초록 ▼

A method for optimizing overall characteristics optimizes control parameters in at least one control module required for controlling a device, using an optimization method such as a heuristic method. The method includes the steps of: (a) preselecting values of the control parameters and activating t

A method for optimizing overall characteristics optimizes control parameters in at least one control module required for controlling a device, using an optimization method such as a heuristic method. The method includes the steps of: (a) preselecting values of the control parameters and activating the device; (b) on-line changing values of the control parameters within predetermined ranges under predetermined coding rules; (c) on-line evaluating the performance of the device based on signals indicative of the performance; (d) on-line selecting values of the control parameters based on the evaluation outcome; and (e) repeating steps (b) through (d) while operating the device until desired performance of the device is demonstrated, wherein the at least one control module is optimized. In the method, when two or more control modules control performance of the device, optimization by steps (a) through (d) may be conducted on each control module in repetitive sequence.

대표청구항 ▼

1. A method for controlling performance of a device operated by a user, which performance is controlled essentially by at least two control modules each having an input-output relationship regulated by control parameters, optimization of one module affecting optimization of the other, said method co

1. A method for controlling performance of a device operated by a user, which performance is controlled essentially by at least two control modules each having an input-output relationship regulated by control parameters, optimization of one module affecting optimization of the other, said method comprising the steps of: (a) preselecting values of the control parameters for each module and activating the device; (b) on-line changing values of the control parameters within predetermined ranges under predetermined coding rules; (c) on-line evaluating the performance of the device based on signals indicative of the performance with respect to one module and by the user with respect to the other; (d) on-line selecting values of the control parameters based on the evaluation outcome; and (e) repeating steps (b) through (d) while operating the device until desired performance of the device is demonstrated, wherein the at least two control modules are optimized. 2. The method according to claim 1, wherein optimization by steps (a) through (d) is conducted on each control module in repetitive sequence. 3. The method according to claim 1, wherein the device is a control module for controlling another device. 4. An apparatus for optimizing an overall characteristic comprising: a regular control unit including at least two regular control modules which determine an output associated with a manipulated variable of a controlled system based on predetermined input information; and an optimal process unit for directly optimizing control parameters of said regular control modules configured to perform the optimization method of claim 1. 5. The method according to claim 1, wherein after optimizing one control module, the other control module is optimized so that an obtained characteristic can be improved or maintained. 6. The method according to claim 1, wherein the control modules are optimized at a interval so that obtained characteristics can be improved or maintained. 7. The method according to claim 1, wherein during optimizing one control module, the other control module is optimized in parallel so that obtained characteristics can be improved or maintained. 8. The method according to claim 1 wherein the control modules are optimized in parallel so that obtained characteristics can be improved or maintained. 9. A method for controlling performance of a device, which performance is controlled essentially by at least two control modules each having an input-output relationship regulated by control parameters, optimization of one module affecting optimization of the other, said method comprising the steps of: (a) preselecting multiple candidates of values of the control parameters for each module; (b) activating the device using each candidate in sequence, wherein all of the candidates are used in one cycle; (c) on-line repeating the cycle multiple times; (d) on-line evaluating the performance of the device based on signals indicative of the performance; (e) on-line selecting desirable candidates of the control parameters based on the evaluation outcome; (f) on-line formulating new candidates from the selected candidates; (g) repeating steps (b) through (f) while operating the device until desired performance of the device is demonstrated, wherein the at least two control modules are optimized. 10. The method according to claim 9, wherein the device is an engine for a vehicle. 11. The method according to claim 10, wherein the module which is subjected to the method controls a fuel efficiency, and the other module controls acceleration characteristics.