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56 results about "Yaw stability control" patented technology
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Method and apparatus for controlling a trailer and an automotive vehicle with a yaw stability control system
InactiveUS6959970B2Improve mobilityHand manipulated computer devicesDigital data processing detailsMobile vehicleMotorized vehicle
Owner:FORD GLOBAL TECH LLC
Enhanced Yaw Stability Control to Mitigate a Vehicle's Abnormal Yaw Motion Due to a Disturbance Force Applied to Vehicle Body
ActiveUS20110166744A1Reduce yaw motionEasy to operateVehicle testingAnalogue computers for trafficControl systemNormal functioning
An enchanced stability control system (200) for a vehicle includes a vehicle status sensor that generates a sensor signal. A driver input sensor that generates an input signal. A controller (214) may disable normal yaw stability control operation and enable body-force- disturbance (BDF) yaw stability control (YSC) operation, which includes at least partially reducing response functions of the normal yaw stability control associated with the input signal, in response to the sensor signal and performing BFD-YSC functions to achieve desired control performance upon the detection of BFD reception. The controller (214) may also or alternatively compare the sensor signal to a threshold and detect an improperly functioning / inoperative vehicle status sensor. The controller (214) disregards information associated with the improperly functioning / inoperative vehicle status sensor, and continues to perform enhanced yaw stability control operations.
Owner:VOLVO CAR CORP
Integrated control method for distributed control of stability of electric automobile
InactiveCN106184199AImprove driving stabilityImprove steering comfortDriver input parametersDriver/operatorControl layer
The invention discloses an integrated control method for distributed control of an electric automobile. The integrated control method comprises the following steps of according to automobile speed, a steering wheel rotating angle and a steering wheel rotating angular speed, obtaining an expected yaw angular speed and an expected mass center sideslip angle by a signal processing layer by referring to a module; in an integrated control layer, according to the actual value of the yaw angular speed and the expected yaw angular speed, deciding a rear wheel additional yaw torque required for realizing control of the stability of the automobile; according to the actual valve of the mass center sideslip angle and the expected mass center sideslip angle, deciding the front wheel additional rotating angle required for realizing control of the stability of the automobile; in a control distribution layer, according to a target driving torque of a driver and the rear wheel additional yaw torque, reasonably distributing four-wheel driving force, and according to a target front wheel rotating angle of the driver and the front wheel additional rotating angle, correcting the front wheel rotating angle; and controlling the yaw stability by an executing layer through a hub motor. The integrated control method disclosed by the invention has the characteristics that the handling safety stability of the automobile is high, and the steering comfortability of the driver is improved.
Owner:LIAONING UNIVERSITY OF TECHNOLOGY
Yaw stability control system
InactiveCN101565043AEffective frictionSteering linkagesAutomatic steering controlElectric power steeringSteering wheel
The present invention relates to a yaw stability control system for a vehicle equipped with electric power assisted steering and a method of controlling it. The system comprises: means (10) for determining the occurrence of understeer; means for determining the degree of understeer after the occurrence of understeer is determined; means (20) for determining if the determined degree of understeer exceeds a threshold value; means (30) for saving the steering wheel torque value and steering wheel angle value when determined that a calculated drop in steering wheel torque (8) exceeds the thresholdvalue; means for calculating a delta steering wheel torque (3), delta steering wheel angle (9) and updating the steering wheel angle (6) at the start of delta torque calculation; means for applying the calculated delta steering wheel torque (3) to the steering of the vehicle; means for calculating a driver intended steering wheel angle (5) and using it for controlling yaw stability control operations.
Owner:VOLVO CAR CORP
Method and apparatus for controlling a trailer and an automotive vehicle with a yaw stability control system
InactiveUS20050206235A1Improve mobilityHand manipulated computer devicesBraking action transmissionControl theoryMotorized vehicle
A system and method of controlling an automotive vehicle with a yaw stability control system and a trailer comprises determining a presence of a trailer, changing a side slip angle parameter threshold of the vehicle to a modified side slip parameter in response to the trailer signal, and controlling the yaw stability control system in response to the modified side slip parameter.
