262 results about "Wheel load" patented technology

The invention provides a vehicle anti-skid control method, device and system and a vehicle. According to at least one driving wheel of the vehicle, the chassis wheel speed, the actual wheel speed, the wheel end actual torque, the adhesion coefficient, the total wheel load, the target slip rate, the wheel radius and the vehicle speed are obtained; a feedforward control torque is determined according to an attachment coefficient, a total wheel load and a wheel radius, a wheel speed deviation is determined according to a target slip rate, a chassis wheel speed and an actual wheel speed, a torque deviation is adjusted through a vehicle speed, the attachment coefficient and the wheel speed deviation to obtain a feedback control torque, and the feedback control torque and the attachment coefficient are superposed to serve as an output torque for vehicle anti-skid control. Dynamic wheel load changes and wheel load changes caused by the vehicle on the ramp road surface are considered, the total wheel load is estimated in real time, feed-forward control is introduced to obtain the feed-forward control torque, feedback control is compensated, and the stability and accuracy of anti-skid control are enhanced when the ramp road surface and the loads change.

The invention discloses a method for simulating bottom bending tensile stress of an airport rigid pavement slab under the action of aircraft wheel loads. The method comprises the following steps: establishing an airport rigid pavement three-dimensional refined finite element model and an airport rigid pavement two-dimensional simplified finite element model; selecting aircraft wheel sliding load of the aircraft type main landing gear; obtaining an equivalent airplane wheel sliding load; obtaining an equivalent airplane wheel sliding load calculation formula under the random transverse action position of the airplane wheel; and obtaining the bottom bending-tensile stress value of the pavement slab under the airplane wheel sliding load. According to the method, by establishing the rigid pavement two-dimensional simplified finite element analysis model, rapid prediction of the airport rigid pavement slab bottom stress response under the aircraft wheel load effect is achieved. According to the method, the bending-tensile stress of the slab bottom is quickly and accurately calculated according to different pavement structure parameters and the transverse action position of the airplane wheel. The method effectively overcomes the defects of complex modeling, high calculation cost and the like of traditional rigid pavement refined simulation, has the characteristics of simplicity and convenience in modeling and quickness in calculation, and remarkably improves the airport engineering design and analysis efficiency.

The invention relates to the technical field of soil detection, and particularly discloses a soil detection method based on a freeze thawing-unsaturated dynamic load hollow cylinder torsional shear apparatus, which comprises the following steps: respectively applying a vertical dynamic load, a torsional shear dynamic load and confining pressure through a vertical servo motor, a torsional shear servo motor and a triaxial pressure chamber, and simulating the stress state of a roadbed under the action of a dynamic wheel load; the unsaturated state of the sample is controlled through an axis translation method for controlling pore air pressure and pore water pressure, and the hydraulic state of the roadbed in the actual situation is simulated; the temperature of the sample is further controlled through a low-temperature water bath connected with the upper bottom surface and the lower bottom surface of the sample, and the temperature gradient in the roadbed freezing and thawing process is simulated; therefore, the instrument can introduce the influence of freezing and thawing and unsaturation while simulating the traffic dynamic load, can more accurately reflect the mechanical response of the cold region roadbed under the coupling action of freezing and thawing-unsaturation-traffic load, and provides a more accurate and more scientific basis for the performance evaluation of the cold region roadbed.

The invention discloses a method for aircraft thrust imbalance warning and protection. The method comprises the following steps: acquiring thrust rod position angle signals and wheel load state signals of a plurality of engines after an aircraft lands and is grounded; determining whether the thrust states of the plurality of engines are consistent or not based on the thrust rod position angle signal and the wheel load state signal, wherein the thrust states of the plurality of engines comprise a positive thrust state and a negative thrust state; in response to the fact that one or more of the multiple engines are inconsistent with the remaining engine thrust state of the multiple engines, a warning instruction is sent out; and the reverse thrust cover corresponding to the engine in the negative thrust state is locked. The invention further provides a system for aircraft thrust imbalance warning and protection. By means of the method and device, the unbalanced thrust state of the aircraft can be prevented after the aircraft lands, an alarm is given to operation of a pilot, protection is provided, and the safety of the aircraft is guaranteed.

