Vibration damping device, method of controlling vibration damping device, method of correcting offset of vibration damping device, and leaf spring

Abstract

The invention provides a vibration damping device, a method of controlling the vibration damping device, a method of correcting offect of the vibration damping device and a leaf spring. The vibration damping device for an automobile, in which a power plant constructed from an engine and a transmission that are joined to each other is supported on a vehicle body through engine mounts in order to isolate vibration. The vibration damping device has vibration exciting means for generating vibration different from that of the engine, so that the amplitude of vibration of a seat etc. can be reduced by reaction force of the vibration exciting means. When the mode of vibration of the vehicle body is adjusted so as to have a node of the vibration near the seat, the amplitude of vibration of the vehicle body near the seat is reduced to improve ride comfort of the automobile.

Description

technical field [0001] The present invention relates to an automobile vibration damping device capable of reducing vibration amplitudes of a seat portion and a steering wheel portion in an engine-mounted vehicle such as an automobile to improve riding comfort. [0002] Furthermore, the present invention relates to a vibration damping device and a control method of the vibration damping device for suppressing vibration of a vibration damping target device such as an automobile. [0003] Furthermore, the present invention relates to an offset correction method of a vibration damping device. [0004] Furthermore, the invention relates to a leaf spring provided on a linear actuator. [0005] This application is based on Japanese Patent Application No. 2006-329495 filed in Japan on December 6, 2006, Japanese Patent Application No. 2006-329497 filed in Japan on December 6, 2006, and Japanese Patent Application No. 2007 filed in Japan on April 5, 2007. -99468, Japanese Patent Appli...

AI Technical Summary

Problems solved by technology

[0022] (1) It is difficult to effectively isolate the low-frequency vibration during idling and the high-frequency vibration during high-speed driving in the devices with improved spring characteristics of the engine mount as shown in Patent Documents 1 and 2

[0023] (2) Moreover, in the device shown in Patent Document 3, which can selectively switch two spring constants by a switch to perform vibration damping, since the rotational speed of the engine is continuously changed from a low speed to a high speed, there is a possibility that the vibration cannot be isolated. In the area, body vibration is generated and transmitted to passengers through the floor, which hinders ride comfort

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