Melih Çakmakci

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Increased availability of low-cost electronics has created a new breed of control system components; so called ”smart” components, which can perform control responsibilities in the actuator and sensor components as well as in the controller. ”Smart” components can communicate bi-directionally in networked control systems. We identify opportunities for(More)
In this paper, a controller featuring cross-coupled control and iterative learning control schemes is designed and implemented on a modular two-axis positioning system in order to improve both contour and tracking accuracy. Instead of using the standard contour estimation technique proposed with the variable gain cross-coupled control, a computationally(More)
Increased availability of electronics at much lower costs have helped to create a new breed of control system components; so called “smart” components, which can perform control responsibilities in the actuator and sensor components as well as in the controller. “Smart” components can communicate bi-directionally in networked control systems. Our results(More)
In the early days of computer control, only one centralized computer was responsible for executing the algorithms. Increasingly, computer control algorithms reside inside individual system components in a distributed fashion. Variable camshaft timing (VCT) is an appealing feature for automotive engines because it allows optimization of the cam timing over a(More)
This paper presents a new method to increase the available measurement resolution of quadrature encoder signals. The proposed method features an adaptive signal correction phase and an interpolation phase. Typical imperfections in the encoder signals including amplitude difference, mean offsets and quadrature phase shift errors are corrected using recursive(More)
This paper presents a new method to increase the measurement resolution of quadrature encoders. The method contains an adaptive signal correction step and a signal interpolation step. Measured encoder signals contain imperfections including amplitude differences, mean offsets, and quadrature phase shift errors. With the proposed method, these errors are(More)
Increasing demand for micro/nano-technology related equipment resulted in growing interest for precision positioning systems. In this paper a modular controller combining cross-coupled control and iterative learning control approaches to improve contour and tracking accuracy at the same time is presented. Instead of using the standard error estimation(More)
CONCURRENT DESIGN OF ENERGY MANAGEMENT AND VEHICLE STABILITY CONTROL ALGORITHMS FOR A PARALLEL HYBRID VEHICLE USING DYNAMIC PROGRAMMING Halil İbrahim Dokuyucu M.S. in Mechanical Engineering Supervisor: Asst. Prof. Melih Çakmakcı August, 2012 Concurrent design of controllers for a vehicle equipped with a parallel hybrid powertrain is studied. Our work(More)