Journal articles: 'Positional electric drive'

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Dotsenko, Vladimir, Roman Prokudin, and Alexander Litvinenko. "Optimal Control of the Positional Electric Drive and Its Implementation." Machines 9, no. 4 (March 24, 2021): 70. http://dx.doi.org/10.3390/machines9040070.

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The article deals with the optimal control of the positional electric drive of the stator element of a segment-type wind turbine. The calculation options charts current in the assumption of the minimum energy consumption and the implementation of line chart current using the phenomenon of capacitor discharge. The analysis of the implementation is expressed in a jump-like change in current and a triangular graph of the speed change. This article deals with small capacity synchronous wind turbine generators with a segment type stator. These units have the possibility of intentionally changing the air gap between the rotor and stator. This allows: (1) Reduce the starting torque on the rotor shaft, which will allow the rotor to pick up at low wind speeds. (2) Equivalent to change of air gap in this case is change of excitation of synchronous generators. Thus, the purpose of the article is to consider a method of excitation of generators in a segmented design, by controlling the gap with the electric drive, while providing control should be carried out with minimal losses.

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Slobodzyan, N. S. "Positional control of a parallel kinematics mechatronic manipulator linear drive." Issues of radio electronics 49, no. 9 (October 28, 2020): 6–13. http://dx.doi.org/10.21778/2218-5453-2020-9-6-13.

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The research is part of the current work on the design and research of precision actuators with parallel kinematics, designed to guide and orient of various objects. To protect the sensitive load and the supporting platform from undesirable disturbances above the permissible ones, as well as to limit the time of transient processes and the consumed power, a method for planning the trajectory of the linear actuator stem when operating in positional mode is proposed. The article describes an algorithm for calculating the parameters of the trajectory of an object under specified restrictions on speed, acceleration and acceleration derivative, and also proposes an algorithm for implementing control along a planned trajectory for a modern microprocessor system, which implements the dependence of speed on movement. The advantage of the proposed control method is the elimination of the cumulative effect of the static displacement error while observing dynamic constraints, as well as the possibility of using algorithms in both closed-loop and open-loop drives based on various types of electric motors. The article presents the results of computer simulation of an open-loop drive operating according to the proposed algorithm, the advantages and disadvantages of this approach are noted.

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Denisov, V. A., and R. R. Madyshev. "Simulation and Investigation of the Positional System of an Electric Drive with Nonlinear Correction." Russian Electrical Engineering 89, no. 3 (March 2018): 210–14. http://dx.doi.org/10.3103/s1068371218030069.

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Buharov, K., N. Grishin, M. Kudrov, L. Rybak, and V. Cherkasov. "KINEMATICS ANALYSIS OF A 6-DOF ROBOTIC MOBILITY PLATFORM FOR TEST BENCHES AND SIMULATORS." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 7, no. 5 (May 11, 2022): 81–90. http://dx.doi.org/10.34031/2071-7318-2022-7-5-81-90.

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The article discusses the main aspects of the application of mathematical modeling methods to analyze the properties of 6-DOF robotic mobility platforms (RMP), which can be used as complete test benches and simulators for testing various equipment, road construction equipment, vehicles, aviation, rocket and space. The application of simulators made it possible to create a virtual environment for user interaction with a special type of equipment that responds to commands like a real one. In addition, the article considers a numerical method for solving the inverse kinematics problem of the RMP, which consists in determining the dependence of the change in the lengths of six drive rods (rectilinear drives) on six coordinates (three translational and three rotational) characterizing the position of the mobile platform in space. The mathematical modeling of the RMP kinematics has been carried out. Data on the required linear and angular position of the mobile platform of the RMP, as well as the position of the rods and the speed of the rods of the drive mechanisms based on electric cylinders are selected as initial data for calculating the RMP control system. As a result of the simulation, a corresponding sample is obtained. The corresponding maximum and minimum values of the samples are obtained. These values correspond to the requirements for the minimum and maximum stroke of the rod of electric drives that drive the RMP. The results of mathematical modeling for a set of positional parameters of the RMP are presented. Numerical simulation of the optimization task is performed for the selected configuration of geometric parameters of the mobile platform of the RMP.

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Kholodilin, I. Yu, A. V. Korzhov, M. A. Grigorev, M. M. Dudkin, Yu I. Khokhlov, and V. A. Kushnarev. "SELECTING POWER ELEMENTS FOR THE ELECTRIC DRIVE OF KHPT-450 PIPES COLD-ROLLING MILL AT PJSC CHTPZ." Bulletin of the South Ural State University series "Power Engineering" 21, no. 4 (2021): 102–9. http://dx.doi.org/10.14529/power210412.

