349 results about "Vehicle suspension system" patented technology

The invention belongs to the technical field of vehicle suspension vibration isolation, and particularly relates to a distributed driving vehicle suspension system and an active-disturbance-rejection control method, and the method comprises the following steps: 1, constructing a distributed driving vehicle suspension structure model based on active-disturbance-rejection control; 2, analyzing and expressing the active disturbance rejection control method; step 3, solving an internal parameter and a target function of the active-disturbance-rejection control strategy with the optimal performance by adopting an optimization algorithm; and 4, performing dynamic performance simulation analysis. The method has the beneficial effects that the dynamic characteristics of the complex system can be described more accurately; and the riding comfort of the vehicle is improved.

An electric wheel controller and methods for operating and manufacturing an electric wheel controller are disclosed. Embodiments include a controller forming a structural and / or load bearing component of the vehicle suspension system. Embodiments of the controller can be mounted to a wheel assembly, and in some embodiments the controller is a suspension knuckle. Embodiments include a controller with a cavity and electronic circuitry submerged in liquid coolant. During operation the coolant can absorb heat from the immersed circuitry. In some embodiments the coolant transitions to a gas and / or vapor, and can move to an upper portion of the cavity. When the coolant contacts the cooler surfaces of the cavity the coolant can transition back to a liquid and return to a pool of liquid coolant in which the circuitry is immersed. A heat sink can be connected to the controller, such as by laser soldering.

A control system for a vehicle, comprising one or more controllers, configured to receive a collision warning signal, and modify one or more parameters of the vehicle suspension system in response to the received collision warning signal. In this way, the suspension may be automatically configured in a manner which assists the driver in carrying out a vehicle manoeuvre to avoid a potential collision.

A control system for a vehicle is provided, the control system comprising one or more controllers, the control system configured to receive an acceleration or deceleration demand signal from an automatic cruise control system, and request modification of one or more parameters of the vehicle suspension system in response to the received acceleration or deceleration demand signal. In this way, the vehicle suspension system may be modified in preparation for an acceleration or deceleration of the vehicle, to inhibit or at least reduce the occupants of the vehicle experiencing an undesirable pitching movement of the vehicle during the course of the change in speed of the vehicle.

The invention discloses an intelligent self-adaptive vehicle suspension system based on deep learning and a control method, and belongs to the technical field of vehicle suspensions.The system comprises a quantum state collaborative sensing module, a Lie group road condition prediction module, a topology invariant optimization module and a dual closed-loop control module; the quantum state collaborative perception module realizes multi-sensor deep fusion based on a quantum state entanglement theory, the fusion precision is improved by more than 40%, the Lie group road condition prediction module establishes a road surface dynamic evolution model by using a special Euclidean group SE (3), the prediction precision is improved by 45%, and the topology invariant optimization module extracts road surface topology invariants through continuous coherence, so that the road surface dynamic evolution model is optimized. The suspension parameters are optimized on the octyl manifold, the convergence speed is increased by 60%, the dual closed-loop control module constructs a forward prediction and backward correction double closed loop, the response time is shortened to 15 milliseconds, and the comfort and controllability of the vehicle are remarkably improved.

The invention relates to a vehicle control method and system and a vehicle, and belongs to the technical field of vehicle control. The method comprises the steps that a vehicle suspension and suspension system comprehensive dynamical model is established, and in the vehicle running process, vehicle running data are collected and comprise vehicle body acceleration data, road surface preview data and engine rotating speed data; calculating and generating a control instruction of the vehicle suspension system based on the vehicle operation data so as to adjust the state of the vehicle suspension system; and calculating and generating a control instruction of the vehicle suspension system based on the vehicle operation data so as to adjust the state of the vehicle suspension system. According to the control method provided by the invention, cooperative control of the vehicle suspension system and the vehicle suspension system is realized, the vibration suppression effect is obviously improved, and the riding comfort on road sections with different jolts can be improved.

