ADAPTIVE CONTROL METHOD AND SYSTEM FOR AN ELECTRICALLY OPERATED ACTUATOR

摘要

A method of controlling a system (1) which includes an electrically operated actuator (12) the operation of which is dependant upon the current applied, using a control apparatus (10) which includes a controller (C) which responds to a demand input Signal (D) which depends upon system demand by providing a demand signal (19) which indicates a desired current (Id) to be applied to the actuator (12), processing the demand signal (19) in a signal processor (21) to control the voltage of a supply (11) to produce a control signal (15) which is calculated to have the desired current(Id) to operate the actuator (12) to change a variable of the system (1) to match system demand, the method including providing the demand signal (19) simultaneously to a modelling device (30) which is programmed to model the actuator (12) and to produce a modelled control signal (35), comparing the currents of the actual control signal (Ic) and the modelled control signal (Im), and modifying the processing of the demand signal (19) to change the actual control signal current (Ic) to compensate for variations between the currents of the modelled control signal (Im) and the actual control signal (Ic).