Class / Patent application number | Description | Number of patent applications / Date published |
701040000 | Artificial intelligence (e.g., fuzzy logic) | 14 |
20090043452 | CONTROL APPARATUS OF A VARIABLE DAMPING FORCE DAMPER - A control apparatus of a variable damping force damper comprises first and second low-pass filters for cutting off high frequency components of a target current of the damper, where the first and second low-pass filters have different response characteristics. The control apparatus further comprises a low-pass filter selection unit for selecting one of the first and second low-pass filters based on at least one of the dynamic state of the vehicle body and the road surface condition. | 02-12-2009 |
20090292419 | SUSPENSION CONTROL APPARATUS - The present invention provides a suspension control apparatus capable of an excellent vibration control by a model thereof designed to incorporate nonlinearity and a time-lag element of a control damper. The present invention employs the backstepping method which is one of nonlinear control methods, and is designed so as to incorporate the nonlinearity of a damper | 11-26-2009 |
20090306853 | Method and device for the detection of a low-friction cefficient roadway - A method for detecting the presence of a low-coefficient of friction roadway, in which a group is specified that includes one or more predetermined types of driving situation, the at least twofold occurrence of a type of driving situation included in the group is ascertained, the same type of driving situation not necessarily having to be involved, and the presence of a low-coefficient of friction roadway is detected as a function of this. | 12-10-2009 |
20100023214 | VEHICLE CONTROL DEVICE - A vehicle control device which can provide compatibility between a high grip performance and fuel efficiency is provided. When a camber angle of a wheel | 01-28-2010 |
20110093166 | Temperature Compensation Method for an Air Suspension After Engine Shut-Off - A method for temperature compensating an air spring of an air spring suspension of a motor vehicle after engine shut-off. A desired trim height is obtained. At engine shut-off, the ambient temperature is measured and the temperature of air in the air spring determined. After a wait time (for loading/unloading), a start trim height is measured. A predicted trim height is determined for when the air in the air spring is at the ambient temperature. Finally, the volume of the air in the air spring is selectively adjusted so that when the air in the air spring arrives at the ambient temperature, the trim height will be about the desired trim height. | 04-21-2011 |
20110106381 | VEHICLE AND METHOD OF TUNING PERFORMANCE OF SAME - A method for tuning a vehicle's performance may include measuring a plurality of parameters representing the vehicle's current handling condition and the vehicle's limit handling condition, determining a margin between the vehicle's current handling condition and limit handling condition, characterizing the driver's dynamic control of the vehicle based on the margin, and altering at least one tunable vehicle performance parameter based on the characterization. | 05-05-2011 |
20130030650 | ACTIVE SUSPENSION SYSTEM - A method of controlling a vehicle suspension system including the steps of detecting, computing and altering the center of gravity of the vehicle. The detecting step includes the detecting of a center of gravity of the vehicle thereby defining a detected center of gravity. The computing step includes computing what alteration of a plurality of actuators is needed to substantially reduce a value of a difference between the detected center of gravity and a preferred center of gravity using a fuzzy relations control strategy. The computing step is carried out in a controller. The altering step includes altering the center of gravity of the vehicle by way of the controller actuating at least one of the actuators connected to suspension elements of the vehicle dependent upon the alteration arrived at in the computing step. | 01-31-2013 |
20130035825 | LOOK AHEAD VEHICLE SUSPENSION SYSTEM - An active suspension system senses roadway defects and adjusts an active and controllable suspension system of the vehicle before tires come in contact with the defect. The active suspension system identifies a type of defect or debris, e.g., pothole, bump, object, etc., along with the size, width, depth, and/or height information of the defect to more accurately control operation of the suspension system to prepare for, or avoid contact with the roadway defects and obstacles. Imaging techniques are employed to identify the defect or debris. Operation of a serviced cruise control system is controlled to enhance passenger safety and comfort. | 02-07-2013 |
20130158799 | SUSPENSION APPARATUS - When a preview sensor acquires undulation information regarding a convex portion of a road surface, an electric actuator expands during a predetermined period of time between that point and a point immediately before the wheel rides on the convex portion, whereby ascending velocity of a sprung member increase. Therefore, when the wheel rides on the convex portion, the sprung member reaches estimated unsprung ascending velocity as a result of the expansion of the electric actuator up to that point. Accordingly, in the case where the wheel rides on the convex portion and an unsprung member is pushed up, a change in the sprung vertical velocity caused by application of the pushing up force to the sprung member is reduced because the sprung member ascends at the estimated unsprung ascending velocity. Therefore, riding quality is improved. | 06-20-2013 |
20130197756 | CONTROL METHOD OF AN ACTIVE SUSPENSION OF A CAR - A control method for an active suspension of a vehicle, wherein the determination of an optimal camber angle of the active suspension includes the steps of: estimating the slip angle of the wheel of the active suspension; estimating the vertical force which weighs on the wheel of the active suspension; estimating the transverse force which is transferred to the ground by the wheel of the active suspension as a function of the slip angle of the wheel of the active suspension and as a function of the vertical force which weighs on the wheel of the active suspension; and determines the optimal camber angle as a function of the transverse force which is transferred to the ground by the wheel of the active suspension. | 08-01-2013 |
20130275003 | SUSPENSION CONTROL APPARATUS | 10-17-2013 |
20140107892 | SYSTEM AND METHOD FOR CONTROLLING A FLUID SUSPENSION SYSTEM - The present invention provides a control system operable to raise and lower the height of a vehicle based in part on the response characteristics of the vehicle's suspension and vehicle loading. The control system may develop a vehicle suspension system response by mapping a correlation between changes in air pressure of air springs in the vehicle's suspension and a test valve-open-time. During operation, the control system may predict a valve-open-time in response to a command relating to a target air pressure for the air springs, and then inflate or deflate one or more of the air springs for a duration substantially equal to the predicted valve-open-time. This process may be iterated until the control system achieves, within an acceptable degree of error, the target air pressure for the one or more air springs. | 04-17-2014 |
20140309883 | VEHICLE CONTROL DEVICE AND VEHICLE CONTROL METHOD - A vehicle control device includes a variable-damping-force shock absorber, a sprung vibration damping control device, an unsprung vibration damping control device, a driving state-determining device, a damping force distribution factor-calculating device, and a damping force control device that, when the driving state-determining device determines that the vehicle is traveling in a straight line, controls the damping force of the variable-damping-force shock absorber on the basis of a greater of an unsprung vibration damping control amount and a sprung vibration damping control amount, and that, when the driving state-determining device determines that the vehicle is turning, calculates the damping force control amount on the basis of an unsprung vibration damping control amount so as to maintain the damping force distribution factor, and controls the damping force of the variable-damping-force shock absorber on the basis of a greater of a calculated damping force control amount and the sprung vibration damping control amount. | 10-16-2014 |
20160137173 | GPS BASED LEARNED CONTROL EVENT PREDICTION - A global positioning signal based learned control event prediction method and apparatus includes a learning auxiliary module connected to a communication bus of a vehicle. The arrangement stores events and event locations using global positioning signals for a vehicle traveling along a path. When the vehicle travels the same path a second time, the detected events and event locations are determined. When the events match at the same event locations, a predictive action is determined for a future occurrence of the vehicle approaching the event location. Thus, as the vehicle approaches the event location, the predictive action, for example pre-filling of the vehicle brakes or pre-tensioning of the seat belts occurs. | 05-19-2016 |