Various embodiments related to hydraulic actuators and active suspension systems as well as their methods of use are described.
대표청구항▼
1. A device comprising: a housing including a first port and a second port and a pressure sealed barrier located in the housing disposed between a first oil filled portion of the housing and a second portion of the housing;a hydraulic motor-pump disposed within the first portion of the housing, wher
1. A device comprising: a housing including a first port and a second port and a pressure sealed barrier located in the housing disposed between a first oil filled portion of the housing and a second portion of the housing;a hydraulic motor-pump disposed within the first portion of the housing, wherein the hydraulic motor-pump controls a flow of fluid between the first port and the second port;an electric motor disposed within the housing and operatively coupled to the hydraulic motor-pump; anda controller electrically coupled to the electric motor and disposed within the housing, wherein the controller controls a motor input of the electric motor. 2. The device of claim 1, wherein at least a portion of the pressure sealed barrier allows the transmission of a magnetic flux through the pressure sealed barrier. 3. The device of claim 2, further comprising a sensor, and wherein at least a portion of the magnetic flux transmitted through the at least a portion of the pressure sealed barrier is measured by the sensor. 4. The device of claim 1, wherein the electric motor is at least partially located in the first portion of the housing. 5. The device of claim 1, wherein the controller is located in the second portion of the housing. 6. The device of claim 1, wherein the hydraulic motor-pump and the electric motor are located in the first portion of the housing. 7. The device of claim 6, wherein the controller is located in the second portion of the housing. 8. The device of claim 7, wherein the pressure sealed barrier is a bulkhead that is exposed to pressure variations of the hydraulic fluid on one side and to a lower pressure on a second side. 9. The device of claim 7, further comprising a rotary position sensor located in the second portion of the housing, wherein the electric motor is a rotary electric motor that is coupled the hydraulic motor-pump by a shaft located in the first portion of the housing, wherein the rotational position of the shaft is detected by the rotary position sensor. 10. The device of claim 1, wherein the electric motor and hydraulic motor-pump have a combined reflected system inertia and a combined system compliance, and wherein a product of the system compliance times the reflected system inertia is less than or equal to 0.0063 s−2. 11. The device of claim 10, wherein a product of the system compliance times the reflected system inertia is greater than or equal to 2.5×10−6 s−2. 12. The device of claim 1, wherein a response time of the device is between or equal to 10 ms and 150 ms. 13. The device of claim 1, wherein a natural frequency of the device is between or equal to 2 Hz and 100 Hz. 14. The device of claim 1, wherein the housing is attached to and in hydraulic communication with a first hydraulic actuator. 15. The device of claim 14, wherein the first port and the second port are in fluid communication with an extension volume and a compression volume of the hydraulic actuator when the hydraulic actuator is attached to the housing. 16. The device of claim 14, wherein controlling the motor input of the electric motor directly controls actuation of the hydraulic actuator when the hydraulic actuator is attached to the housing. 17. The device of claim 14, further comprising one or more valves located between the hydraulic motor-pump and the hydraulic actuator when the housing is attached to the hydraulic actuator. 18. The device of claim 1, wherein the motor input is at least one of motor position, voltage, torque, impedance, frequency, and speed. 19. The device of claim 1, wherein the controller controls the motor input to the electric motor to control a hydraulic actuator in at least three of four quadrants of a force velocity domain of the hydraulic actuator. 20. The device of claim 19, wherein the hydraulic actuator is controlled to operate in all four quadrants of the force velocity domain of the hydraulic actuator. 21. The device of claim 1, wherein the controller receives inputs from at least one of an internal sensor integrated with the device and an external sensor remotely located relative to the device, and wherein the controller controls operation of a hydraulic actuator in response to the signals from the at least one of the internal sensor and the external sensor. 22. The device of claim 1, wherein the housing is connected to a sprung mass side of a suspension system. 23. The device of claim 1, wherein the housing is coaxially aligned with and connected to a hydraulic actuator. 24. The device of claim 1, wherein the controller is adapted to update the motor input at a frequency greater than or equal to 0.5 Hz. 25. The device of claim 24, wherein the controller is adapted to update the motor input at a frequency less than or equal to 1 kHz. 26. The device of claim 1, further comprising: at least one valve that partially controls a flow of hydraulic fluid between the first and second ports of the hydraulic-motor pump during at least one mode of operation. 27. The device of claim 26, wherein the at least one valve is a diverter valve that activates at a preset flow rate of hydraulic fluid leaving the damper. 28. The device of claim 26, wherein the hydraulic motor-pump and the electric motor have a combined reflected system inertia and a combined system compliance, and wherein a product of the system compliance times the reflected system inertia is less than or equal to 0.0063 s−2. 29. The device of claim 28, wherein the hydraulic motor-pump and the electric motor have a combined reflected system inertia and a combined system compliance, and wherein a product of the system compliance times the reflected system inertia is greater than or equal to 2.5×10−6 s−2. 30. The device of claim 26, wherein a response time of the active suspension actuator is between about 10 ms and 150 ms. 31. The device of claim 26, wherein a natural frequency of the active suspension actuator is between 2 Hz and 100 Hz. 32. The device of claim 26, wherein controlling the motor input of the electric motor directly controls actuation of the hydraulic actuator. 33. The device of claim 26, wherein the motor input is at least one of motor position, voltage, torque, impedance, frequency, and speed. 34. The device of claim 26, wherein the controller receives inputs from one or more sensors adapted to sense at least one of a wheel event and a body event, and wherein the controller controls the motor input in response to at least one of a sensed wheel event and a sensed body event. 35. The device of claim 26, wherein an update frequency of the motor input is greater than or equal to at least one of a wheel event and a body event frequency. 36. The device of claim 35, wherein the update frequency of the motor input is greater than about 0.5 Hz. 37. The device of claim 36, wherein the update frequency of the motor input is less than about 1 kHz. 38. The device of claim 36, wherein at least one of the wheel event and body event frequency is between about 0.5 Hz to 20 Hz. 39. The device of claim 26, wherein the at least one valve includes: a first valve that limits a flow of hydraulic fluid to the hydraulic-motor pump from the first volume during at least a first mode of operation; anda second valve that limits a flow of hydraulic fluid to the hydraulic-motor pump from the second volume during at least a second mode of operation.
