Patents Assigned to ClearMotion, Inc.
  • Patent number: 11021033
    Abstract: A method of on-demand energy delivery to an active suspension system comprising an actuator body, hydraulic pump, electric motor, plurality of sensors, energy storage facility, and controller is provided. The method comprises disposing an active suspension system in a vehicle between a wheel mount and a vehicle body, detecting a wheel event requiring control of the active suspension; and sourcing energy from the energy storage facility and delivering it to the electric motor in response to the wheel event.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: June 1, 2021
    Assignee: ClearMotion, Inc.
    Inventors: Zackary Martin Anderson, Shakeel Avadhany, Matthew D. Cole, Robert Driscoll, John Giarratana, Marco Giovanardi, Vladimir Gorelik, Jonathan R. Leehey, William G. Near, Patrick W. Neil, Colin Patrick O'Shea, Tyson David Sawyer, Johannes Schneider, Clive Tucker, Ross J. Wendell, Richard Anthony Zuckerman
  • Patent number: 10954935
    Abstract: Presented herein are systems and methods for attenuating flow ripple generated by a hydraulic pump. In certain aspects, a method and system for operating a hydraulic positive displacement pump according to a stabilized command profile are disclosed, such that flow ripple generated by operation of the pump according to the stabilized command profile is attenuated as compared to operation of the pump according to a corresponding nominal command profile. In other aspects, a pressure-balanced active buffer is disclosed that allow for at least partially cancelling flow ripple in a hydraulic circuit comprising a pump. In another aspect, a method for generating ripple maps for a pump is disclosed. Such ripple maps may be used, for example, to determine the stabilized command profile used to operate the pump, or may be used by the pressure-balanced active buffer to counteract ripple in the hydraulic circuit.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: March 23, 2021
    Assignee: ClearMotion, Inc.
    Inventors: Colin Patrick O'Shea, Clive Tucker, Brian Alexander Selden
  • Publication number: 20210055740
    Abstract: Systems and methods for determining the location of a vehicle are disclosed. In one embodiment, a method for localizing a vehicle includes driving over a first road segment, identifying by a first localization system a set of candidate road segments, obtaining vertical motion data while driving over the first road segment, comparing the obtained vertical motion data to reference vertical motion data associated with at least one candidate road segment, and identifying, based on the comparison, a location of the vehicle. The use of such localization methods and systems in coordination with various advanced vehicle systems such as, for example, active suspension systems or autonomous driving features, is contemplated.
    Type: Application
    Filed: September 1, 2020
    Publication date: February 25, 2021
    Applicant: ClearMotion, Inc.
    Inventors: Vijayaraghavan Sridhar, John Parker Eisenmann, Yu Jiang, David Francis Weatherwax
  • Patent number: 10906371
    Abstract: Integrated multiple actuator electro-hydraulic systems as well as their methods of use are described. Depending on the particular application, the integrated electro-hydraulic systems may exhibit different frequency responses and/or may be integrated into a single combined unit.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: February 2, 2021
    Assignee: ClearMotion, Inc.
    Inventors: Joseph Thomas Belter, Clive Tucker, Marco Giovanardi, Jack A. Ekchian, Zackary Martin Anderson, John A. Laplante
  • Patent number: 10901432
    Abstract: Systems and methods for determining the location of a vehicle are disclosed. In one embodiment, a method for localizing a vehicle includes driving over a first road segment, identifying by a first localization system a set of candidate road segments, obtaining vertical motion data while driving over the first road segment, comparing the obtained vertical motion data to reference vertical motion data associated with at least one candidate road segment, and identifying, based on the comparison, a location of the vehicle. The use of such localization methods and systems in coordination with various advanced vehicle systems such as, for example, active suspension systems or autonomous driving features, is contemplated.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: January 26, 2021
    Assignee: ClearMotion, Inc.
    Inventors: Vijayaraghavan Sridhar, John Parker Eisenmann, Yu Jiang, David Francis Weatherwax
  • Publication number: 20210018057
    Abstract: Disclosed herein are active hydraulic cylinders for use in active vehicle suspension systems, and methods for assembling active hydraulic cylinders for use in an active vehicle suspension system. In particular, in certain embodiments a manifold may encircle a portion of an outer tube of a twin tube assembly. The manifold may mechanically and fluidly couple a pump assembly to the twin tube assembly. In certain embodiments, the manifold may be welded onto the outer tube.
    Type: Application
    Filed: February 26, 2019
    Publication date: January 21, 2021
    Applicant: ClearMotion, Inc.
