relates to an air blower based on magnetic and gas combination axial force balance and a control method of the air blower, and belongs to the technical field of axial force regulation and control of air blowers. An axial air suspension bearing and an axial magnetic bearing are arranged in a main machine of the air blower, the axial magnetic bearing is connected with a magnetic bearing controller, and the magnetic bearing controller controls the axial position of a rotor by controlling the current of the axial magnetic bearing; an axial displacement sensor and a radial displacement sensor are arranged to detect the displacement of the rotor; and the main controller is used for controlling the starting and stopping of the axial magnetic bearing and the main machine based on the axial displacement and the radial displacement of the rotor, and sending out early warning. According to the magnetic and air combined axial force balance device, the axial magnetic bearing is used for providing active control force, the air bearing is used for providing passive support, the stability and reliability of a system are improved, and an important protection effect is achieved on core parts of an air blower.

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 belongs to the technical field of thermal barrier coatings, and provides an artificial preparation method of multi-scale aero-engine environment sediment particles. The preparation method comprises the following steps: grinding CMAS original powder into mixture powder; calculating the mass of the required mixture powder according to the powder density of the CMAS original powder and the particle size of the target sediment particles; weighing the mixture powder, and pressing the mixture powder into sheets; in an air suspension furnace, tabletting and melting the mixture powder into balls by adopting a laser; and rapidly cooling to normal temperature to obtain the target sediment particles with the target particle size. The melting process of the CMAS powder is greatly improved, the gas suspension furnace and the laser are used for heating, single CMAS particles with the designed size can be obtained in a short time, the preparation time is shortened, and the preparation cost is effectively reduced.

The invention discloses an air suspension and ESC coordination control method and system based on deep learning, and belongs to the field of automobile braking, and the method comprises the following steps: S1, collecting historical data of vehicle driving, generating extreme working condition data by using vehicle dynamics simulation software, and forming a training data set; s2, constructing a double-branch fusion control model, and training the double-branch fusion control model; s3, vehicle state parameters and road surface condition data are collected in real time; s4, after feature extraction and fusion are carried out on the processed multi-source parameters, the trained double-branch fusion control model is input, and an optimal control strategy is generated; and S5, the ESC executes the optimal control strategy and collects vehicle state data after execution to form a control closed loop. By the adoption of the air suspension and ESC coordinated control method and system based on deep learning, the deep learning and the vehicle dynamics model are combined, the vehicle motion state can be monitored in real time, accurate control is conducted according to real-time data, and the potential out-of-control situation is avoided.

Provided is a configuration capable of supplying compressed air to a pneumatic apparatus while supplying electric power to an electric vehicle. A connector is connected to a vehicle provided with an air suspension device to which compressed air is supplied, and supplies electric power supplied from an electric power supply unit to the vehicle. The connector includes a charging connection portion that supplies electric power to the vehicle, and an air supply connection portion that supplies compressed air to the air suspension device.

Disclosed in the present invention is a laser cutting non-contact surface dust removal apparatus, which comprises an electrode sheet upper dust removal system, an electrode sheet lower dust removal and supporting system, and a guide passing roller, the guide passing roller being located between the electrode sheet upper dust removal system and the electrode sheet lower dust removal and supporting system. A porous air suspension plate and an air blowing connector are provided in the electrode sheet lower dust removal and supporting system, compressed air from the air blowing connector passing through the porous air suspension plate to form an air damping; the electrode sheet upper dust removal system comprises an air blowing assembly and a dust removal cavity assembly, an airflow blown out of the air blowing assembly being balanced with the air damping formed by the porous air suspension plate. In the present invention, the porous air suspension plate and the air blowing connector are arranged below an electrode sheet, such that the compressed air from the air blowing connector passes through the porous air suspension plate to form the air damping, so as to achieve the effects of supporting and buffering on the electrode sheet; the balance between the air blown above the electrode sheet and the suspension force under the electrode sheet not only achieves a purpose of dust removal, but also prevents out-of-focus of a laser caused by shaking of the electrode sheet, which affects the cutting quality of the electrode sheet.

According to the differential lock automatic control method and system and the vehicle, whether the vehicle is in a special road condition or not is recognized through navigation and a camera, a vehicle suspension jumping signal is obtained through an air suspension sensor, and the vehicle wheel speed difference, the vehicle speed, the front-back inclination angle and the left-right inclination angle are combined; if it is judged that the vehicle is located on the specified special road surface, the vehicle speed is lower than the set threshold value and the left and right wheel speed difference is smaller than the set threshold value, the differential lock automatically intervenes, if it is judged that the vehicle leaves the specified special road surface or the vehicle speed exceeds the preset value, the differential lock automatically exits, intelligent differential lock control is achieved, and the driving experience of customers is effectively improved.

