Stmicroelectronics S.r.l.

Olga Diamante

Riccardo Caponetto

Gianguido Rizzotto

Domenico Massimo Porto

Luigi Fortuna

Salvatore Abbisso

Eusebio Di Cola

Giovanna Fargione

Domenico Tringali

Antonino Risitano

A method for controlling a vehicle semi-active suspension system comprising at least one suspension, providing for: detecting vehicle dynamic quantities during the vehicle ride; using the detected dynamic quantities, determining an index of ride comfort and an index of roadholding; applying a weight factor to the index of ride comfort and to the index of roadholding and, based on a Sky Hook control model, determining a target damping force characteristics for the at least one suspension of the suspension system; controlling the at least one suspension to put the respective damping force characteristics in accordance with the calculated target damping force characteristics. The weight factor is calculated dynamically during the vehicle ride, by means of a fuzzy calculation on the detected vehicle dynamic quantities.

Method and apparatus for controlling a vehicle suspension system based on sky hook approach

A circuit implementing a non-integer order dynamic system includes a neural network that receives at least one input signal and generates therefrom at least one output signal. The input and output signals are related to each by a non-integer order integro-differential relationship through the coefficients of the neural network. A plurality of such circuits, implementing respective non-integer order controllers can be interconnected in an arrangement wherein any of the integral or differential blocks included in one of these circuits generates a signal which is fed to any of the integral or differential blocks of another circuit in the system.

Non-integer order dynamic systems

A control device for a vehicle having at least one semiactive suspension arranged between a vehicle body and a wheel and having a damping coefficient that can be varied in a controlled way by an actuator governed by a control device, the control device including an accelerometric sensor generating a vehicle body acceleration signal; a potentiometer generating a suspension position signal; a signal conditioning unit for the calculation of the vehicle body speed and the damping speed; a fuzzy control unit that calculates the subsequent position of the actuator on the basis of the vehicle body speed and of the damping speed; and a driving unit which generates a control signal for the actuator.

Method and device for controlling semiactive suspensions of motor vehicles

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Siracusa, Italy

Olga Diamante