STATE QUANTITY ESTIMATION DEVICE, CONTROL DEVICE, AND STATE QUANTITY ESTIMATION METHOD

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. The 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, 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 are used in the calculation for estimating the next state quantity. 实现一种能用于车重推定处理且能提高推定精度及推定速度的车辆状态量推定技术。状态量推定装置具备数据存储部(101)、预测量运算部(102)、获取部(107)、卡尔曼增益运算部(103)、进行推定状态量及推定协方差的计算的推定