The invention relates to the technical field of forging, in particular to an air suspension aluminum cylinder assembly forging process which comprises the steps that a pre-forging blank is placed in a forging die and pre-forged, a forging face is divided into a plurality of annular areas, and point cloud data of a plurality of points in each annular area in the pre-forging process are obtained in real time; stopping pre-forging and pressing based on the change condition of the characteristic coordinate values, screening a raised characterization area, judging whether the shape change of the pre-forging blank is abnormal or not, forging the pre-forging blank with the abnormal shape change in a forging compensation manner to obtain a forging part, annealing the forging part to obtain an aluminum cylinder forging part, and further, performing pre-forging and pressing on the aluminum cylinder forging part to obtain the aluminum cylinder forging part. The forming shape stability of the special-shaped forged piece is analyzed according to the local deformation state of the material in the forging process, the forging mode is adaptively adjusted according to the material state difference, and the shape and size precision and the performance consistency of the special-shaped aluminum cylinder forged piece of the air suspension are improved.

The invention discloses an air suspension self-adaptive adjustment method and system based on road condition recognition and prediction, and belongs to the field of air suspension adjustment. S1, parameters of an air suspension are initialized; s2, predicting road condition information of a road to be driven in real time; meanwhile, identifying the road condition information of the current driving road; s3, adjusting the height, rigidity and damping of the air suspension in combination with the predicted road condition information of the road to be driven and the identified road condition information of the current driving road; and S4, circularly executing the steps S2 to S3. By the adoption of the air suspension self-adaptive adjusting method and system based on road condition recognition and prediction, the height, rigidity and damping of the air suspension can be automatically adjusted according to the current road condition and the road condition of the road to be driven, the driving comfort and the driving stability of the vehicle are improved, and therefore the vehicle and passengers are protected; the system has the advantages of being high in universality and flexibility, low in maintenance cost, high in response speed, high in driving comfort and stability and the like.

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 the technical field of suspension systems of vehicles, in particular to an air suspension system of a vehicle. The air suspension system comprises a guide arm assembly, the guide arm assembly is provided with an upper plate and a lower plate which are arranged in a stacked mode, and the upper plate is shorter than the lower plate and extends to the middle of the lower plate from one end of the lower plate; the air spring is arranged at the other end of the lower plate; wherein the two guide arm assemblies are symmetrically arranged at the two ends of the drive axle, a cross beam parallel to the drive axle is installed at the other end of the lower plate, and the air spring is fixed to the cross beam. According to the invention, one end of the guide arm assembly is composed of the upper plate and the lower plate, so that the guide arm assembly has the reliability of a plate spring suspension; the cross beam is arranged to connect the other ends of the two guide arm assemblies and fix the air spring on the cross beam, so that the air suspension system has the characteristic of variable rigidity, the weight of the air suspension system is reduced, the size of the air suspension system is reduced, and the air suspension system can be suitable for more types of vehicles.

The invention belongs to the technical field of automobile air suspension systems, and particularly relates to a drying mechanism of an air compression pump with a good dehumidification effect. A first molecular sieve is arranged in the first mounting space of the shell, and a second molecular sieve is arranged in the second mounting space of the shell; an air channel for communicating the first mounting space with the second mounting space is arranged in the shell; the shell is provided with a first air nozzle communicated with the air channel, and a throttling valve is installed at the first air nozzle. The shell is provided with a second air nozzle communicated with the first mounting space and a third air nozzle communicated with the second mounting space; the second air tap and the third air tap are both used for being connected with a compressed air outlet of an air compression pump; when the compressed air is dehumidified, the second air nozzle and the third air nozzle are used as air inlet nozzles, and the first air nozzle is used as an air outlet nozzle; when the first molecular sieve and the second molecular sieve are subjected to back flushing and moisture removal, the second air nozzle and the third air nozzle serve as air outlet nozzles, and the first air nozzle serves as an air inlet nozzle.