The invention provides a heavy-duty truck vehicle-mounted safety monitoring method and device, and the method comprises the steps: obtaining the original monitoring data of a wheel-rail force through a wheel-rail force monitoring module which is installed on an axle and has a low power consumption characteristic, and carrying out the edge calculation of the original monitoring data, and obtaining a wheel load shedding rate, a derailment coefficient and a wheel axle transverse force; the framework acceleration and the bearing temperature are obtained through the low-power-consumption vibration acceleration sensing module and the bearing temperature sensing module; performing multi-modal fusion on each index to obtain a multi-modal operation state representation vector; obtaining a dynamic threshold value of each index based on an enhanced feature vector and a multi-modal operation state representation vector obtained by an offline self-learning model; and giving current situation analysis and trend analysis of safety monitoring based on a comparison result of each index and a dynamic threshold value. According to the invention, the limitation of independent analysis of single sensor data in the prior art is overcome, the dynamic adjustment of the safety threshold is realized, and the accuracy and reliability of safety monitoring are improved.

The invention provides a railway minor radius curve asymmetric steel rail profile robustness optimization design method, and relates to the technical field of steel rail profile optimization, and the method comprises the steps: obtaining a plurality of groups of random samples; constructing a coupling dynamics simulation model of the vehicle-rail system according to the random sample and outputting key indexes, wherein the key indexes comprise wheel-rail force, a derailment coefficient, a wheel load shedding rate and a steel rail abrasion loss; calculating according to the key indexes and a preset abrasion model to obtain accumulated abrasion depth data of the steel rail under different random variable combinations; constructing a dynamic response prediction model according to the random sample, the key index and the steel rail accumulated abrasion depth data; taking the random sample as an input value of the dynamic response prediction model to obtain a probability density distribution result, and performing sensitivity analysis to obtain a sensitive variable; and generating a Pareto frontier solution according to the sensitive variable and a preset design variable, and fitting to obtain a steel rail profile optimization design scheme. According to the method, the steel rail profile optimization solution can adapt to a complex and random operation environment.

The invention relates to a towed agricultural working machine (10) for tilling the soil and / or for spreading agricultural material, comprising a frame structure (16) which has a pulling device (18) on a front side and a chassis (20) on a rear side, wherein the pulling device (18) is configured to absorb an operating tractive force (FZ) of a tractor in the direction of travel (VR) and / or to transfer an operating support load (FS) of the working machine (10) to the tractor, wherein the chassis (20) has at least two support devices (22) which are provided for transferring an operating wheel load (FR) of the working machine (10) to the ground, and wherein a coupling device (24) is arranged on the frame structure (16) on the rear side, on which coupling device a soil tilling and / or sowing device (12; 14) having a support frame (26) is received.To optimise the weight distribution, the working machine (10) is characterised by a support wheel device (40) arranged at the rear of the soil tillage and / or sowing device (12; 14). The invention also relates to a method for shifting weight on a towed agricultural working machine (10).

The invention discloses an unmanned aerial vehicle braking system onboard ground test device and method, and the device is constructed through a computer, an electronic circuit and a software system, and can achieve the detection of a common wheel speed sensor output signal, an undercarriage folding and unfolding state signal and a wheel load state signal. Accurate and reliable simulation of working environment states of the unmanned aerial vehicle brake system, such as brake instructions and data communication, is realized. The test device is simple in structure, simple and convenient in method operation, low in energy consumption and comprehensive in functional performance, can replace an existing system device constructed by complex equipment such as an aircraft wheel driver composed of a high-power motor and the like, an unmanned aerial vehicle ground station, a wheel load simulator (WOW) and the like, and realizes high working efficiency, high reliability and the like in an unmanned aerial vehicle brake system on-board ground test. The quality and the safety are good, the energy consumption is low, and the personnel guarantee requirement is low.

