A cantilever control system including: a cantilever control arm having a bifurcated section for its attachment to a stationary structure so as to provide resistance to off-center loading, a springy portion of the cantilever control arm disposed at the bifurcated section whereby spring redundancy is
A cantilever control system including: a cantilever control arm having a bifurcated section for its attachment to a stationary structure so as to provide resistance to off-center loading, a springy portion of the cantilever control arm disposed at the bifurcated section whereby spring redundancy is provided, and a rigid section of the cantilever control arm which includes a user interface portion (i.e., a foot pad or hand grip); a diversity of sensors in terms of types and locations; a coarse flexure control in the form of a contoured snubber which tunes the flexing stiffness and cantilever control arm flexure feel; and a plurality of fine flexure controls including at least one of: a flexure hysteresis control, an over-travel stop control, and a pre-load flexure control.
대표청구항▼
1. A cantilever control system, comprising: a cantilever control arm, comprising: a bifurcated first section comprising a pair of separate and mutually spaced apart legs, a springy portion of said arm being disposed at the legs of said bifurcated first section, said bifurcated section being adapted
1. A cantilever control system, comprising: a cantilever control arm, comprising: a bifurcated first section comprising a pair of separate and mutually spaced apart legs, a springy portion of said arm being disposed at the legs of said bifurcated first section, said bifurcated section being adapted for connection to a stationary structure; anda second section connected in affixed relation to said bifurcated first section, wherein said second section is relatively rigid in comparison with said springly portion;at least one sensor disposed to sense flexure force applied to said second section of said cantilever control arm;a first flexure control of said cantilever control arm comprising a snubber having a snubber surface contour which abuttingly interfaces with a springy portion surface contour of said springy portion when said cantilever control arm is flexed to thereby provide a predetermined stiffness rate of flexure of said springy portion; anda second flexure control of said cantilever control arm comprising a hysteresis control, wherein said hysteresis control comprises a leaf disposed adjoining said cantilever control arm, wherein said leaf fictionally slides against said cantilever control arm during flexing of said springy portion. 2. The cantilever control system of claim 1, wherein said snubber surface contour is curved, the combination of said snubber and springy portion surface contours providing said predetermined stiffness rate of flexure of said springy portion. 3. The cantilever control system of claim 1, wherein said springy portion surface contour is curved, the combination of said snubber and springy portion surface contours providing said predetermined stiffness rate of flexure of said springy portion. 4. The cantilever control system of claim 1, wherein said cantilever control arm flexes between a neutral position and a maximum flexed position; and wherein said second flexure control of said cantilever control arm further comprises a preload control comprising an abutment abutting said cantilever control arm when at the neutral position thereof such that a predetermined preload force must be applied to said second section in order to commence flexure of the springy portion. 5. The cantilever control system of claim 1, wherein said cantilever control arm flexes between a neutral position and a maximum flexed position; and wherein said second flexure control of said cantilever control arm further comprises a stop control comprising a stop abutment of said cantilever control arm with respect to the stationary structure when flexure is at the maximum flexed position. 6. The cantilever control system of claim 1, wherein said at least one sensor comprises at least one sensor disposed at at least one of said second section and said snubber. 7. The cantilever control system of Claim 1, further comprising a foot pad connected to said second section; wherein said at least one sensor comprises a plurality of sensors, at least one sensor being disposed at at least one of said second section, said snubber, and said foot pad. 8. The cantilever control system of claim 7, wherein the at least one sensor disposed at said foot pad comprises: a fluid filled sack in said foot pad; anda fluid pressure sensor sensing fluid pressure in said fluid filled sack. 9. The cantilever control system of claim 1, wherein said cantilever control arm comprises a brake pedal; further comprising: said second flexure control of said cantilever control arm further comprising at least one of a preload control and a stop control;a foot pad connected to said second section; andsaid at least one sensor comprising at least one sensor disposed at at least one of said second section, said snubber, and said foot pad. 10. The cantilever control system of claim 9, wherein the at least one sensor disposed at said foot pad comprises: a fluid filled sack in said foot pad; anda fluid pressure sensor sensing fluid pressure in said fluid filled sack. 11. The cantilever control system of claim 9, wherein: said cantilever control arm flexes between a neutral position and a maximum flexed position;said preload control comprises an abutment abutting said cantilever control arm when at the neutral position thereof such that a predetermined preload force must be applied to said second section in order to commence flexure of the springy portion; andsaid stop control comprises a stop abutment of said cantilever control arm with respect to the stationary structure when flexure is at the maximum flexed position. 12. The cantilever control system of claim 1, wherein said cantilever control arm comprises a hand lever; further comprising: said first flexure control of said cantilever control arm further comprising another said snubber, each said snubber being disposed at a respectively opposite side of said cantilever control arm, each said snubber having a surface contour which abuttingly interfaces with respective surface contours of said springy portion when said cantilever control arm is flexed respectively theretoward to thereby provide a predetermined stiffness rate of flexure of said springy portion;said second flexure control further comprising another leaf, each said leaf being disposed adjoining said cantilever control arm at respectively opposite sides thereof, wherein each said leaf fictionally slides against said cantilever control arm during flexing of said springy portion; andsaid at least one sensor comprising at least one sensor disposed at at least one of said second section and said pair of snubbers. 