The invention provides a vehicle attitude control device and method, and relates to the technical field of vehicle control. The device comprises the steps that a brake-by-wire system collects the wheel speed of each wheel of a vehicle and obtains attitude data, deviation calculation is conducted on the attitude data and the wheel speeds, an attitude deviation value is obtained, and the vehicle state of the vehicle is matched from a stability degree table according to the attitude deviation value; the air suspension system collects suspension height signals of all wheels of the vehicle, when the brake-by-wire system judges that the state of the vehicle is an unstable state, the suspension height signals of all the wheels are adjusted according to adjusting rules, and height adjusting signals corresponding to all the wheels are obtained; the air suspension system adjusts the height of the air spring of the corresponding wheel according to the plurality of height adjustment signals. The vehicle is jointly controlled through the brake-by-wire system and the air suspension system, the height of an air spring of the vehicle is adjusted, the vehicle is prevented from rolling over due to the unstable gravity center, and the safety of the vehicle is improved.

The invention discloses a vehicle-mounted oxygen generation system, a vehicle system, a vehicle-mounted oxygen generation control system and a control method.The vehicle-mounted oxygen generation system comprises a shell, a molecular sieve and an oxygen storage tank, and the molecular sieve and the oxygen storage tank are arranged in the shell; the air inlet is configured to be connected with an air suspension air tank in a vehicle air suspension system outside the shell so as to provide air for the molecular sieve; one end of the air pipe is communicated with an outlet of the oxygen storage tank, the other end of the air pipe is configured to be communicated with a vehicle cab outside the shell, and a controllable electronic valve is arranged on the outlet of the oxygen storage tank or the air pipe. New configuration optimization is made based on an air compressor and an air storage tank of an existing vehicle air suspension system, the oxygen generation function is achieved on the basis that the original air suspension function of the system is protected, and the adverse effects on the available space and the loading capacity of a vehicle are greatly reduced.

The utility model discloses a rigidity valve, which is used in the technical field of automobile air suspension systems, and structurally comprises a valve body and a valve seat connected on the valve body, the valve body comprises a valve core and an electromagnetic driving mechanism for driving the valve core to move axially, the valve seat is provided with a valve cavity and a valve port, the valve core is in clearance fit in the valve cavity, and the valve core is in clearance fit with the valve port. The valve body is used for opening or closing the valve port; the rigidity valve further comprises a diaphragm made of flexible materials, the diaphragm is fixedly connected to the valve element and connected with the valve element in a sealed mode, and the outer edge of the diaphragm is connected with the valve cavity in a sealed mode and used for preventing media in the valve cavity from entering the side, away from the valve port, of the diaphragm. The rigidity valve is good in sealing performance, long in service life and low in energy consumption, and the reliability requirement for closing or opening the valve port of the valve element can be met.

The invention is suitable for the technical field of air suspension blowers, and provides an anti-explosion air suspension blower based on positive pressure sealing, the anti-explosion air suspension blower comprises an impeller, a volute, a motor and a carbon ring seal, the impeller is installed in the center of the volute and installed on a rotor, and an air inlet channel and an exhaust channel which are communicated with a motor cavity are arranged on a motor shell; pure air or inert gas enters the motor cavity through the air inlet channel and then is exhausted out of the motor shell through the exhaust channel, and meanwhile it is guaranteed that the pressure in the motor cavity is always higher than the external pressure. The carbon ring seal is arranged between the impeller and the motor, pure air or inert gas is input into the carbon ring seal, and meanwhile it is guaranteed that the pressure in the carbon ring seal is always higher than the pressure of the joint of the impeller and the motor, so that hazardous gas can be prevented from entering the air suspension motor through the cooling gas inlet in the air suspension air blower, and the service life of the air suspension motor is prolonged. Meanwhile, dangerous gas can be prevented from entering the air suspension motor through the joint of the impeller and the motor, the air suspension blower is further prevented from exploding, and the safety is improved.

The utility model relates to a shell assembly, a gas compression and supply device, an air suspension system and a vehicle, the shell assembly is used for the gas compression device and comprises a shell and a heat dissipation flow channel, the shell is provided with a containing cavity used for containing a piston mechanism, and the containing cavity is divided into a first-stage compression cavity and a second-stage compression cavity through the piston mechanism; the heat dissipation flow channel is communicated with the first-stage compression cavity and the second-stage compression cavity, and at least part of the heat dissipation flow channel is formed in the shell so that heat dissipation can be conducted on gas flowing through the heat dissipation flow channel through the heat dissipation flow channel, the internal temperature of the gas compression device can be reduced, the performance of the gas compression device can be optimized, and the gas compression device has the advantages of being simple in structure and convenient to install and manufacture.

