Weaving apparatus including switched reluctance drive
AssigneeSwitched Reluctance Drives Limited
InventorsGeoffrey T. Brown, Michael J. Turner
Life of this patent
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Abstract
Weaving apparatus comprises a warp beam bearing warp threads, a loom on which the warp threads are woven with weft threads, and a take-up roller for taking up the woven material. The loom is powered by a main loom motor. Either or both of the take-up roller and the warp beam are controlled by switched reluctance motors. The switched reluctance motor is able to maintain correct tension in the warp threads or the woven material without generating excessive heat in maintaining a desired position.
Claims20
A weaving apparatus comprising a loom for weaving warp and weft threads, a warp beam, a warp beam motor operable to move the warp beam to introduce the warp threads to the loom, a take-up roller for drawing the warp and weft threads from the loom, a switched reluctance motor operably connected with the take-up roller, and control means to produce a control signal to rotate the switched reluctance motor to take up the warp and weft threads.
A weaving apparatus comprising a loom for weaving warp and weft threads, a warp beam, a take-up roller, a take-up motor operable to move the take-up roller to draw the woven material from the loom, warp tension monitoring means, a switched reluctance motor operably connected with the warp beam, and control means responsive to the output of the warp tension monitoring means to produce a control signal to rotate the switched reluctance motor to maintain a desired tension on the warp.
A loom system for weaving warp and weft threads comprising:
- a warp beam,
- a warp beam motor coupled to the warp beam, the warp beam motor operable to move the warp beam to introduce the warp threads to the loom,
- a take-up roller for drawing the warp and weft threads from the loom,
- a first switched reluctance motor operably connected with the take-up roller, the switched reluctance motor including at least one phase winding;
- a first switching circuit coupled to the at least one phase winding of the first switched reluctance motor and to a source of electric power, the switching circuit having a control input;
- and
- a digital controller having a first output coupled to the control input of the first switching circuit, the digital controller producing output signals at the first output to control the coupling of the at least one phase winding of the first switched reluctance motor to the source of electric power.
A loom system for weaving warp and weft threads comprising:
- a warp beam,
- a first switched reluctance motor operably connected to the warp beam, the first switched reluctance motor including a phase winding;
- a take-up roller for drawing the woven material from the loom,
- a motor operably connected with the take-up roller;
- a warp tension detector for producing at an output a signal indicative of the tension of the warp threads;
- and
- a digital controller having a first input coupled to receive the output of the warp tension detector, the digital controller producing output signals at a first output to control the energization of the phase winding of the first switched reluctance motor.
Dependencies are inferred from the claim text.