1. A brake control device for a vehicle having a wheel speed sensor, comprising:
a first means for calculating a required brake axle torque being an axle torque required to brake of the vehicle, wherein a microcomputer serves as the first means;
a second means for causing a brake device of the vehicle to generate a brake pressure corresponding to the required brake axle torque calculated by the first means, wherein a microcomputer serves as the second means,
wherein the first means:
calculates the required brake axle torque so that the required brake axle torque comes closer to zero in accordance with deceleration of the vehicle when the vehicle decelerates on an ascending slope; and
at a start timing after calculating the required brake axle torque, determines a final value which is farther apart from zero than the initial value is, and a correction duration, and causing the required brake axle torque to change from the initial value to the final value during the correction duration from the start timing, wherein:
the final value is a torque with which the vehicle can stop at the ascending slope; and
the correction duration is a period from a limit time to a stop time, the limit time being a last moment of a period in which the detected vehicular speed of the vehicle detected based on a detection signal of the wheel speed sensor is equal to or larger than a minimum detectable vehicular speed, the stop time being a time at which an actual speed of the vehicle becomes zero, and the stop time being estimated based on change in a detected vehicular speed at or before the limit time.
2. The brake control device according to claim 1, wherein the start timing is a timing at which the speed of the vehicle on the ascending slope becomes smaller than the minimum detectable vehicular speed.
3. A brake control device installed to a vehicle, comprising:
a target acceleration setting portion for determining a target acceleration which the vehicle should achieve, wherein a microcomputer serves as the target acceleration setting portion; and
a brakingdriving cooperative control portion for calculating, based on the target acceleration determined by the target acceleration setting portion, a required powertrain axle torque required to power the vehicle and a required brake axle torque required to brake the vehicle, transmitting the calculated required powertrain axle torque to a powertrain axle torque realizing portion which performs control so that the powertrain of the vehicle generates the required powertrain axle torque, and transmitting the calculated required brake axle torque to a brake axle torque realizing portion which performs control so that a brake device of the vehicle generates a brake pressure corresponding to the required brake axle torque, wherein a microcomputer serves as the brakingdriving cooperative control portion, wherein:
a microcomputer serves as the powertrain axle torque realizing portion,
a microcomputer serves as the brake axle torque realizing portion,
the target acceleration setting portion calculates, when a speed of the vehicle on an ascending slope decreases to become equal to or smaller than a border vehicular speed, a negative soft acceleration which comes closer to zero in accordance with deceleration of the vehicle, identifies the calculated soft acceleration as the target acceleration, and keeps the soft acceleration constant after the vehicular speed becomes smaller than a minimum detectable vehicular speed of the wheel speed sensor;
the brakingdriving cooperative control portion determines, at a timing at which the speed of the vehicle on the ascending slope becomes smaller than a minimum detectable vehicular speed of the wheel speed sensor, a negative initial value of the required brake axle torque, a negative final value, and a correction duration, and causes the required brake axle torque to change from the initial value to the final value during the correction duration from the timing;
the initial value is a required brake axle torque determined based on the target acceleration;
the final value is a torque with which the vehicle can stop at the ascending slope; and
the brakingdriving cooperative control portion estimates a stop time at which an actual speed of the vehicle becomes zero based on a detected vehicular speed at a limit time and a detected acceleration of the vehicle calculated by the detected vehicular speed, the limit time being a last moment of a period in which the detected vehicular speed of the vehicle detected based on a detection signal of the wheel speed sensor is equal to or larger than a minimum detectable vehicular speed, and the brakingdriving cooperative control portion identifies a period from the limit time to the stop time as the correction duration.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. Apparatus for use with wooden in-ground posts having a portion extending below ground level and a portion extending above ground level, comprising:
a waterproof sleeve surrounding the below ground portion of said post and a portion of said sleeve extending above the ground level;
a waterproof collar adapted for being wrapped around said post and having a lower edge on or adjacent to the ground level, an upper edge sealed against said post, and a lower section that is spaced apart from said post around said post, wherein said portion of said sleeve that extends above the ground level is contained in the lower portion of said collar that is spaced apart from said post.
