Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Jae Sung Bang

Sang Joon Kim

Jeong Soo Eo

Chan Ho Lee

Ho Kyun Chun

Won Woo Suh

Yong Kim

Tae Hee Jung

Hong Chul Shin

Hong Kee Sim

Hee Yun Lee

Dong Hyeon Woo

Young Min Yun

Jae Kyu Hyun

Youngkwan Ko

Ho Won Seo

Seok Hwan Choi

Dae Woong Hwang

Dae Ki Hong

Daw Ki Hong

Proposed is a system for enabling a vehicle to perform a circuit mode. The system includes a communication unit provided in the vehicle to communicate with a vehicle-external device, a service providing server provided in the vehicle-external device to provide information related to a circuit, a controller which recognizes a current position of the vehicle by receiving a signal related to a vehicle position and which determines whether the vehicle arrives at the circuit based on the current position of the vehicle and the information related to the circuit received from the service providing server via the communication unit, the controller being configured to perform control for a circuit guide function that provides guide information related to the circuit mode and circuit driving when the vehicle enters the circuit mode, and an input/output unit outputting and providing the guide information to a driver by controlling the controller.

System for enabling a vehicle to perform a circuit mode

A system for providing a speed profile of a self-driving vehicle includes a vehicle driving information prediction device, and a speed profile generation device, wherein the vehicle driving prediction device includes a navigation unit configured to set information on a drive route and a target travel time, a 3D map information provision unit configured to search for gradient information of the drive route set by the navigation unit, and a vehicle driving information provision unit, and wherein the speed profile generation device includes a vehicle energy consumption calculation unit configured to calculate energy consumption at a current speed of the vehicle when the vehicle runs along the set drive route, and a speed profile calculation unit configured to calculate a distance-based target speed profile by executing a dynamic programming algorithm.

System and method for providing speed profile of self-driving vehicle

A method and an apparatus for controlling an engine clutch are provided. The method includes determining whether an engine start condition is satisfied when an engine is stopped and performing an engine cranking operation by operating a hybrid starter & generator (HSG) when the engine start condition is satisfied. Whether an engine speed is greater than or equal to a first reference speed is determined to thus reduce an HSG torque. Then, whether the engine speed is greater than or equal to a second reference speed is determined to thus calculate a target speed of the engine. A speed control of the engine is performed using the target speed of the engine while determining whether an engine clutch engagement condition is satisfied. An engine clutch is engaged when the engine clutch engagement condition is satisfied.

Apparatus and method for controlling engine clutch

A method for controlling gear shifting of a hybrid electric vehicle, which is configured for reducing gear-shifting time, minimizing loss by a drive system, improving fuel efficiency and enhancing drivability and which enables a driver to feel a change in acceleration when the driver manipulates the accelerator pedal during power-on upshift active control operation may include speed control of the driving source of the vehicle based on a change rate of a transmission input speed and feedforward control of the clutch of the engagement element in the transmission, to which a driver requested torque is reflected, which are performed at the same time during power-on upshift active control operation, facilitating the driver to feel a change in acceleration which is produced by his or her driving manipulation.

Method for controlling gear shifting of hybrid electric vehicle

The present disclosure provides a shift control method for a hybrid electric vehicle including: controlling a speed of a vehicle driving source; simultaneously controlling a release element and a connection element in a transmission based on a rotation acceleration of a transmission output shaft when shifting by a power-on down shift.

Shift control method for hybrid electric vehicle

A DCT shifting control method of a vehicle includes: a temporary engaging step that engages an N-3 stage gear having a gear ratio larger than an N stage gear that is a currently engaged gear; a first torque switching step that starts to slip a first clutch engaged with the N-3 stage gear and disengages a second clutch engaged with the N stage gear that is the currently engaged gear; a synchronization speed adjusting step that synchronizes a speed of a power source of a vehicle with a desired input shaft speed by controlling the power source of the vehicle, disengages the N stage gear, and engages the N-2 stage gear that is the desired gear, with the slip of the first clutch maintained; and a second torque switching step that finishes shifting by disengaging the first clutch and engaging the second clutch.

DCT shifting control method for vehicle

An anti-jerk control system and method of an eco-friendly vehicle are provided to prevent a driver from sensing a difference in vehicle starting at an initial stage when the vehicle is parked on a downhill road. The anti-jerk control method uses a motor as a driving source and includes calculating an actual speed of the motor, calculating a model speed of the motor, and acquiring a gradient of a road, on which the vehicle is located, using a gradient detector. Additionally, the method includes determining a speed offset value that corresponds to the acquired gradient, compensating the model speed by the speed offset value, and calculating a motor vibration component using a difference between the compensated model speed and the actual speed of the motor. Then, anti-jerk compensation torque is calculated using the calculated motor vibration component.

