Title:
STATE QUANTITY ESTIMATION DEVICE, CONTROL DEVICE, AND STATE QUANTITY ESTIMATION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/079876
Kind Code:
A1
Abstract:
The objective of the present invention is to implement a technology that is for estimating a vehicle state quantity, can be used to estimate a vehicle weight, and makes it possible to enhance estimation accuracy and speed. This state quantity estimation device comprises a data storage unit (101), a predicted quantity calculation unit (102), an acquisition unit (107), a Kalman gain calculation unit (103), an estimated quantity calculation unit (104) for calculating an estimated state quantity and an estimated covariance, and a process noise covariance correction unit (106) for correcting process noise covariance. The calculated estimated state quantity or a corrected estimated state quantity, the estimated covariance, and the process noise covariance are respectively written to a data storage unit (101) as a state quantity, state covariance, and process noise covariance and used in the calculation for estimating the next state quantity.
Inventors:
IZAWA MASAKI
GUPTA SHUBHAM
GUPTA SHUBHAM
Application Number:
PCT/JP2019/020084
Publication Date:
April 23, 2020
Filing Date:
May 21, 2019
Export Citation:
Assignee:
SHOWA CORP (JP)
International Classes:
G01G19/03; B60G17/0165; B60G17/018; B60G17/019; G01D3/032
Foreign References:
| JPS4926258B1 | 1974-07-08 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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