Absolute Move
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AC Servo
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Accuracy
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Acme Screw/Nut
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Auto-phasing
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Axial Loading
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Actuator
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Anodizing
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Auxiliary Carrier
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| Absolute Move |
| A move with reference to a fixed absolute zero location. |
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| AC Servo |
| Motor/Drive that generates sinusoidal motor currents and sinusoidal back EMF in a brushless motor. |
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| Accuracy |
The degree to which an actuator is able to move to a specific commanded point. On the bullseye below, notice that all the holes are centered around the middle of the target, but the grouping is not very close together. Good accuracy does not require good repeatability. (see repeatability & accuracy
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| Acme Screw/Nut |
| Threaded screw and nut design which utilizes sliding surfaces between the two. Typical efficiencies are between 60-70%. |
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| Auto-phasing |
| The drive function that determines the motor’s angular rotor position for commutation without the need for Hall Effect switches. |
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| Axial Loading |
| Load where the force is acting along the axis of actuator (bearing) in any direction. |
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| Actuator |
| A mechanism for moving or controlling something indirectly instead of by hand. |
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| Anodizing |
| Protective treatment for aluminum that involves subjecting the metal to electrolytic action in a chemical bath, to create a protective film of aluminum oxide with a very smooth finish. |
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| Auxiliary Carrier |
| An option for band cylinders or linear slides that increases the load capacity of the cylinder as well as increasing the capacity of bending moment about the Y axis. Note: internal cushion will not work when auxiliary carrier ordered without piston, it will be necessary to add external shock absorbers. |
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