Embodiments of the present disclosure include apparatuses and methods for mounting an electronic component, including an integrated circuit that generates heat during operation, to a component of a vehicle suspension system, such as a suspension knuckle. Some embodiments include mounting the electronic component inside a cavity that contains coolant. In some embodiments the electronic component is immersed in liquid coolant that absorbs heat from the electronic component and transfers the heat to the suspension component where the heat can be transferred to the external environment. In some embodiments the liquid coolant transitions to a gas and / or vapor, and can condense back to a liquid after transferring heat to the suspension component. In some embodiments the electronic component is connected to a heat sink, such as by soldering, and the heat sink can include cooling fins that are immersed in the coolant.

The invention discloses a control method of a cooperative energy feedback suspension system, and belongs to the technical field of vehicle suspension systems, and the control method comprises the following steps: S01, information acquisition; s02, road condition judgment; s03, performing disconnection control on the stabilizer bar; s04, connecting and controlling the stabilizer bar; s05, energy recovery and output control; s06, carrying out smoothness control; and S07, performing dynamic adjustment. The method has the beneficial effects that by intelligently judging the vehicle driving state and the road condition, connection and disconnection of the active stabilizer bar and energy recovery and output strategies of the shock absorber and the active stabilizer bar are flexibly controlled according to different working conditions. Under various complex working conditions such as turning, hollowing and bumping, the system can efficiently recover energy, the application range of energy recovery is remarkably expanded, the total energy recovery amount is increased, then the endurance mileage of a battery is prolonged, and the problems that in the prior art, the energy recovery efficiency is low, and the application range is limited are solved.

The invention relates to the technical field of vehicle suspension system control, and discloses a multi-source data fused shock absorber self-adaptive regulation and control method and system.The method comprises the steps that multi-source signal data are synchronously collected through a sensor, and a preliminary signal set is generated in combination with environment change data; analyzing vibration signal peak amplitude and displacement data integral variation trend, distinguishing high-frequency small-acceleration and low-frequency large-amplitude pavement excitation characteristics, and determining signal contribution degree distribution; dynamically adjusting the signal weight and introducing temperature compensation to correct stiffness drift to generate a weighted vector; carrying out weighting processing, smoothing, noise suppression and nonlinear amplitude estimation to generate fusion data, and optimizing the weight to obtain a refined weighted vector; after secondary fusion, a cross-frequency-band transition smoothing technology and a least square method are adopted to determine damping characteristic parameters; according to the vehicle suspension system self-adaptive regulation and control method and system, the self-adaptive regulation and control accuracy and the working condition adaptability of the vehicle suspension system are improved.

The invention provides a suspension control method and system based on actual measurement damping force of a shock absorber and a vehicle. The method comprises the following steps: acquiring an actually measured damping force value of a shock absorber in a vehicle suspension system; the design value of the damping force of the shock absorber is obtained, and the correction coefficient of the shock absorber is obtained based on the relation between the actually-measured damping force value of the shock absorber and the design value of the damping force of the shock absorber; and acquiring and outputting a control current for controlling the shock absorber based on the correction coefficient. According to the method, the control parameters in the control algorithm are corrected through the actual damping force of the shock absorber, it is guaranteed that correction can be conducted according to the actual situation whether the actual damping force is too large or too small, more accurate damping force output is achieved, the suspension control accuracy is effectively improved, and the whole vehicle control effect is better.

Aspects of the present invention relate to a control system (100, 200) for a vehicle suspension system (300) of a vehicle (600). The control system comprises one or more controllers. The control system is configured to: determine that a first subsystem (302) of the plurality of connected subsystems is operating in a de-rated mode in response to a subsystem operating condition of the first subsystem being outside a predetermined operating window; and in dependence on determining that the first subsystem is operating in the de-rated mode, transmit a de-rate indicator to a further subsystem (304, 306) of the plurality of connected subsystems, wherein the de-rate indicator is configured to: indicate, to the further subsystem, that the first subsystem is operating in a de-rated mode; and cause the further subsystem to operate in a de-rate response mode, wherein the operation of the vehicle suspension system with the first subsystem operating in the de-rated mode and the further subsystem operating in the de-rate response mode provides a higher level of vehicle control in comparison to the vehicle suspension system operating with the first subsystem operating in the de-rated mode without the further subsystem operating in the de-rate response mode.

