摘要:
To provide a surface modified implant made with titanium or a titanium alloy in which a bone bonding can be made easily and certainly as compared with conventional ones and treating method thereof, the surface of the implant made with titanium or the titanium alloy is treated with polyphosphoric acid and basic fibroblast growth factor (bFGF), and the method comprises treating with a polyphosphoric acid solution having a concentration of 0.05 to 70% by weight and with a basic fibroblast growth factor (bFGF) solution having a concentration of 1 to 500 ng/ml, or treating with a mixed solution having the concentration of the polyphosphoric acid of 0.05 to 70% by weight and the concentration of the basic fibroblast growth factor (bFGF) of 1 to 500 ng/ml.
摘要:
The present invention provides a route consideration apparatus which can reduce amount of road geometry data to a necessary and sufficient volume to be managed, foreseeing probable routes by selecting branch roads appropriately. The route assessor 5 designates three route at maximum, i.e., the first prior route to the third prior route, according to the data inputted from the navigator. The curve geometry detector 6 detects rode geometry according to inputted data from the navigator 3. Thus previewing of route to be traveled can be carried out effectively and the vehicle dynamic control system works well with the previewing function.
摘要:
A vehicle maneuvering control device is disclosed. A curve of a road is detected to calculate curve data including a distance between a vehicle and the curve, and a physical quantity indicating a degree of the curve. An allowable deceleration is set at which the vehicle can travel in accordance with conditions of the road. An allowable lateral acceleration is set at which the vehicle can travel in accordance with the conditions of the road. An allowable approaching speed is set at which the vehicle can approaches the curve based on the physical quantity and the lateral acceleration. A deceleration judging speed is calculated for judging whether a present speed at which the vehicle is traveling should be decreased based on the distance, the allowable deceleration and the allowable approaching speed. And, the present speed is decreased when it is higher than the deceleration judging speed.
摘要:
A radius of curvature detecting apparatus and method of a vehicle for detecting a radius of curvature of a curve based on road information obtained from a vehicle navigation system comprises, three-points detection of a first point, a second point and a third point in order of traveling direction of the vehicle from point data showing a road configuration which are provided by the vehicle navigation system, distance comparison of a distance of a straight line connecting the first point and the second point with a distance of a straight line connecting the second point and the third point and for determining a short straight line and a long straight line, respectively, mid-point calculation for finding a mid-point point located at a half distance of the short straight line from the second point, equivalent mid-point calculation for finding an equivalent mid-point located at the half distance from the second point on the long straight line, and radius of curvature calculation for determining a point of intersection of perpendicular lines from the mid-point point and the equivalent mid-point as a center of the curve and for calculating a radius of curvature based on the center of the curve. The calculated radius of curvature is corrected, for example when the road width is small or the distance of the short straight line is large.
摘要:
An apparatus for controlling an active suspension system for an automotive vehicle comprises hydraulic suspensions, control valves for independently controlling each of the suspensions and a controller for issuing a signal for controlling of opening/closing of the respective control valves. The apparatus includes a longitudinal g sensor for detecting a longitudinal acceleration of a vehicle body and a lateral g sensor for detecting a lateral acceleration of the vehicle. To calculate a control quantity relative to feeding of hydraulic fluid in and discharging of the hydraulic fluid from the respective suspensions required for suppressing pitching and rolling of the vehicle body, the apparatus further includes a control logic which in the controller. A control quantity derived from the circuits is added to another control quantity derived from a vertical g acceleration sensor and a vertical relative displacement sensor, and the resultant control quantity is delivered to the control valve for each suspension.
摘要:
An active suspension system of a vehicle has a feed back control system for controlling four suspensions for the four wheels to maintain a reference vehicle height responsive to detected vertical relative displacements between the wheels and the vehicle body at said suspensions, and a feed forward control system for controlling the suspension to reduce pitching of the vehicle responsive to detected longitudinal acceleration. There is further provided a circuit for changing the reference vehicle height which is responsive to the absolute value of the detected longitudinal acceleration or deceleration for reducing the reference vehicle height with increase of the absolute value so that the vehicle body is lowered while the pitching is maintained at a predetermined value so as to obtain better driver's sensation during vehicle acceleration and deceleration and to improve the performance of acceleration and deceleration.
摘要:
In a motor vehicle having a vehicle height adjusting device, wherein the height of each suspension is controlled so as to attain a set reference vehicle height, reaction forces of respective suspensions are detected and a difference between the detected reaction forces is calculated according to a formula, while the vehicle is stationary or is being driven straight. When the difference exceeds a predetermined value, it is determined that there are imbalances of the road surface contact loads of the wheels. Upon the determination of imbalances, the reference vehicle height is increased for some suspensions and decreased for other suspensions to eliminate the imbalances. The determination of imbalances is made when a value given by a formula including the integrated values for the suspensions exceeds a predetermined value, and then reference vehicle height is increased and decreased for the suspensions to eliminate the imbalances.
摘要:
An apparatus for adjusting height of a vehicle includes an incremental-type rotary encoder operated as a sensor for sensing the height of the vehicle. The incremental-type rotary encoder comprises a rotary disc having two sets of slits positioned at circumferential portions having different radii each other and different phase of 90.degree. in a rotating direction of the rotary disc. The incremental-type rotary encoder is further provided with a slit having a semi-circular shape disposed along a circumferential periphery thereof. A neutral position of an operation range of the rotary disc is determined as a boundary of the location of the semi-circular slit. The semi-circular slit is detected to discriminate whether height of the vehicle is above or below the neutral position of the rotary disc. A height adjusting mechanism is displaced in a vertical direction according to data from a detector. The apparatus controls the rotating direction and the amount of the rotation of the rotary disc.
摘要:
An active suspension of a motor vehicle is controlled by a system and a method which comprise combining a controller and an actual flow quantity estimation circuit for estimating by logic operation the flow quantity of the fluid actually flowing through each control valve of the suspension with respect to a total desired flow quantity, and calculating the difference between the actual flow quantity value thus estimated and the desired flow quantity, thereby correcting the desired flow quantity. A command signals is generated and transmitted in accordance with the desired flow quantity thus corrected for operating the control valve to undergo opening/closing operation.
摘要:
The present invention provides a vehicle dynamic control system which alters characteristics of respective vehicle movement controllers so that they can function properly against coming and foreseeable running conditions and current running conditions, recognizing beforehand details of an emerging curve on the road to be traveled. The system comprises a vehicle movement control alterant and at least one among vehicle movement controllers, i.e., a brake controller, a left/right wheel differential limiter controller and power distribution controller. When the vehicle is approaching the curve, the vehicle movement control alterant alters characteristics of a braking controller, the left/right wheel differential limiter controller and the power distribution controller to those favorable to turning for driving through a curve appropriately. When the vehicle is approaching the curve end, the alternate alters characteristics of the left/right differential controller to those favorable to stabilizing running so that the vehicle can pass the curve end and go into straight road appropriately.