Discrete-Time Analysis of Usage Parameter Control Functions in ATM Systems

1994 ◽  
pp. 111-131 ◽  
Author(s):  
P. Tran-Gia
Keyword(s):  
Discrete Time ◽  
Parameter Control ◽  
Time Analysis ◽  
Control Functions

scholarly journals Discrete-time inverse optimal control for a reaction wheel pendulum: a passivity-based control approach

2020 ◽  
Vol 19 (4) ◽  
pp. 123-132 ◽  
Author(s):  
Oscar Danilo Montoya ◽  
Walter Gil-González ◽  
Federico Martin Serra
Keyword(s):  
Optimal Control ◽  
Discrete Time ◽  
Point Of View ◽  
Control Analysis ◽  
Inverse Optimal Control ◽  
Reaction Wheel ◽  
Control Approach ◽  
Control Functions ◽  
Passivity Based Control ◽  
The Time Domain

In this paper it is presented the design of a controller for a reaction wheel pendulum using a discrete-time representation via optimal control from the point of view of passivity-based control analysis. The main advantage of the proposed approach is that it allows to guarantee asymptotic stability convergence using a quadratic candidate Lyapunovfunction. Numerical simulations show that the proposed inverse optimal control design permits to reach superiornumerical performance reported by continuous approaches such as Lyapunov control functions and interconnection,and damping assignment passivity-based controllers. An additional advantageof the proposed inverse optimal controlmethod is its easy implementation since it does not employ additional states. It is only required a basic discretizationof the time-domain dynamical model based on the backward representation. All the simulations are carried out inMATLAB/OCTAVE software using a codification on the script environment.

Discrete time analysis of a repairable machine

2002 ◽  
Vol 39 (3) ◽  
pp. 503-516 ◽  
Author(s):  
Attahiru Sule Alfa ◽  
I. T. Castro
Keyword(s):  
Detailed Analysis ◽  
Stationary Distribution ◽  
Discrete Time ◽  
Single Machine ◽  
General Distribution ◽  
Optimal Time ◽  
Time Analysis ◽  
Machine System ◽  
Special Cases

We consider, in discrete time, a single machine system that operates for a period of time represented by a general distribution. This machine is subject to failures during operations and the occurrence of these failures depends on how many times the machine has previously failed. Some failures are repairable and the repair times may or may not depend on the number of times the machine was previously repaired. Repair times also have a general distribution. The operating times of the machine depend on how many times it has failed and was subjected to repairs. Secondly, when the machine experiences a nonrepairable failure, it is replaced by another machine. The replacement machine may be new or a refurbished one. After the Nth failure, the machine is automatically replaced with a new one. We present a detailed analysis of special cases of this system, and we obtain the stationary distribution of the system and the optimal time for replacing the machine with a new one.

scholarly journals Discrete-time analysis of a CPCH access scheme in W-CDMA

2006 ◽  
Vol 5 (7) ◽  
pp. 1575-1578
Author(s):  
MoonYoung Choi ◽  
Yu-Dong Yao ◽  
H. Heffes
Keyword(s):  
Discrete Time ◽  
Time Analysis ◽  
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