Evaluation Device for Control System, Validation Device Used in Evaluation Device, Method for Evaluating Control System, and Computer Program Used Therein

• US 20070255482A1
• Filed: 12/21/2005
• Published: 11/01/2007
• Est. Priority Date: 01/07/2005
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Fukuda, Koichiro
• Granted Patent: US 7,962,228 B2
• Time in Patent Office: Days
• US Class Current: 701/99
• CPC Class Codes: G05B 17/02 electric

Abstract

An evaluation device (22) comprises an evaluation target model (31) which operates according to a control algorithm to be implemented in the control system, and which outputs a manipulated variable of a predetermined controlled equipment (8) included in the physical device (1) in correspondence with a predetermined input condition, a state quantity presumption model (32) which presumes a state quantity of the physical device subjected to an influence of an operation of the controlled equipment in correspondence with a predetermined state quantity presumption condition, and which outputs the presumed state quantity, and a model control device (33) which provides the input condition to the evaluation target model so that the manipulated variable is output therefrom.

Claims

1. An evaluation device for a control system of a physical device, comprising:

an evaluation target model which operates according to a control algorithm to be implemented in the control system, and which outputs a manipulated variable of a predetermined controlled equipment included in the physical device in correspondence with a predetermined input condition;

a state quantity presumption model which presumes a state quantity of the physical device subjected to an influence of an operation of the controlled equipment in correspondence with a predetermined state quantity presumption condition, and which outputs the presumed state quantity; and

a model control device which provides the input condition to the evaluation target model so that the manipulated variable is output therefrom and which provides, as the state quantity presumption condition, an error regarding at least one parameter to be referred in a presumption of the state quantity, which is not considered by the evaluation target model, in addition to the input condition provided to the evaluation target model and the manipulated variable output from the evaluation target model, to the state quantity presumption model so that a state quantity reflecting an influence of the error on a state quantity corresponding to the manipulated variable output from the evaluation target model is output from the state quantity presumption model.

2. The evaluation device according to claim 1, wherein the model control device provides the error for a parameter included in the input condition or the manipulated variable output from the evaluation target model.

3. The evaluation device according to claim 1, wherein the evaluation target model presumes a state quantity to be controlled by an operation of the controlled equipment and reflects a presumption result to control of the state quantity, and the state quantity presumption model presumes and outputs a state quantity which is the same kind of the state quantity presumed by the evaluation target model.

4. The evaluation device according to claim 3, wherein the evaluation target model reflects a difference between the state quantity presumed by the evaluation target model and the state quantity presumed by the state quantity presumption model to a presumption of the state quantity in the evaluation target model.

5. The evaluation device according to claim 1, further comprising an analyzing device which quantifies an influence of the error on control of the state quantity of the evaluation target model based on at least one of degree or frequency for the case where the state quantity output from the state quantity presumption model exceeds an allowable region.

6. The evaluation device according to claim 3, further comprising an analyzing device which quantifies an influence of the error on control of the state quantity of the evaluation target model based on a difference of state quantities presumed in the evaluation target model and the state quantity presumption model respectively.

7. The evaluation device according to claim 6, wherein the analyzing device quantifies the influence of the error on the control of the state quantity by the evaluation target model, further taking at least one of degree or frequency for a case where the state quantity output from the state quantity presumption model exceeds a predetermined allowable region into account.

8. The evaluation device according to claim 5, further comprising an analyzing result displaying device which displays an analyzing result quantified by the analyzing device on a predetermined display device.

9. The evaluation device according to claim 8, wherein the analyzing result displaying device performs a predetermined highlighting display when the analyzing result exceeds a predetermined allowable region.

10. The evaluation device according to claim 1, wherein the physical device is an automobile engine, the control algorithm is implementable to an engine control unit as a computer to be combined with the engine, the input condition includes a parameter group for determining an operation condition or an environment condition of the engine, and the controlled equipment is an equipment of the engine, which is operated for controlling the engine.

11. A validation device for evaluating a control system of a physical device in combination with an evaluation target model which operates according to a control algorithm to be implemented in the control system, and which outputs a manipulated variable of a predetermined controlled equipment included in the physical device in correspondence with a predetermined input condition, comprising:

a state quantity presumption model which presumes a state quantity of the physical device subjected to an influence of an operation of the controlled equipment in correspondence with a predetermined state quantity presumption condition, and which outputs the presumed state quantity; and

a model control device which provides the input condition to the evaluation target model so that the manipulated variable is output therefrom and which provides, as the state quantity presumption condition, an error regarding at least one parameter to be referred in a presumption of the state quantity, which is not considered by the evaluation target model, in addition to the input condition provided to the evaluation target model and the manipulated variable output from the evaluation target model, to the state quantity presumption model so that a state quantity reflecting an influence of the error on a state quantity corresponding to the manipulated variable output from the evaluation target model is output from the state quantity presumption model.

12. An evaluation method for evaluating a control system of a physical device, comprising the steps of:

making an evaluation target model having a control algorithm to be implemented in the control system output a manipulated variable of a predetermined controlled equipment included in the physical device in correspondence with a predetermined input condition by providing the input condition to the evaluation target model to make the evaluation target model operate; and

making a state quantity presumption model, which is configured to presume a state quantity of the physical device subjected to an influence of an operation of the controlled equipment, presume and output the state quantity of the physical device subjected to the influence of the operation of the controlled equipment in correspondence with a predetermined state quantity presumption condition by providing the state quantity presumption model with an error regarding at least one parameter to be referred in a presumption of the state quantity, which is not considered by the evaluation target model, as a state quantity presumption condition, in addition to the input condition provided to the evaluation target model and the manipulated variable output from the evaluation target model to make the state quantity presumption model operate.

13. A computer program configured to make a computer serve as:

an evaluation target model which operates according to a control algorithm to be implemented in the control system, and which outputs a manipulated variable of a predetermined controlled equipment included in the physical device in correspondence with a predetermined input condition;

a state quantity presumption model which presumes a state quantity of the physical device subjected to an influence of an operation of the controlled equipment in correspondence with a predetermined state quantity presumption condition, and which outputs the presumed state quantity; and

a model control device which provides the input condition to the evaluation target model so that the manipulated variable is output therefrom and which provides, as the state quantity presumption condition, an error regarding at least one parameter to be referred in a presumption of the state quantity, which is not considered by the evaluation target model, in addition to the input condition provided to the evaluation target model and the manipulated variable output from the evaluation target model, to the state quantity presumption model so that a state quantity reflecting an influence of the error on a state quantity corresponding to the manipulated variable output from the evaluation target model is output from the state quantity presumption model.

14. A computer program for making a computer serve as an element of an evaluation device having an evaluation target model which operates according to a control algorithm to be implemented in a control system of a physical device, and which outputs a manipulated variable of a predetermined controlled equipment included in the physical device in correspondence with a predetermined input condition, the computer program being configured to make the computer serve as:

a state quantity presumption model which presumes a state quantity of the physical device subjected to an influence of an operation of the controlled equipment in correspondence with a predetermined state quantity presumption condition, and which outputs the presumed state quantity; and

a model control device which provides the input condition to the evaluation target model so that the manipulated variable is output therefrom and which provides, as the state quantity presumption condition, an error regarding at least one parameter to be referred in a presumption of the state quantity, which is not considered by the evaluation target model, in addition to the input condition provided to the evaluation target model and the manipulated variable output from the evaluation target model, to the state quantity presumption model so that a state quantity reflecting an influence of the error on a state quantity corresponding to the manipulated variable output from the evaluation target model is output from the state quantity presumption model.