adaptive filter feed-forward的用法和样例：
- Adaptive Filter Theory Fourth Edition.
- AEC is implemented by adaptive filter.
- A method of the adaptive feed forward compensator (AFFC) to correct static nolinear characteristic of the switching solenoids is proposed based on closed loop control.
- The result is useful for she design of feed forward compensation of PMD.
- The pump is warmed up by running on closed circulation between pump and the Filter Feed drum.