초록 ▼

An active suspension system for use with a mass suspended relative to a movable structure and subject to external forces such as the chassis of off-road vehicles, and in particular the hull of heavy combat vehicles, has a passive hydropneumatic suspension system (PHSS) connected to a servopump and a

An active suspension system for use with a mass suspended relative to a movable structure and subject to external forces such as the chassis of off-road vehicles, and in particular the hull of heavy combat vehicles, has a passive hydropneumatic suspension system (PHSS) connected to a servopump and an accumulator, and wherein the servopump transfers fluid energy between the accumulator and the suspension system, in accordance with sensed operating conditions which are inputted to a processor whose output commands the velocity of the servopump to control the pressure and volume relationships of the PHSS and accumulator to improve the ride of said vehicle and to substantially reduce energy requirements when operating off-road.

대표청구항 ▼

An active hydropneumatic suspension system for controlling the position of a mass having a first motion and supported relative to a movable reference having a second motion independent of the first motion and the mass being isolatable from the movable reference and subject to external force comprisi

An active hydropneumatic suspension system for controlling the position of a mass having a first motion and supported relative to a movable reference having a second motion independent of the first motion and the mass being isolatable from the movable reference and subject to external force comprising: support means including a series arranged hydropneumatic spring for producing a predetermined force to support the mass, servopump and hydropneumatic accumulator for receiving fluid from said hydropneumatic spring to isolate the mass from the movable reference; said servopump having a fixed displacement and a variable velocity and the hydropneumatic accumulator varying in oil volume in accordance with the operation of said servopump for isolating and stabilizing the mass with respect to the movable reference; a control system including detectors for sensing the first motion of the mass and the second motion of the movable reference and operative to control the velocity of the servopump to transfer fluid energy between the hydropneumatic spring and the hydropneumatic accumulator by transferring equal and opposite flow of energy from said hydropneumatic spring to said hydropneumatic accumulator substantially equal to the flow of energy caused by motion of said movable reference to adjust the force supporting the mass so as to maintain the predetermined force of the hydropneumatic spring and to transmit substantially zero dynamic force to the mass by the second motion of the movable reference thereby to increase the isolation of the mass from the action of the movable reference and to increase the stabilization of the mass when subject to external force.