Patent ID: 6803736
Filing Date: 2004-10-12
Classification: G05B,Y10S

Abstract:
A control system for use in a motor vehicle, said motor vehicle including an actuator regulator and an electric servomotor, said control system comprising:a current regulator which determines a correct current parameter value on the basis of comparing a setpoint value which is determined from an operating state of the motor vehicle and which corresponds to a desired set position, and an instantaneous value which corresponds to an instantaneous set position of the actuator regulator; a model assisted monitor which generates an output evaluating parameter value for evaluating the suitability of correcting the actuator regulator as a function of servomotor setpoint parameters, a plurality of instantaneous parameters measured by a plurality of sensors, and the current operating state of the vehicle, said output evaluating parameter value is based on a model which simulates setpoint behavior of the action regulator, said model-assisted monitor having a load torque estimator which estimates a theoretical load torque as a function of at least one of said plurality of instantaneous parameters which comprise instantaneous position values and the operating state of the vehicle, said model-assisted monitor including a control section control model and a servomotor model, said model-assisted monitor calculates theoretical instantaneous values for the servomotor position, the actual applied servomotor torque, and the instantaneous servomotor current, as a function of the servomotor setpoint parameters and the estimated theoretical load torque, said model-assisted monitor generating a different signal from the calculated theoretical instantaneous values and corresponding actual instantaneous values, whereby suitability of correcting the actuator regulator can be evaluated.