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Adjustment Algorithm for the LINAC Actuator

IP.com Disclosure Number: IPCOM000035426D
Original Publication Date: 1989-Jul-01
Included in the Prior Art Database: 2005-Jan-28
Document File: 3 page(s) / 156K

Publishing Venue

IBM

Related People

Bulson, LG: AUTHOR [+2]

Abstract

Disclosed is an algorithm which provides consistent adjustment of the LINAC actuator to produce optimum performance. (Image Omitted)

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 56% of the total text.

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Adjustment Algorithm for the LINAC Actuator

Disclosed is an algorithm which provides consistent adjustment of the LINAC actuator to produce optimum performance.

(Image Omitted)

The LINAC actuator (Fig. 1) works as follows: individual armature bars contained in a moveable member, or slider, are horizontally misaligned relative to the pole faces of two stator/coil assemblies posipositioned on either side of the slider. When the coils are energized, the resulting magnetic field causes the slider to move rapidly forward into alignment with the stator pole faces. This motion causes a hard hammer face attached to the front of the slider to impact a band element and thus produce a dot on the paper. The highest impact force will be produced by a unique alignment of the top and bottom stator teeth and the slider bars. Because of the tolerances in the whole assembly, adjustment of the system is necessary to obtain the required actuator performance.

The location of the armature bars is set relative to the housing blocks. The stators, then, must be adjusted independently around the bars. The dense packaging of the actuators makes the stators difficult to access and adjust. A push-only method of stator adjustment, developed in response to these physical space limitations, utilizes push rods which can incrementally move the stators in one direction only, from a forward to a rearward position in the blocks.

(Image Omitted)

The model which shows the relationship of stator position to performance is shown in Fig. 2. The maximum force and the correspondin...