This paper proposes to use a robust adaptive controller (RAC) to achieve the desired height control.
The prototype consisted of a fruit holder, a height control mechanism, a knife and its feed controller, and a power transmission system.
The Nabateans, at their height, controlled the trade routes for incense, spice, cotton, silk and ivory between China and India to the east, and Egypt and Greece to the west.
This paper presents an alternate linear height control scheme based on the vertical acceleration measurement.
This design concept is being partly realized by thermal flying height control technique.
As shown in Figure 7, the actual vehicle tests are performed with a city bus equipped with a full-car vehicle height control system.
Based on the established hydro-pneumatic active suspension model a united control strategy of variable structure and PID control is designed for vehicle body height control.
Classical height control loop usually uses a pitch angle measurement in an inner loop to properly damp the short period and phugoid modes for a fixed wing UAV.
However to achieve an ideal flying altitude and a safety low flight is necessary to implement an automatic height control system capable of sustaining the WIG craft stable.
