| GGG prototype: the central suspension |
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| Central
laminar suspension carrying whole weight. It |
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| connects
the midpoint of the coupling arm (bottom) to the |
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| suspension shaft
(top). |
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| Inclination of coupling arm is |
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| adjusted (in 2D): |
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| corse 5
gr; |
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| fine 0.5 gr; |
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| driving signal comes from |
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| main sensors as a constant |
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| offset in rotating frame — |
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| once capacitance bridge has |
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| been electrically balanced) |
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