Electricity + Control July 2016

DRIVES, MOTORS + SWITCHGEAR

as the steady state error was zero by the time that the drill entered the workpiece this would be of no consequence. System tuning is an acquired skill. In the case of servo systems the rapid response makes tuning much easier than would be the case with process control, where response times can be of the order of hours. Bibliography [1] Craig G. A bench top dynamometer for drives testing. Electricity and Control, May 2015. [2] Craig G. Brushless servo operating principles. Electricity and Control, July 2015. [3] Craig G. Computer Control of a small lathe. Electricity and Control, March 2016. All articles referred to are available in the flip magazines online as well as in E+C Spot On.

• Sizing load and motor correctly makes proper performance possible. • Inertia mismatch should not exceed 10:1. • System tuning requires practice.

take note

Glyn Craig is a director of Techlyn. He has been involved in the mechatronics field for many years. Enquiries: Tel 011 835 1174 or email glyn@techlyn.co.za

BRUSHLESS MOTORS, GEARBOXES AND DRIVES

Supply Voltage 20 - 40V Output 3 Phase 5A Continuous 10A peak Industry standard step and direction input position signals Companion system controllers supplied by us Free tuning software

Contact Glyn Craig 17 Essen Road Ormonde P.O.Box 27682 Bertsham 2013 Tel: Fax:

011 835 1174/5

011 835 3323 e-mail: glyn@techlyn.co.za

July ‘16 Electricity+Control

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