PID CONTROL REGULATOR WITH CONSTRAINED OUTPUT SIGNALS Russian patent published in 1998 - IPC

FIELD: automatic control of manufacturing processes. SUBSTANCE: device has parallel circuit of integrator and differentiator, as well as amplifier, which outputs are connected to inputs of adder which output is connected to non-linear clipper and input of first element relay. In addition device has parameter switch, three OR gates and second element relay, which input is connected to output of integrator, which first and second control inputs are connected to outputs of respectively first and second OR gates. Inputs of first OR gate are connected to first outputs of first and second element relays. Inputs of second OR gate are connected to second outputs of first and second element relays. Inputs of third OR gate are connected to first and second outputs of first element relay. Output of third OR gate is connected through parameter switch to input for alternation of parameters of differentiator. EFFECT: increased precision of regulation. 2 dwg