Device for detecting the attitude of motor vehicles
First Claim
1. A device for detecting the attitude of motor vehicles that comprises:
- using at least one filter of a complementary type for computing an estimate ({circumflex over (x)}i) of angles of attitude (θ
, φ
, ψ
) of the motor vehicle as a function of input signals including an acceleration signal (A) and an angular-velocity signal (ω
);
said device including a plurality of complementary filters, each tuned for operating in a specific dynamic range; and
a supervisor module, adapted to recognise the dynamic range of the input signals (A, ω
) and select a corresponding filter in said plurality of complementary filters, receiving the acceleration signal (A) and the angular-velocity signal (ω
) measured by respective sensors and, on the basis of the values of said input signals (A, ω
), controls a selector so that it selects one of the estimates ({circumflex over (x)}i) available at the outputs of said plurality of complementary filters as output (U) of the attitude-detection device;
said supervisor module including a plurality of models of the vehicle defined as a function of dynamic quantities of the vehicle that affect the value of the attitude, each of said models generating an estimate of the dynamic quantities (Â
x, Â
y, Â
z) comprising one or more of the acceleration values (Ax, Ay, Az) and/or of the gyroscope signals (p, q, r), said supervisor module further including a module for evaluating the model in said plurality of models that best estimates the current condition (DRi) of the vehicle, and selecting a corresponding filter from said plurality of complementary filters on the basis of said evaluation.
1 Assignment
0 Petitions
Accused Products
Abstract
Described herein is a device for detecting the attitude of motor vehicles, which comprises using at least one filter of a complementary type for computing an estimate ({circumflex over (x)}i) of angles of attitude (θ, φ, ψ) of the motor vehicle as a function of input signals comprising an acceleration signal (A) and an angular-velocity signal (ω). According to the invention, the device (10) comprises a plurality of complementary filters (121, . . . , 12n) each tuned for operating in a specific dynamic range, and a supervisor unit (11), that acts to recognize the dynamic range of the input signals (A, ω) and select a corresponding filter (12i) from said plurality of complementary filters (121, . . . , 12n).
1 Citation
9 Claims
-
1. A device for detecting the attitude of motor vehicles that comprises:
-
using at least one filter of a complementary type for computing an estimate ({circumflex over (x)}i) of angles of attitude (θ
, φ
, ψ
) of the motor vehicle as a function of input signals including an acceleration signal (A) and an angular-velocity signal (ω
);said device including a plurality of complementary filters, each tuned for operating in a specific dynamic range; and a supervisor module, adapted to recognise the dynamic range of the input signals (A, ω
) and select a corresponding filter in said plurality of complementary filters, receiving the acceleration signal (A) and the angular-velocity signal (ω
) measured by respective sensors and, on the basis of the values of said input signals (A, ω
), controls a selector so that it selects one of the estimates ({circumflex over (x)}i) available at the outputs of said plurality of complementary filters as output (U) of the attitude-detection device;said supervisor module including a plurality of models of the vehicle defined as a function of dynamic quantities of the vehicle that affect the value of the attitude, each of said models generating an estimate of the dynamic quantities (Â
x, Â
y, Â
z) comprising one or more of the acceleration values (Ax, Ay, Az) and/or of the gyroscope signals (p, q, r), said supervisor module further including a module for evaluating the model in said plurality of models that best estimates the current condition (DRi) of the vehicle, and selecting a corresponding filter from said plurality of complementary filters on the basis of said evaluation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification