239results about "Cruise control" patented technology

A driver assistance system and an operating method thereof are configured and adapted to perform autonomous longitudinal and / or lateral control of a vehicle. At least one control task for longitudinal and / or lateral control of the vehicle can be transferred from the driver to the driver assistance system. This involves informing the driver that a control task can be transferred to the system, and then transferring the control task from the driver to the system in response to the driver ceasing a manual control of this control task.

Energy consumption of a vehicle is optimized while traveling a route assembled of road segments between a first position and a destination. A speed profile generator is located at least partially off of the vehicle and uses an energy consumption model of the vehicle together with road grade data corresponding to the route to calculate an optimal speed profile. The speed profile specifies target speeds for respective locations on the route for traversing the route with an optimized energy consumption. The speed profile generator compares energy consumption for a plurality of feasible speed profile trajectories between a maximum trajectory and a minimum trajectory in order to identify the optimal speed profile. A speed updater is responsive to a current position of the vehicle and the optimal speed profile to initiate the target speed for the current position.

Vehicle control includes: acquiring running information of a preceding vehicle that runs ahead of a host vehicle; controlling a running state of the host vehicle on the basis of the acquired running information; acquiring deceleration jerk information of the preceding vehicle; and changing a deceleration start timing, at which the host vehicle is decelerated in response to deceleration of the preceding vehicle, on the basis of the deceleration jerk information of the preceding vehicle. Alternatively, vehicle control includes: acquiring deceleration jerk information of a preceding vehicle that runs ahead of a host vehicle; and changing an inter-vehicle time or inter-vehicle distance between the preceding vehicle and the host vehicle on the basis of the deceleration jerk information of the preceding vehicle.

A method for operating an automatic speed control system of an automotive vehicle. Initially, in a normal follow mode, a setpoint distance between the vehicle and a preceding vehicle is set to a first value d1, and a setpoint vehicle acceleration is into a first value a1. Upon detection of an intention of the vehicle driver to overtake the preceding vehicle (such as switching on a turn indicator), the setpoint distance is reset to a second value d2 that is smaller than d1. The setpoint acceleration may be reset to a second value a2 greater than a1 simultaneously, or the second value a2 may be set upon detection of initiation of a lane change into an overtaking lane (such as turning a steering wheel). The method assists the driver during the execution of an overtaking process, and a safer, more comfortable and free-flowing sequence of the overtaking process is ensured.

The present disclosure describes systems and methods for controlling the speed of a vehicle comprising: during a pulse phase of cruise control, applying engine torque to raise speed, the amount and duration of which being responsive to engine speed; and during a glide phase of cruise control, discontinuing engine combustion. In this way cruise control may maintain a mean speed equivalent to a desired, threshold speed while reducing fuel consumption, and NVH effects felt by the end user compared to traditional cruise control methods.

Systems and methods for predicting traffic signal information are provided. An exemplary method includes obtaining data from a plurality of types of sources and analyzing the data to predict states of a plurality of traffic signals. The data include crowdsourced data. The predictive traffic signal information may be used to adjust an operation of an on-board system of a vehicle.

An automatic driving system for a vehicle includes an external sensor and an electronic control unit. The electronic control unit is configured to estimate whether the vehicle peripheral information detected by the external sensor allows the vehicle to keep a vehicle target speed set on the basis of a vehicle travel plan or temporarily does not allow the vehicle to keep the vehicle target speed. The electronic control unit is configured to, when it is estimated that the vehicle peripheral information temporarily does not allow the vehicle to keep the vehicle target speed, generate a plurality of vehicle travel plans during a travel duration for which it is estimated that the vehicle peripheral information temporarily does not allow the vehicle to keep the vehicle target speed, and select one of the plurality of vehicle travel plans, which provides a lowest fuel consumption of an engine.

During execution of an auto cruise function, in response to selection of a power mode, when an measured accelerator opening Acc is less than a preset opening Accref, a hybrid vehicle of the invention sets a power mode cancellation flag Fpmc to 1 and a power mode enabling flag Fpm to 0 (steps S540 and S550). This prohibits the use of an accelerator opening setting map in the power mode for execution of the auto cruise function. In the power mode, in response to an instruction for enabling the auto cruise function, the hybrid vehicle keeps the power mode enabling flag Fpm to the setting of 1 (step S560) as long as the measured accelerator opening Acc is not less than the preset opening Accref. This allows the use of the accelerator opening setting map in the power mode for execution of the auto cruise function.

