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Öğe Design, Implementation and Test of a Novel Cylindrical Permanent Magnet DC Linear Motor(Mdpi, 2023) Demirkol, Ziya; Hasirci, Ugur; Demirci, RecepElectric motors that convert electrical energy into motion are one of the basic components of automation systems. In these systems, either linear or circular motion is needed. Linear motion can be obtained either from motors that generate circular motion with the help of ancillary equipment or directly by the means of a linear motor. Obtaining linear motion from motors that produce rotary motion leads to additional costs and reduced efficiency. Linear motors, on the other hand, eliminate the need for conversion mechanisms. Despite this advantage, linear motors have some disadvantages, such as length limitation and low force/current ratio. In this study, a novel Cylindrical Direct Current Linear Motor (CDCLM) with high force/current ratio and no length limitation (long stroke) has been developed. Analyses of the developed motor has been performed with an analytical method. In addition, detailed numerical analyses have been carried out in an Ansys-Maxwell environment. A prototype of the designed DC linear motor has been implemented in a laboratory environment and experimental analyses have been carried out. The results of analytical, numerical and experimental analyses have been compared.Öğe The Experimental Test Results of a Two-Section Linear Induction Launcher(Ieee-Inst Electrical Electronics Engineers Inc, 2020) Tunceroglu, Cagdas; Hasirci, Ugur; Maden, Dincer; Balikci, AbdulkadirA linear induction launcher (LIL) is an air-cored coilgun. Its barrel consists of an array of cylindrical drive coils and the barrel can be a single section or divided into several sections. A single-section barrel can be easily driven by energizing the coils in a polyphase fashion to accelerate the moving part of the LIL, the projectile. A multisection barrel, on the other hand, offers higher muzzle velocities for the projectile. From breech to muzzle, each section is energized with an increasing frequency. However, several problems arise when a multisection barrel is used. Some of them are currently reported in the literature. For example, a retarding force on the projectile has been observed while the projectile passes from one section to another. The initial position of the projectile also affects the launching performance. Some experiments can be useful to determine the optimum conditions to reach maximum possible muzzle velocity. This article concerns the design, implementation, and experimental test of a laboratory-scale, two-section LIL to examine the effects of various parameters on the launching performance.