The invention relates to the technical field of vehicle testing, in particular to a high-integration novel driving unit testing method, electronic equipment and a storage medium. The capability test system comprises a measurement module, a control module, a fixed support, a road load simulation platform arranged on the fixed support, a wheel load dynamic loading mechanism and an electrical system, and the method comprises the following steps: determining control parameters, simulation parameters, loading parameters and electrical parameters according to current test requirements, respectively controlling the road load simulation platform, the wheel load dynamic loading mechanism and the electrical system to be in corresponding states, sending control parameters to the to-be-tested high-integration novel driving unit, and measuring current test parameters of the to-be-tested high-integration novel driving unit; and obtaining a function test result and / or a performance test result of the to-be-tested high-integration novel driving unit. Therefore, the problems of high cost, high danger coefficient, long period and the like of the existing test method are solved.

According to the aircraft front wheel turning control valve fault detection method, a fault detection program resides in a turning control unit, and the fault detection program comprises a fault detection condition judgment module and a fault detection instruction sending module. The fault detection condition judgment module is used for receiving a pressure signal of a hydraulic system, a wheel load signal of an undercarriage folding and unfolding system, a speed signal of a brake system, a turning release signal of a turning release switch and a fault signal of a front wheel turning system; the fault detection instruction sending module sends a turn-off instruction to a turn-off valve of the turning control valve and sends a turning instruction to a servo valve of the turning control valve, if the servo valve cannot control the action of a turning mechanism and enables front wheels not to deflect, it is indicated that the turn-off valve is in a normal working state, and if the servo valve controls the action of the turning mechanism and enables the front wheels to deflect, it is indicated that the turn-off valve is in a normal working state. And indicating that the shut-off valve is in a hidden fault state.

The invention discloses an X-type control method for intelligently distributing torque and a chassis system. The X-type control method comprises the steps that a left front hydraulic channel, a right rear hydraulic channel and a right front hydraulic channel and a left rear hydraulic channel are built; the sensor obtains parameters such as wheel rotating speed and load; the control module combines slip rate, longitudinal force (calculated according to tire rigidity and the like) and unscented Kalman filtering to estimate an adhesion coefficient, calculates hydraulic pressure and generates a driving signal; the hydraulic valve adjusts the torque to adapt to straight lines (distributed according to load transfer), steering (insufficient / excessive deviation correction steering) and unbalanced road working conditions, and energy consumption optimization is further included. The system comprises a sensing module, a control decision-making module and the like, normal driving and braking are still guaranteed when an X-type layout single channel breaks down, natural yaw moment exists, and the problems that in the braking or driving process of an existing vehicle chassis, moment distribution is not uniform, and response to single-wheel loads and road surface attachment changes is insufficient are solved.

The invention discloses a driving anti-skid control method of an electric vehicle, the electric vehicle and a storage medium, and belongs to the field of electric vehicle control. The method comprises the steps that when the electric vehicle is in a driving state, the actual rotating speed of a motor of the electric vehicle is obtained; under the condition that the actual rotating speed is larger than the target rotating speed, an initial anti-slip control stage is started, a first motor torque control signal is generated through the active disturbance rejection controller according to the target rotating speed and the actual rotating speed, and the first motor torque control signal is used for controlling the motor torque; and under the condition of entering the continuous anti-skid control stage, real-time wheel load torque is obtained, a second motor torque control signal is generated through the active disturbance rejection controller according to the target rotating speed, the actual rotating speed and the real-time wheel load, and the second motor torque control signal is used for controlling the motor torque. By dividing the anti-skid control stages and selecting different anti-skid control methods, the wheel slippage can be quickly and stably controlled, and the driving safety and comfort are improved.