Owner:FORD GLOBAL TECH LLC
Vehicle yaw/roll stability control with semi-active suspension
A rollover avoidance system for changing the damping characteristics of suspension dampers at each wheel of a vehicle so as to mitigate the potential for vehicle rollover. The system includes a plurality of vehicle parameter sensors for measuring vehicle parameters and providing vehicle parameter signals. The system also includes a controller for generating a damper suspension command signal for each damper using the vehicle parameter signals. The controller considers a roll control factor representing a rollover condition of the vehicle and a yaw stability control factor representing a yaw condition of the vehicle to set the damping of the dampers to mitigate the potential for vehicle rollover.
Owner:GM GLOBAL TECH OPERATIONS LLC
Multi-time scale rolling optimization control method for stability of vehicle yaw
The invention discloses a multi-time scale rolling optimization control method for stability of a vehicle yaw. The method comprises the steps that vehicle path information is taken as a research point, side behavior characteristics of a driver are considered, and through rolling previewing decision optimization, a steering wheel angle meeting a driving path is obtained; and on the basis, different time scales of driver behaviors and vehicle active safety control are considered, and the multi-time scale rolling optimization method is adopted to control side stability of a vehicle. Firstly, a simplified vehicle dynamical model is built, and then design of a double-closed-loop controller is carried out, wherein the double-closed-loop controller comprises a driver decision module and a nonlinear side stability integrated control module, a control loop formed by the driver decision module and the nonlinear side stability integrated control module serves as an outer control loop, and a control loop formed by the nonlinear side stability integrated control module serves as an inner control loop, so that the stability control over the vehicle yaw can be completed.
Owner:JILIN UNIV
Vehicle yaw stability control method based on three-step method
ActiveCN105172790AStandard clear structureEfficient use ofOther vehicle parametersVehicle dynamicsTurn angle
The invention discloses a vehicle yaw stability control method based on a three-step method. A hierarchical control strategy is adopted, based on the three-step method, the front wheel turn angle and additional yaw moment are obtained, and based on a quadratic programming optimization method, the additional yaw moment is distributed into braking force on four wheels to act on a vehicle. The method includes the steps of firstly, establishing a simplified vehicle dynamics model, wherein the two-degree-of-freedom model is used for representing the relation between the steering stability of the vehicle and the lateral movement and yaw movement of the vehicle; secondly, designing a three-step method controller, wherein expected yaw velocity information is input into the three-step method controller, and the additional yaw moment and the front wheel turn angle are determined in a three-step method algorithm flow according to the value of expected yaw velocity and the lateral acceleration, actual yaw velocity, actual sideslip angle and longitudinal speed, fed back in real time, of the vehicle; thirdly, performing vehicle yaw stability control based on the three-step method controller designed in the second step.
Owner:JILIN UNIV
Yaw stability control method for representing nonlinear characteristics of automobile
InactiveCN108099902AImproved yaw stabilityExtended yaw stability control domainReference modelAdhesion coefficient
Disclosed is a yaw stability control method for representing nonlinear characteristics of an automobile. The method is characterized in that a reference model, a tire lateral force and cornering stiffness processor, an MPC and a Carsim automobile model. The reference model is used for determining the expected yaw velocity of the automobile; the tire lateral force and cornering stiffness processoris used for determining the side slip angle, lateral force and cornering stiffness of a tire; the Carsim automobile model is used for outputting actual motion state information of the automobile, andthe information comprises the longitudinal velocity, yaw velocity, centroid slip angle and road adhesion coefficient of the automobile; the MPC selects a prediction model according to the cornering stiffness of the tire, combines the expected yaw velocity of the automobile and the actual motion state information of the automobile to optimally calculate the front-wheel additional rotation angle ofthe automobile, superimposes the front-wheel additional rotation angle with a front-wheel rotation angle generated according to steering input of a driver and outputs a superimposition result to the Carsim automobile model to achieve yaw stability control over the automobile.
