1. A valve arrangement (1) for a shock absorber, said valve arrangement comprising:
a valve housing (2) comprising a first and a second port (7, 8);
a pilot chamber (3) being in fluid communication with said first andor second port, wherein a pilot pressure (Pp) is defined by a hydraulic pressure in said pilot chamber;
a main valve member (4) axially movably arranged in said valve housing and arranged to interact with a main valve seat (9) of said valve housing in order to restrict a main fluid flow (10) between said first and second ports in response to said pilot pressure acting on said main valve member;
a control valve member (5) axially movable within said main valve member in response to an actuating force acting on said control valve member;
a pilot valve member (6) axially movable within said control valve member, said pilot valve member being arranged to interact with a pilot valve seat (17) of said control valve member to restrict a pilot fluid flow (21) out from said pilot chamber;
wherein said pilot valve member (6) is resiliently loaded towards said pilot valve seat (17) relative said main valve member (4) or said valve housing (2), such that the resilient loading on said pilot valve member is adjustable in response to said actuating force.
2. A valve arrangement (201) for a shock absorber, said valve arrangement comprising:
a valve housing (202) comprising a first and a second port (207, 208);
a pilot chamber (203) being in fluid communication with said first andor second port, wherein a pilot pressure (Pp) is defined by a hydraulic pressure in said pilot chamber;
a main valve member (204) axially movably arranged in said valve housing (202) and being arranged to interact with a main valve seat (209) of said valve housing in order to restrict a main fluid flow between said first and second ports in response to said pilot pressure acting on said main valve member;
a control valve member (205) axially movable within said main valve member (204) in response to an actuating force acting on said control valve member;
a pilot valve member (206) axially movable within said control valve member (205), said pilot valve member being arranged to interact with a pilot valve seat (226) of said main valve member (204) or said valve housing to restrict a pilot fluid flow (221) out from said pilot chamber;
wherein said pilot valve member is resiliently loaded towards said pilot valve seat relative said control valve member, such that the resilient loading on said pilot valve member is adjustable in response to said actuating force.
3. The valve arrangement according to claim 1, further comprising an intermediate pilot valve member (539) arranged between said pilot valve seat (518) and said pilot valve member (506), wherein said intermediate pilot valve member is resiliently loaded towards said pilot valve member in a direction away from said pilot valve seat.
4. The valve arrangement according to claim 3, wherein said intermediate pilot valve member (539) is flexible and disc or plate shaped.
5. The valve arrangement according to claim 3, wherein said pilot valve seat (518) has a greater radial extent than said pilot valve member (506).
6. The valve arrangement according to claim 3, wherein said intermediate pilot valve member comprises a through hole (541) for fluid communication there through.
7. The valve arrangement according to claim 1, wherein said control valve member (105) comprises a first bypass valve portion (123), said first bypass valve portion being arranged to interact with a second bypass valve portion (124) of said main valve member (104) to define a bypass restriction on a bypass flow (127) between said first and second ports, wherein said bypass restriction is adjustable in response to said actuating force.
8. The valve arrangement according to claim 7, wherein the second bypass valve portion comprises an inner edge (125) of said main valve member.
9. The valve arrangement according to claim 7, wherein the first bypass valve portion comprises an edge (125) of a recess in said control valve member.
10. The valve arrangement according to claim 9, wherein said recess comprises an annular groove.
11. The valve arrangement according to claim 7, wherein the first bypass valve portion comprises a lower edge portion (643) of said control valve member.
12. The valve arrangement according to claim 1, wherein said main valve member (404) comprises a first lifting surface area (420) arranged to axially separate said main valve member from said main valve seat (409) in response to a hydraulic pressure in said first port (407), and a second lifting surface area (437) arranged to axially separate said main valve member from said main valve seat in response to a hydraulic pressure in said second port (408).
13. The valve arrangement according to claim 1, further comprising a first one-way valve (435) arranged to allow fluid flow solely in the direction from said second pilot valve portion to said first port (407), and a second one-way valve (436) arranged to allow fluid flow solely in the direction from said second pilot valve portion to said second port (408).
14. The valve arrangement according to claim 1, further comprising a third one-way valve (434) arranged to allow hydraulic fluid flow solely in the direction from said first port (407) to said pilot chamber (403), and a fourth one-way valve (434) arranged to allow hydraulic fluid flow solely in the direction from said second port to said pilot chamber.
