Low‐sensitivity controllers for discrete‐time systems

Abstract

The problem of trajectory sensitivity considered in the literature was restricted to the continuous-time systems. Some of the criteria provided in previous work (9, 10) are extended to the discrete-time control systems. Two methods based on the Z-domain design technique are developed to overcome the difficulty of obtaining the variations of control due to the changes of system parameters. The obtained Z-domain controllers are particularly suitable for implementation on a microprocessor or digital computer. mm m (9 .10)

Effect of Addition of Al₂O₃-SiO₂ Gel Powder on Strength of Al₂O₃-MgO Unfired Bricks

“…It is expected to act as a binder of Al 2 O 3 -MgO unfired bricks. Niu Sensen [3,4] have researched the performance of Al 2 O 3 -SiO 2 gel powder bonded Al 2 O 3 -MgO unfired bricks and reported the influences of the addition of Cr 2 O 3 , aluminium powder. Here, the effect of Al 2 O 3 -SiO 2 gel powder on the performance of room temperature and hot temperature strength were presented.…”