Owner:CHANGCHUN UNIV OF TECH
Enhanced system for yaw stability control system to include roll stability control function
A yaw stability control system (18) is enhanced to include roll stability control function for an automotive vehicle and includes a plurality of sensors (28-39) sensing the dynamic conditions of the vehicle. The sensors may include a speed sensor (20), a lateral acceleration sensor (32), a yaw rate sensor (28) and a longitudinal acceleration sensor (36). The controller (26) is coupled to the speed sensor (20), the lateral acceleration sensor (32), the yaw rate sensor (28) and a longitudinal acceleration sensor (36). The controller (26) generates both a yaw stability feedback control signal and a roll stability feedback control signal. The priority of achieving yaw stability control or roll stability control is determined through priority determination logic. If a potential rollover event is detected, the roll stability control will take the priority. The controller for roll stability control function determines a roll angle of the vehicle from the lateral acceleration sensor signal and calculates the feedback control signal based on the roll angle.
Owner:FORD GLOBAL TECH LLC
Adaptive Adjustment Method of Automobile Active Front Wheel Steering Based on Model Predictive Control
InactiveCN109050658AAchieve control effectImprove controlSteering linkagesAutomatic steering controlAdhesion coefficientReference model
The method comprises the following steps: a reference model, a tire data processor, an MPC controller and a CarSim vehicle model; The reference model is used to determine the desired yaw angular velocity of the vehicle. The tire data processor is used for determining the side angle, side force and side force gradient of the tire. The CarSim automobile model is used to output the information of theactual moving state of the automobile, including the longitudinal velocity, yaw angular velocity, center-of-mass deflection angle and road adhesion coefficient. According to the expected yaw angularvelocity and the actual motion state of the vehicle, the MPC controller optimally solves the additional rotation angle of the front wheel of the vehicle and outputs it to the CarSim vehicle model to control the vehicle to achieve yaw stability control.
Owner:CHANGCHUN UNIV OF TECH
Control of regenerative braking during a yaw stability control event
InactiveUS7093912B2Promote recoveryHybrid vehiclesSpeed controllerRegenerative brakeFeedback controller
The present invention is a method and system to control regenerative braking during the operation of a yaw stability control system. The method and system use feedback control algorithms to monitor and dynamically modify regenerative and non-regenerative braking. The controller can use a simple proportional-integral-derivative feedback controller. A vehicle yaw stability control system can determine if a vehicle is experiencing an oversteer or understeer condition. The controller compares actual brake balance to a desired brake balance. The controller determines if the front axle wheels are overbraked relative to the rear axle wheels or if the rear axle wheels are overbraked relative to the front axle wheels as compared to the desired brake balance. The controller can adjust regenerative braking and non-regenerative braking levels according to the determinations.
Owner:FORD MOTOR CO
Enhanced yaw stability control to mitigate a vehicle's abnormal yaw motion due to a disturbance force applied to vehicle body
ActiveUS8565993B2Improved stability controlReducing response functionVehicle testingAnalogue computers for trafficControl systemSignal correlation
An enhanced stability control system (200) for a vehicle includes a vehicle status sensor that generates a sensor signal. A driver input sensor that generates an input signal. A controller (214) may disable normal yaw stability control operation and enable body-force-disturbance (BFD) yaw stability control (YSC) operation, which includes at least partially reducing response functions of the normal yaw stability control associated with the input signal, in response to the sensor signal and performing BFD-YSC functions to achieve desired control performance upon the detection of BFD reception. The controller (214) may also or alternatively compare the sensor signal to a threshold and detect an improperly functioning / inoperative vehicle status sensor. The controller (214) disregards information associated with the improperly functioning / inoperative vehicle status sensor, and continues to perform enhanced yaw stability control operations.