The invention belongs to the field of vehicle suspension system control, and particularly relates to vehicle suspension system control applying an inertial container device, in particular to a vehicle suspension control method based on dynamic surface control, which comprises the following steps of: establishing a whole vehicle controlled model; solving a strict feedback system of a whole vehicle kinetic equation; defining a position error; designing an intermediate virtual variable; dynamic surface control; and the electromagnetic thrust is solved. According to the method, coordination control of the vehicle suspension system can be achieved, the riding comfort of the vehicle is improved, and the method provides a new research thought and direction for design and application of the vehicle suspension.

The invention discloses a vehicle oil damper and an intelligent monitoring system thereof, and relates to the technical field of vehicle suspension systems, the vehicle oil damper comprises a dustproof sleeve, the dustproof sleeve is made of high-strength steel, the top of the dustproof sleeve is fixedly connected with an upper sealing plate through welding, and a first sealing ring is embedded in the bottom of the upper sealing plate; the surface of the first sealing ring makes contact with the inner wall of the dustproof sleeve, and the bottom of the upper sealing plate is fixedly connected with an airtight ring. According to the invention, by integrating a multi-dimensional sensor network and a data fusion algorithm, real-time, accurate and deep perception and fault diagnosis of the working state and the health state of the shock absorber are realized; according to the intelligent processing unit based on the heterogeneous multi-core architecture, various faults such as nitrogen leakage, sealing failure, oil emulsification and abnormal wear can be warned in advance, and the damping characteristic is compensated through the performance self-adaptive adjustment module, so that the reliability, safety and riding comfort of a suspension system are improved.

A vehicle suspension system includes a support member coupled to a vehicle body, a shock absorber connecting the support member and the vehicle body and absorbing the road surface impact, a steering section pivotably mounted on the support member, and an in-wheel motor section coupled to the steering section in an interworking manner and mounted on a wheel to provide driving force.

A structural assembly for an electric vehicle that includes a vehicle frame, a pair of suspension mounts and a deflector beam. The vehicle frame has a pair of longitudinal rails. The pair of suspension mounts are configured to support a vehicle suspension system. Each suspension mount is secured to a respective longitudinal rail of the pair of longitudinal rails. The deflector beam includes a body portion and opposing end portions. The body portion extends in a transverse direction relative to a longitudinal direction of the electric vehicle and is configured to support an electrical module between the pair of longitudinal rails. The deflector beam is secured to the pair of suspension mounts or the vehicle frame. Each end portion extends from the body portion to a respective location that is outboard of a respective suspension mount of the pair of suspension mounts.

A suspension knuckle includes an upper member including a first end and a second end. The upper member includes a first opening at the second end and a second opening arranged between the first end and the second end. A lower member includes a first end portion and a second end portion. The lower member includes a first passage arranged at the second end portion and a second passage arranged between the first end portion and the second end portion. A first fastener connects the upper member and the lower member and passes through the first passage and the second opening. The first fastener defines a pivot point of the suspension knuckle. A second fastener passes through the second passage and the first opening. The second fastener connects the upper member and the lower member and establishes an amount of pivot of the upper member relative to the lower member.

The invention relates to an active suspension control method and device based on driving style recognition and pavement preview. The method comprises the steps that vehicle state parameters and driving environment data in the vehicle driving process are collected in real time; determining a driving style based on the vehicle state parameters, and determining pavement preview information of the vehicle reaching different pavement areas based on the driving environment data; according to the driving style, the vehicle state parameters and the road surface preview information, determining a target regulation and control strategy for an active suspension of the vehicle; and according to the target regulation and control strategy, the active suspension executing mechanism is controlled to act. By adopting the method, the adaptive capacity of the vehicle suspension system can be improved.

A retrofit kit for replacing an existing leaf spring suspension system, methods of replacing the existing leaf spring suspension systems, and suspension systems may include an upper load beam having a proximal end and a distal end, the distal end being configured to pivotally mount to a vehicle. A lower control arm includes a proximal end, a distal end, and a mounting location positioned between the proximal end distal ends. The distal end of the lower control arm is configured to pivotally engage a leaf spring mounting eye provided on the vehicle. The mounting location on the lower control arm is configured to pivotally receive the proximal end of the upper load beam.

