RU2003107863A - METHOD FOR OPTIMAL AUTOMATIC ADJUSTMENT OF THE CONTROL SYSTEM - Google Patents

Claims (1)

The method of optimal automatic tuning of the control system, based on the translation of the closed-loop control system into open mode, applying a test signal to the input of the object, measuring the parameters of the transient process, determining from them the parameters K _o , n, T ₁ and T _{2 of the} adopted model of the control object

where W (p) is the transfer function of the object; To _about - the gain of the object; T ₁ , T ₂ - time constants; n is the order determining, according to the model parameters, the optimal controller settings and transferring the system with the optimal settings to the operating mode, characterized in that a step signal with adjustable amplitude and polarity d is used as a test signal, the characteristic points of the transition process are determined: the maximum value A of the derivative of the object output and T _max time to achieve it, at time T _beg derivative achieve a 5% level of the maximum value of the derivative, and the time Tend, wherein Output value of the derivative of the object is reduced to 70% level of the maximum value of the derivative, evaluation K $\genfrac{}{}{0ex}{}{\text{*}}{\text{about}}$ , n ^* , T $\genfrac{}{}{0ex}{}{\text{*}}{\text{1}}$ and T $\genfrac{}{}{0ex}{}{\text{*}}{\text{2}}$ the parameters K _o , n, T ₁ and T ₂ models are determined by the characteristic points of the transition process using auxiliary functions n ^* = F ₁ (T _beg / T _max -T _beg )), T $\genfrac{}{}{0ex}{}{\text{*}}{\text{1}}$ = F ₂ (T _beg , n ^* ), T $\genfrac{}{}{0ex}{}{\text{*}}{\text{2}}$ = F ₃ ((T _end -T _max ) / T $\genfrac{}{}{0ex}{}{\text{*}}{\text{1}}$ , n ^* ), K $\genfrac{}{}{0ex}{}{\text{*}}{\text{o}}$ = AT $\genfrac{}{}{0ex}{}{\text{*}}{\text{2}}$ F ₄ (T $\genfrac{}{}{0ex}{}{\text{*}}{\text{1}}$ , T $\genfrac{}{}{0ex}{}{\text{*}}{\text{2}}$ , n ^* ) / d,

controller settings are determined by the criterion of maximum degree of stability.