Owner:VOLVO CAR CORP
Distributed electric vehicle yaw stability control method and system
ActiveCN110239621AAchieve Steady SteeringAccurately judge the degree of stabilitySteering partsWeight coefficientRoad surface
The invention discloses a distributed electric vehicle yaw stability control method and system. The distributed electric vehicle yaw stability control method includes the steps that a road surface adhesion coefficient of the road surface on which a vehicle is and the state data of the vehicle at current time are obtained; a centroid inclined angle-centroid inclined angle velocity phase plane diagram corresponding to the road surface on which the vehicle is is determined based on the road adhesion coefficient; a maximum stable area and a minimum stable area of the phase plane diagram are determined; and the positions of phase trajectory points of the vehicle in the phase plane diagram in a current state are determined; a centroid inclined angle weight coefficient is determined according to the positions; the expected yaw angular velocity and expected centroid inclined angle of the vehicle are calculated; a sliding mode surface switching function is established; according to the state data, the centroid inclined angle weight coefficient, the expected yaw angular acceleration and the expected centroid inclined angle velocity and the sliding mode surface switching function, a desired additional yaw moment is calculated; and the steering of the vehicle at the current moment is controlled based on the expected additional yaw moment. According to the distributed electric vehicle yaw stability control method and system, the stability degree of the vehicle can be accurately judged, and the steady-state steering of the electric vehicle is realized.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY +1
Enhanced system for yaw stability control system to include roll stability control function
A yaw stability control system (18) is enhanced to include roll stability control function for an automotive vehicle and includes a plurality of sensors (28–39) sensing the dynamic conditions of the vehicle. The sensors may include a speed sensor (20), a lateral acceleration sensor (32), a yaw rate sensor (28) and a longitudinal acceleration sensor (36). The controller (26) is coupled to the speed sensor (20), the lateral acceleration sensor (32), the yaw rate sensor (28) and a longitudinal acceleration sensor (36). The controller (26) generates both a yaw stability feedback control signal and a roll stability feedback control signal. The priority of achieving yaw stability control or roll stability control is determined through priority determination logic. If a potential rollover event is detected, the roll stability control will take the priority. The controller for roll stability control function determines a roll angle of the vehicle from the lateral acceleration sensor signal and calculates the feedback control signal based on the roll angle.
Owner:FORD GLOBAL TECH LLC
Control of regenerative braking during a yaw stability control event
InactiveUS20050029863A1Improve energy recoveryPromote recoveryHybrid vehiclesSpeed controllerRegenerative brakeFeedback controller
The present invention is a method and system to control regenerative braking during the operation of a yaw stability control system. The method and system use feedback control algorithms to monitor and dynamically modify regenerative and non-regenerative braking. The controller can use a simple proportional-integral-derivative feedback controller. A vehicle yaw stability control system can determine if a vehicle is experiencing an oversteer or understeer condition. The controller compares actual brake balance to a desired brake balance. The controller determines if the front axle wheels are overbraked relative to the rear axle wheels or if the rear axle wheels are overbraked relative to the front axle wheels as compared to the desired brake balance. The controller can adjust regenerative braking and non-regenerative braking levels according to the determinations.
Owner:FORD MOTOR CO
Method for controlling yaw stability of multi-wheel independent drive electric vehicle during steering
ActiveCN108340967AGuaranteed stabilityAvoid yaw instabilityElectrical steeringElectric energy managementState managementElectric vehicle
The invention specifically discloses a method for controlling yaw stability of a multi-wheel independent drive electric vehicle during steering. The method for controlling the yaw stability of the multi-wheel independent drive electric vehicle during steering comprises the following steps of step 1, distributing initial driving moments for wheels during the steering of the vehicle; step 2, calculating an ideal yaw velocity and an ideal side slip angle; step 3, obtaining a yaw velocity difference by using the ideal yaw velocity and real-time yaw velocity and obtaining a side slip angle difference by using the ideal side slip angle and a real-time side slip angle; step 4, if the yaw velocity difference is too large or the side slip angle difference is too large, executing step 4; and otherwise, returning to the step 2; and step 5, driving the electric vehicle by using calculated final driving moment and then returning to the step 2. On the basis of controlling key parameters of the multi-wheel independent drive electric vehicle during steering, the method for controlling the yaw stability of the multi-wheel independent drive electric vehicle during steering has the advantages that wheel slip state management is taken into consideration to realize the vehicle yaw stability control so that the side stability of the vehicle in the running process can be effectively guaranteed.
