Patent application number | Description | Published |
20090043466 | Method and apparatus for controlling anteroposterior acceleration of a vehicle - A control apparatus controlling anteroposterior acceleration of a vehicle by controlling a motive power generation apparatus mounted on the vehicle, which is also provided with a staged transmission apparatus that operates on gear ratios. The motive power generation apparatus has an output shaft producing a rotation force in response to a command to be requested. The rotation force is transmitted to the drive wheels via the staged transmission apparatus. A feedback manipulated variable is calculated to control the production of the rotation force of the motive power generation apparatus so that an actual value of anteroposterior acceleration of the vehicle is controlled at a target value thereof. The calculated feedback manipulated variable is used as the command. When the staged transmission apparatus is in the switchover control of the gear ratios, the manipulated variable is is limited from being calculated (for example, stopped from being calculated). | 02-12-2009 |
20090043473 | APPARATUS FOR ESTIMATING ROAD SURFACE GRADIENT AND VEHICULAR CONTROL APPARATUS USING THE SAME - An apparatus is provided to estimate a gradient of a road surface on which a vehicle travels. The apparatus comprises acquisition, estimation, and compensation members. The acquisition member acquires at least one of acceleration of the vehicle calculated on changes in a travel speed of the vehicle and acceleration sensed from a force applied to the vehicle. The estimation means estimates the gradient of the road surface based on the acquired acceleration. The compensation member compensates the acquired acceleration in terms of influence of noise superposed on the acceleration, depending on an operational condition of the vehicle. The compensated acceleration is used by the estimation. The compensation is carried out by cutting off the noise by a filter, for example. | 02-12-2009 |
20090043474 | APPARATUS AND SYSTEM FOR CONTROLLING AUTOMATIC STOPPING OF VEHICLE - A control apparatus is provided to control the stopping of a vehicle. The control apparatus comprises a speed detector that detects a speed of a vehicle, speed acquiring means, target setting means, and control means. The speed acquiring means acquires an actual speed of the vehicle from detected results of the speed detector. The target setting means sets a target acceleration of the vehicle depending on the actual speed when the vehicle is stopped automatically. The control means controls an actual acceleration of the vehicle at the target acceleration. | 02-12-2009 |
20090048751 | Method and apparatus for controlling acceleration of a vehicle - A control apparatus controls acceleration of a vehicle provided with a motive power generation apparatus and brake apparatuses. For the control, the control apparatus comprises calculation and actuating blocks. The calculation block calculates torque to be requested, based on a difference between an actual value of the acceleration and a target value thereof and a gain for feedback controlling the actual value of the acceleration to the target value thereof. The gain is differentiated in value between in a first case in which the brake apparatuses are used for the feedback control and a second case in which the brake apparatuses are not used for the feedback control. The actuating block actuates the motive power generation apparatus and the brake apparatuses based on the calculated torque. The value of the gain in the first case is made larger than the value of the gain in the second case. | 02-19-2009 |
20100121549 | APPARATUS FOR CONTROLLING ACCELERATION OF VEHICLE - An apparatus is provided for controlling acceleration of a vehicle to a target acceleration. In the apparatus, a target acceleration calculator calculates the target acceleration. A provisional acceleration setting unit sets a provisional target acceleration such that a change rate of the provisional target acceleration is limited to a target limitation value. The provisional target acceleration is used during a step during which the acceleration of the vehicle is changed to the target acceleration. A drive power calculator calculates a drive power to obtain the provisional target acceleration. In the provisional acceleration setting unit, an initial value of the provisional target acceleration depends on a running state of the vehicle. | 05-13-2010 |
20100138123 | Running control apparatus and running control program for the apparatus - A running control apparatus calculates a target driving or braking torque in a calculating block to control the vehicle driven or braked by this torque at a target speed against a running resistance changed with running circumstances of the vehicle. In a control block, when a driver-required braking torque based on the braking operation of the driver is smaller than the target braking torque, the running control for the vehicle is performed to brake the vehicle by the target braking torque. When the driver-required braking torque becomes higher than the target braking torque, the running control is stopped, and the driver manually brakes the vehicle by the driver-required braking torque. When the driver-required braking torque is decreased to be lower than the target braking torque or a predetermined braking torque corresponding to the release of the braking operation, the running control is restarted. | 06-03-2010 |
20110066344 | Apparatus for arbitrating plurality of control requests relating to automatic control of vehicle motion - A control request arbitration apparatus of a vehicle includes respective sections for selecting one of a plurality of position control requests generated by control request apparatuses, for converting the selected position control request to a converted speed control request, for selecting one of a plurality of speed control requests including the converted speed control request, for converting the selected speed control request to a converted acceleration control request, and for selecting one of a plurality of acceleration control requests including the converted acceleration control request. Since position/acceleration and speed/acceleration conversion sections become unnecessary in control request apparatuses, the total of these sections becomes independent of the number of control request apparatuses. | 03-17-2011 |
Patent application number | Description | Published |
20080300766 | Cruise control system and method - In a cruise control system for a vehicle, a cruise ECU calculates a cornering resistance applied to the vehicle based upon a steering angle, when a vehicle turns. The cruise ECU calculates a speed reduction amount as a correction vehicle speed based upon the cornering resistance. The cruise ECU subtracts the correction vehicle speed from a set vehicle speed to set a target vehicle speed so that the vehicle speed becomes lower as the cornering resistance is larger. The cruise ECU controls the vehicle speed to be within a permissible speed range of the target vehicle speed. | 12-04-2008 |
20090024354 | Road gradient estimating system - An estimated gradient value of a road is calculated based on a vehicle acceleration “A” and a time varying portion “A′” of a wheel speed. In a case that an acceleration corresponding value “Ggrad0” for the estimated gradient value is not regarded as indicating an exact figure, due to influences of disturbances, the acceleration corresponding value “Ggrad0” is corrected by a limiting value for rate-of-change with regard to the road gradient depending on respective vehicle speed, and by a limiting value for the road gradient. As a result, the acceleration corresponding value “Ggrad” for the estimated gradient value can be more exactly obtained. | 01-22-2009 |
20090048755 | Vehicle speed control device and method - A vehicle speed control device calculates a desired axle torque for maintaining a speed of a vehicle to a set speed, and conducts cruise control. Specifically, the vehicle speed control device calculates a drive force including a feedforward component corresponding to the set speed and a travel resistance against the travel of the vehicle, and a feedback component corresponding to a deviation of the set speed from the actual speed of the vehicle as a desired axle torque. The vehicle speed control device interrupts the cruise control when a requested drive axle torque requested by an accelerator operation during the cruise control exceeds the desired axle torque, and restarts the cruise control when the requested drive axle torque becomes lower than the desired axle torque. | 02-19-2009 |