The invention relates to the technical field of vehicles, and particularly discloses a combined type air suspension system and a vehicle, the combined type air suspension system comprises a vehicle frame, a plate spring assembly, a connecting shaft, a longitudinal thrust assembly and a gas elastic piece, the plate spring assembly comprises a plate spring body, a front support and a rear support, and the plate spring body is provided with a front spring eye; the front spring eye is rotatably arranged on the front support, a plurality of connecting positions are arranged on the front support, and the plate spring body is provided with a rear spring eye which is rotatably arranged on the rear support. The connecting shaft is arranged on the plate spring body, the longitudinal thrust assembly comprises a longitudinal thrust rod and a base, the base is arranged at the connecting position of the plate spring body and the connecting shaft, one end of the longitudinal thrust rod is rotationally connected with the base, and the other end of the longitudinal thrust rod can be selectively rotationally connected with or separated from any connecting position. The gas elastic piece is arranged between the base and the frame, so that the motion trail of the connecting shaft can be finely adjusted, the guiding characteristic is improved, and the transverse vibration of the whole system is reduced.

The embodiment of the invention provides an air supply system and an air supply method of an air suspension with multiple working modes. Wherein the air supply system comprises an air storage tank, a plurality of air springs, an air supply valve body group, a temperature pressure sensor, a vacuum suction valve pipeline, an air inlet valve pipeline and a negative pressure pipeline. The air supply valve body group is provided with a first ventilation port, a second ventilation port and a plurality of third ventilation ports, the second ventilation port is communicated with the air storage tank, and the plurality of third ventilation ports are communicated with the plurality of air springs in a one-to-one correspondence manner; the vacuum suction valve pipeline comprises a vacuum generator, the air inlet valve pipeline comprises a dryer, a first ventilation port of the air supply valve set is communicated with the outside through the vacuum suction valve pipeline and the air inlet valve pipeline which are arranged in parallel, and the vacuum generator is selectively communicated with the dryer through a negative pressure pipeline. Therefore, the air supply system provided by the embodiment of the invention has the advantages of reducing the regeneration temperature of the drying agent and prolonging the service life of the electric appliance element.

The invention provides a test method, system and device for a controller used by an air suspension and a storage medium. The method comprises the steps that a test operation instruction is acquired; transmitting the test operation instruction to a whole vehicle simulation model and a port model of the cabinet; monitoring a whole vehicle simulation signal through parameter changes of the whole vehicle simulation model and the port model; reflecting the whole vehicle simulation signal to a driving simulator; performing component and board card processing on the whole vehicle analog signal in the cabinet, and transmitting the processed whole vehicle analog signal to the controller to generate a control signal; and transmitting the control signal to an assembly and a board card in the cabinet, and performing real-time control on the whole vehicle simulation model and the port model to complete the test. The invention provides a hardware-in-the-loop test verification method and system for a controller used by an air suspension, which can replace the function of a part of a whole vehicle and effectively shorten the development period and the test period of a semi-active double-cavity air suspension controller.

The invention relates to the technical field of air supply unit testing of an air suspension, in particular to air supply unit testing equipment and a testing system of the air suspension, and the testing equipment comprises a high-low temperature damp-heat alternating testing box, four simulation air spring load devices, an industrial personal computer and a first testing air path; the simulated air spring load device is used for simulating the load of an automobile body on the air spring; the gas supply unit is used for testing in a test room of the high-low temperature damp-heat alternating test box, and the high-low temperature damp-heat alternating test box, the gas supply unit and the first test gas path are all controlled by the industrial personal computer; the first test gas circuit is used for testing the gas supply unit. According to the invention, the air supply unit to be tested of the air suspension is tested in a simulated extreme environment, and the weight is increased or decreased to simulate the load of the vehicle body on the air spring, so that the core capabilities of pressure-flow control, environmental adaptability, reliability and the like of the air supply unit are effectively and systematically verified. The verification of the air supply unit is directly related to the safety, comfort and durability of the automobile.

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 an air flow control method, device and equipment of an air suspension system. The method comprises the following steps: detecting gas data of a preset air suspension system; according to the gas data of the air suspension system, the lifting performance state of the air suspension system is determined; and under the condition that the lifting performance state of the air suspension system is abnormal, air flow control is executed on the air suspension system according to the lifting performance state of the air suspension system. According to the embodiment of the invention, the air quantity in the air suspension system can be intelligently controlled, and especially in the vehicle driving process, when the lifting performance state is abnormal, the air quantity control can be dynamically executed, so that the air quantity in the air suspension system is normal, and the defect that the air quantity is not normal in the vehicle driving process is overcome. The problem that an air quantity control scheme for the air suspension system is lacked is solved, and the driving safety and comfort are improved.

