Title:
VEHICLE PITCH ANGLE ARITHMETIC UNIT
Document Type and Number:
Japanese Patent JP3931495
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a pitch angle arithmetic unit which can operate a pitch angle by detecting either one of front or rear vehicle height variation of a vehicle.
SOLUTION: This vehicle pitch angle arithmetic unit is equipped with a vehicle height sensor for detecting vehicle height variation in a rear wheel position and operates a pitch angle θ based on the formulae θ=tan-1[(α-hr)/w], hereupon hr<Ra and θ=tan-1[(-β-hr)/w], hereupon hr≥Ra where hr is the value of the vehicle height variation in the rear wheel position which is actually detected by the vehicle height sensor, α is a positive prescribed value of the virtual value of the vehicle height variation in a front wheel position when hr is below a prescribed value, -β is a negative prescribed value thereof when hr is at the prescribed value or more, and (w) is wheel base length. In which variation that the vehicle height is lowered from a reference position is identified as positive and variation that the vehicle height is heightened from the reference position is identified as negative.
Inventors:
Amano Nobuhiro
Toshiyuki Fujikura
Katsushi Awaji
Toshiyuki Fujikura
Katsushi Awaji
Application Number:
JP21844199A
Publication Date:
June 13, 2007
Filing Date:
August 02, 1999
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
B60G17/00; B60Q1/115; G01B21/22; (IPC1-7): B60Q1/115; //B60G17/00; G01B21/22
Domestic Patent References:
| JP9286274A | ||||
| JP2000142213A |
Attorney, Agent or Firm:
Shigeru Kobayashi
Yoshihiko Izumi
Yoshihiko Izumi