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    Study on Rotor Position Detection of Motor Based on Resolver
    Micromotors.servo Technique (2008)
    Liyi Li
    High-performance velocity regulation system of the motor depends on the position detection signal.With the resolver,high-precision absolute position signal can be measured.The working principal of the resolver is introduced,the hardware and software design schemes of the system are proposed.The selection of the AU6802N1 which is the digital transforming chip of the resolver and its parameters are mainly introduced.The design of peripheral circuit,the detective circuit and the DSP interface circuit are introduced.The experiment indicates that the system is suitable,and the digital position detection circuit composed with the resolver and AU6802N1 is feasible.
    Resolver
    Position (finance)
    SIGNAL (programming language)
    Interface (matter)
    Position sensor
    Citations (3)
    DSP-based 3D printed resolver-to-digital conversion system
    Chung‐Chuan HouHan‐Wei Lin
    This study compares a 3D printed resolver with a conventional resolver. The advantages of the 3D printed resolver are cheap, easy manufacture and modification. The equivalent circuit, transfer function, and Bode diagram of the resolver are presented and discussed. Furthermore, a digital signal processor (DSP)-based resolver-to-digital conversion system for 3D printed resolver and conventional resolver is built to validate the performances of the proposed scheme.
    Resolver
    Citations (2)
    Design of digital resolver based on ATmega16
    Modern Electronics Technique (2013)
    Tian Li-chao
    In order to simulate the signal of a rotating transformer(″resolver″ for short),the circuit of a digital resistance resolver is designed based on AVR MCU ATmega16 and AD5293.The AD5293 is initialized and configured through the communication of SPI bus with MCU.The digital resolver can output sine signal and cosine signal produced by the resolver and can replace the real resolver for the purpose of testing the decoding and resolving circuit.The experiment shows that the design scheme is suitable for the simulation of the resolver.
    Resolver
    SIGNAL (programming language)
    Citations (0)
    Experimental verification of the resolver dynamic model and control designs
    Chung‐Chuan HouYing‐Hsuan ChiangChi‐Pong Lo
    Resolver is an absolute angle measurement and is mounted on the motor shaft to get the motor's absolute angular position. This study proposes an equivalent circuit of the resolver. The transfer function of the resolver is proposed. Furthermore, the frequency response of the resolver is measured by a dynamic signal analyzer to obtain the adequate frequency of resolver's reference signal. Test results are presented to validate the performances of the resolver.
    Resolver
    SIGNAL (programming language)
    Position (finance)
    Citations (9)
    A low cost resolver-to-digital converter
    C. AttaianeseG. TomassoD. De Bonis
    In this paper, the full implementation on a combined analog-digital board of the resolver-to-digital conversion is proposed. It represents a low cost solution for measuring the position by means of standard resolvers. Some experimental results are presented and a comparison with the performances achieved by means of an incremental encoder is performed.
    Resolver
    Rotary encoder
    Position (finance)
    Citations (22)
    An investigation on the position errors of resolvers designed in different structures: A review
    Measurement (2023)
    Reşat ÇelikelGüllü BoztaşÖmür Aydoğmuş
    Resolver
    Rotary encoder
    Magnetic reluctance
    Position sensor
    Position (finance)
    Citations (3)
    Position Measurement in Industrial Drives by Means of Low-Cost Resolver-to-Digital Converter
    IEEE Transactions on Instrumentation and Measurement (2007)
    C. AttaianeseG. Tomasso
    A fully integrated board for resolver-to-digital conversion is proposed in this paper. It is based on a combined analog/digital circuit, which allows one to track the shaft angle of a standard resolver in a digital form. Furthermore, the board also provides the feeding signal for the resolver-rotor circuit. All the tuning and configuration settings, which allow one to adapt different kind of resolvers to the proposed system, can be easily implemented directly on the board. The final assembly is a compact low-cost resolver-to-digital converter. The entire board design and implementation are described in this paper. In addition, several tests at different resolver speeds have been performed for validation.
    Resolver
    SIGNAL (programming language)
    Position (finance)
    Citations (96)
    Influence of mechanical faults on the position error of an axial flux brushless resolver without rotor windings
    IET Electric Power Applications (2017)
    Zahra Nasiri‐GheidariF. Tootoonchian
    The axial flux brushless resolver without rotor windings is newly proposed resolver that has the advantages of variable reluctance (VR) resolvers for having no winding on rotor and also, its manufacturing process is much simpler than that of VR resolvers. The influence of different mechanical faults on the position error of the studied resolver is discussed. Different types of eccentricities, inclined rotor and run out error independently and simultaneously are studied using 3D time stepping finite‐element method. The results show the maximum position error is related to the resolver under static eccentricity (SE), so an optimised rotor is proposed for the studied resolver to overcome this challenge. Finally, the optimised resolver is built and the experimental tests are done to validate the simulation results.
    Resolver
    Position (finance)
    Citations (18)
    Proposal of a New Affordable 2-Pole Resolver and Comparing Its Performance With Conventional Wound-Rotor and VR Resolvers
    IEEE Sensors Journal (2018)
    F. Tootoonchian
    In this paper, a new affordable 2-pole resolver is proposed. Since, the commercial 2-pole resolvers are wound rotor (WR) types, at first the performance of a WR resolver is analyzed and shown that despite high accuracy of the sensor, it has a complex structure. The common solution for reducing the complexity of the WR resolvers is using variable reluctance (VR) resolvers. So, the performance of three VR resolvers is discussed. The results show not only the accuracy of the VR resolvers in 2-pole applications is not acceptable but also their accuracy is influenced by imperfection in production and installation. So, a new structure is proposed. The stator of the proposed resolver is exactly the same as WR resolver. While, the complexity of the rotor significantly reduced, even in comparison with VR resolvers. The flux path and the operating principle of the proposed resolver are discussed based on magnetic equivalent circuit. Then, the performance of the proposed resolver is evaluated and compared with traditional resolvers using the 3-D times stepping finite element method. The average of absolute position error and the total harmonic distortion of the voltages' envelope for the proposed resolver are calculated equal to 0.47° and 1.31%. While those values for the WR resolver are 0.15° and 0.34%, respectively, and 0.48° and 1.31% for the most accurate VR resolver. Finally, the prototype of the proposed resolver is built and tested. Close correlation between the simulation and experimental results validates the success of the design.
    Resolver
    Magnetic reluctance
    Citations (35)
    Presentation of a Novel Variable Reluctance Tubular Resolver
    IEEE Transactions on Industrial Electronics (2022)
    Fateme ZareAli KeyvanniaZahra Nasiri‐Gheidari
    Encoders and resolvers are the most common position sensors in controlling electrical machines. However, due to their ability to work under harsh conditions, resolvers are more preferred. In linear position detection, the transversal edge effects and the longitudinal end-effects adversely affect the accuracy of conventional linear resolvers. On the contrary, due to the cylindrical symmetry of tubular machines, they are not subject to the edge effects. With this idea, this article presents a novel linear VR resolver with a tubular structure to achieve higher accuracy than the existing linear resolvers. A magnetic equivalent circuit model is then developed to prove the correct performance of the proposed resolver. It is discussed that the proposed resolver is tolerant of mechanical eccentricities. Different configurations are studied, and finite-element analysis is conducted to analyze the resolver's outputs considering longitudinal end-effects and under mechanical eccentricities. The results show the proposed configuration has a robust performance under eccentricities while its accuracy sharply deteriorates due to the longitudinal end effect. Therefore, an effective method is proposed for compensating the longitudinal end effect. Finally, the compensated resolver is experimentally built and tested to verify the success of the developed sensor.
    Resolver
    Magnetic reluctance
    Position (finance)
    Citations (12)