Lu, Jianbo; Hrovat, Davor; Pilutti, Thomas E.; Engleman, Jerry H.; Tseng, Eric H.; Filev, Dimitar P., Adaptive crash height adjustment using active suspensions.
Koga Hisamitsu,JPX ; Kumagai Naotake,JPX ; Owada Tomiji,JPX ; Furukawa Nobuya,JPX ; Kato Masaaki,JPX ; Kawamura Nobuyuki,JPX, Braking control system for electric automobile.
Jinbo Yoshiji (Katsuta JPX) Kozu Eiji (Katsuta JPX) Narita Hiroshi (Mito JPX), Braking control system selectively operable in dynamic and regenerative braking operation for electric car.
Beno Joseph H. ; Weeks Damon A. ; Weldon William F. ; Bresie Don A. ; Guenin Andreas M., Constant force suspension, near constant force suspension, and associated control algorithms.
Inoue, Hirofumi; Yamaguchi, Takenari; Kondo, Takuhiro, Damping force generation system and vehicle suspension system constructed by including the same.
Collier-Hallman Steven James, Electro-hydraulic power steering control with fluid temperature and motor speed compensation of power steering load signal.
Ibaraki Ryuji,JPX ; Kubo Seitoku,JPX ; Taga Yutaka,JPX ; Hata Hiroshi,JPX ; Mikami Tsuyoshi,JPX ; Matsui Hideaki,JPX, Hybrid vehicle drive system having clutch between engine and synthesizing/distributing mechanism which is operatively co.
Merritt Thomas D. (9025 Hawthorne St. Surfside FL 33154) Pasichinskyj Mario J. (9025 Hawthorne St. Surfside FL 33154), Linear reciprocating electrical generator.
Taylor Douglas P. (Grand Island NY), Liquid spring, vehicle suspension system and method for producing a low variance in natural frequency over a predetermin.
Offerle, Timothy G.; Tseng, Hongtei E.; Rhode, Douglas S.; Brown, Gregory P., Method and apparatus for controlling brake-steer in an automotive vehicle in reverse.
Bachrach Benjamin I. (Dearborn MI) Goran Michael B. (Birmingham MI) Grenda James D. (Grosse Pointe MI) Levitt Joel A. (Ann Arbor MI) Nametz John E. (Ypsilanti MI), Power consumption limiting means for an active suspension system.
Levitt Joel A. (Ann Arbor MI) Bachrach Benjamin I. (Dearborn MI) Goran Michael B. (Bloomfield Hills MI) Grenda James D. (Grosse Pointe MI) Nametz John E. (Ypsilanti MI), Powered active suspension system responsive to anticipated power demand.
Margolis Donald L. (Elmacero CA) Jolly Mark R. (Holly Springs NC) Schroeder Warren R. (Davis CA) Heath Michael C. (Cary NC) Ivers Douglas E. (Cary NC), Regenerative system including an energy transformer which requires no external power source to drive same.
Abdelmalek Fawzy T. (12807 Willowyck Dr. St. Louis MO 63146), Shock absorber and a hermetically sealed scroll gas expander for a vehicular gas compression and expansion power system.
Miller Lane R. (Fuguay-Varina NC) Nobles Charles M. (Fuguay-Varina NC) Ivers Douglas E. (Cary NC) Jolly Mark R. (Davis NC), System for reducing suspension end-stop collisions.
Asada,Tadatoshi, Vehicle-mounted electric generator control system which selectively supplies regenerative field current to battery in accordance with currently available generating capacity.
Ivers Douglas E. (Cary NC) Miller Lane R. (Fuquay-Varina NC) Schroeder Warren R. (Cary NC), Vibration attenuating method utilizing continuously variable semiactive damper.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.