Cutting edge motion control solutions from LG Motion for science and technology applications

LG Motion works closely with the NPL (National Physics Laboratory) on a number of diverse projects where very often customised motion control solutions are required.

Recently the NPL approached LG Motion with a requirement for an upgrade to the National Reference Reflectometer (NRR). There is an internationally agreed method for describing colour which mathematically combines the spectral reflectance, transmittance or emission data for the material or light source with the spectral visual efficiency of the human eye.

The NPL measures reflected colour using a calibrated spectrophotometer which compares the results with an NPL master white standard calibrated on the National Reference Reflectometer (NRR).

Rotary table application

The spectrophotometer evaluates the spectral reflectance of the measured surface, a process which is controlled by a motorised table designed and supplied by LG Motion.

The rotary table has 360 degrees rotation capability and a stepper motor and the assembly is fitted with an incremental angle encoder, mounted on the moving top. A display for encoder readout from Heidenhain completes the system.

Rotary stage features

The rotary table delivers precise positioning via a 90:1 ratio worm wheel. A central aperture of 110mm allows for services and other connections to be made through the centre of the table giving added flexibility when designing experiments or processing with external services.

• Usable travel 360 degrees
• Positional repeatability <0,02 degrees
• Maximum load 500kg, centrally mounted
• Rotary encoder Type: ERO 785 − Inc’ 36000ppr / min.
• Home datum sensor PNP normally open
• Motors Stepper

About LG Motion

The Basingstoke based company design and manufactures a wide range of standard and customised motion control components and systems. The portfolio includes precise, reliable, multi-axis motion control components which can be modified and enhanced into customised solution packages. LG Motion control systems, quite simply, make things go in and out, up and down and round and round!