2. The apparatus according to claim 1 including plural holes in said collar opening into said lower portion of said collar that is spaced apart from said post.
3. The apparatus according to claim 2 wherein said collar includes an interior wall that is spaced apart from said post, and including a lip formed on the interior wall below said plural holes.
4. The apparatus according to claim 3 wherein said lip has a distal end and the distal end is spaced apart from said post.
5. The apparatus according to claim 4 wherein said portion of said sleeve that extends above the ground level is contained in the lower portion of said collar that is spaced apart from said post, below said lip.
6. The apparatus according to claim 5 including a fluid flow path from the spaced apart portion past said lip and through said plural holes.
7. The apparatus according to claim 3 wherein said lip is positioned relative to said plural holes to block sunlight entering through said holes from impinging on said sleeve.
8. The apparatus according to claim 7 wherein said lip is position relative to said plural holes to prevent watering from entering the lower portion of said collar that is spaced apart from said post.
9. The apparatus according to claim 1 wherein said collar includes a circumferential seat between the upper edge and the lower portion and including a fastener extending around said collar in said circumferential seat.
10. The apparatus according to claim 1 wherein the collar defines a wall thickness and the wall thickness at the lower section is relatively less than the wall thickness at the upper edge.
11. Apparatus for use with wooden in-ground posts having a portion extending below ground level and a portion extending above ground level, comprising:
a waterproof sleeve adapted for surrounding the below ground portion of said post wherein a portion of said sleeve extends above the ground level to define a space between the post and said sleeve, said sleeve having an open top, a closed bottom and closed sidewalls, and a circumference greater than the circumference of the in-ground post;
a waterproof collar adapted to be wrapped around said post at the ground level and having a lower edge on or adjacent to the ground level, an upper edge sealed against said post, and a lower section that is spaced apart from said post around said post around the circumference thereof, wherein said portion of said sleeve that extends above the ground level is contained in the lower portion of said collar that is spaced apart from said post, and said waterproof collar defining a fluid flow path from the space between the post and the sleeve; and said waterproof collar including water and light blocking means for preventing water and light from outside of said collar from entering the space between the post and the sleeve.
12. The apparatus according to claim 11 wherein the fluid flow path from the space between the post and the sleeve is defined by plural holes in said collar opening into said lower portion of said collar that is spaced apart from said post.
13. The apparatus according to claim 12 wherein said light blocking means for preventing water and light from outside of said collar from entering the space between the post and the sleeve is defined by an interior wall that is spaced apart from said post with a lip formed on the interior wall below said plural holes and extending circumferentially around said collar.
14. The apparatus according to claim 13 wherein said lip has a distal end and the distal end is spaced apart from said post.
15. The apparatus according to claim 14 wherein said lip is positioned relative to said plural holes to block sunlight entering through said holes from impinging on said sleeve.
16. A method for use with a wooden in-ground post having a portion extending below ground level and a portion extending above ground level, for extending the effective life of said post, comprising the steps of:
a) forming a hole in the ground for receiving said post;
b) providing a post;
c) covering a lower portion of said post with a waterproof sleeve and inserting said post in said hole so that a portion of said waterproof sleeve extends above the ground level;
d) in-filling the hole;
e) wrapping a waterproof collar having opposite ends around said post so that a bottom edge of the collar is on or adjacent to ground level, mating the opposite ends of said collar and securing the collar to the post so that an upper portion of said collar is sealed against said post and a lower portion of said collar is spaced apart from said post, and wherein a portion of said waterproof sleeve that extends above the ground level is captured between the collar and the post in the spaced apart portion.
17. The method according to claim 16 including the step of providing holes in said collar in said spaced apart portion to define a fluid flow path from said post into said spaced apart portion and through said holes.
18. The method according to claim 16 of allowing moisture from said post to evaporate therefrom through the fluid flow path.
19. The method according to claim 18 including the step of blocking light and water from entering said spaced apart portion.
20. The method according to claim 16 wherein the step of securing the collar to the post includes the step of wrapping a tie around the upper portion of the collar and tightening the tie against the collar.