A method of inflating a bellows accumulator of a vehicle suspension system includes providing a housing with an accumulator port and an inflation port and inserting a bellows assembly within the housing. The bellows assembly includes an annular bellows wall at least partially defining a variable volume plenum. The bellows assembly is axially extendable between a retracted position and a fully extended position. The air chamber is in fluid communication with the inflation inlet. An energy storage chamber between the housing and the bellows assembly is in fluid communication with the accumulator port. The method further includes evacuating the energy storage chamber when the bellows assembly is not in the fully extended position such that a pressure less than atmospheric pressure is obtained within the energy storage chamber, and supplying pressurized gas to the inflation port.

A gas spring includes a cylinder, a rod movable relative to the cylinder, and an accumulator. The rod and the cylinder at least partially define a chamber having a variable volume and contain a first pressurized gas. The accumulator is in communication with the chamber and contains a second pressurized gas. The gas spring provides a variable spring rate based on a pressure of the first pressurized gas relative to a threshold pressure.

A jounce bumper for a vehicle suspension system may include a first body portion made of a first material disposed at a first end of the jounce bumper extending over a first longitudinal distance along a longitudinal centerline of the jounce bumper and a second body portion made of a second material disposed at a second end of the jounce bumper to extend over a second longitudinal distance along the longitudinal centerline of the jounce bumper. The first material may have a different hardness than the second material such that force versus displacement characteristics for resistance to compression over the first and second longitudinal distances are different.

The invention relates to the technical field of vehicle design optimization, in particular to a spring adjustment part matching optimization method and system based on suspension offset frequency, and the method comprises the steps: extracting spring structure parameters and adjustment part structure parameters associated with offset frequency response, and constructing a disturbance combination matrix; performing response analysis on the disturbance combination matrix based on a simulation model of the whole vehicle suspension system, obtaining first scale data and second scale data, and forming a multi-scale response data set; according to the multi-scale response data set, calculating the first sensitivity and the second sensitivity of the spring adjustment piece, and constructing a multi-scale sensitivity index system; based on a multi-scale sensitivity index system, the independent contribution degree of each adjustment piece to the target offset frequency is evaluated, key influence adjustment pieces are identified, a structure parameter-offset frequency response mapping model is constructed according to the independent contribution degrees, and the specific influence mode and influence degree of each adjustment piece are obtained; and optimizing according to a multi-conflict design target, and outputting a spring and adjustment part combination matching suggestion.

A bump stop system is designed for use in a vehicle suspension system featuring a shock assembly consisting of a shock shaft, shock can, and shock hat or shock eye. The system comprises a bump stop body configured to interact with the shock shaft and may include features such as grooves extending into the bump stop body, a composite structure of layered components, cast-in-place metal hardware for securing the bump stop, and a friction fit for placement. Additionally, the bump stop may be used with a coil spring, with the shock hat also functioning as a coil cup. The system may include an outer surface with a slit for fitting around the shock shaft, with hardware for closure. Methods for forming the bump stop involve processes such as pouring or injecting elastomeric mixtures, curing, and potential heating, with the option to serve as a spring assist and accommodate specific applications.

The invention discloses a tracked vehicle loading wheel dynamic load analysis method, system and device and a medium, and relates to the field of tracked vehicle dynamics, and the method comprises the steps: constructing a road surface unevenness time domain model considering front and rear wheel input variable time difference correlation and left and right wheel input coherence, and outputting a road surface excitation input signal; establishing a parameterized kinetic model of the tracked vehicle suspension system and further determining a state-space equation; according to the road surface excitation input signal and the state-space equation, obtaining a dynamic load and a dynamic load coefficient of each loading wheel; establishing a tracked vehicle action system simulation model, performing dynamic load simulation based on different driving speeds, different road surface grades and different track shoe parameters by adopting a multi-body dynamics simulation method, and determining a change rule of a dynamic load of a loading wheel; the structure of the tracked vehicle loading wheel is optimized according to the change rule of the loading wheel dynamic load, the loading wheel dynamic load can be accurately analyzed, and a reliable basis is provided for design optimization of the tracked vehicle.

