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US 5,729,114 AGranted
Electronic fast-starting system, particularly suitable for an air loom
AssigneeNuovopignone-Industrie Meccaniche e Fonderia S.p.A.
InventorsGianluigi Sora, Ruggero Manzardo, Vittorio Apolloni, Lucio Sardella
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Abstract
An electronic fast-starting system for a textile loom in which an asynchronous driving motor, whose phase windings are triangularly connected, is mechanically connected to the main crank shaft of the loom and is controlled by an inverter/controller receiving not only the set speed value but also the outlet signal of a speed detector situated on the main crank shaft.
Claims1
An electronic system for fast starting of a textile loom, said system comprising:
- a loom main crankshaft;
- a main asynchronous driving motor;
- an inverter/controller connected directly to said motor, said inverter/controller controlling motor torque during a start-up inertia period to ensure fast starting of said loom;
- a logic control unit connected to said motor via said inverter/controller, wherein said asynchronous motor is mechanically connected to said crankshaft and wherein said motor has phase windings triangularly connected;
- and
- a speed detector system mounted on said main crankshaft and outputting an outlet signal to said inverter/controller, wherein said inverter/controller controls said motor to provide fast starting of said loom by increasing a starting torque of said motor in accordance with a difference in values between a set speed value provided by said logic unit and a loom main crankshaft speed value provided by said outlet signal of said speed detector system.
3 more elements
Dependencies are inferred from the claim text.