    Inventors: Clive TUCKER, Kevin Ryan McGUINNESS, Zhenrong WANG, Andrew Martin WIZOREK
  • Patent number: 10890197
    Abstract: Disclosed herein are hydraulic actuators and methods for the operation of actuators having variable relative pressure ratios. Further disclosed are methods for designing and/or operating a hydraulic actuator such that the actuator exhibits a variable relative pressure ratio. In certain embodiments, the relative pressure ratio of the hydraulic actuator may be dependent on one or more characteristics (such as, for example, frequency or rate of change) of an oscillating input to the hydraulic actuator.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: January 12, 2021
    Assignee: ClearMotion, Inc.
    Inventors: Joseph Thomas Belter, Graham A. Dowie, Marco Giovanardi, Brian Alexander Selden
  • Publication number: 20200408199
    Abstract: A linear energy harvesting device that includes a housing and a piston that moves at least partially through the housing when it is compressed or extended from a rest position. When the piston moves, hydraulic fluid is pressurized and drives a hydraulic motor. The hydraulic motor drives an electric generator that produces electricity. Both the motor and generator are central to the device housing. Exemplary configurations are disclosed such as monotube, twin-tube, tri-tube and rotary based designs that each incorporates an integrated energy harvesting apparatus. By varying the electrical characteristics on an internal generator, the kinematic characteristics of the energy harvesting apparatus can be dynamically altered. In another mode, the apparatus can be used as an actuator to create linear movement.
    Type: Application
    Filed: April 16, 2020
    Publication date: December 31, 2020
    Applicant: ClearMotion, Inc.
    Inventors: Clive Tucker, Ross J. Wendell, Zackary Martin Anderson, Evan Moen, Johannes Schneider, Zachary J. Jackowski, Sean C. Morton
  • Patent number: 10875375
    Abstract: At least one controller configured to control an actuator of an active suspension system. The at least one controller includes circuitry configured to determine an actuator state, and apply the actuator state and a commanded state to an inverse model of the actuator to produce an actuator command. The circuitry is configured to produce the actuator command by a process that includes performing low pass filtering and phase compensation to correct a phase introduced by the low pass filtering.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: December 29, 2020
    Assignee: ClearMotion, Inc.
    Inventors: Marco Giovanardi, Brian Alexander Selden, Jaganath Chandrasekar
  • Patent number: 10851816
    Abstract: Method and apparatus for improving the performance, response, and durability of an electro-hydraulic active suspension system. The noise caused by hydraulic flow ripple is reduced and system response is improved.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: December 1, 2020
    Assignee: ClearMotion, Inc.
    Inventors: Clive Tucker, Johannes Schneider, John Giarratana, William G. Near, Colin Patrick O'Shea, Tyson David Sawyer, Richard Anthony Zuckerman, Zackary Martin Anderson, Marco Giovanardi, Jack A. Ekchian
  • Patent number: 10843521
    Abstract: An apparatus and method are described where one or more pre-stressed spring elements are disposed between two structures to mitigate or cancel the effect of static loads applied to a component connecting the structures. The apparatus and methods may be used, for example, to reduce the adverse impact of static loads on the performance of top-mounts in a suspension system of a vehicle.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: November 24, 2020
    Assignee: ClearMotion, Inc.
    Inventors: Ramkumar Krishnan, Marco Giovanardi
  • Patent number: 10828953
    Abstract: A self-driving vehicle with an integrated fully-active suspension system. The fully-active suspension utilizes data from one or more sensors used for autonomous driving (e.g. vision, LIDAR, GPS) in order to anticipate road conditions in advance. The system builds a topographical map of the road surface. Suspension and road data is delivered back to the vehicle in order to change autonomous driving behavior including route planning. Energy storage is regulated based on a planned route. Forward and lateral acceleration feel is mitigated through active pitch and tilt compensation. The fully-active suspension pushes and pulls the suspension in three or more operational quadrants in order to deliver superior ride comfort, handling, and/safety of the vehicle.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: November 10, 2020
    Assignee: ClearMotion, Inc.
    Inventors: Zackary Martin Anderson, Marco Giovanardi
  • Patent number: 10814688
    Abstract: Various embodiments related to hydraulic actuators and active suspension systems as well as their methods of use are described.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: October 27, 2020
    Assignee: ClearMotion, Inc.
    Inventors: Marco Giovanardi, Clive Tucker, Ross J. Wendell, Zackary Martin Anderson, Colin Patrick O'Shea, Vladimir Gorelik, Tyson David Sawyer, Jonathan R. Leehey, Johannes Schneider, Robert Driscoll, Patrick W. Neil, Shakeel Avadhany
  • Publication number: 20200231016
    Abstract: Disclosed herein are methods and systems for modifying the posture of a vehicle, while traversing obstacles and/or steep slope transitions of a driving surface by, for example, adjusting approach, departure, and/or breakover angles by using one or more active suspension components.
    Type: Application
    Filed: January 22, 2020
    Publication date: July 23, 2020
    Applicant: ClearMotion, Inc.
