In this paper, a hydraulic motor controller is designed with a fuzzy supported integral sliding mode algorithm. The hydraulic system used in the study was modeled using artificial neural networks. Ability of handling nonlinearity of systems makes sliding mode controller to be a good choose for this system. The integral sliding mode controller can supply the robustness the system against the uncertainties. The basic idea of the proposed control method is to use fuzzy logic for the adaptation of the integral sliding mode control switching gain. Such adjustment reduces the chattering that is the most problem of classical sliding mode control. The equivalent control is computed using the radial basis function neural network. Simulation results of the presented method were compared with conventional PID controller results. It proved that it is more efficient to control the hydraulic system with integral fuzzy sliding mode control using neural network.
With the improvement of distance learning systems, distance laboratory experiments are being more adaptive. Addition to real experiments being done in laboratories, distance laboratory experiments also help to achieve course goals. In this study distance control of hydraulic experiments are aimed. As an experiment set, hydraulic motors are used. A web interface is designed to give theoretical information and control. Experiments are performed on scheduled date by users. Before adapting experiment systems to distance learning system, models are composed. Addition to real system users can also control the system models via web interface. Many control algorithms can be used with the different parameters. Experiment result are written in “.csv” file and showed graphically to the user.
Education is one of the most effected sector by technology. After Communication based technologies started to get into our lives it also accelerated educational processes and their efficiency. One of the most important improvement is being observed in mobile technologies. Mobile technologies improved distance learning which provide us to access learning materials without any time and location problems. Aim in this research is to develop another channel for communication between students and instructor. Mobile technology are used as a substructure. With the mobile learning management system many opportunities are supplied to improve course efficiency. After courses, instructors can send messages, reminders, homework and some other supporting materials to students in mobile platforms. Also feedbacks of homework and quizzes makes the evaluation easier. The continues connection between lecturers and students prevents loss of learning.
In this paper, it is aimed to control experiment sets in laboratories not only at university but also anywhere students are able to reach internet connection. It is a problem for students to repeat the experiment away from laboratories which is important for permanent learning. In actual laboratory environment student can only use experiment sets at university. The tool, electronic control card connected to a computer, makes a bridge from computer to experiment set via internet. A server and client application runs the system with requests and answers. User interfaces can be designed specially to make a best compliance for experiment. Distance control tool is suitable for general experiment sets. Designed tool was tested on Programmable Logic Controller (PLC) experiment set in laboratory and achieved success.
In this paper, a programmable logic controller experiment set for education was designed. First aim is designing a set with same sample experiment blocks, which are used mostly. With integrated sample experiment blocks there is no need for external equipment for experiments. Users only write own codes for PLC control and uses internal blocks. With internal blocks user needs less connection to compose experiment circuit. Integral components make experiment electrically safer. The second goal is making design compatible with other equipment. For increasing compatibility, some energy supply ports and data ports are put set. Another aim is cost of experiment set. The design must be completed minimum cost.
With digital boards student can interact with claver course contents, teachers can save the board picture. It can be thought that digital boards are so efficient and useful. However, the main point is adaptation capabilities of existing teachers. Considering the capabilities of teachers on technological materials, it is difficult to achieve targeted success. So before building technological infrastructure to every classroom, it is important to make knowledge about these technologies. Because it is more important how you can benefit from technology than what it can be do. As a result in-service training is very important about using new technologies for existing teachers before facing with that. The sample of this study comprised of 50 participants who are high school and primary school teachers. The data were collected through a questionnaire
This paper describes a microcontroller-based, low-cost and multi-function data acquisition card design. A wide user audience for this product and a wide field of use are considered on the basis of containing many functions. Many kinds of projects in universities need data collection interfaces, which greatly increases the cost of project. Comparing with other data acquisition cards, this design comes to the flexibility to change the number of and the functions of ports which is the part of the designed data acquisition card. Also with this design more than one system can be controlled simultaneously.