Secondary for linear drive motor comprising sheet of highly permeable magnetic material having synchronized motor teeth, encoder teeth, and commutation tracks integrally formed therein

摘要

A secondary for a motor, for instance a linear drive motor, has a sheet of highly magnetic permeable material with a plurality of slots extending through the sheet spaced along a length of the sheet. The slots define a plurality of teeth in the sheet and enable the sheet to be conformable to a mounting surface when forming the secondary of the motor. The top surface of the sheet has a plurality of pockets formed adjacent the plurality of slots. The pockets extend parallel to the width and are spaced along the length of the sheet. The pockets form a sensor operatively connected to a control of the motor. The sensor may be an encoder, and/or the sensor may be operatively connected to a control for controlling commutation of the motor, and/or setting positional limits and/or “home(s)” for the motor, providing absolute positional information and/or providing information about the sheet, for instance, the identity of one platen among many.

主权项

1. A secondary for a motor comprising:
a sheet of magnetic permeable material, the sheet having a width and a length, and a first surface and an opposite second surface with a thickness extending therebetween, the sheet having a plurality of slots in the first and second surfaces and at least partially extending through the sheet thickness parallel to the width of the sheet and spaced along a length of the sheet, the slots defining a plurality of teeth in the sheet between the slots and enabling the sheet to be conformable to a mounting surface to which the sheet is mounted when forming the secondary of the motor, the plurality of teeth having a motor pitch, the first surface having a plurality of pockets formed adjacent the plurality of slots, the pockets extending parallel to the width and being spaced along the length of the sheet, the pockets forming a sensor operatively connected to a control of the motor.