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Standard equipment replacement will not provide for the required accuracy and speed of metallurgical positional drive systems as the requirements are exceeding. The modernization of the electric drive system must be carried out in a complex manner, with sequential partial optimization of the power elements. The paper describes the criteria and methods for selecting power elements. Each process stage was optimized according to the minimum design time criterion. The elements were selected on the basis of empirically obtained data on the technological unit, namely, the KhPT-450 mill at ChTPZ PJSC. It was revealed that changing the gear ratio of the gearbox allows improving the quality of the subordinate regulation system setting, considering the flexibility of the mechanical part of the system. An increase in the ratio of the length of the active part of the rotor to its diameter makes it possible to increase the speed of the system, and, consequently, its ac-curacy. The equipment selection outcomes were tested on a prototype at the Scientific and Technical Center “Privodnaya Tekhnika”. As a result, it was possible to reduce the duration of the technological process nearly by half.

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PROKHORENKO, Andriy, Dmytro SAMOILENKO, Piotr ORLINSKI, Dmytro TALANIN, and Serhii KRAVCHENKO. "The application of isodromic equation for calculation of PID-controller integrated component." Combustion Engines 177, no. 2 (May 1, 2019): 91–94. http://dx.doi.org/10.19206/ce-2019-216.

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A functional feature of the application of electronics used for the automatic control of internal combustion engines is necessity in the proportional conversion of ECU electrical signals into the mechanical processes based on corresponding elements motion. For such conversion of information actuating mechanisms are used, referred as actuators. Actuators in the form of electrical machines (stepper or precision electric motors) or electric apparatuses (electromagnets and solenoids) are the mostly widespread in ICE. As a physical object of the research, the unit of Heinzmann, model StG 6-02V that is based on a DC electric drive controlled by a pulse-width modulation signal, was selected in the current work. It has a toothed gearbox and a non-contact reverse positional connection. This actuator pro-vides an output torque of 6 Nm and 36-degree range of output shaft rotational angle. The functional scheme of the electronic system of automatic control of a diesel engine based on mentioned device is developed. The PID regulator with feedback is used to control the actuator. A design formula that can be incorporated in the controller algorithm to calculate the integral component of the PID regulator was also obtained. Values of empirical coefficients were determined in this formula. The results of experimental confirmation of the correctness of the approach taken are presented. Thus, the new formula for determining the integral component of the PID regulator differs positively from the well-known solutions because the new approach is free from storing the whole array of previous data with discrepancy in the controller’s RAM, that simplifies the application of the developed algorithm greatly and speeds up the computational capability of the controller.

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Ford, Peter J., Ebrahim Amiri, and Ernest Mendrela. "Electric elevator drive with position control." Electrical Engineering 98, no. 3 (May 5, 2016): 307–19. http://dx.doi.org/10.1007/s00202-016-0368-3.

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Lima, Cláudio de Andrade, James Cale, and Kamran Eftekhari Shahroudi. "Rotor Position Synchronization in Central-Converter Multi-Motor Electric Actuation Systems." Energies 14, no. 22 (November 9, 2021): 7485. http://dx.doi.org/10.3390/en14227485.

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The aerospace industry is increasingly transitioning from hydraulic and pneumatic drives to power-electronic based drive systems for reduced weight and maintenance. Electromechanical thrust reverse actuation systems (EM-TRAS) are currently being considered as a replacement for mechanical based TRAS for future aircraft. An EM-TRAS consists of one or more power-electronic drives, electrical motors, and gear-trains that extend/retract mechanical members to produce a drag force that decelerates the aircraft upon landing. The use of a single (“central”) power electronic converter to simultaneously control a set of parallel induction machines is a potentially inexpensive and robust method for implementing EM-TRAS. However, because the electrical motors may experience different shaft torques—arising from differences in wind forces and a flexible nacelle—a method to implement rotor position synchronization in central-converter multi-motor (CCMM) architectures is needed. This paper introduces a novel method for achieving position synchronization within CCMM architecture by using closed-loop feedback of variable stator resistances in parallel induction machines. The feasibility of the method is demonstrated in several case studies using electromagnetic transient simulation on a set of parallel induction machines experiencing different load torque conditions, with the central converter implementing both voltage-based and current-based primary control strategies. The key result of the paper is that the CCMM architecture with proposed feedback control strategy is shown in these case studies to dynamically drive the position synchronization error to zero. The initial findings indicate that the CCMM architecture with induction motors may be a viable option for implementing EM-TRAS in future aircraft.