Provided is a speed limiter, wherein a vehicle speed is detected, and a speed limit displayed on a speed sign is detected based on an image captured by a front monitoring camera. A speed difference between the vehicle speed and the speed limit is calculated, and an accelerator sensitivity gain is set using the speed difference as a parameter. Then an accelerator opening degree is corrected with the accelerator sensitivity gain to obtain a pseudo accelerator opening degree. A target throttle opening degree is set based on the pseudo accelerator opening degree and an engine rpm.

A controller for predicting cruising speeds of a vehicle includes a processor and an extracting unit to extract feature data from segments of a prior trajectory of the vehicle, the feature data including cruising speeds of the vehicle and predictive feature data. The controller also includes a model generator to generate a probabilistic model associating the predictive feature data with the cruising speeds of the vehicle and a predicting unit to predict a cruising speed of the vehicle for a target segment, which is an upcoming cruising segment of the vehicle, by conditioning the probabilistic model on real-time predictive feature data of segments of a current trajectory.

The invention discloses a cruise control method of a vehicle. The vehicle comprises an engine unit, a speed changer unit, a first electric generator, an output part, a power switching device, a second electric generator and a power battery. The cruise control method comprises the following steps: judging whether the vehicle satisfies a preset cruise control condition or not when a signal that the vehicle enters a cruise control mode is detected; controlling the vehicle to enter the corresponding cruise mode according to the current working mode of the vehicle if the vehicle satisfies the preset cruise control condition, controlling the vehicle to enter the EV cruise mode when the current working mode of the vehicle is the EV mode, and controlling the vehicle to enter the HEV cruise mode if the current working mode of the vehicle is the HEV mode. By adopting the cruise control method, the combination of the selection of a drive mode and an automatic cruise function acquiring a constant speed can be realized so as to meet different driving requirements of the driver, convenience is brought to the driving, and the consumption of fuel can be reduced. The invention also discloses a vehicle.

Vehicle apparatus adjusts a vehicle powertrain of the vehicle in response to a speed setpoint. An optimizer selects a control policy to periodically generate speed adjustments for applying to the speed setpoint to operate at increased efficiency. The control policy is based on a value function providing an optimized solution for a cost model and a transition probability model. The transition probability model corresponds to a driving state defined according to a plurality of dimensions including a time-of-day dimension and a geographic region dimension. The transition probability model and the control policy have inputs based on road grade and speed. The optimizer collects road grade data during routine driving of the vehicle to construct a observed transition probability model and uses divergence between the observed transition probability model and a set of predetermined transition probability models to identify a control policy for use during the routine driving.

Methods and systems for controlling the speed of a host vehicle during an on-ramp merging situation. One method includes identifying a position of an upcoming on-ramp merging with a lane where the host vehicle is currently traveling based on lane markings identified in an image captured by a forward-facing image sensor mounted on the host vehicle, detecting a merging vehicle on the upcoming on-ramp, and determining a speed of the merging vehicle. The method also includes automatically, at a control unit, adjusting a speed of the host vehicle based on the speed of the merging vehicle.

The embodiment of the invention discloses a vehicle following control method and a device, a vehicle and a storage medium. The method comprises the steps that obtaining vehicle driving parameters andfront road information at the current moment; determining a vehicle following type according to the front road information, and determining a vehicle following parameter at the current moment under the vehicle following type; and determining a vehicle driving track according to the vehicle driving parameters and the vehicle following parameters, and controlling the vehicle to drive according to the vehicle driving track. According to the technical scheme provided by the embodiment of the invention, the problems that the transverse centering of the vehicle depends on the detection of lane linesby a camera under the control of a traffic jam auxiliary system, the system frequently exits when a complete lane line cannot be identified, and the transverse centering control is difficult to continuously carry out are solved, the safety of vehicle driving is improved, and the driving experience is improved.

An arrangement for adapting a cruise control system in a vehicle includes a cruise control modifier unit connected to a cruise control system, where the cruise control modifier unit includes a position input arrangement adapted to receive actual position information from a position source, a map input arrangement adapted to receive road information from a map database for a predefined section ahead of the vehicle, where the arrangement is adapted to modify cruise control parameters for a road section within the predefined section depending on the received position and map information. Behavior of the cruise control of a vehicle can be adapted to upcoming road profile changes, which makes it possible to optimize the fuel consumption of the vehicle.

Systems and methods for predicting traffic signal information are provided. An exemplary method includes obtaining data from a plurality of types of sources and analyzing the data to predict states of a plurality of traffic signals. The data include crowdsourced data. The predictive traffic signal information may be used to adjust an operation of an on-board system of a vehicle.