The invention provides a bogie structure suitable for a severe environment and an air rail system.The bogie structure comprises a bogie, the lower end of the bogie is used for being hinged to a vehicle body, a side rolling stop is arranged on the bogie and used for limiting and buffering the side rolling angle of the vehicle body, and a motor frame is arranged above the bogie; the motor frame is vertically and movably connected with the bogie, an elastic vertical stopper is arranged between the bogie and the motor frame, the acting force of the vehicle body on the side rolling stopper is transmitted to the motor frame through the vertical stopper, positioning wheels are arranged at the two ends of the motor frame, the positioning wheels are used for abutting against a track beam, and the positioning wheels are used for transmitting the acting force on the motor frame to the track beam. The side rolling motion of a vehicle body is released, the side wind moment is balanced through the vehicle gravitational moment, the wheel load shedding rate of the bogie is reduced, meanwhile, the side rolling backstop, the vertical backstop and the positioning wheels are arranged, the side rolling angle is limited, the bogie can be prevented from overturning, and the structural reliability is guaranteed.

The utility model provides a bogie structure and a sky rail system suitable for severe environments, the bogie structure comprises a bogie, the lower end of the bogie is used for being hinged with a vehicle body, the bogie is provided with a side rolling stopper, the side rolling stopper is used for limiting and buffering the side rolling angle of the vehicle body, and a motor frame is arranged above the bogie. The motor frame is vertically and movably connected with the bogie, an elastic vertical stopper is arranged between the bogie and the motor frame, the acting force of the vehicle body on the side rolling stopper is transmitted to the motor frame through the vertical stopper, positioning wheels are arranged at the two ends of the motor frame, the positioning wheels are used for abutting against a track beam, and the positioning wheels are used for transmitting the acting force on the motor frame to the track beam. The side rolling motion of a vehicle body is released, the side wind moment is balanced through the gravitational moment of the vehicle, the wheel load shedding rate of the bogie is reduced, meanwhile, the side rolling backstops, the vertical backstops and the positioning wheels are arranged, the side rolling angle is limited, the bogie can be prevented from overturning, and the structural reliability is guaranteed.

The application relates to the field of automobile intelligent chassis testing, in particular to a kind of angle module steering performance test method.The test method comprises: according to preset speed, preset steering angle, preset vertical wheel load, preset road adhesion coefficient, determine steering basic response and control precision comprehensive test condition, control test bench to execute steering basic response and control precision comprehensive test;Steering basic response and control precision comprehensive test condition includes step input response test condition, hysteresis and non-linear characteristic evaluation condition, dynamic response characteristic evaluation condition, return torque and residual angle test condition, steering angle precision and tracking error test condition;According to preset speed and preset vertical wheel load, determine steering-wheel load coupling performance test condition, control test bench to execute steering-wheel load coupling performance test.The application can standardize the steering performance of angle module, test each condition in full dimension, and accurately present the comprehensive steering performance of angle module in actual vehicle operating condition.

The utility model discloses an egg support type friction nanometer power generation pavement plate, the power generation principle of the plate is friction power generation and electrostatic induction coupling effect, current is generated through electron transfer generated by interaction between polar materials, and the purpose of pavement power generation is achieved. The plate at least comprises three structural layers, namely a compression-resistant protective layer, a friction nano power generation layer and a high-strength bearing layer from top to bottom, wherein the friction nano power generation layer is provided with a multi-layer egg support type insulating plate, a metal electrode layer, two friction surfaces which are attached to the friction nano power generation layer and have opposite polarities, an elastic support body and a rectifying circuit layer connected with the metal electrode layer. The utility model relates to a pavement plate with a function of collecting pavement vibration energy, which is arranged between a surface layer of a newly-built pavement and a structural layer or between structural layers of an existing pavement, and generates electric energy through a contact-separation friction process of a friction nanometer power generation layer under the action of vertical force and horizontal force generated by wheel load. And the application potential is wide.

