Patent ID: 6466859
Filing Date: 2002-10-15
Classification: F02D,G05B

Abstract:
A method for controlling performance of a machine by a control system, which machine is operable by a causative signal, the performance of which machine is indicatable by an indicative signal, wherein the indicative signal outputted from said machine deviates from a pre-set target value of the indicative signal due to an internal change of said machine and from a pre-set target value of the indicative signal due to an external change of said machine while operating said machine, said control system comprising;(i) a control unit configured to output a causative signal when receiving pre-selected signals, wherein the input-output relationship of said control unit is regulated by control parameters; (ii) a parameter-outputting unit configured to output a control parameter to said control unit at a parameter-outputting unit connection when said parameter-outputting unit receives pre-selected signals; and (iii) a compensation-outputting unit configured to output a compensation signal to said control unit at a compensation-outputting unit downstream of said parameter-outputting unit connection when receiving pre-selected signals; said method comprising the steps of: (a) detecting a discrepancy between the indicative signal outputted from said machine and the pre-set target value of the indicative signal for an internal change; (b) detecting a discrepancy between the indicative signal outputted from said machine and the pre-set target value of the indicative signal for an external change; (c) modifying the control parameter to compensate for the discrepancy detected in step (a), whereby the internal change in said machine is compensated for; and (d) modifying the compensation signal to compensate for the discrepancy detected in step (b), whereby the external change of said machine is compensated for.