369results about "Brake system interactions" patented technology

A method is for improving a vehicle-dynamics-related stability of a utility vehicle, wherein the utility vehicle has a lift axle. The method includes: determining a current ground speed of the utility vehicle; determining a stability-critical speed of the utility vehicle; comparing the current ground speed with the stability-critical speed; determining a lift status of the lift axle of the utility vehicle; and lowering the lift axle of the utility vehicle if the lift status represents a raised lift axle and the current ground speed is greater than or equal to the stability-critical speed. A device is for improving a vehicle-dynamics-related stability of a utility vehicle.

An electromechanical brake system (10) includes a first energy supply apparatus (20) and a second energy supply apparatus (21), a first system control device (30) and a second system control device (31), a plurality of electromechanical brake actuator devices (41), and a first plurality and a second plurality of electronic brake control systems (40a, 40b). Each of the electronic brake control systems is set up to control one of the electromechanical brake actuator devices. The first energy supply apparatus is connected to the first system control device and to each of the first electronic brake control systems, and the second energy supply apparatus is connected to the second system control device and to each of the second electronic brake control systems. A further control device (32, 47) may be connected to at least one of the first electronic brake control systems or one of the second electronic brake control systems.

A system including a computer having a processor and a memory. The memory includes instructions executable by the processor to, upon actuating movement of a steering element of a vehicle, measure a torque applied to the steering element in a direction opposite the actuated movement. In response to a determination that the torque is less than a predetermined threshold, the processor actuates a component of the vehicle.

A travel assistance method sets a target slip angle, estimates or detects an actual slip angle, sets a target braking / driving force by, when a sign of the vehicle body slip angle rotating in a turning direction of the vehicle is defined as positive and a sign of the vehicle body slip angle rotating in an opposite direction to the turning direction is defined as negative, correcting a required braking / driving force in such a manner as to increase a braking / driving force for a rear wheel or reduce a braking / driving force generated on a front wheel when the actual slip angle is larger than the target slip angle and correcting the required braking / driving force in such a manner as to reduce a braking / driving force for the rear wheel or increase a braking / driving force generated on the front wheel when the actual slip angle is smaller than the target slip angle.

The invention discloses an unmanned mining dump truck hydraulic braking system and a control method. The unmanned mining dump truck hydraulic braking system comprises a service brake valve set and a parking brake valve set. The service brake valve group comprises a first hydraulic proportional pressure reducing valve, a second hydraulic proportional pressure reducing valve, a first shuttle valve and a first pressure sensor; the first hydraulic proportional pressure reducing valve and the second hydraulic proportional pressure reducing valve are connected in parallel; oil outlets of the first hydraulic proportional pressure reducing valve and the second hydraulic proportional pressure reducing valve are communicated with an oil inlet of a first shuttle valve; an oil outlet of the first shuttle valve is connected with a first pressure sensor; the parking brake valve group comprises an electromagnetic directional valve, a redundant electromagnetic directional valve and a pressure switch; the electromagnetic directional valve is a normally closed valve, and the redundant electromagnetic directional valve is a normally open valve; the electromagnetic directional valve and the redundant electromagnetic directional valve are connected in series, the electromagnetic directional valve is connected with an oil inlet pipeline, the redundant electromagnetic directional valve is connected with an oil outlet pipeline and a parking brake caliper, and a pressure switch is arranged on the oil outlet pipeline.

Systems, methods, and articulated vehicles which use sensor rails attached to trailers to provide improved control for autonomous articulated vehicles. An example vehicle can receive, at a computer system of a tractor operating in an autonomous mode, trailer sensor data from a plurality of trailer sensors located on at least one trailer, the at least one trailer being coupled to the tractor. The computer system can also receive road condition data from at least one sensor, the at least one sensor being located on at least one of the tractor and the at least one trailer. The computer system can then identify, based on the trailer sensor data and the road condition data, a physical condition of the at least one trailer to be modified, and modify, via an electrical signal transmitted from the computer system, the physical condition.

To provide an information processing device capable of calculating an index value in a short period of time by extracting extraction data having obtained the feature of the entire original data.SOLUTION: A processing device of an information processing device executes retrieval processing which includes a first step (S120) of calculating a relative frequency distribution of original data, a second step (S125) of setting a plurality of time windows for cutting out a partial period data of the original data, a third step (S130) of cutting out data from the original data, a fourth step (S140) of calculating a relative frequency distribution of extraction data, and a fifth step (S145) for calculating an error between the relative frequency distribution of the original data and the relative frequency distribution of the extraction data, and repeatedly executes an attempt from the second step to the fifth step, changing settings of the plurality of time windows. The processing device calculates an index value of damage of a friction material of a transmission by using the extraction data whose error becomes equal to or smaller than the threshold value (S160).SELECTED DRAWING: Figure 3

