The pace advances principle of work of system of type servo drive
- source:PERFSO CNC Machining
The controls numerical control machine tool to control a system to give out N that workbench displacement measures feed pulse, after classics drive circuitry, become control pace to enter the electrify of winding of electric machinery stator, n that cut off the power to believe a metabolic frequency N, the N of electrify status change that makes the pace enters winding of electric machinery stator second. Work into electric machinery by the pace the principle is knowable, the metabolic frequency N of condition of stator winding electrify decided the pace enters the angular displacement φ of electric machinery, α of φ ＝ N (α namely) of step pitch horn. This angular displacement changes to measure L for the displacement of workbench via turning after guide screw, nut, (T is pitch) . Namely pace of → of metabolic frequency N takes the position of electrify of winding of stator of quantitative N → of feed pulse the displacement of workbench of corner φ → of electric machinery measures L. 2.
The control machine tool of workbench feed speed controls the frequency F of the feed pulse that the system gives out, after classics drive controls route, expression enters the electrify of winding of electric machinery stator, n that cut off the power to believe a metabolic frequency to command a stage, namely frequency of change of status of stator winding electrify. And the rotate speed ω that the metabolic frequency F of condition of stator winding electrify decided to the pace enters electric machinery rotor. After nut of guide screw of classics of ω of this rotor rotate speed is changed, reflect the feed speed V that is workbench. Namely the feed speed V of the workbench of → of rotate speed ω that the pace of → of metabolic frequency F of the condition of electrify of winding of stator of frequency F → of feed pulse enters electric machinery. 3.
The feed pulse that the control of workbench movement way gives out when control system is to when, classics drive controls route, each winding presses the stator that makes the pace enters electric machinery certain ordinal and ordinal electrify, cut off the power; When feed pulse it is negative to when, drive control circuitry makes each winding presses stator with feed pulse be to when contrary ordinal electrify, cut off the power. The working principle that advances electric machinery by the pace is knowable, receive open telegram of winding of electric machinery stator through the pace sequential change, can realize the control that turning into electric machinery or inverts to the pace, realize the control of the feed direction to workbench thereby. The place on put together is narrated, form is taken in open loop pace in servo, the amount of the feed pulse of the input, frequency, direction, via drive control line road and pace enter electric machinery, changeover is speed of the displacement quantity of workbench, feed and feed direction, realize the control that counterpoint moves thereby. CNC Milling