Owner:BEIJING INST OF SPACE LAUNCH TECH +1
Hub motor driven off-road vehicle yaw and roll stability integrated control method
The invention discloses a hub motor driven off-road vehicle yaw and roll stability integrated control method, which comprises the following steps of: obtaining vehicle operation parameters, obtaininga transverse load transfer rate and transverse motion balance equation at the current moment, and then obtaining a predicted transverse load transfer rate at the next moment; determining a yawing stability working condition according to the yawing angular velocity and the side slip angle; and determining a control mode of the yaw and roll integrated control system according to the predicted lateral load transfer rate and the yaw stability working condition. When the absolute value of the predicted transverse load transfer rate is lower than a safety threshold value, yaw stability control is taken as a primary target; and when the absolute value of the predicted transverse load transfer rate is greater than or equal to a safety threshold, roll stability control is taken as a primary targetand yawing stability control as a secondary target. Coordination optimization of the roll stability control system and the yaw stability control system is realized, conflicts during independent control of the two subsystems are eliminated, and coordinated control is performed to guarantee safety of the vehicle.
Owner:DONGFENG OFF ROAD VEHICLE CO LTD
Vehicle yaw stability control method based on saturation self-adaption
The invention provides a vehicle yaw stability control method based on saturation self-adaption and belongs to the field of vehicle stability control. The problem that saturation of a vehicle yaw stability actuator is not considered in an existing vehicle yaw stability control method, so that the control effect of the existing method is not ideal is solved. The vehicle yaw stability control methodbased on saturation self-adaption includes the steps that a two-freedom-degree vehicle yaw dynamics model in the vehicle turning process is established; a vehicle yaw stability controller based on saturation self-adaption is designed according to the two-freedom-degree vehicle yaw dynamics model; and the direct yaw moment of a vehicle is adjusted through the vehicle yaw stability controller basedon saturation self-adaption, so that the vehicle yaw velocity tracks the reference stead-state value of the vehicle yaw velocity. The vehicle yaw stability control method based on saturation self-adaption is particularly suitable for conducting yaw stability control on the vehicle.
Owner:HARBIN INST OF TECH
Vehicle yaw stability control method based on hybrid optimization of genetic algorithm and GPC
ActiveCN109849898AStrong global search capabilityImprove the accuracy of the optimal solutionSpeed controllerElectric energy managementReal-time dataDistribution method
The invention discloses a vehicle yaw stability control method based on hybrid optimization of a genetic algorithm and GPC. The vehicle yaw stability control method comprises the steps of establishinga vehicle two-degree-of-freedom linear model as a predictive model, calculating and obtaining an ideal yaw rate and an ideal sideslip angle by virtue of the predictive model, detecting and obtainingreal-time data by virtue of sensors, calculating and obtaining an optimal additional yaw moment by virtue of the method of hybrid optimization of the genetic algorithm and GPC according to the real-time data, adopting a left and right wheel driving force rule distribution method to distribute the optimal additional yaw moment into driving forces of four wheels of a four-wheel independent driving hub motor electric vehicle, and applying the driving forces to the wheels in a one-to-one correspondence manner. Compared with a common generalized predictive algorithm, the algorithm provided by the invention is better in global searching ability and global convergence by virtue of the method which introduces the genetic algorithm into the rolling optimization process of GPC for hybrid optimization; and the hybrid optimization of the obtained additional yaw moment is performed so as to greatly improve the accuracy of the optimal solution.
Owner:HEFEI UNIV OF TECH
Stability control system with body-force-disturbance heading correction
ActiveUS20090271073A1Easy to optimizeSimple control systemSteering initiationsDigital data processing detailsControl systemYaw control
A yaw stability control system for a vehicle detects and eliminates the vehicle yaw angle resulting from a body-force-disturbance and returns the vehicle to a pre disturbance heading. A yaw rate module generates a signal indicative of the vehicle yaw rate error. A yaw angle error module is triggered in response to a body-force-disturbance being detected by a body-force-disturbance detection unit, and performs integrations of the yaw rate signals to calculate a yaw angle error in order to obtain a correction of the vehicle yaw angle resulting from the body-force-disturbance. A yaw control module uses the yaw angle error in combination with the yaw rate error for a limited time period to generate yaw control signals that are sent to the vehicle brakes and / or active steering system for performing vehicle yaw stability control operations a signal to perform a body-force-disturbance yaw stability control operation for.
