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SYNCHRONIZATION: Chase & Lock
- CHASE
- jump to position, then attempt to follow speed indicated by positional/speed sync signal
- LOCK
- successfully follow speed, and continue to follow speed "closely".
How to Lock
- Phase-locked loops (PLL): classic EE technique, opaque to most
programmers.
- normal operation relies on careful selection of constants.
- handling abnormal situations is always hard and domain-specific.