21. The valve arrangement according to claim 1, wherein said main valve member (304) interacts with said main valve seat (309) to form a down-stream restrictor (329, 331) and an upstream restrictor (328, 330) in view of said main fluid flow, said downstream restrictor having a larger radial extent than said up-stream restrictor, thereby varying their restriction on the main fluid flow differently from each other in response to said pilot pressure acting on said main valve member.
22. The valve arrangement according to claim 21, wherein said main valve member comprises an annular groove to form first and second annular portions (328, 329), and wherein said main valve seat comprises an annular groove to form first and second annular valve seat portions (330, 331), said first annular portion of said main valve member being arranged to interact with said first annular seat portion to form said upstream restrictor, said second annular portion of said main valve member being arranged to interact with said second annular seat portion to form said down-stream restrictor.
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. A computer implemented method of constructing a cognitive fingerprint, comprising:
identifying a set of multiple time frames, each time frame corresponding to a respective data source, within which data is extracted by a computer system;
providing a plurality of pattern recognizers each having an assigned heuristic specific to a type of content;
processing, by the computer system, a combined stream of extracted data through the plurality of pattern recognizers to generate an initial set of elements, each element corresponding to an output of the heuristic assigned to each pattern recognizer;
extracting identified relationships amongst the initial set of elements;
modifying the initial set of elements to include the identified relationships to create an intermediate set of elements;
comparing, by the computer system, the intermediate set of elements against assigned values to emphasize or deemphasize each element in the intermediate set of elements to create a final set of elements; and
using the final set of elements as a cognitive fingerprint representing a signature of the data extracted from the time frame, so that the signature can be compared to other cognitive fingerprints for further analysis.
2. The computer implemented method of claim 1, further comprising:
executing, by the computer system, an action when the final cognitive fingerprint is within a certain threshold of a goal state.
3. The computer implemented method of claim 2, further comprising:
clustering, by the computer system, the final cognitive fingerprint with other cognitive fingerprints identified with the goal state.
4. The computer implemented method of claim 1, wherein the output of the heuristic is a numerical value.
5. The computer implemented method of claim 4, wherein the output of all heuristics are normalized amongst each other.
6. The computer implemented method of claim 4, wherein one of the relationship tests is an inverse test.
7. The computer implemented method of claim 4, wherein one of the relationship tests is a correlation test.
8. The computer implemented method of claim 1, wherein the final cognitive fingerprint is used to predict an impending machine failure in a condition based maintenance application.
9. The computer implemented method of claim 1, wherein the final cognitive fingerprint is used to identify or predict the presence of malware.
10. The computer implemented method of claim 1, wherein the final cognitive fingerprint is used to identify or predict the presence of a system anomaly.
11. A computer system, comprising:
a processor; and
memory coupled to the processor and storing instructions that, when executed by the processor, cause the computer system to:
identify a set of multiple time frames, each time frame corresponding to a respective data source, within which data is extracted;
provide a plurality of pattern recognizers each having an assigned heuristic specific to a type of content;
process a combined stream of extracted data through the plurality of pattern recognizers to generate an initial set of elements, each element corresponding to output of the heuristic assigned to each pattern recognizer;
extract identified relationships amongst the initial set of elements;
modify the initial set of elements to include the identified relationships to create an intermediate set of elements;
compare the intermediate set of elements against assigned values to emphasize or deemphasize each element in the intermediate set of elements to create a final set of elements; and
use the final set of elements as a cognitive fingerprint representing a signature of the data extracted from the time frame, so that the signature can be compared to other cognitive fingerprints for further analysis.
12. The computer system of claim 11, wherein the memory further stores instructions to cause the processor to execute an action when the final cognitive fingerprint is within a certain threshold of a goal state.
13. The computer system of claim 12, wherein the memory further stores instructions to cause the processor to cluster the final cognitive fingerprint with other cognitive fingerprints identified with the goal state.
14. The computer system of claim 11, wherein the output of the heuristic is a numerical value.
15. The computer system of claim 11, wherein the output of all heuristics are normalized amongst each other.
16. The computer system of claim 11, wherein one of the relationship tests is an inverse test.
17. The computer system of claim 11, wherein one of the relationship tests is a correlation test.
18. The computer implemented method of claim 1, wherein the final cognitive fingerprint is used to predict an impending machine failure in a condition based maintenance application.
19. The computer system of claim 11, wherein the final cognitive fingerprint is used to identify or predict the presence of malware.
20. The computer system of claim 11, wherein the final cognitive fingerprint is used to identify or predict the presence of a system anomaly.