Owner:FORD GLOBAL TECH LLC
Sliding mode control method for optimizing vehicle yawing dynamic performance under all working conditions
The invention discloses a sliding mode control method for optimizing vehicle yawing dynamic performance under all working conditions, and relates to a yawing dynamic sliding mode control method. The method comprises steps of establishing a two-degree-of-freedom vehicle kinetic equation capable of representing the vehicle yaw rate and the lateral speed dynamic state; designing a sliding mode surface and a sliding mode control law expression for ensuring the stability of a closed-loop system according to the expected yaw rate, the lateral speed and the roll angle speed; providing an index for describing yaw response dynamic performance through yaw rate overshoot and adjustment time; giving a mathematical expression for calculating yaw rate overshoot and adjusting time; and solving an optimization problem to obtain a sliding mode control law parameter which enables the yawing dynamic state to be optimal. By designing a sliding mode controller and adjusting sliding mode surface parameters,yaw rate overshoot and adjustment time adjustment are achieved, the defects of existing yaw stability control are overcome, and the sliding mode control method capable of guaranteeing optimization ofvehicle yaw dynamic response performance under all working conditions is provided.
Owner:HARBIN INST OF TECH
Automobile yaw stability control method based on gain scheduling
The invention relates to an automobile yaw stability control method based on gain scheduling and aims to solve the problem that a reference value of automobile yaw angle speed cannot be traced by adopting an existing parameter-fixed automobile yaw stability control method under the situation that relevant parameters are perturbed. The automobile yaw stability control method comprises the steps that a standard (shown in the description) linear fractional transformation model is established according to a linear two-freedom-degree automobile model; 2, an augmented general controlled object Ggs is obtained according to the standard (shown in the description) linear fractional transformation model established in the step 1; 3, according to the augmented general controlled object Ggs obtained in the step 2, a controller K is obtained, the gain of the controller K of an automobile is dispatched according to the disturbances of whole automobile mass m and rotational inertia IZ, and expected automobile yaw angle speed tracing is completed. The automobile yaw stability control method is used in the field of linear control.
Owner:HARBIN INST OF TECH
Anti-rollover comprehensive control method for distributed driving electric automobile
The invention relates to an anti-rollover comprehensive control method for a distributed driving electric vehicle, which is characterized in that four control strategies of yaw stability control, rollstability control, decoupling control and differential brake-based anti-rollover control are used for combined control, and vehicle driving force and braking force are controlled at the same time; therefore, the rollover prevention comprehensive control of the distributed driving electric automobile is realized; for a distributed driving electric automobile, through research on yaw stability androll stability, delta MZ and delta MX are subjected to decoupling control to achieve torque distribution, the influence between yaw moment and roll moment is reduced to the maximum extent, the automobile can keep stable running to the maximum extent, and meanwhile, through distribution of braking moment, the torque distribution effect is improved to the maximum extent; and furthermore through brake torque distribution, anti-rollover control over the automobile is conducted based on differential braking. According to the whole scheme, aiming at the characteristic that four wheels of the distributed driving electric automobile can be independently controlled, driving force and braking force of the four wheels of the distributed driving electric automobile are distributed, and therefore rollover prevention control over the automobile is comprehensively conducted.
Owner:SHANGHAI UNIV OF ENG SCI
An Integrated Control Method for Distributed Control of Electric Vehicle Stability
InactiveCN106184199BSafe drivingImprove riding performanceDriver input parametersControl layerDriver/operator
The invention discloses an integrated control method for distributed control of an electric automobile. The integrated control method comprises the following steps of according to automobile speed, a steering wheel rotating angle and a steering wheel rotating angular speed, obtaining an expected yaw angular speed and an expected mass center sideslip angle by a signal processing layer by referring to a module; in an integrated control layer, according to the actual value of the yaw angular speed and the expected yaw angular speed, deciding a rear wheel additional yaw torque required for realizing control of the stability of the automobile; according to the actual valve of the mass center sideslip angle and the expected mass center sideslip angle, deciding the front wheel additional rotating angle required for realizing control of the stability of the automobile; in a control distribution layer, according to a target driving torque of a driver and the rear wheel additional yaw torque, reasonably distributing four-wheel driving force, and according to a target front wheel rotating angle of the driver and the front wheel additional rotating angle, correcting the front wheel rotating angle; and controlling the yaw stability by an executing layer through a hub motor. The integrated control method disclosed by the invention has the characteristics that the handling safety stability of the automobile is high, and the steering comfortability of the driver is improved.
