Abstract:
PROBLEM TO BE SOLVED: To provide a setting method for control data which enables the attainment of active vibration-resistant control in which a rider does not feel uncomfortable feeling at the time of normal travelling started from the time of idling. SOLUTION: In an active vibration-resistant control system, when control data for an actuator is set up, the control data is set up with an adaptive control method if a pulse signal to be actually measured regarding revolution of an engine is higher than a preset frequency. If the pulse signal is below the present frequency, adaptive control data adaptable to operating conditions is selected from a predetermined data map, and this adaptive control data and the control data based on the actually measured data are set up. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a vacuum pump provided with a mechanical vibration damper having enhanced characteristic. SOLUTION: The vacuum pump and an external unit connected by the vibration damper are provided on a vacuum pump assembly. The vibration damper is provided with a plurality of piezo-electric actuators and a plurality of sensors. The actuator attenuates the vibration transmitted from the pump to the external unit connected to the pump and/or the vibration transmitted to a reverse direction. The sensor can impart a vibration measurement value for controlling the actuator. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a nondirectional vibration isolating system for effectively reducing the transmission of vibration between an object and a supporting foundation. SOLUTION: The system comprises an elastic structure connected between the object and the foundation and a means for applying a load to at least part of the elastic structure to be moved closer to an elastically unstable point. The object showing low rigidity of zero or nearly zero in the vertical or horizontal direction and having a mass in an acceleration field is supported and held in the condition of being balanced with the foundation. COPYRIGHT: (C)2005,JPO&NCIPI