Abstract:
A vehicle (520) a nonrotating vehicle body (524), a rotating machine member (522), and including a vehicle vibration control system (409), the vehicle vibration control system including a controller (411), a vehicle rotating machine member sensor (552) for inputting vehicle rotating machine member data correlating to the relative rotation of the vehicle rotating machine member rotating relative to the nonrotating vehicle body into the vehicle vibration control system controller, at least a first nonrotating vehicle body vibration sensor (554), for inputting at least first nonrotating vehicle body vibration sensor data correlating to vehicle vibrations into the controller, at least a first nonrotating vehicle body circular force generator (530), fixedly coupled with the nonrotating vehicle body and controlled to produce a rotating force with a controllable rotating force magnitude and a controllable rotating force phase, wherein the vehicle vibration sensed by the at least first nonrotating vehicle body vibration sensor is reduced.
Abstract:
A vehicle a nonrotating vehicle body, a rotating machine member, and including a vehicle vibration control system, the vehicle vibration control system including a vehicle vibration control system controller, a vehicle rotating machine member sensor for inputting vehicle rotating machine member data correlating to the relative rotation of the vehicle rotating machine member rotating relative to the nonrotating vehicle body into the vehicle vibration control system controller, at least a first nonrotating vehicle body vibration sensor, the at least first nonrotating vehicle body vibration sensor inputting at least first nonrotating vehicle body vibration sensor data correlating to vehicle vibrations into the vehicle vibration control system controller, at least a first nonrotating vehicle body circular force generator, the at least a first nonrotating vehicle body circular force generator fixedly coupled with the nonrotating vehicle body, the at least first nonrotating vehicle body circular force generator controlled to produce a rotating force with a controllable rotating force magnitude and a controllable rotating force phase, the controllable rotating force magnitude controlled from a minimal force magnitude up to a maximum force magnitude, and with the controllable rotating force phase controlled in reference to the vehicle rotating machine member sensor data correlating to the relative rotation of the vehicle rotating machine member rotating relative to the nonrotating vehicle body wherein the vehicle vibration sensed by the at least first nonrotating vehicle body vibration sensor is reduced.
Abstract:
A rotary wing aircraft (520) including a vehicle vibration control system (409). The vehicle vibration control system includes a rotating hub mounted vibration control system (HMVS) (20) rotating with the rotating rotary wing hub (522). The vehicle vibration control system includes a rotary wing aircraft member sensor (552) for outputting rotary wing aircraft member data correlating to the relative rotation of the rotating rotary wing hub member rotating relative to the nonrotating body, at least a first nonrotating body vibration sensor (554), outputting at least first nonrotating body vibration sensor data correlating to vibrations, at least a first nonrotating body circular force generator (CFG) (530), fixedly coupled with the nonrotating body (524), a distributed force generation data communications network link (150), linking together at least the first CFG and the HMVS wherein HMVS and the CFG communicate force generation vibration control data through said link (150), the at least first CFG controlled to produce a rotating force with a controllable rotating force magnitude and a controllable rotating force phase, wherein the vibration sensed by the at least first nonrotating body vibration sensor is reduced.
Abstract:
A rotary wing aircraft including a vehicle vibration control system. The vehicle vibration control system includes a rotating hub mounted vibration control system, the rotating hub mounted vibration control system mounted to the rotating rotary wing hub with the rotating hub mounted vibration control system rotating with the rotating rotary wing hub. The vehicle vibration control system includes a rotary wing aircraft member sensor for outputting rotary wing aircraft member data correlating to the relative rotation of the rotating rotary wing hub member rotating relative to the nonrotating body, at least a first nonrotating body vibration sensor, the at least first nonrotating body vibration sensor outputting at least first nonrotating body vibration sensor data correlating to vibrations, at least a first nonrotating body circular force generator, the at least a first nonrotating body circular force generator fixedly coupled with the nonrotating body, a distributed force generation data communications network link, the distributed force generation data communications system network link linking together at least the first nonrotating body circular force generator and the rotating hub mounted vibration control system wherein the rotating hub mounted vibration control system and the first nonrotating body circular force generator communicate force generation vibration control data through the distributed force generation data communications network, the at least first nonrotating body circular force generator controlled to produce a rotating force with a controllable rotating force magnitude and a controllable rotating force phase, the controllable rotating force magnitude controlled from a minimal force magnitude up to a maximum force magnitude, and with the controllable rotating force phase controlled in reference to the rotary wing aircraft member sensor data correlating to the relative rotation of the rotating rotary wing hubrotating relative to the nonrotating body wherein the vibration sensed by the at least first nonrotating body vibration sensor is reduced.