System and a method for controlling a servo-controlled motor-vehicle gearbox
AssigneeC.R.F. S.C.P.A.
InventorsRenato Gianoglio, Pandeli Borodani, Giovanni Ellena, Massimo Fossanetti, Massimo Lupo, Attilio Porta
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Abstract
A system for controlling a servo-controlled gearbox (C), configured so as to use gear-shifting strategies similar to those used by a human driver so as to improve the driving sensation experienced by the driver. The control system uses a plurality of sensors (SENS) disposed in the vehicle for detecting the various operative conditions and a system of rules (a rule-based system) for implementing the strategies provided for.
Claims13
A system for controlling a servo-controlled gearbox (C) fitted in a motor vehicle, comprising:
- processing means (ECU),
- sensor means (SENS) operatively connected to the processing means (ECU) for detecting a plurality of physical quantities relating to the operation of the vehicle, and
- actuator means (AT) operatively connected to the processing means (ECU) for controlling the operation of the servo-controlled gearbox (C);
- the system being configured so as to detect a plurality of operative conditions of use of the vehicle and to implement different strategies for the control of the servo-controlled gearbox (C) in dependence on the operative conditions of use detected;
- the processing means (ECU) including reference model means for determining open-loop command signals for said actuator means (AT) on the basis of a predetermined mathematical driving model which sets the behaviour of the vehicle in accordance with a designated profile of the longitudinal acceleration (Ax) of the vehicle, said processing means (ECU) being predisposed for adding to said open-loop command signals closed-loop contribution signals generated by a Linear-Quadratic-Gaussian controller.
A method of controlling a servo-controlled gearbox (C) fitted in a motor-vehicle, comprising the steps of:
- detecting a plurality of operative conditions of use of the vehicle,
- controlling the operation of the servo-controlled gearbox (C) through actuator means (AT) in dependence on the operative conditions of use detected, using a reference model for determining open-loop command signals for said actuator means (AT) on the basis of a predetermined mathematical driving model which sets the behaviour of the vehicle in accordance with a designated profile of the longitudinal acceleration (Ax) of the vehicle, closed-loop contribution signals generated by a Linear-Quadratic-Gaussian controller being added to said open-loop command signals.
Dependencies are inferred from the claim text.