Anti-jerk control system and method of eco-friendly vehicle

The present disclosure relates to a shift control apparatus of a vehicle and its method. In particular, the shift control apparatus includes: a transmission including a first clutch and a second clutch; a torque source to generate power for driving a vehicle; a data detector to detect a vehicle state data; and a vehicle controller to connect a current stage synchronizer to a next stage driving gear if the vehicle state data satisfy a shift condition, release the first clutch to be connected to the driving gear of a current stage, perform a speed control of a torque source while maintaining the second clutch connected to the driving gear of the next stage in a slip state, and release the second clutch and connect the first clutch if the vehicle stage data satisfy a speed control completion condition to complete a shift to a target stage.

Shift control apparatus and method of vehicle

A shift control method of an automatic transmission may include determining, by a controller, whether a shift condition is satisfied, beginning, by the controller, release of an off-going element and engagement of an on-coming element when the shift condition is satisfied, determining, by the controller, whether a speed control entry condition is satisfied while performing the release of the off-going element and the engagement of the on-coming element, determining, by the controller, a target speed of a torque source when the speed control entry condition is satisfied, performing, by the controller, speed control of the torque source using the target speed of the torque source, determining, by the controller, whether a speed control completion condition is satisfied while performing the speed control, and completing, by the controller, the release of the off-going element and the engagement of the on-coming element when the speed control completion condition is satisfied.

Shift control method of automatic transmission and shift control apparatus using the method

A method for controlling an auto cruise speed of a vehicle includes: determining a feedback torque for correcting a speed error between a target speed set by a driver of the vehicle and a current speed that is a feedback speed detected by a speed sensor of a vehicle; determining a drive resistance according to the target speed by inputting the target speed; determining a first feedforward torque according to the determined drive resistance; determining a second feedforward torque based on a vehicle inertia and a variation of the target speed by inputting the target speed; and outputting a command for generating a wheel required torque that is corrected by adding the first feedforward torque and the second feedforward torque to the feedback torque.

Apparatus and method for controlling auto cruise speed of vehicle

Disclosed is a technique of correcting a resolver offset by measuring and correcting an offset of a resolver assembled to a motor of an eco-friendly vehicle in an accurate and simple way. The offset measurement process includes, after completing the assembly of a resolver a resolver to a motor, rotating the motor by using a rotation device able to transfer a rotation force to the motor, setting a voltage instruction and current-controlling the motor according to the voltage instruction, and obtaining a d-axis current and a q-axis current, which are feedback currents, during the current-control of the motor. Then when the system is in a steady state, a resolver offset ({tilde over (&#x3b8;)}) is calculated from the d-axis current and the q-axis current by using {tilde over (&#x3b8;)}=tan(d-axis current/q-axis current).

Technique for correcting resolver offset

A system and a method for controlling an engine clutch of a hybrid vehicle are provided which maintain the acceleration of the vehicle substantially constant before and after release of an engine clutch to prevent a driver from feeling a sense of difference due to a change in inertia when the engine clutch is released. When an engine clutch is released to transfer the driving mode of the vehicle from a hybrid electric vehicle (HEV) mode to an electric vehicle (EV) mode, the acceleration of the vehicle before and after release of an engine clutch is maintained substantially constant by adjusting motor torque to be decreased and gently adjusting the motor torque to be suitable for a driver request torque in the EV mode.

System and method for controlling engine clutch of hybrid vehicle

A method and system for controlling anti-jerk in order to reduce vibration of a vehicle is provided. More specifically, a rotation speed (&#x3c9;) of a driving source device of the vehicle is received and a speed (&#x3c9;, &#x3c9;) of a left wheel and a right wheel connected to the driving source device is detected by a sensor respectively. Then, a controller, which receives this data, calculates an average speed (&#x3c9;) based on the detected left and right wheel speeds, produces a virtual speed through interpolation of the detected left and right wheel speeds and the average speed based on a predetermined sampling value, and calculates a model speed (&#x3c9;) based on the detected left and right wheel speeds, the average speed, the virtual speed, and a final gear ratio (&#x3b3;; where j is the number of the gear) considering a final reduction gear ratio (FGR) and a current gear of the vehicle.

Method and system for controlling anti-jerk of vehicle

Disclosed are a method and system of controlling anti-jerk for reducing vibration of an electric vehicle using power of a motor. The method includes outputting an actual speed of the motor; outputting a model speed of the motor; obtaining a vibration component based on a deviation between the output motor speed and actual speed of the motor; high pass filtering the vibration component to remove an error component in the vibration component; delaying a phase of the filtered vibration component for a preset time to compensate for phase error occurring during the high pass filtering; and applying a preset gain to the vibration component in which the phase is delayed for the preset time to generate an anti-jerk compensation torque based on the applying of the preset gain.

Method and system for controlling anti-jerk of electric vehicle

Disclosed is a vibration control apparatus of a driving system for a vehicle. More specifically, a toque command generating portion receives a demand torque from a driver and generates a torque command for operating a motor. A torque control portion receives the torque command from the toque command generating portion, collects information on exterior disturbances, and controls an actual torque of the motor accordingly. Lastly, a damping portion extracts and filters a vibration element generated due to operation of the motor by control of the torque control portion and generates a target torque to eliminate vibrations from the motor.

Growing community of inventors

Gyeonggi-do, South Korea

Jae Sung Bang