Target value processing unit, temperature controller, control process implementing system, process controlling method, target value processing program, and recording medium

• US 20050192681A1
• Filed: 02/23/2005
• Published: 09/01/2005
• Est. Priority Date: 02/24/2004
• Status: Active Grant

• Current Assignee: Omron Corporation
• Original Assignee: Omron Corporation
• Inventors: Wakabayashi, Takeshi, Yamada, Takaaki, Iwai, Yosuke, Matsunaga, Nobutomo, Tsuboi, Kazuo, Kawaji, Shigeyasu, Nanno, Ikuo, Tanaka, Masahito
• Granted Patent: US 7,218,999 B2
• Time in Patent Office: Days
• US Class Current: 700/29
• CPC Class Codes: G05B 11/32 with inputs from more than one sensing element; with outputs to more than one correcting element
• CPC Class Codes: G05B 11/42 for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
• CPC Class Codes: G05B 5/01 electric

Abstract

A target value processing unit, includes: an input section to which a target value signal showing a target value of a control process is inputted; a target value shaping unit shaping the target value signal inputted to the input section, into a signal form which is proper for a control treatment of a regulator implementing the control process; and an output section outputting to the regulator a shaped target value signal which is shaped by the target value shaping unit. The target value processing unit realizes the high-level control process without improving the regulator.

Claims

1. A target value processing unit, comprising:

an input section to which a target value signal showing a target value of a control process is inputted;

a target value shaping unit shaping the target value signal inputted to the input section into a signal form which is proper for a control treatment of a regulator implementing the control process; and

an output section outputting to the regulator a shaped target value signal which is shaped by the target value shaping unit.

2. The target value processing unit as claimed in claim 1, further comprising at least one of:

a coupler for detachably coupling the target value processing unit to the regulator, and

a communicating member for communicatively connecting the target value processing unit with the regulator.

3. The target value processing unit as claimed in claim 2, wherein

the output section is so structured as to be detachably electrically connected to a target value input section of the regulator by the coupler which makes a mounting-dismounting operation of the target value processing unit and the regulator.

4. The target value processing unit as claimed in claim 1, further comprising:

a memory unit memorizing in advance a shaped pattern of the target value, wherein

the target value shaping unit shapes the target value signal inputted to the input section based on the shaped pattern memorized in the memory unit.

5. The target value processing unit as claimed in claim 4, wherein

the target value shaping unit shapes the target value signal inputted to the input section such that an observation quantity of a control object controlled with the regulator reaches rapidly to the target value.

6. The target value processing unit as claimed in claim 5, wherein

in a period when the observation quantity causes at least one of an overshoot and an undershoot, the target value processing unit shapes the target value signal such that a peak value of the observation quantity causing the at least one of the overshoot and the undershoot becomes the target value.

7. The target value processing unit as claimed in claim 4, wherein

the target value shaping unit takes the following operations:

taking in an observation quantity of a control object which is controlled with the regulator in a state where an unshaped target value signal is supplied in advance to the regulator, and

making the shaped pattern of the target value and memorizing the shaped pattern of the target value in the memory unit such that the thus taken-in observation quantity rapidly reaches the target value, and

wherein

in the target value shape control, the target value shaping unit reads out the shaped pattern from the memory unit to thereby implement the shaping of the target value signal.

8. The target value processing unit as claimed in claim 7, wherein

the target value shaping unit takes in in advance the observation quantity which is obtained when a disturbance is applied, and

the target value shaping unit makes the shaped pattern of the target value such that an influence by the disturbance is rapidly extinguished from the thus taken-in observation quantity, to thereby memorize the shaped pattern in the memory unit.

9. The target value processing unit as claimed in claim 1, wherein

the regulator has a limiter for limiting a control process operation quantity to be outputted to a control object, and

the target value shaping unit takes in a differential output between the control process operation quantity inputted to the limiter and the control process operation quantity outputted from the limiter, and shapes the target value signal such that the thus taken-in differential output is rapidly extinguished.

10. The target value processing unit as claimed in claim 1, further comprising:

a waveform generator for generating a waveform based on a parameter to be set, and

a processing unit for processing the target value signal to be outputted as the shaped target value signal based on the waveform generated by the waveform generator.

11. The target value processing unit as claimed in claim 1, further comprising:

a parameter generator for generating a parameter by taking in the following;

an observation quantity of a control object which is controlled with the regulator in a state where an unshaped target value signal is supplied in advance to the regulator, and

an observation quantity of a control object which is controlled with the regulator in a state where a predetermined target value signal is supplied to the regulator,

a waveform generator for generating a waveform based on the parameter generated by the parameter generator, and

a processing unit for processing the target value signal to be outputted as the shaped target value signal based on the waveform generated by the waveform generator.

12. The target value processing unit as claimed in claim 1, further comprising:

a saturation quantity forecaster for forecasting a saturation quantity of a control process operation quantity of the regulator, and

a processing unit for processing the target value signal based on the saturation quantity forecasted by the saturation quantity forecaster in such a manner as to eliminate the forecasted saturation quantity and then output the thus processed target value signal as the shaped target value signal.

13. A temperature controller, comprising:

a target value input section to which the shaped target value signal outputted from the output section of the target value processing unit as claimed in claim 1 is inputted.

14. A control process implementing system, comprising:

a target value supplying unit for generating a target value signal showing a target value of a control process;

the target value processing unit as claimed in claim 1 which shapes the target value signal generated by the target value supplying unit; and

a regulator implementing a control process based on a shaped target value signal shaped by the target value processing unit.

15. A process controlling method, comprising:

a target value supplying step of generating a target value signal showing a target value of a control process;

a target value processing step of shaping the thus generated target value signal into a signal form which is proper for a control treatment in implementing the control process; and

a control process implementing step of implementing the control process based on the thus shaped target value signal.

16. A target value processing program for shaping a target value signal showing a target value of a control process into a signal form which is proper for a control treatment of a regulator implementing the control process, the target value processing program allowing a computer to implement the following:

a step of generating a waveform based on a set parameter; and

a step of processing the target value signal to be outputted to the regulator based on the thus generated waveform.

17. A recording medium readable in a computer where the target value processing program as claimed in claim 16 is recorded.