The invention relates to a vehicle control method (1), comprising: detecting (17) an unstable driving state (330) of a vehicle (300) in advance at least using an actual variable (9) and a target trajectory (TSoll); wherein, during the early detection (17), it is ascertained whether the unstable driving state (330) is an understeer (332) of the vehicle (300) or an oversteer (334) of the vehicle (300); and in response to the early detection (17): defining (40) a steering angle correction (41) for the target steering angle ([delta] Soll), the steering angle correction (41) comprising a steering angle limit ([delta] lim) for the available actual steering angle ([delta] Ist) if the unstable driving state (330) is an understeer (332) of the vehicle (300); and wherein, if the unstable driving state (330) of the vehicle (300) is an oversteering (334), the steering angle correction (41) comprises a reverse steering angle (cs) directed opposite the target steering angle ([delta] Soll); and steers (47) the vehicle (300) using the steering angle correction (41). The invention also relates to a vehicle control system (200), a vehicle (300) and a computer program product.

The embodiment of the invention relates to the technical field of vehicle control and intelligent driving, and discloses a redundant braking control method and device and a computer readable storage medium. The method comprises the steps that under the condition that a vehicle is in an intelligent driving function activation state, operation data of the vehicle are detected; according to the operation data, the intelligent driving function and the intelligent driving grade corresponding to the intelligent driving function, a target redundant braking module is determined in the composite redundant braking system; and when the main braking module is in the failure state, the target redundant braking module is adopted to take over the main braking module. According to the technical scheme, intervention of the redundant braking module can meet the current braking requirement of the vehicle, the intervention reasonability of the redundant braking module is improved, and the service life of the redundant braking system is guaranteed.

Provided are a control apparatus of a four-wheel independent control vehicle (10) and a method thereof. The control apparatus of a four-wheel independent control vehicle includes a plurality of wheels (21-24) each installed with a steering device (150), a driving device (160), and a braking device (170), and a processor (110) configured to, when a failure occurs in any one steering device of the plurality of wheels, determine a location of a failed wheel, calculate an insufficient cornering force of the failed wheel, and compensate for the insufficient cornering force by controlling at least one of the steering device, the driving device, and the braking device installed on each of the plurality of wheels. Even though a failure occurs in the steering device of any one wheel, traveling performance can be maintained by compensating for an insufficient cornering force.

The invention relates to a method for compensating for a disadvantageous manual steering intervention during an automated evasive maneuver of a vehicle. During the evasive maneuver, a wheel-specific braking intervention is initiated if an actual steering angle (δ ist ) of a steering wheel of the vehicle due to the manual steering intervention by an angle value above a predetermined limit value from a target steering angle (δ soll ) differs.

The invention relates to a method (1) for improving the driving dynamic stability of a commercial vehicle (300), the commercial vehicle (300) having a lift bridge (314), the method (1) comprising: ascertaining (3) a current driving speed (V) of the commercial vehicle (300); ascertaining (5) a speed (Vcrit) of a critical instability of the commercial vehicle (300); comparing (7) the current driving speed (V) with the critical unstable speed (Vcirct); ascertaining (9) a lifting situation (Slift) of a lifting bridge (314) of the commercial vehicle (300); and lowering (11) the lift bridge (314) of the commercial vehicle (300) if the lift condition (Slift) represents that the lift bridge is in lift (Sup) and the current travel speed (V) is greater than or equal to a critical unstable speed (Vcrit). In addition, the invention also relates to a device for improving the driving dynamic stability of a commercial vehicle (300), a commercial vehicle (300) and a computer program product.

The disclosure relates to a steering system assembly for a vehicle, for example a steer-by-wire system, in which, in particular, detection devices and implementation devices for a steering request are mechanically decoupled from one another, having: a first steering system for providing a steering function, which is designed to be autonomous and / or has a first energy supply; a second steering system for providing a first fallback level for the steering function, which is designed to be autonomous and / or has a second energy supply; and a third steering system for providing a second fallback level for the steering function, in particular through selective wheel braking.

A computer system comprising processing circuitry to handle brake strategies for a braking arrangement of a vehicle is provided. The braking arrangement has a first brake strategy. The processing circuitry obtains one or more brake strategy parameters. The one or more brake strategy parameters is indicative of a status of the braking arrangement and / or one or more environmental parameters of a road travelled by the vehicle. The processing circuitry is configured to, based on a motion of the vehicle and the one or more brake strategy parameters, select a second brake strategy out of the set of brake strategies for the braking arrangement to use. The processing circuitry triggers the braking arrangement of the vehicle to transition from the first brake strategy to the second brake strategy.

A number of variations may include a system, method, a non-transitory computer readable medium having instructions thereon executable by an electronic processor to implement functionality comprising enhancing the curvature capability of a tertiary rack and pinion actuator by using brake-to-steer while the tertiary rack and pinion actuator is operating.

Diagnostic systems and methods utilize existing sensors on an engine and / or within a vehicle to detect and / or diagnose malfunctions or failures with an air pressure limiting valve. By analyzing and comparing in-vehicle and on-engine sensors data, as well as engine control maps, malfunctions and / or failures to the air pressure limiting valve and / or leaks in the air flow within the air pressure system are detectable.

A system for destructive braking system for an autonomous truck traveling on a roadway includes an electronic control unit (ECU) configured for controlling a transmission for the autonomous truck. The destructive braking system includes a processing system communicatively coupled to the ECU, the processing system including a processor coupled to a memory. The memory stores executable instructions that, upon execution by the processor, configure the processor to receive an indication the autonomous truck will unavoidably collide with an object. The processor is further configured to determine to employ destructive braking. The processor is further configured to instruct the ECU to reverse the transmission to reduce momentum of the autonomous truck.

The embodiment of the invention relates to the technical field of vehicles, and discloses an electronic mechanical brake control system which comprises at least four wheel side control units. The plurality of wheel side control units are respectively arranged on four wheels of the vehicle; the plurality of wheel side control units are in communication connection with the chassis domain control unit through a high-speed bus; the wheel side control unit comprises a micro-control unit, a power management module, a driving module, a network communication module and a sensor interface, and the power management module, the driving module, the network communication interface and the sensor interface are all electrically connected with the micro-control unit. According to the electronic mechanical brake control system in the embodiment of the invention, the sensor and the actuator in the wheel side area are fused and connected into the wheel side control unit or directly integrated, so that centralized control of the wheel side system is realized.

A system for monitoring the integrity of a convoy of vehicles is described. The convoy comprises a first vehicle (V1) and at least one second vehicle (V2), connected to the first vehicle (V1), a communication line (204) arranged to be installed in the first vehicle (V1) and in the at least one second vehicle (V2), and a power supply line (206) arranged to be installed in the first vehicle (V1) and in the at least one second vehicle (V2). The system comprises electronic control means (208) arranged to be installed in the second vehicle (V2) and to: - verify whether the communication line (204) is interrupted and verifying whether the power supply line (206) is interrupted; - when, from the verifications, the electronic control means determine that both the communication line (204) and the power supply line (206) are interrupted, determine that the second vehicle (V2) has disconnected from the first vehicle (V1). A corresponding method is also described.

A method for automatically verifying a coupling between a tractor and a first trailer unit, the method comprising engaging a wheel brake on the first trailer unit, generating a propulsion torque by the tractor, determining a first coupling force between the tractor and the first trailer unit, and verifying the coupling between the tractor and the first trailer unit based on the determined first coupling force.

A method for operating a vehicle includes receiving brake sensor data indicating the measured actuator outputs of the brake actuators of a decentralized braking system. For each brake actuator, a vehicle controller calculates: a normalized corner output using the measured actuator output and a commanded target output for that brake actuator, and a weighted average using the normalized corner output of that brake actuator and a vehicle-calibrated weight value determined from the vehicle's current speed and steering angle.The control unit calculates a percentage actuator error as the absolute value of a mathematical difference between the weighted averages of the brake actuators and detects an actuator error when the percentage actuator error exceeds a vehicle-calibrated error deviation threshold, which is determined from the vehicle's current speed and steering angle. In response to the error percentage exceeding the error deviation threshold, the control unit commands the braking system to execute a braking action to correct the actuator error.

The present invention refers to a method for providing a multi-lane scenario driving support for an ego vehicle (10) in a traffic situation. Traffic surroundings are measured by an environment sensor system (14), whereby the traffic surroundings include data about traffic and free space within an ego lane (16) of the ego vehicle (10) and at least an adjacent lane (12a, 12b), and data about front proximity area (18) and rear proximity area (20) of the ego vehicle (10). A decision device (22) evaluates the measured traffic surroundings and decides a driving operation to be executed by the ego vehicle (10) based on at least one strategy. In the decision device (22) a cost function is used for choosing one of at least six strategies, the cost function being based on at least a core priority, whereby the core priority is to avoid collision of the ego vehicle (10) and not cause collision of the ego vehicle (10) with a third party vehicle (24). The decision device (22) by means of the cost function chooses one of at least the following six strategies: braking in the ego lane (16), to combine braking and steering within the ego lane (16) of the ego vehicle (10), steering within the ego lane (16) of the ego vehicle (10) to avoid an obstacle, to full-brake in the ego lane (16) of the ego vehicle (10), to combine braking and steering towards or when entering temporarily an adjacent lane (12a, 12b) and steering towards or when entering temporarily an adjacent lane (12a, 12b).

