(1) In the absence of the upper bound information of time-varying target acceleration, the proposed AFDO can fully estimate the target acceleration.
Moreover, with the help of AFDO, the proposed FTCG law does not require the a priori information on the target acceleration which is needed in .
In Section 3, a novel observer AFDO is developed and the stability proof of the estimation with AFDO is presented.
In this section, a new adaptive finite-time disturbance observer (AFDO) will be proposed to estimate the target acceleration based on ASTW algorithm.
Before giving the AFDO and guidance law of this paper, the following Lemmas 2 and 3, which play important role in the subsequent analysis, are recalled here for convenience.
Then AFDO and the stability analysis are given in Theorem 4.
Taking guidance system (2) into consideration, the AFDO (20) is constructed.
The estimation error of AFDO is defined as [H.sub.2] = [J.sub.1] - [A.sub.T[lambda]].
In addition, this project is supported by the Conference for Food Protection (CFP), the Association of Food and Drug Officials (AFDO
), and the NEHA Board of Directors.