This paper denotes a survey on formation control of multimobile robot systems which drawn significant attention for the last years. It is concentrated on the stability of multi mobile robots when they obtained the required formation. Also this paper discusses the approaches of formation control and applications of them in changing and remote environments. Two classifications for the formation control methods are surveyed in this paper: the formation control strategies and the formation control stability. The differences among the surveyed approaches are discussed and the results are summarized.

This paper compares the performance of two types of IR sensors that are used for communication among nodes to get the identity of each other. Practical circuits for these sensor types are built and tested in an environment which has nodes with cylindrical shape. Each node equipped by several pair of sensors: one sensor in each pair works as a transmitter and the other works as a receiver. The communication between sensors is repeated for different angles of rotation to produce a complete performance to each sensor. Based on the results of these comparisons, the TSOP4P38 IR receiver with remote control were chosen for communication in the practical implementation.

In this paper, we produced a study for choosing a suitable environment for indoor localization and communication among several robots by using low-cost infrared sensors. This study is used to compare the performance of the infrared sensors for measuring the distances and the range of communication among robots at indoor environments. This environment is tested under the influence of the sun and the fluorescent lights and with different angles of viewing among these sensors. Practical circuits for these infrared sensor are built and tested in different environments with different angles of view to choose a suitable performance of these sensors.

The demand for electrical energy is steadily increasing, and the buildings sector represents one of the largest energy end use. The larger amounts of that energy are wasted due to unnecessary heating and cooling. Several studies have shown that the major reason for this behavior lies in poor controls and the lack of feedback information. In this paper, a new management system is designed and constructed in order to perform saving the electrical energy. This system consist of an Arduino microcontroller with various sensors such as a temperature sensors, simple RF modules as well as actuators to control the air conditions. The principal work of this system is based on measure the temperatures of several rooms in the smart home, and then send these information wirelessly to main control device which employing better controls and feedback information to turns on only one air condition in one room at each time to save the electrical energy. The simple measurement shows that using the suggested system can save the electricity cost for every test case.

In this paper an overview on automated storage and retrieval system AS/RS is denoted. In industries AS/RS systems are the main task that designed for automated storage and retrieval of things in manufacturing where their application vary widely from simple storage and retrieval system for small parts to central systems where production, assembly, and manufacturing operations are concentrically located around them. The selection of the storage system depends upon the available space, weight of items to be stored, method of storage operation and another factors that take the important role in the design of the automated storage and retrieval systems. This paper will have all argument that needed to construct AS/RS system in a survey form which will gives us a highlight about the factors that consider the backbone to build the warehouses. The performance of AS/RS will be the result for interaction of many complex and stochastic subsystems. The differences among the surveyed approaches are discussed and the results are summarized.