SVT Gears VI

SVT Gears VI

Owning Palette: Machine Characteristics VIs

Requires: Sound and Vibration Toolkit

Calculates characteristic frequencies or orders of gearboxes.

Details  

	desired units specifies whether this VI returns characteristic frequencies or orders. 0 Hz (default)—Specifies to return characteristic frequencies. 1 Order—Specifies to return characteristic orders.
	gear1 nominal speed [RPM] specifies the rotational speed, in revolutions per minute, of one gear of the gearbox. This VI assigns the known gear as gear 1 and the unknown gear as gear 2. Because the calculation of characteristic orders does not require rotational speed information, this VI ignores gear1 nominal speed [RPM] when you set desired units to Order. The default is 1200.
	number of gear1 teeth specifies the number of teeth on gear 1. The default is 17.
	number of gear2 teeth specifies the number of teeth on gear 2. The default is 53.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	gear2 nominal speed [RPM] returns the rotational speed of gear 2, or the unknown gear, in revolutions per minute.
	gear mesh frequency returns the frequency at which gear teeth mesh together in the gearbox.
	gear assembly phase frequency returns the gear assembly phase frequency of the gearbox, which is the characteristic frequency of gear faults caused by a gear wear pattern.
	hunting tooth frequency returns the hunting tooth frequency of the gearbox, which is the frequency at which a particular tooth on gear 1 meshes with a particular tooth on gear 2.
	error out contains error information. This output provides standard error out functionality.

SVT Gears Details

This VI uses the following equations to calculate characteristic frequencies or orders of a gearbox.

where N_A is the assembly phase factor, or the greatest common divisor of number of gear1 teeth and number of gear2 teeth.