13. The cantilever control system of claim 12, further comprising a stationary structure; wherein: said cantilever control arm flexes between a neutral position, a first maximum flexed position on one side of said neutral position and a second maximum flexed position on the opposite side of said neutral position;said hysteresis control comprises a pair of leafs, each leaf disposed adjoining said cantilever control arm on an opposing side thereof, wherein a respective leaf fictionally slides against said cantilever control arm during flexing theretoward of said springy portion; andsaid stop control comprises a pair of stop abutments of said cantilever control arm with respect to the stationary structure when flexure is at the respective first and second maximum flexed positions with respect thereto. 14. A cantilever control system, comprising: a cantilever control arm, comprising: a bifurcated first section comprising a pair of separate and mutually spaced apart legs, said legs having a springy portion, said bifurcated first section being adapted for connection to a stationary structure; anda second section connected in affixed relation to said bifurcated first section, wherein said second section is relatively rigid in comparison with said springly portion;at least one sensor disposed to sense flexure force applied to said second section of said cantilever arm; anda first flexure control of said cantilever control arm comprising a snubber having a snubber surface contour which abuttingly interfaces with a springy portion surface contour of said springy portion when said cantilever control arm is flexed to thereby provide a predetermined stiffness rate of flexure of said springy portion;wherein said snubber surface contour is curved, the combination of said snubber and springy portion surface contours providing said predetermined stiffness rate of flexure of said springy portion. 15. The cantilever control system of claim 14, wherein said cantilever control arm comprises a brake pedal composed of a composite. 16. The cantilever control system of claim 14, wherein said cantilever control arm comprises a brake pedal composed of metal. 17. A cantilever control system, comprising: a cantilever control arm, comprising: a first section having a springy portion, said first section being adapted for connection to a stationary structure; anda second section connected with said springy portion, wherein said second section is relatively rigid in comparison with said springly portion;at least one sensor disposed to sense flexure force applied to said second section of said cantilever control arm;a first flexure control of said cantilever control arm comprising a snubber having a surface contour which abuttingly interfaces with a surface contour of said springy portion when said cantilever control arm is flexed to thereby provide a predetermined stiffness rate of flexure of said springy portion; anda second flexure control of said cantilever control arm comprising a hysteresis control, a preload control and a stop control, wherein said hysteresis control comprises a leaf disposed adjoining said cantilever control arm in parallel juxtaposed relation thereto, wherein said leaf frictionally slides against said cantilever control arm during flexing of said springy portion. 18. The cantilever control system of claim 17, wherein said cantilever control arm flexes between a neutral position and a maximum flexed position; and wherein said preload control comprises an abutment abutting said cantilever control arm when at the neutral position thereof such that a predetermined preload force must be applied to said second section in order to commence flexure of the springy portion. 19. The cantilever control system of claim 17, wherein said cantilever control arm flexes between a neutral position and a maximum flexed position; and wherein said stop control comprises a stop abutment of said cantilever control arm with respect to the stationary structure when flexure is at the maximum flexed position. 20. The cantilever control system of claim 17, wherein said at least one sensor comprises at least one sensor disposed at at least one of said second section and said snubber. 21. The cantilever control system of claim 17, wherein said cantilever control arm comprises a brake pedal; further comprising a foot pad connected to said second section; wherein said at least one sensor comprises a plurality of sensors, at least one sensor being disposed at at least one of said second section, said snubber, and said foot pad. 22. The cantilever control system of claim 21, wherein the at least one sensor disposed at said foot pad comprises: a fluid filled sack in said foot pad; anda fluid pressure sensor sensing fluid pressure in said fluid filled sack. 23. The cantilever control system of claim 17, wherein said cantilever control arm comprises a hand lever; said first flexure control of said cantilever control arm comprising a pair of said snubbers disposed at opposite sides of said cantilever control arm, each snubber having a surface contour which abuttingly interfaces with respective surface contours of said springy portion when said cantilever control arm is flexed respectively theretoward to thereby provide a predetermined stiffness rate of flexure of said springy portion. 24. The cantilever control system of claim 23, wherein: said cantilever control arm flexes between a neutral position, a first maximum flexed position on one side of said neutral position and a second maximum flexed position on the opposite side of said neutral position;said hysteresis control comprises a pair of leafs, each leaf disposed adjoining said cantilever control arm on an opposing side thereof, wherein a respective leaf fictionally slides against said cantilever control arm during flexing theretoward of said springy portion; andsaid stop control comprises a pair of stop abutments of said cantilever control arm with respect to the stationary structure when flexure is at the respective first and second maximum flexed positions with respect thereto.
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이 특허에 인용된 특허 (13)
Schuyler S. Shaw, Brake pedal emulator system and method.
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