| 摘要 |
PURPOSE:To shorten the period of identification and to identify system parameter at high accuracy by excluding identification arithmetic values of inferior identification accuracy by an selective arithmetic means. CONSTITUTION:Input values U(k)-U(k-n+1) of n steps of a controlling system 1 and output values Y(k)-Y(k-n+1) of n steps of the controlling system 1 are inputted to an identifying device 6. The device 6 inputs input values and output values to an observation data section 31 and prepares n sets of observation data on the input-output values. Further, an identification arithmetic section 32 makes identification operation of n sets of observation data obtained by the data section 31 and obtains coefficients of n sets of model expressions and supplies to a selective arithmetic unit 4. The arithmetic unit 4 selects an intermediate value from input identification values. When an approximate value is known from transcendental information, the device selects an identification value nearest to the approximate value, or excludes identification value data that differ largely from the approximate value, and outputs the selected identification value as operational output. |