This control device 6 comprises a uniform-speed synchronization control unit 63 for generating a synchronization correction input Fd for front-wheel and rear-wheel dynamometers so that a difference between front and rear speeds is eliminated, a load balance computation unit 62 for generating a front-wheel load balance correction input Ffil_f and a rear-wheel load balance correction input Ffil_r, a front-wheel torque current command generation unit 64f for generating a front-wheel torque current command on the basis of the inputs Ffil_f and Fd, and a rear-wheel torque current command generation unit 64r for generating a rear-wheel torque current command on the basis of the inputs Ffil_r and Fd. The load balance computation unit 62 causes the inputs Ffil_f and Ffil_r to change independently of one another, raises the input Ffil_f a rear-wheel drive force Fvr increases, and raises the input Ffil_r as a rear-wheel drive force Fvf increases.

The invention relates to an automobile gear combination switch control method integrated with a vehicle-mounted weighing function, and belongs to the technical field of automobile electronic control. The invention aims to solve the technical problems of high cost and complex wiring caused by single function of an existing gear controller and independent arrangement of a vehicle-mounted weighing system. The electronic gear shifting system comprises an electronic gear shifting module used for detecting the gear and the parking key state; the combined switch module is used for detecting on-off states of a windscreen wiper, light and the like; the vehicle-mounted weighing module is used for supplying power to the height sensors of the four wheels, receiving PWM signals of the height sensors and calculating the total weight of the vehicle, the load ratio of front and rear axles and the loads of the four wheels according to the calibration parameters and the height variation of the vehicle body; and the communication module is used for sending a gear shifting signal, a switching signal and a weighing signal through a CAN FD bus. The weighing function is integrated into the gear controller, the weighing precision is improved through inclination angle compensation, real-time display and overload reminding of load information are achieved, and the gear controller has the advantages of being high in integration level, low in cost and good in precision.

The invention belongs to the technical field of helicopter state recognition, and particularly relates to a multi-sensor fusion air-ground recognition method. A laser altimeter and an ultrasonic altimeter are mounted outside a left / right skin of a front belly of a helicopter body in a helicopter, and a laser altimeter and an ultrasonic altimeter are also mounted outside a left / right skin of a tail cant beam of the helicopter. Forming a left front laser altimeter / left front ultrasonic altimeter, a right front laser altimeter / right front ultrasonic altimeter, a left rear laser altimeter / left rear ultrasonic altimeter and a right rear laser altimeter / right rear ultrasonic altimeter; and according to the measured values of the laser altimeter and the ultrasonic altimeter, and the left front wheel load switch signal, the right front wheel load switch signal, the left rear wheel load switch signal and the right rear wheel load switch signal, the air-ground state identification of the helicopter is realized.

The invention relates to a driving wheel load adjustable AGV trolley, and relates to the technical field of AGVs, the AGV trolley comprises a chassis frame, a lifting mechanism, two sets of supporting wheels and a supporting device located between the two sets of supporting wheels, and the supporting device comprises a support arranged on the chassis frame through a damping assembly; the driving wheel is rotationally arranged on the bracket; the adjusting mechanism is used for adjusting the position of the bracket and adjusting the supporting force of the driving wheel on the ground. During no-load, the adjusting mechanism drives the driving wheels to move upwards to reduce the supporting force and increase the supporting force of the two sets of supporting wheels to the ground, during loading, the adjusting mechanism is started to drive the driving wheels to move downwards to increase the supporting force to the ground, and the lifting mechanism lifts the loaded object, so that the heavy object can be supported; and the supporting wheels can be supported on the ground in the no-load state, the risk that the supporting wheels are separated from the ground is reduced, and therefore the stability of the trolley in the moving process is improved.

The utility model relates to a crossing track plate with an anti-displacement effect, in particular to the technical field of anti-displacement of crossing track plates. A mounting frame is arranged on one side of the track plate; the mounting frame is arranged in a concave shape; a track is movably mounted in the groove of the mounting frame; a plurality of convex layers and buffer layers are integrally arranged on one side, far away from the mounting frame, of the track plate; wherein the buffer layers are arranged on two sides of the track plate; semicircular grooves facilitating installation of eccentric fasteners are formed in the two ends of the track plate. When the track plate is used, the side, provided with the convex layer and the buffer layer, of the track plate is installed on a roadbed in a matched mode, and therefore when wheel loads on a track are transmitted, the stability of the track plate and the uniformity of the wheel loads transmitted through the buffer layer can be effectively guaranteed; during installation, the installation frame and the track plate are fixedly installed through the bolts in the embedded bolt holes, the track is installed in the grooves of the installation frame, and therefore when the track is used, deviation of the track is reduced under the action of the grooves.

