Auto-calibration of attraction-only type actuator commutations

Details Auto-calibration of attraction-only type actuator commutations Auto-calibration of attraction-only type actuator commutations

2006-04-25

2006-04-25

Schuberg, Darren (Department: 2834)

Electricity: motive power systems

Linear-movement motors

C310S012060, C250S491100, C355S072000

Reexamination Certificate

active

07034474

ABSTRACT:
A stage assembly (220) for moving a device (200) includes a stage (208), an attraction-only type actuator pair (426) that moves the stage (208), and a control system (24). In one embodiment, the actuator pair (426) includes a first electromagnet (436F), a first conductor (438F) and a first target (440F) having a first target surface (442F). The actuator pair also includes a second electromagnet (436S), a second conductor (438S) and a second target (440S) having a second target surface (442S). The first electromagnet (436F) is positioned at a first angle θ1relative to a first target surface (442F) and the second electromagnet (436S) is positioned at a second angle θ2relative to the second target surface (442S). The control system (24) directs a first current to one or more of the electromagnets based on at least one of the angles θ1, θ2. Further, one or more electromagnets (436) can include a first measurement point and a second measurement point. The control system (24) can direct current to the actuator pair (426) based on the relative distance between the first and second measurement points and the corresponding target surface (442).

REFERENCES:
patent: 6281655 (2001-08-01), Poon et al.
patent: 6486941 (2002-11-01), Hazelton et al.

Affiliated with

Also associated with

Rating

Auto-calibration of attraction-only type actuator commutations does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Auto-calibration of attraction-only type actuator commutations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Auto-calibration of attraction-only type actuator commutations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3582588