| 摘要 |
A method and circuit for controlling a controlled variable by a closed-loop control circuit comprising at least two controllers and a control device with a reference stage and a controlled system generating the controlled variable. The reference stage is supplied with a reference variable, which determines the set point of the controlled variable, the maximum value of which is predefined as a function of the control limits of the control device formed as the sum of the control limits of the controllers of the control device. A first controller of the control device is provided with a control deviation, which is formed as the difference between the reference variable and the actual value of the controlled variable. The other controllers of the control device are provided with a control deviation, which is formed, respectively, as the difference between the control deviation of the respective preceding controller and the actual value of the controlled variable of the additional controller.
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