A field vehicle weighing device comprises a bearing plate, at least four hydraulic oil cylinders are arranged below the bearing plate, the upper ends of the hydraulic oil cylinders are fixedly connected with the bearing plate, the lower portions of the hydraulic oil cylinders are provided with hydraulic oil cylinder bases, a bearing plate parallel to the bearing plate is arranged above the bearing plate, and the bearing plates are fixedly connected through a supporting device. The bearing plate is provided with a plurality of protruding parts, the protruding parts are arranged in guide rails of the guide rail support in a sliding fit mode and can vertically move along the guide rail support, the lower portion of the guide rail support is provided with a guide rail support base, the guide rail support is provided with a graduated scale, and the bearing plate or the bearing plate is provided with a graduated scale pointer used in cooperation with the graduated scale. A wheel load measuring instrument is arranged on the upper surface of the bearing plate, and a bearing plate leveling mechanism is further arranged on the field vehicle weighing device.

The invention discloses an electric locomotive static balance adjustment scheme screening method, electronic equipment and a medium. The method comprises the following steps: acquiring wheel load data including wheel load deviation and axle load deviation; recording the difference value of the wheel load deviation and the axle load deviation before and after the adjustment of each wheel position of the locomotive as a corresponding influence value; predicting adjusted wheel load deviation and axle load deviation according to the influence value and the adjustment value; and screening an adjustment scheme according to the adjusted wheel load deviation and axle load deviation. Through calculation and estimation of the static balance adjustment result of the electric locomotive, whether the adjustment result meets the specification or not can be visually seen, the overhaul period of the electric locomotive can be effectively shortened, the service life and performance of key parts of the electric locomotive are prolonged, occupation of public resources such as a transfer platform and an operation station and labor force of operators is reduced, and the maintenance cost is reduced. And the maintenance and operation quality of the locomotive is ensured.

This invention discloses a platform for simulating the working conditions of a Torsen differential in a four-wheel drive system, relating to the field of automotive teaching aids technology. The platform includes: a platform frame; a four-wheel drive transmission simulation unit comprising a drive motor, a Torsen center differential driven by the drive motor, connected front and rear axle drive shafts, and four rotary output ends; a wheel load simulation unit for applying rotational resistance to the rotary output ends; a working condition preset and control unit for automatically controlling the four wheel load simulation units to apply preset resistance combinations corresponding to the working condition mode; a data display unit for real-time display of speed and torque data at the rotary output ends; and a differential lock actuator for achieving rigid connection and synchronous rotation of the front and rear axle drive shafts. The beneficial effect of this invention is that it transforms complex mechanical principles, systematic engineering logic, and cutting-edge automotive technology into intuitive and operable teaching practices, possessing significant promotional value and application prospects.

This invention provides a method for reconstructing continuous wheel-rail forces based on discrete fastener reaction forces, comprising the following steps: Step 1, establishing a wheel load distribution model; Step 2, establishing an algorithmic framework for the inversion method, by introducing a responsibility region and a local deconvolution strategy, mapping the discrete fastener reaction force FRF to the continuous wheel-rail force WRF. This invention effectively solves the problems of traditional onboard sensors' difficulty in long-term fixed-point monitoring of specific road sections, and the inability of existing ground discrete monitoring points to fully characterize the continuous wheel-rail interaction behavior. By constructing an inversion framework based on Gaussian load distribution using a "responsibility region + local deconvolution" approach, it fully utilizes the load transfer characteristics of the vehicle-track coupling system, achieving high-precision reconstruction of continuous wheel-rail forces using ground discrete fastener reaction force data. This eliminates the need for complex global iterative optimization and can accurately restore the dynamic characteristics of wheel-rail contact even with only a limited number of discrete measurement points.

