ISO 5344:2004

Overview - What ISO 5344:2004 covers

ISO 5344:2004 specifies the performance characteristics and test conditions for electrodynamic vibration generating systems (vibrators + power amplifiers). It defines how suppliers, purchasers and test bodies should state, calculate and verify system performance for equipment that produces sine, random and impulse rectilinear vibration. The standard also lists additional equipment characteristics (Annex A) that manufacturers can declare and provides procedures for both measured and calculated system performance when amplifier and vibrator come from different sources.

Key topics and technical requirements

• System definitions and scope: clear terminology for vibrator, power amplifier and system combinations; exclusions (e.g., signal sources, fixtures) are identified.
• Performance specifications: formats for declaring vibrator and amplifier performance and the combined system performance (S,a).
• Calculated system performance: procedures to combine amplifier data from one source and vibrator data from another; the standard warns calculated performance is less precise and recommends a reserve of calculated force.
• Drive and interface data: guidance to specify acquisition of vibrator/amplifier interface data and assignment of responsibility for performance calculations.
• Capability implications: when random or impulse capability is specified, the implied minimum sine capability is defined (sine needed for transfer function and response evaluation).
• Tests and measurements: conditioning, endurance tests, spill‑over limits, distortion tests and impulse generation procedures to verify performance and reliability.
• Amplifier types: discussion of linear and switching power amplifiers, including typical distortion and switching-frequency trends (document notes examples of distortion ranges for linear and switching designs).
• Manufacturer declarations: Annex A lists additional characteristics that can be declared to aid procurement decisions.

Practical applications - who uses ISO 5344:2004

• Vibration test laboratories selecting or expanding electrodynamic test systems.
• Equipment buyers and spec writers preparing purchase specifications and acceptance tests.
• Manufacturers and suppliers declaring rated performance and producing conformity documentation.
• Test organizations executing measured performance, endurance and distortion tests for acceptance or qualification.

ISO 5344 helps ensure consistent, comparable performance statements and supports informed selection of electrodynamic vibration generating systems for product qualification, durability testing and R&D.

Related standards

• ISO 2041:1990 - Vibration and shock - Vocabulary
• ISO 15261 - Vibration and shock generating systems - Vocabulary

Keywords: ISO 5344:2004, electrodynamic vibration generating systems, vibration generator, power amplifier, performance characteristics, sine, random, impulse, system performance, calculated system performance, endurance tests.