This invention discloses a method for analyzing the meridional strain of air springs based on piecewise integration of elliptical arc length, belonging to the technical field of vehicle suspension systems or rubber elastic elements design. The method includes the following steps: approximating the arc segment from the top of the air spring generatrix to the outermost bulge point as the first quadrant of an ellipse, determining the major and minor semi-axes of the reference and inflation states; introducing normalized coordinates to establish a linear mapping of the abscissas of the two states, constructing an elliptical arc length infinitesimal element and transforming it to the same interval for integration; dividing the interval into even-numbered equal parts, using the complex Simpson method to obtain the arc length piecewise, calculating the ratio of the inflation arc length to the reference arc length as the elongation ratio, and taking the natural logarithm to obtain the true meridional strain of each segment of the generatrix; this invention can accurately describe the non-uniform deformation of each segment of the generatrix during air spring inflation, providing a basis for strain prediction and fatigue assessment.

A jounce bumper of an automotive vehicle suspension system contains a longitudinal axis. The jounce bumper is configured to resiliently deform between an uncompressed state and a compressed state, where in the compressed state the jounce bumper has a smaller length in the direction of the longitudinal axis than in the uncompressed state. The jounce bumper also contains a base body that acts as a primary spring element, where the base body is partially or completely made of a volume-compressible first material. In particular, the base body further contains at least one secondary spring element integrated within the base body. The secondary spring element is resiliently deformable between a first length in the uncompressed state and a second length in the compressed state, where the second length is smaller than the first length. The secondary spring element is partially or completely made of a compact second material.

The present disclosure develops a cap 100 for a damper 214 in a suspension system 200 of a vehicle. The cap 100 includes a hollow first cylindrical portion 102 configured for placement over the damper 214 and a hollow second cylindrical portion 104 having an open end 106 and a closed end 108. The hollow second cylindrical portion 104 is concentrically coupled to the hollow first cylindrical portion 102 at the open end 106 of the hollow second cylindrical portion 104. Further, the hollow second cylindrical portion 104 is sized to receive the hollow second cylindrical portion 104 within an internal cavity of an upper mount 210 of the suspension system 200 during bound movement of the damper 214.

The present disclosure relates to systems and methods of providing suspension health monitoring in a vehicle according to examples. In examples, suspension health monitoring includes applying a machine learning (ML) model to collected sensor data for detecting patterns of behavior that can be correlated to a failing state of a component of the suspension system of the vehicle. The ML model may be trained to detect various stages of a failing state of one or more components. A failing state may be associated with a pattern of movement, vibration, temperatures, pressure variations, and / or another measurable characteristic of one or more drive axles and / or other monitored components as a result of the suspension system's response to a driving event. In some examples, a mitigation action is determined and performed to help mitigate the failing state and prevent further failure and / or performance and safety issues.

A method of controlling a damping characteristic of an adjustable shock absorber of a vehicle includes the steps of electronically controlling (352), with at least one controller, the damping characteristic of the adjustable shock absorber at a first time based on a plurality of inputs from a plurality of sensors supported by the vehicle; receiving (354), at a second time after the first time, a driver-initiated request to change the damping characteristic of the adjustable shock absorber by a driver-actuatable input; changing (360), with the at least one controller, the damping characteristic of the adjustable shock absorber at a third time after the second time based on the received driver-initiated request; and automatically changing (356), with the at least one controller, the damping characteristic of the adjustable shock absorber at a fourth time after the third time based on the plurality of inputs from the plurality of sensors.

The invention discloses a stabilizing assembly and an automobile suspension system. A supporting seat of the stabilizing assembly is provided with an accommodating space; the damping piece is arranged in the accommodating space; one end of the stabilizing piece penetrates through the supporting seat, and part of the stabilizing piece is located in the containing space and is in sliding connection with the supporting seat through the damping piece; the buffering piece is arranged on the stabilizing piece; buffer liquid is stored in the containing space of the supporting seat, the stabilizing part slides relative to the supporting seat, the buffer liquid flows through the damping part and generates first damping force, and the buffer part is used for synchronously moving along with the stabilizing part and generating second damping force under the hydraulic action of the buffer liquid, so that torsion movement of an automobile is stabilized through the first damping force and the second damping force. Therefore, the stabilizing assembly can provide corresponding damping force in different stages under the dual action of the buffering piece and the damping piece, so that the automobile can achieve self-adaptive adjustment of the damping force under different working conditions, and the practicability of the automobile in different scenes is improved.