A method for stopping a motor vehicle, having an electronic environmental control device for evaluating the data of one or more environmental sensors, and an electronic braking control device for actuating a braking system, these exchanging information and / or instructions via a data bus. The method comprises: acquiring a distance to a vehicle travelling ahead; determining the motor vehicle travel speed; controlling the distance to the obstacle using the environmental control device if the travel speed exceeds a transfer threshold value; and stopping the motor vehicle using the braking control device if the travel speed is less than or equal to said transfer threshold value. Depending on the acquired distance, the environmental control device determines a target path for the braking control device at the end of which the motor vehicle should be stationary. The invention also relates to an electronic control device for a braking system, and a motor vehicle.

Vehicle apparatus includes a speed control for adjusting a vehicle powertrain of the vehicle in response to a speed setpoint. A grade estimator determines a road grade of a roadway where the vehicle is traveling. A traffic density estimator determines a density of traffic traveling on the roadway in the vicinity of the vehicle. An optimizer executes a selected control policy to periodically generate speed adjustments for applying to the speed setpoint to operate the vehicle powertrain at increased efficiency. The control policy is based on a value function providing an optimized solution for a cost model responsive to the determined road grade to generate an initial speed offset. The optimizer reduces the initial speed offset in proportion to the determined traffic density to generate the speed adjustments. The system minimizes negative impacts to overall traffic flow as well as any negative contribution to reduced fuel efficiency of surrounding traffic.

An apparatus and method for controlling a vehicle speed based on information about forward vehicles that travel in the same lane may be acquired using Vehicle to Everything (V2X) communications in a cooperative adaptive cruise control (CACC) system. The CACC system includes a communication unit receiving vehicle information from neighboring vehicles using V2V communications; an information collection unit collecting vehicle information of the neighboring vehicles and the subject vehicle using sensors; and a control unit determining a forward vehicle and a far-forward vehicle using the sensors,selecting first and second target vehicles for being followed by the subject vehicle based on the vehicle information of the forward vehicle and the far-forward vehicle and the vehicle information ofthe neighboring vehicles, and controlling the driving speed of the subject vehicle based on speed information of the first and second target vehicles.

A vehicle control apparatus is mounted to an own vehicle and controls the own vehicle such that an inter-vehicle distance between a preceding vehicle and the own vehicle becomes a reference distance. The vehicle control apparatus acquires passing suitability information indicating whether or not the own vehicle is able to pass the preceding vehicle. When the own vehicle is not able to pass the preceding vehicle, the vehicle control apparatus corrects the inter-vehicle distance by adding a correction distance to a reference distance.

A speed change control system includes a speed change control section for setting a speed change value of a stepless speed change device; a speed change operational tool for providing the speed change control section with a speed change command the stepless speed change device; a constant speed travel operational device for providing the speed change control section with a changing command for changing a constant speed mode speed change value which is a speed change value at the time of the constant speed mode, a shifting command for shifting to the constant speed mode and a departing command for departing from the constant speed mode; and a constant speed travel management section which causes the speed change control section to execute the constant speed mode with the constant speed mode speed change value, based on the shifting command from the constant speed travel operational device.

Disclosed is a technique for providing aerodynamic force information to improve gas mileage and driving stability of a vehicle. In particular, a plurality of pressure sensors are provided in a vehicle body and are configured to sense the pressure of air received from each of several points of the vehicle when the vehicle is driven. A first unit then calculates an air resistance value by measuring aerodynamic force data which the vehicle receives from air based on a pressure value of air sensed by the pressure sensor and driving information depending on the driving of the vehicle, and a method thereof.

A vehicle control apparatus includes a specification unit configured to specify a speed of an object located in front of an own vehicle and a distance between the object and the own vehicle, a calculation unit configured to calculate a target speed of the own vehicle on the basis of the speed of the object specified by the specification unit and a value based on the distance, and a traveling control unit configured to control traveling of the own vehicle on the basis of the target speed calculated by the calculation unit.

A control method for improving fuel efficiency in an adaptive cruise control system includes: setting a target velocity profile based on a current velocity and position when a vehicle is driven by the adaptive cruise control system; determining, by the controller, whether the preceding vehicle exists while driving by the target velocity profile; comparing, by the controller, a minimum distance for preventing a collision between the preceding vehicle and the following vehicle in a case of applying the target velocity profile with a first distance between the preceding vehicle and the following vehicle when the preceding vehicle exists; and performing, by the controller, fuel efficiency driving of the following vehicle when the minimum distance is larger than the first distance and performing driving of the following vehicle according to the target velocity profile when the minimum distance is smaller than the first distance.