US 2009/0037075 A1 · Control system for plant

Abstract

A control system for a plant, including a sliding mode controller and a transfer characteristic adjusting module. The sliding mode controller calculates a feedback control input with a sliding mode control so that an controlled output of the plant coincides with a target value. The transfer characteristic adjusting module is connected to an output of the sliding mode controller, and has a transfer characteristic set according to a transfer function of a controlled object model which is obtained by modeling the plant. A control input to the plant is set to an output of the transfer characteristic adjusting module. The transfer characteristic of the transfer characteristic adjusting module is set so that a composite transfer function indicative of a transfer characteristic which is obtained by combining the transfer characteristic of the transfer characteristic adjusting module and a transfer characteristic of the controlled object model, coincides with a desired target transfer function.

Claims20

Dependent claims

A control system for a plant, comprising:

sliding mode control means for calculating a feedback control input with a sliding mode control so that a controlled output of said plant coincides with a target value;
and
transfer characteristic adjusting means which is connected to an output of said sliding mode control means, and has a transfer characteristic set according to a transfer function of a controlled object model which is obtained by modeling said plant,
wherein a control input to said plant is set to an output of said transfer characteristic adjusting means, and
the transfer characteristic of said transfer characteristic adjusting means is set so that a composite transfer function indicative of a transfer characteristic which is obtained by combining the transfer characteristic of said transfer characteristic adjusting means and a transfer characteristic of said controlled object model, coincides with a desired target transfer function.

2 more elements

A control method for a plant, comprising:

a) calculating a feedback control input with a sliding mode control so that a controlled output of a plant coincides with a target value;
b) inputting the calculated feedback control input to a transfer characteristic adjusting module which has a transfer characteristic set according to a transfer function of a controlled object model which is obtained by modeling said plant;
and
c) inputting the output of said transfer characteristic adjusting module as a control input to said plant,
wherein the transfer characteristic of said transfer characteristic adjusting module is set so that a composite transfer function indicative of a transfer characteristic which is obtained by combining the transfer characteristic of said transfer characteristic adjusting module and a transfer characteristic of said controlled object model, coincides with a desired target transfer function.

2 more elements

A computer program embodied on a computer-readable medium for causing a computer to implement a control method for a plant, said control method comprising the steps of:

a) calculating a feedback control input with a sliding mode control so that an controlled output of said plant coincides with a target value;
b) inputting the calculated feedback control input to a transfer characteristic adjusting module which has a transfer characteristic set according to a transfer function of a controlled object model which is obtained by modeling said plant;
and
c) inputting the output of said transfer characteristic adjusting module as a control input to said plant,
wherein the transfer characteristic of said transfer characteristic adjusting module is set so that a composite transfer function indicative of a transfer characteristic which is obtained by combining the transfer characteristic of said transfer characteristic adjusting module and a transfer characteristic of said controlled object model, coincides with a desired target transfer function.

2 more elements

An apparatus, comprising:

a sliding mode controller configured to calculate a feedback control input with a sliding mode control, wherein a controlled output of a plant coincides with a target value;
a transfer characteristic controller connected to an output of the sliding mode controller, wherein a transfer characteristic is set according to a transfer function of a controlled object model which is obtained by modeling the plant,
wherein a control input to the plant is configured to be set to an output of the transfer characteristic adjuster, and wherein the transfer characteristic of the transfer characteristic adjuster is set so that a composite transfer function indicative of a transfer characteristic which is obtained by combining the transfer characteristic of the transfer characteristic adjuster and a transfer characteristic of the controlled object model, coincides with a desired transfer function.

Dependencies are inferred from the claim text.

Control system for plant

Life of this patent

Control system for plant

Life of this patent

Abstract

Claims20