The invention provides a wheel load estimation device and the like which can reduce the calculation load compared with the prior art when estimating the wheel load. According to one aspect of the present invention, there is provided a wheel load estimation device that estimates a wheel load applied to each wheel provided in a vehicle. The wheel load estimation device includes an acquisition unit, a calculation unit, and an estimation unit. The acquisition unit acquires a detection value output from the sensor as a parameter. The parameter is a parameter related to movement of the vehicle. The calculation unit calculates an inertia force generated in the vehicle on the basis of the parameter and the mass of the vehicle. The estimation unit estimates the wheel load on the basis of the inertia force and a predetermined estimation formula.

The invention discloses a railway wheel load instrument verification protection device, and relates to the technical field of railway metering equipment protection devices, the railway wheel load instrument verification protection device comprises a bottom plate, a wheel load instrument verification device is fixedly installed on the upper surface of the bottom plate, and an oil-resistant rubber plate is placed between the wheel load instrument verification device and the upper surface of the bottom plate; a camera assembly is additionally arranged on a vertical column of the wheel load instrument calibrating device; the upper surface of the bottom plate is covered with a sound insulation assembly. An operation opening is formed in the side wall of the sound insulation assembly, and an operation panel assembly is installed at the operation opening in a hinged mode. According to the railway wheel load instrument verification protection device, noise pollution to detection personnel during verification operation can be reduced, and the accuracy of the indicating value of a verification result can be guaranteed.

The invention provides a vehicle control method for achieving pivot steering, a vehicle controller and a vehicle. The vehicle control method is used for controlling a suspension system of the vehicle to assist in achieving pivot steering of an electric vehicle after a user starts a pivot steering function. The vehicle control method comprises the steps that after the user starts the in-situ steering function and before the electric vehicle starts in-situ steering, the suspension system is controlled to adjust the suspension height corresponding to one wheel of one axle to be lower than the suspension height corresponding to the two wheels of the other axle. And in the pivot steering process of the electric vehicle, the wheel is locked, and the electric vehicle is controlled to conduct pivot steering around the wheel. Therefore, the suspension height of the locking wheel is adjusted to be lower than the suspension height of the two wheels of the other axle by controlling the suspension system, so that the wheel load of the wheels of the other axle is transferred to the locking wheel, the success rate of in-situ steering of the vehicle is improved, and the tire abrasion of the two wheels of the other axle is reduced.

The embodiment of the present application belongs to the field of rail transit technology, and discloses a locomotive wheel surface fatigue damage prediction method and equipment. The corresponding method comprises the following steps: determining a first relationship parameter between a surface length and an internal length and a second relationship parameter between the internal length and an internal depth according to the surface length, the internal length and the internal depth of the pre-acquired crack of the locomotive wheel; generating a wheel-rail contact damage prediction model under the amplitude load condition according to the damage index distribution inside the wheel-rail contact spot under the static wheel load, the first relationship parameter and the second relationship parameter; generating a lateral damage index distribution of the locomotive wheel according to the wheel-rail contact damage prediction model; and predicting the surface fatigue damage condition of the locomotive wheel according to the lateral damage index distribution. The method provided by the present application can more accurately calculate the surface fatigue damage condition of the wheel under different operation lines, and obtain more reliable data.

The application discloses a train strong wind adjustment control method and device, medium and train, relates to the field of rail trains, and solves the problem of low real-time performance of monitoring environmental strong wind changes. A vehicle-mounted wind measuring device is used to monitor the wind field in a certain range in front of the running direction of the train, and the real-time monitoring of the whole global continuous wind field around the train, including the wind speed and direction, obtains safety indexes such as the derailment coefficient and the wheel load reduction rate of a section of line in front, and is used for finding the strong wind condition that may affect the driving safety of the vehicle in advance, guiding the train to evaluate the maximum running speed according to the wind field near the line, and improving the line operation efficiency.