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subsystem vs sub-system

Both 'subsystem' and 'sub-system' are correct, but 'subsystem' is more commonly used in English. The hyphenated form 'sub-system' is less common and may be used in specific technical or formal contexts.

Last updated: March 25, 2024 • 3700 views

subsystem

This is a correct and commonly used term in English.

The term 'subsystem' refers to a system or part of a system that operates independently within a larger system. It is used in various technical and organizational contexts.
  • They interface with the rolling stock subsystem.
  • This Annex indicates the assessment of conformity of the energy subsystem.
  • The aim is to develop innovative, cost-effective and reliable micro-systems and reconfigurable, miniaturised subsystem modules.
  • Section 5 describes the interoperability constituents adopted for the control-command subsystem.
  • Requirements are described for the subsystem under normal service conditions.
  • Electrical protection interfaces with the High Speed Rolling Stock subsystem.
  • Vehicle and pantograph sway interfaces with the Infrastructure subsystem.
  • The arrangement of pantographs interfaces with the Energy subsystem.
  • This interfaces with the Control-Command and Signalling subsystem.
  • The control-command subsystem requires provision of the guaranteed train braking performance.
  • This TSI concerns the subsystem telematics applications for passenger services.
  • It's in the security field subsystem, labelled 'ANA'.
  • Regarding interoperability, the maintenance subsystem is characterised as follows:
  • An EC declaration of suitability for use is not required for interoperability constituents of the maintenance subsystem.
  • structure of subsystem, including constituent assembly and overall adjustments,
  • Compatibility between the control-command subsystem and other TSI subsystems.
  • Voltage and frequency and their permissible ranges interface with the rolling stock subsystem.
  • The control-command and signalling subsystem shall provide the required signals to the traction units.
  • Specific requirements are not necessary for the energy subsystem of interoperable high-speed lines.
  • Therefore, point 4.2.2.5 gives a requirement on limitation of power consumption by rolling stock subsystem.

Alternatives:

  • component
  • module
  • element
  • part
  • unit

sub-system

This is a correct term in English, but less commonly used.

The term 'sub-system' is a hyphenated form of 'subsystem' and may be used in specific technical or formal contexts. It refers to a system or part of a system that operates independently within a larger system.
  • control-command sub-system information (Section 4.2.4)
  • The first TSI concerning the 'control-command and signalling' sub-system came into force in 2002.
  • The first high speed TSI of the rolling stock sub-system, adopted as Annex to Decision 2002/735/EC, came into force in 2002.
  • Commission Decision 2002/735/EC established the first technical specification for interoperability (TSI) concerning the trans-European high speed rolling stock sub-system.
  • The sub-system characteristics that must be assessed in the different phases of design, development and production are marked by X in Table E.
  • The sub-system characteristics to be assessed in the different phases of design, development and production are marked by X in Table E.1 for Infrastructure subsystem and Table E.2 for Rolling Stock subsystem.
  • Commission Decision 2002/735/EC [2] established the first technical specification for interoperability (TSI) concerning the trans-European high speed rolling stock sub-system.
  • The first TSI concerning the 'rolling stock' sub-system, came into force in 2002.
  • The first TSI concerning the 'energy' sub-system, came into force in 2002.
  • The TSI allows for a transition period during which the conformity assessment and certification of interoperability constituents may be carried out as part of the sub-system.
  • The TSI allows for a transition period during which the conformity assessment and certification of interoperability constituents may be carried out as part of the sub-system.
  • 32008 D 0284: Commission Decision 2008/284/EC of 6 March 2008 concerning a technical specification for interoperability relating to the energy sub-system of the trans-European high-speed rail system (OJ L 104, 14.4.2008, p. 1).
  • 32008 D 0232: Commission Decision 2008/232/EC of 21 February 2008 concerning a technical specification for interoperability relating to the rolling stock sub-system of the trans-European high-speed rail system (OJ L 84, 26.3.2008, p. 132).
  • concerning a technical specification for interoperability relating to the 'energy' sub-system of the trans-European high-speed rail system
  • The stabilised temperature of the test apparatus and the vehicle or sub-system must be 20º ± 4 º C.
  • Commission Decision 2008/232/EC of 21 February 2008 concerning a technical specification for interoperability relating to the rolling stock sub-system of the trans-European high-speed rail system (OJ L 84, 26.3.2008, p. 132).
  • Malfunctions and the reduction in efficiency of a NOx after-treatment system using a reagent and the reagent dosing sub-system shall be monitored.
  • The sub-assembly 'non ballasted track' of the 'infrastructure' sub-system is defined as a 'novel solution' for the purposes of this TSI.
  • concerning a technical specification for interoperability relating to the 'rolling stock' sub-system of the trans-European high-speed rail system
  • Draft Commission decision concerning a technical specification for interoperability relating to the energy sub-system of the trans-European conventional rail system (D007189/02 - 2010/2818(RPS) - deadline: 13.10.2010)

Alternatives:

  • component
  • module
  • element
  • part
  • unit

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