# US 2020/0401737 A1 · Design assistance apparatus and design assistance method

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- Number: US 2020/0401737 A1
- Document ID: US20200401737A1
- Status: Published application
- Kind: A1
- Application number: 16/872,458
- Filed: 2020-05-12
- Published: 2020-12-24
- Earliest claimed: 2019-06-21
- Assignees: Hitachi, Ltd.
- Applicants: Hitachi, Ltd.
- Inventors: Makoto ONODERA; Yuki ITABAYASHI; Chikara KONGOU; Masaki SHINTANI; Hiroki KAWAMOTO
- Web page: https://patentgrep.com/patent/US20200401737A1

## CPC

- G06F 30/17: Mechanical parametric or variational design
- G06F 30/20: Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30)
- G06F 2111/04: Constraint-based CAD
- G06F 2119/20: Design reuse, reusability analysis or reusability optimisation
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A plurality of 3D CAD data which has been commercialized in the past and released is extracted according to a design rule. A main feature amount is measured for each of the plurality of 3D CAD data extracted. A related feature amount defined according to the main feature amount is acquired or measured for each of the plurality of 3D CAD data extracted. A statistical value based on the main feature amount and the related feature amount is calculated. The statistical value is visualized in order to identify an allowable range of the main feature amounts or related feature amounts that are highly related to the main feature amount.

## Claims

### Claim 1

A design assistance apparatus that assists quantification of a threshold value of a main feature amount included in a design rule, the design assistance apparatus comprising:
a processor;
a memory; and
a design rule quantification program stored in the memory and configured to be executed by the processor,
wherein
the design rule quantification program includes a three-dimensional CAD data group extraction unit, a main feature amount measurement unit, a related feature amount extraction unit, a statistical value calculation unit, and a statistical value visualization unit,
the three-dimensional CAD data group extraction unit extracts, according to the design rule, a plurality of three-dimensional CAD data commercialized in the past and released,
the main feature amount measurement unit measures the main feature amount for each of the plurality of three-dimensional CAD data that are extracted,
the related feature amount extraction unit acquires or measures a related feature amount defined according to the main feature amount for each of the plurality of three-dimensional CAD data that are extracted,
the statistical value calculation unit calculates a statistical value based on the main feature amount and the related feature amount, and
the statistical value visualization unit visualizes the statistical value in order to identify an allowable range of the main feature amount or the related feature amount highly relevant to the main feature amount.

### Claim 2 (depends on 1)

The design assistance apparatus according to claim 1, wherein
the design rule quantification program has a feature amount measurement procedure registration unit,
the feature amount measurement procedure registration unit defines a procedure for measuring a feature amount for the three-dimensional CAD data to create measurement procedure data, and
the main feature amount measurement unit measures the main feature amount using the measurement procedure data.

### Claim 3 (depends on 1)

The design assistance apparatus according to claim 1, wherein
the main feature amount or the related feature amount includes a dimension parameter, a shape characteristic parameter, a number parameter, and an attribute parameter.

### Claim 4

A design assistance method for assisting quantification of a threshold value of a main feature amount included in a design rule, the design assistance method comprising:
extracting, according to the design rule, a plurality of three-dimensional CAD data commercialized in the past and released;
measuring the main feature amount for each of the plurality of three-dimensional CAD data that are extracted;
acquiring or measuring a related feature amount defined according to the main feature amount for each of the plurality of three-dimensional CAD data that are extracted;
calculating a statistical value based on the main feature amount and the related feature amount; and
visualizing the statistical value in order to identify an allowable range of the main feature amount or the related feature amount highly relevant to the main feature amount.

### Claim 5 (depends on 4)

The design assistance method according to claim 4, wherein
a procedure for measuring a feature amount for the three-dimensional CAD data is defined to create measurement procedure data, and
the main feature amount is measured using the measurement procedure data.

### Claim 6 (depends on 4)

The design assistance method according to claim 4, wherein
the main feature amount or the related feature amount includes a dimension parameter, a shape characteristic parameter, a number parameter, and an attribute parameter.