    Inventor: Gert-Jan Alexander Vente
  • Publication number: 20200223274
    Abstract: Apparatus and methods are described where multiple linear and/or rotary actuators operate cooperatively in, for example, cross-linked arrangements to control the motion of sprung and unsprung masses in a vehicle. The actuators may include linear primary suspension actuators, spring perch actuators and/or rotary roll-bar actuators that, in some operating modes, are driven directly or indirectly by one or more hydraulic machines.
    Type: Application
    Filed: May 31, 2018
    Publication date: July 16, 2020
    Applicant: ClearMotion, Inc.
    Inventors: Clive Tucker, Marco Giovanardi, Jack A. Ekchian
  • Publication number: 20200198433
    Abstract: An active suspension system is configured in a strut arrangement. The active suspension system comprises a hydraulic actuator and a hydraulic pump/electric motor assembly, wherein the actuator movement is preferably in lockstep with the hydraulic motor-pump and electric motor-generator combination. Torque in the electric motor is instantaneously controlled by a controller to create an immediate force change on the hydraulic actuator. The hydraulic actuator is configured so that it can be used as a strut whereby the actuator has sufficient structural rigidity to carry the applied suspension loads while capable of supplying damper forces in at least three quadrants of the force velocity graph of the suspension actuator operation. Embodiments disclosed include low cost active suspension systems for a MacPherson strut application.
    Type: Application
    Filed: October 1, 2019
    Publication date: June 25, 2020
    Applicant: ClearMotion, Inc.
    Inventors: Clive Tucker, Zackary Martin Anderson, David Michael Lewis, Ross J, Wendell, Alexander Apostolos Alexandridis
  • Publication number: 20200182747
    Abstract: This disclosure describes a method for performing BSR testing on a vehicle with an active suspension system, the method including actuating at least one actuator of the active suspension system to induce vibration of a vehicle or at least one component of the vehicle at a first frequency, recording a first acoustic response generated by the vehicle or the at least one component in response to the induced vibration at the first frequency, and analyzing the first recorded acoustic response to identify a presence of one or more manufacturing defects associated with the vehicle or the at least one component. This disclosure also describes a method for characterizing resonance frequencies of a vehicle equipped with an active suspension system.
    Type: Application
    Filed: December 5, 2019
    Publication date: June 11, 2020
    Applicant: ClearMotion, Inc.
    Inventor: Michael W. Finnegan
  • Patent number: 10655612
    Abstract: A linear energy harvesting device that includes a housing and a piston that moves at least partially through the housing when it is compressed or extended from a rest position. When the piston moves, hydraulic fluid is pressurized and drives a hydraulic motor. The hydraulic motor drives an electric generator that produces electricity. Both the motor and generator are central to the device housing. Exemplary configurations are disclosed such as monotube, twin-tube, tri-tube and rotary based designs that each incorporates an integrated energy harvesting apparatus. By varying the electrical characteristics on an internal generator, the kinematic characteristics of the energy harvesting apparatus can be dynamically altered. In another mode, the apparatus can be used as an actuator to create linear movement.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: May 19, 2020
    Assignee: ClearMotion, Inc.
    Inventors: Clive Tucker, Ross J. Wendell, Zackary Martin Anderson, Evan Moen, Johannes Schneider, Zachary J. Jackowski, Sean C. Morton
  • Publication number: 20200139784
    Abstract: Systems and methods for determining the location of a vehicle are disclosed. In one embodiment, a method for localizing a vehicle includes driving over a first road segment, identifying by a first localization system a set of candidate road segments, obtaining vertical motion data while driving over the first road segment, comparing the obtained vertical motion data to reference vertical motion data associated with at least one candidate road segment, and identifying, based on the comparison, a location of the vehicle. The use of such localization methods and systems in coordination with various advanced vehicle systems such as, for example, active suspension systems or autonomous driving features, is contemplated.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 7, 2020
    Applicant: ClearMotion, Inc.
    Inventors: Vijayaraghavan Sridhar, John Parker Eisenmann, Yu Jiang, David Francis Weatherwax
  • Publication number: 20200088214
    Abstract: Presented herein are systems and methods for attenuating certain pulsations in a hydraulic system comprising a pump and a hydraulic actuator. In certain aspects, an accumulator comprising an internal volume that is divided into a working chamber and a contained chamber may be utilized to at least partially attenuate propagation of certain pulsations in the system. The working chamber may be fluidically coupled to the pump via a first flow path and fluidically coupled to a chamber of the actuator via a second flow path. The system may be designed such that a first inertance of the first flow path is greater than a second inertance of the second flow path. Additionally or alternatively, the system may be designed such that a resonance associated with the first inertance and a compliance of the accumulator may occur at a resonance frequency of less than 90 Hz.
    Type: Application
    Filed: June 1, 2017
    Publication date: March 19, 2020
    Applicant: ClearMotion, Inc.
    Inventors: Nathan Woodard, Colin Patrick O'Shea, Hector Arnaldo Inirio