Owner:LIAONING UNIVERSITY OF TECHNOLOGY
Method for controlling yaw stability of semi-trailer
ActiveCN113401114AAccurate control instructionsGood stability controlDriver input parametersSteering wheelSteering angle
The invention provides a method for controlling the yaw stability of a semi-trailer, which comprises the following steps: taking signals collected by sensors as system input, estimating a road adhesion coefficient by using lateral acceleration, calculating an ideal yaw velocity by using the lateral acceleration, a steering angle of a steering wheel, a wheel speed and the estimated road adhesion coefficient. The difference value between the actual vehicle yaw velocity measured by the yaw velocity sensor and the ideal yaw velocity is compared with the preset threshold value to serve as the basis for yaw stability control, and the control system can adapt to different road surfaces, so that the control instruction of the control system is more accurate, and the stability control effect is better. The output torque of an engine is reduced, active braking joint intervention is implemented in combination with yaw stability control intervention schemes under different working conditions, and accurate control over the yaw stability of the semi-trailer is achieved.
Owner:JILIN UNIV
A vehicle body stability control system for an electric vehicle
InactiveCN103935265BSmooth rideSpeed controllerElectric energy managementElectric machineControl system
Owner:吴刚 +3
A vehicle yaw stability control method based on three-step method
ActiveCN105172790BStandard clear structureEfficient use ofOther vehicle parametersVehicle dynamicsTurn angle
The invention discloses a vehicle yaw stability control method based on a three-step method. A hierarchical control strategy is adopted, based on the three-step method, the front wheel turn angle and additional yaw moment are obtained, and based on a quadratic programming optimization method, the additional yaw moment is distributed into braking force on four wheels to act on a vehicle. The method includes the steps of firstly, establishing a simplified vehicle dynamics model, wherein the two-degree-of-freedom model is used for representing the relation between the steering stability of the vehicle and the lateral movement and yaw movement of the vehicle; secondly, designing a three-step method controller, wherein expected yaw velocity information is input into the three-step method controller, and the additional yaw moment and the front wheel turn angle are determined in a three-step method algorithm flow according to the value of expected yaw velocity and the lateral acceleration, actual yaw velocity, actual sideslip angle and longitudinal speed, fed back in real time, of the vehicle; thirdly, performing vehicle yaw stability control based on the three-step method controller designed in the second step.
Owner:JILIN UNIV
Integrated control method for yaw and roll stability of off-road vehicles driven by hub motors
Owner:DONGFENG OFF ROAD VEHICLE CO LTD
Vehicle yaw stability control method and apparatus
ActiveCN103373348AExplain curvatureAssessment reliabilityBraking systemsControl theoryYaw stability control
Embodiments herein relate to a vehicle yaw stability control method as well as a vehicle yaw stability control apparatus (1). The yaw rate È of the vehicle is measured. A first reference yaw rate È ref is set. A difference yaw rate ” È is set. Stabilizing braking intervention is triggered when a value of the difference yaw rate ” È exceeds limits defined by difference yaw rate threshold values ” È min , ” È max . Information regarding the shape of the road ahead of the vehicle is acquired. The reliability of the driver steering input ´ is evaluated upon stabilizing braking intervention being triggered. In case the driver steering input ´ is deemed unreliable a replacement reference yaw rate È Ù ref road is set based on the acquired road shape and a replacement difference yaw rate ” È road is set whereupon stabilizing braking intervention is performed based on the replacement difference yaw rate ” È road .
Owner:VOLVO CAR CORP
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