Filter

Abstract

Abstract PURPOSE:To obtain a less-overshoot filter with a good rising characteristic by controlling to hold the internal state quantity of an alpha-B tracker constant when the difference between the output of the alpha-B tracker and the output of a limiter is greater than the limited value of the limiter. CONSTITUTION:The alpha-B tracker 11 is supplied with an input signal Uk containing, for example, azimuth information on a target and outputs azimuth data Xk on the target to the limiter 12. The limiter 12 outputs azimuth data Yk on the target and also supplies a control signal CS when turning on, i.e. when ¦Xk-Yk-1¦>DELTA, so that the quantity of internal state of the alpha-beta tracker 11 is held constant. In this case, (k) is order in terms of time and DELTA is the limit value of the limiter. The output Xk of the tracker 11 rises fast without any overshoot as shown by (b), so excellent transient response charateristics are obtained.

Inventors

• 👤 Mitsuyoshi Shinonaga
• 👤 充良 篠永

Bibliographic Details