The application provides a steering mode switching method and device, a vehicle and a storage medium. The vehicle is independently controlled by an electronic mechanical braking system for each wheel. The method is applied to the technical field of the vehicle. The method comprises the following steps: determining whether the expected steering mode of a user obtained and the current steering mode of the vehicle are the same. When the current steering mode and the expected steering mode are different, the current vehicle speed and the current wheel speed of each wheel are obtained. Then, it is determined whether the vehicle meets the steering switching condition. When the vehicle meets the steering switching condition, the vehicle is switched from the current steering mode to the expected steering mode by the braking force of the obtained multiple wheels of the vehicle. The method can make the vehicle switch from any steering mode to the expected mode required by the user when the switching condition is met, thereby effectively reducing the steering operation burden of the user, improving the stability of the vehicle steering and the driving experience of the user.

A vehicle includes a battery, a motor driving a wheel, an inverter converting DC power from the battery to AC power and suppling the AC power to the motor, a charging terminal connected to the battery when the battery is charged and connected to a coil of any one phase of the motor, an electrical device driven by a first voltage from the battery when the battery supplies power and driven by the first voltage boosted by the motor and the inverter when the battery is charged at a second voltage lower than the first voltage, a control unit controlling charging of the battery, and a brake mechanism restricting rotation of the wheel. The control unit activates the brake mechanism when the control unit detects that a charging plug is fitted to the charging terminal and detects that a charging voltage of the battery is the second voltage.

An electro-pneumatic central pressure control module, having at least two channels, implemented as a structural unit for an electro-pneumatic service brake of a vehicle, having at least two pressure control channels which are electrically controllable with regard to a brake pressure. A central electronic brake control device has a board, carrying electrical and electronic components, in which routines at least for controlling the brake pressure and for controlling the driving dynamics are implemented in the electrical and electronic components. At least one inertial sensor is arranged on or at the at least one board and is electrically conductively connected to at least several of the electrical and electronic components on the board so that the output signals of the at least one inertial sensor are integrated into the at least several electrical and electronic components for carrying out the control of the driving dynamics.

A road surface detection system, in one example the system includes a hydraulic unit of an anti-lock braking system, the hydraulic unit including a preload adjuster, and a plurality of pressure sensors configured to generate pressure sensor data. The system also includes a controller configured to receive the pressure sensor data from the plurality of pressure sensors, determine a target preload pressure level, compare the pressure sensor data with the target preload pressure level to calculate a pressure differential between the pressure sensor data and the target preload pressure level, determine a road surface based upon the calculated pressure differential, and regulate the preload adjuster to change the pressure within the hydraulic unit based upon the road surface.

Methods (400, 500) for power transmission, comprising: Setting a clutch torque (612, 712) of a clutch (191) of a differential (193) that drives a first wheel (131) and a second wheel (131), in response to a difference between a braking torque of the second wheel (131) and a braking torque of the first wheel (131); and Setting a regenerative torque of an electric machine (120) in response to the braking torque of the first wheel (131) and the braking torque of the second wheel (131) and the clutch torque (612, 712).

The present invention relates to a method for decelerating a motor vehicle with single wheel ruts, the method comprising the following steps: a) determining, by means of a control unit (22) of the motor vehicle, the total torque (GM) required for a desired driving manoeuvre of the motor vehicle wheels (12); b) deriving, by the control unit (22), a brake partial torque (B) and an engine partial torque (M) from the required total torque (GM); and c) generating the brake partial torque (B) on the wheels (12) by means of the control unit (22) controlling the braking device of the motor vehicle, and generating the engine partial torque (M) on the wheels (12) by means of the control unit (22) controlling the engine of the motor vehicle. The present invention also describes a motor vehicle with single wheel ruts.

The invention relates to a vehicle control method (1) having the steps of: carrying out an early detection (17) of an unstable driving state (330) of a vehicle (300) at least using an actual variable (9) and a target trajectory (TSoll), wherein during the early detection (17), it is ascertained whether the unstable driving state (330) is an understeering (332) of the vehicle (300) or an oversteering (334) of the vehicle (300), and in response to the early detection (17): defining (40) a steering angle correction (41) for a target steering angle (δSoll), said steering angle correction (41) comprising a steering angle limitation (δlim) of an actual steering angle (δlst), which can be provided, if the unstable driving state (330) is an understeering (232) of the vehicle (300) and a counter steering angle (öcs), which is directed opposite the target steering angle (δSoll), if the unstable driving state (330) of the vehicle (300) is an oversteering (334); and steering (47) the vehicle (300) using the steering angle correction (41). The invention additionally relates to a vehicle control system (200), to a vehicle (300), and to a computer program product.