Dynamic error compensating process controller
First Claim
1. A process control apparatus comprising:
- controller means for performing a control operation including an integral operation for a set point signal supplied to a process and an output signal from the process;
a reference model having a desired transfer function of a control system including said process and said controller means and receiving the set point signal;
first subtracting means for subtracting an output signal of the reference model from the output signal of said process to obtain an output error;
output error compensating means for performing control operation including an integral operation for an output error generated from said first subtracting means and for generating a compensation signal such that the output error becomes zero; and
second subtracting means for subtracting an output of said output error compensating means from an output of said controller means and for supplying a subtraction result as a control signal to said process.
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Abstract
A process control apparatus has a controller for performing a control operation including an integral operation for a set point signal supplied to a process and an output signal from the process and for generating a control signal to the process, and a reference model which has a desired transfer function of a control system and which receives the set point signal. The process control apparatus further has a first subtractor for subtracting the output signal of the reference model from the output signal of the process, an output error compensator for performing a control operation including an integral operation for the output error and for generating a compensation signal in such a manner that the output error becomes zero, and a second subtractor for subtracting the compensation signal from the output control signal of the controller.
52 Citations
6 Claims
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1. A process control apparatus comprising:
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controller means for performing a control operation including an integral operation for a set point signal supplied to a process and an output signal from the process; a reference model having a desired transfer function of a control system including said process and said controller means and receiving the set point signal; first subtracting means for subtracting an output signal of the reference model from the output signal of said process to obtain an output error; output error compensating means for performing control operation including an integral operation for an output error generated from said first subtracting means and for generating a compensation signal such that the output error becomes zero; and second subtracting means for subtracting an output of said output error compensating means from an output of said controller means and for supplying a subtraction result as a control signal to said process. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification