Yazar "Erismis, M. A." seçeneğine göre listele

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    Design and modeling of a new robust multi-mass coupled-resonator family with dynamic motion amplification
    (Springer Heidelberg, 2013) Erismis, M. A.
    This paper presents a new family of multi-mass coupled resonators that can provide robust operation and dynamic motion amplification at the same time. The basic resonator block consists of three masses coupled to each other, where the first mass is the driver unit, the second mass transfers the dynamic energy and the third mass is the final oscillating mass. This basic block can be further enhanced to a more-than-three-mass system to create a multi-mass system to improve the amplification. In order to analyze this multi-mass system, a generic analytical model is derived which is valid for a finite number of masses. This analytical model is verified for the three mass system using FEM simulations. A detailed modeling of a sample three-mass micro-resonator is provided demonstrating the robust operation and the mechanical amplification. Finally, a five-mass system is proposed to improve the mechanical amplification.
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    A micromechanical analogue mixer with dynamic displacement amplification
    (Taylor & Francis Ltd, 2018) Erismis, M. A.
    A new micromechanical device is proposed which is capable of modulation, demodulation and filtering operations. The device uses a patented 3-mass coupled micromechanical resonator which dynamically amplifies the displacement within a frequency range of interest. Modulation can be obtained by exciting different masses of the resonator with the data and the carrier signals. Demodulation can be obtained similarly by exciting the actuator with the input and carrier signals at the same time. With the help of dynamic motion amplification, filtering and signal amplification can be achieved simultaneously. A generic design approach is introduced which can be applied from kHz to MHz regime frequencies of interest. A sample mixer design for an silicon on insulator-based process is provided. A SPICE (Simulation Program with Integrated Circuit Emphasis)-based electro-mechanical co-simulation platform is also developed and the proposed mixer is simulated.
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    A new capacitive rotary encoder based on analog synchronous demodulation
    (Springer, 2018) Karali, M.; Karasahin, A. T.; Keles, O.; Kocak, M.; Erismis, M. A.
    Rotary encoders, which are mainly used to feedback the angle of the robot arm to the robot controller system, are widely used in industrial and robotic applications. While optical and magnetic rotary encoders are dominant in the market, capacitive rotary encoders are also gaining interest for their simple design, ability to miniaturize and being absolute encoders insensitive to magnetic field variations. In this study, a new economical capacitive rotary encoder based on analog synchronous demodulation is developed. Analog synchronous demodulation technique is used for the first time in the literature as far as known to the authors for capacitive rotary encoders. It is chosen as it is quite robust, simple and economical. A compact mechanical body is developed by 3D printing. After packaging, the sensor is fixed to a motor for testing. The developed encoder shows 2880 pulse/rotation resolution and repeatable output under different temperature environments.