| 摘要 |
PROBLEM TO BE SOLVED: To provide the adaptive control system for an actuator system, in which a desirable transfer characteristic between a control input terminal and a transducer output terminal is produced. SOLUTION: A controller 15 is provided with a parameter vector input terminal 24, that is used to change a linear or nonlinear transfer characteristic of the controller 15 between a control input terminal 13 and a transducer output terminal 23. An error circuit 31 measures an electrical signal between the terminals of a transducer 19 to produce an error signal e(t) which denotes the difference between the measured electric signal and an output signal of the controller 15 or an estimated electrical signal derived from other state signal. An update circuit 33 minimizes the amplitude of the error signal so as to estimate a transducer parameter. The estimated parameter is fed to both the error circuit 31 and the controller 15 for matching the controller 15 with a specific transducer or to correct distortion in a mechanical or acoustic output signal. |