The invention relates to a height adjustment precision calibration method based on a steady-state air suspension system, which is characterized in that the method is static (not influenced by external force), and the pressure difference between the input end and the output end corresponding to the height of a certain air spring is constant (the input end is an air pump and an air storage tank during ascending, the output end is the air spring, and the input end and the output end are opposite during descending); when the sensor rises or falls to a certain target height, the overshoot is constant, and the descending adjustment threshold calibration process of the certain target height comprises the following steps: (1) rising and falling to Hi for many times, recording the height values hi drop 1, hi drop 2, hi drop 3,..., hi drop n (n can be determined by a tester, for example, n = 10) of the sensor after the adjustment is finished and the height is stable, and for a multi-air-spring system, determining the height of the sensor according to the height of the sensor; the absolute values of a plurality of height sensors can be calculated to serve as height adjustment results, a simpler model and a calibration method with higher operability are adopted, and the precision control over height adjustment is more direct and effective.

The invention belongs to the technical field of air suspension air supply, and particularly discloses an air suspension closed type air supply system, a control method and a vehicle. An air suspension closed air supply system includes an air supply assembly, a first air reservoir, a second air reservoir, and an air spring. The first air storage device and the second air storage device are both used for storing compressed air and connected with the air supply assembly. The air supply assembly inflates the first air storage device or the second air storage device, the first air storage device inflates the second air storage device through the air supply assembly, or the second air storage device inflates the first air storage device through the air supply assembly. The air spring is connected with the air supply assembly so that the air spring can exhaust air to the first air storage device and / or the second air storage device through the air supply assembly or the first air storage device and / or the second air storage device can inflate the air spring through the air supply assembly. According to the invention, the inflating and deflating speed can be increased.

The invention relates to a vehicle underpinning monitoring and lifting method based on an air suspension system, and the method comprises the following specific steps: S1, judging the motion state of a vehicle according to the actual gear state and the vehicle speed of the vehicle, and judging that the vehicle is in a static state if the actual gear of the vehicle is a P gear and the vehicle speed is smaller than a preset threshold value; s2, recognizing the motion state of the vehicle, judging whether the vehicle is in a static state or not, whether a received height gear is lowered or not, whether an air suspension needs height lowering adjustment or not, whether a motor and an electromagnetic valve work normally or not, and whether there is no fault or overheating or not, if yes, entering the next step, otherwise, directly ending, and if not, entering the next step; the method has the characteristics that the stability and robustness of the system are improved, the misjudgment phenomenon is avoided, and the vehicle safety is ensured.

The invention discloses a heavy air suspension truck anti-roll control method based on an extended zero moment point, and the method comprises the following steps: S1, building a virtual prototype model of a heavy truck, and obtaining a centroid pitch angle, a roll angle, a yaw angle and accelerations in X, Y and Z directions under a vehicle driving condition in real time; s2, based on an extended zero moment point theory, constructing a vehicle body attitude evaluation index based on extended zero moment point coordinates; s3, calculating a vehicle body posture evaluation index in real time under the vehicle driving condition, and judging whether the vehicle rolls or not; and S4, on the basis of a layered architecture control strategy, the upper layer calculates air spring force needed by anti-roll based on fuzzy PID, the lower layer inflates and deflates the air spring to output the needed air spring force, and the posture of the vehicle body is balanced. According to the method, the stability of the vehicle body can be evaluated in real time through the extended zero moment point theory, the roll risk is accurately judged, anti-roll measures are taken, and the driving stability is remarkably improved.

The invention discloses a laser cutting air suspension device which comprises an air suspension platform, a magnetic field generation unit, a suspension positioning unit and a feedback and control system. The suspension positioning unit comprises a restraining piece and a permanent magnet, the permanent magnet is fixedly connected to the suspension positioning unit, the air suspension platform is used for enabling the suspension positioning unit and a workpiece fixed by the suspension positioning unit to suspend, and the magnetic field generating unit is used for generating a control magnetic field interacting with the permanent magnet. The feedback and control system comprises a sensor used for monitoring the posture of the suspension positioning unit and / or the workpiece and a controller used for controlling the magnetic field generation unit. According to the embodiment of the invention, a mode of combining gas suspension and magnetic field driving is utilized, so that the thrust coil interacts with the permanent magnet in the suspension positioning unit, additional control force is generated, the influence caused by gas flow imbalance is effectively resisted, non-contact supporting and positioning of the workpiece are realized, and the workpiece is ensured to be stable under gas flow fluctuation or other external disturbance. And the stability of the suspension state can still be maintained.