In this paper, the authors propose a new method to compute the fuzzy latest times and float times of activities for a project scheduling problem with fuzzy activity times. The authors have considered LR fuzzy numbers to represent the activity times. As the data of the problem are LR fuzzy numbers, the authors have shown that the results are also in terms of LR fuzzy numbers. Total float time of...

Abstarct This paper addresses the control problem of starting up a non-isothermal CSTR. The startup problem is of dual objectives. One objective is to fill up the tank and the other is to achieve certain reaction conversion. The two objectives compete with each other because each has a different gain sign. Consequently, standard PI algorithms may not perform well. In fact, nonlinear control alg...

Scheduling design of control tasks with fuzzy deadline is considered. By introducing the dedication concept to describe the scheduling criticality of a control task, the largest dedication first with preemption threshold is presented and the preemption threshold is used to control the context switching among control tasks. Every control task is dynamically assigned its priority and feasible pre...

In this article, we present the design and implementation of different control strategies for position a 2-Degree-of-Freedom (DoF) robotic arm, namely gain scheduling per trenches, by interpolation, adaptive control, fuzzy logic. The first link robot is driven an Alternating Current Brushless Permanent Magnet Motor (ACBPMM) through three-phase multi-level inverter with 27 levels voltage phase. ...

Due to the complicated circumstances in workshop, most of the conventional scheduling algorithms fail to meet the requirements of instantaneity, complexity, and dynamicity in job-shop scheduling problems. Compared with the static algorithms, dynamic scheduling algorithms can better fulfill the requirements in real situations. Considering that both flexibility and fuzzy processing time are commo...

This paper addresses the study of a linkage network of biserial queues linked to a common server with a multistage flowshop scheduling system having ‘m’ machines or servers in series under fuzzy environment. Waiting lines or queues are commonly occurred both in everyday life and in a variety of business and industrial situations. Also, the flowshop scheduling is an important task when a number ...

Real-time cell scheduling is a promising area for the application of evolvable hardware (EHW). In this paper, we describe an intrinsic evolvable and online adaptive EHW for solving the packet switching problem. Based on the coding and evolution scheme, we refer to it as evolvable fuzzy hardware (EFH), an extension of our proposed evolvable fuzzy system (EFS) [1, 2] and reconfigurable fuzzy infe...

This paper proposes a fuzzy rule-based system for an adaptive scheduling, which dynamically selects and applies the most suitable strategy according to the current state of the scheduling environment. The adaptive scheduling problem is generally considered as a classification task since the performance of the adaptive scheduling system depends on the effectiveness of the mapping knowledge betwe...