ISO 23704-2:2022 サイバー物理的に制御されたスマート工作機械システム（CPSMT）の一般要件— Part 2: サブトラクティブ製造のためのCPSMTのリファレンスアーキテクチャ | ページ 6

3.1

context data

data specifying in which circumstances the state data (see Clause 3.16) is obtained from the various perspectives, including products, processes, tool paths, process variables, etc.

3.2

cyber-physical system (CPS) unit

instance of a CPS (see Clause 3.8 in ISO 23704-1) according to the reference architecture

Note 1 to entry: The CPS unit provides advanced control functionalities for the machine tool unit (see Clause 3.12), interfacing with data from sensors, numerical control kernel/ programmable logic controller, the cyber-supporting system for machine tool (CSSM), shop floor control system (SFCS), and unified interface system (UIS).

3.3

data model

graphical and or lexical representation of data, specifying their properties, structures and interrelationships

[SOURCE:ISO/IEC 19778-1:2015, 3.1.7]

3.4

data processing unit

instance of data processing according to the reference architecture of CPSMT for subtractive manufacturing

3.5

digital twin unit

instance of a digital twin according to the reference architecture of CPSMT for subtractive manufacturing.

Note 1 to entry: The digital twin unit describes the digital replica or digital representation of a machine tool system and its surrounding environment.

Note 2 to entry: The perspective of digital representation of the machine tool system contains: 1) machine body, 2) cutting tool, 3) workpiece, and 4) environment.

Note 3 to entry: The digital representation of the machine tool consists of the data model and behavior model.

3.6

element

component or part as a constituent function in a unit (see Clause 3.17)

3.7

engineering phase context data

part of the context data for machining specified in the engineering phase, such as computer-aided design, process planning, manufacturing data, etc.

Note 1 to entry: Example data includes ISO 14649, ISO 6983, ISO 13399, etc.

3.8

external interface unit

unit (see Clause 3.17) that receives data from 1) the data processing unit (see Clause 3.4), 2) the MAPE unit (see Clause 3.13) via execution element, and transmits that data to an SFCS and a UIS instance of interface with external entities according to the reference architecture for subtractive manufacturing

3.9

inner-loop element

part of the CPS unit (see Clause 3.2) that detects and resolves abnormalities for the machine tool unit in hard-real time

Note 1 to entry: See Clause 3.17 of ISO 23704-1 for the definition of hard-real time.

3.10

inter-loop element

part of the CPS unit (see Clause 3.2) that generates event-driven control instructions for the machine tool unit based on data from an SFCS for the sake of collaboration

Note 1 to entry: See Clause 3.16 of ISO 23704-1 for the definition of event-driven.

3.11

intra-loop element

part of the CPS unit (see Clause 3.2) that generates control instructions for the machine tool unit based on the data from a CSSM in soft-real time

Note 1 to entry: See Clause 3.28 of ISO 23704-1 for the definition of soft-real time.

3.12

machine tool unit

instance of machine tool according to the reference architecture for subtractive manufacturing

Note 1 to entry: According to ISO 14955-1:2017, the machine tool function consists of machine tool operation (machining process, motion and control), process conditioning, workpiece handling, tool handling or die change, recyclables and waste handling and machine tool cooling/ heating.

3.13

monitoring, analysis, planning, and execution unit

MAPE unit

instance of monitoring, planning, and execution according to the reference architecture

3.14

numerical control kernel

NCK

component for controlling the servo motors consisting of an interpreter, interpolator, acceleration/ deceleration controller, and position controller, etc^[15].

Note 1 to entry: numerical control kernel is the key module not only of the computerized numerical control but also a typical position control for servo motors^[15].

3.15

operation phase context data

set of data specified at the machine tool before machining operation start, including setup data of machine tool, cutting tool, workpiece, etc.

3.16

state data

set of data on the state of the machine tool unit during machining operation from which the key performance indicators of the machine body, cutting tool, workpiece and environment can be identified

Note 1 to entry: Typical means for obtaining the state data are various sensors and a CNC on the machine tool components.

3.17

unit

group of elements (see Clause 3.6) that constitutes part of the reference architecture of a CPCM and a CSSM for subtractive manufacturing

Note 1 to entry: The term “unit” here is used as an instance of a collection of elements.