ENERGY-SAVING AUTOMATIC CONTROL SYSTEM Russian patent published in 2013 - IPC G05B13/00 

FIELD: power industry.

SUBSTANCE: structure of multi-circuit ACS with frequency separation of control channels includes an input channel of a demand, algebraic adders, on which comparison of a demand signal is made to a feedback signal, and a block of controls with the corresponding control channels. The specific feature of the proposed structure is determined by available band-pass filters in each of the control channels. In the proposed structure for separation of frequencies in control channels there used are ideal band-pass filters that do not add any additional delay to the system and contribute to the fact that the closed system remains stable under condition that individual control circuits are initially stable. Therefore, according to the proposed structure of multi-circuit ACS with frequency separation of control channels due to use of ideal band-pass filters the alternating operation of each of the control circuits takes place, thus allowing to achieve the required dynamic and energy efficiency of the energy-saving ACS as a whole.

EFFECT: improvement of control quality and energy efficiency of control of a process object due to choosing a dynamically effective and energy efficient control channels and their actuation depending on frequency characteristics of disturbing actions and response to them of individual control circuits; simpler calculation of settings of the corresponding controls.

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