Helicopter vibration control system and circular force generation systems for canceling vibrations

A vehicle, said vehicle having a nonrotating vehicle body and a rotating machine member, said vehicle including a vehicle vibration control system, said 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 said relative rotation of said vehicle rotating machine member rotating relative to said nonrotating vehicle body into said vehicle vibration control system controller,
• at least a first nonrotating vehicle body vibration sensor, said at least first nonrotating vehicle body vibration sensor inputting at least first nonrotating vehicle body vibration sensor data correlating to vehicle vibrations into said vehicle vibration control system controller,
• at least a first nonrotating vehicle body circular force generator, said at least a first nonrotating vehicle body circular force generator fixedly coupled with said nonrotating vehicle body, said 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, said controllable rotating force magnitude controlled from a minimal force magnitude up to a maximum force magnitude, and with said controllable rotating force phase controlled in reference to said vehicle rotating machine member sensor data correlating to said relative rotation of said vehicle rotating machine member rotating relative to said nonrotating vehicle body wherein said vehicle vibration sensed by said at least first nonrotating vehicle body vibration sensor is reduced.