ACTIVE VEHICLE SUSPENSION SYSTEM
7 Assignments
0 Petitions
Accused Products
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.
404 Citations
427 Claims
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1-400. -400. (canceled)
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401. A method of energy neutral active suspension, comprising:
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harvesting energy from suspension actuator movement; delivering the harvested energy to an energy source from which the suspension actuator conditionally draws energy to create a force; and consuming energy from the energy source to control movement of the suspension actuator for wheel events that result in actuator movement, wherein energy consumption is regulated and limited so that harvested energy substantially equals consumed energy over a time period that is substantially longer than an average wheel event duration. - View Dependent Claims (402, 403, 404, 405, 406, 407, 408, 409, 410)
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411-415. -415. (canceled)
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416. An electronic suspension system, comprising:
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a piston disposed in a hydraulic housing; an energy recovery mechanism such that movement of the piston results in energy generation; an energy storage facility to which harvested energy from the energy recovery mechanism is stored; and a control system that regulates force on the piston by varying an electrical characteristic of the energy recovery mechanism and that operates from energy stored in the energy storage facility, wherein the control system determines an average net energy exchange over a time period that is substantially longer than an average wheel event duration. - View Dependent Claims (417, 418, 419, 420, 421)
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422. (canceled)
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423. A method, comprising:
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measuring energy consumption by an active vehicle suspension system that is capable of operating in at least a passive rebound suspension quadrant, a passive compression suspension quadrant and at least one of a push rebound suspension quadrant and a pull compression suspension quadrant over a period of time; consuming energy with the active vehicle suspension system during operation in the at least one of a push rebound suspension quadrant and a pull compression suspension quadrant; calculating an average of the measured energy consumption; comparing the calculated average of the measured energy consumption to an energy neutrality target threshold value; and based on the comparison, biasing a control of the active vehicle suspension system to respond to wheel events by operation in the passive rebound and passive compression quadrants until a running average of energy consumed by the active vehicle suspension is lower than the energy neutrality target threshold. - View Dependent Claims (424, 425, 426)
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427-1619. -1619. (canceled)
Specification