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Kumar, Ganisetti Vijay, Min-Ze Lu, and Chang-Ming Liaw. "A Highly-efficiency Position Sensorless Electric Vehicle Synchronous Reluctance Motor Drive." Journal of Energy and Power Technology 03, no. 03 (May 2, 2021): 1. http://dx.doi.org/10.21926/jept.2103037.

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The development of high-efficiency motor drives for various applications is important in the industry 4.0 era, especially for their extensive application to electric vehicles (EVs). In this study, a position sensorless EV synchronous reluctance motor (SynRM) drive has been developed, which exhibits good driving performance and efficiency over a wide speed and load range. To solve the key problems popularly encountered in the existing approaches, the high-frequency injection (HFI) scheme based on q-axis injection has been proposed. In addition, the changed-frequency injection has been adopted considering the effects of speed/load dependent slotting ripple current. Robust observed speed and position controllers have been added to enhance the sensorless control performance. For the SynRM basic driving control scheme, robust current control and adaptive commutation with minimized motor losses have been achieved that yield satisfactory driving performance up to the rated speed and load. Good EV driving performance has been demonstrated experimentally, including starting, dynamic, acceleration/deceleration, and reversible operations. In addition, the steady-state characteristics have been assessed, and the high efficiencies have been observed to be comparable to the standard drive.

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Habermehl, Christian, Georg Jacobs, Stephan Neumann, and Kevin Weißenfels. "Influence of Drivetrain Hybridization on Transmission Lifetime." Applied Sciences 10, no. 20 (October 12, 2020): 7086. http://dx.doi.org/10.3390/app10207086.

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Parallel hybrid drivetrains for passenger cars have additional electric drives compared to conventional drivetrains. In the event of vehicle deceleration, the electric drives are operated as generators, thus recovering kinetic energy through regeneration. If these drives are positioned upstream of the transmission input, regeneration power must be transferred by the transmission. This creates additional loads on the individual machine elements, which has a negative effect on the transmission lifetime. This paper investigates the influence of hybridization in terms of regeneration on the lifetime of bearings as highly critical elements in a dual clutch transmission. The vehicle simulation model employed in this study consists of an internal combustion engine, an electric motor, a mechanical drivetrain and the vehicle body, as well as a driver and a simple operating strategy. In this model, a detailed transmission model including its controls is embedded to determine its component loads. The resulting load spectra are used in a methodical approach to calculate the bearing lifetime of the transmission. The results show that the additional regenerative power flow reduces the bearing lifetime so that additional loads must be taken into account in the development and operation of transmission systems.

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Jin, Yong-Sin, Hee-Keun Shin, Hag-Wone Kim, Hyung-Soo Mok, and Kwan-Yuhl Cho. "Position Controller for Clutch Drive System of PHEV(Plug in Hybrid Electric Vehicle)." Transactions of the Korean Institute of Power Electronics 17, no. 2 (April 20, 2012): 166–73. http://dx.doi.org/10.6113/tkpe.2012.17.2.166.

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Tikhomirova, I. A., L. G. Kopylova, and S. V. Tararykin. "Adaptive selective-invariant control of tracking electric drives with elastic kinematic transmissions." Vestnik IGEU, no. 4 (August 31, 2021): 57–64. http://dx.doi.org/10.17588/2072-2672.2021.4.057-064.

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Currently, high quality indicators of adaptive versions of selective-invariant electromechanical systems designed to control the speed in a wide range have been obtained. Thus, it lays the groundwork for effective use of the proposed synthesis methods and obtained structural solutions in the systems of contour-positional and tracking control of angular displacements of the working elements of technological machines. The implemented structural-parametric synthesis is based on the methods of the theory of modal control, reduction of regulators, the principles of selective invariance, separation of the rates of movement of local subsystems, adaptive, contour-positional and tracking control. The study has been carried out by detailed computational experiments with models of synthesized electromechanical systems. The features of synthesis and functioning of adaptive selective-invariant systems with elastic kinematic links in the tracking and positioning modes are described. The combination of the principles of tracking, selective-invariant and adaptive control in the structure of a single electromechanical system makes it possible to fully provide new opportunities for the implementation of high-precision dynamic control of working machines.

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Malek, Michal. "Forced dynamic position control of PMSM with DTC utilization." Journal of Electrical Engineering 63, no. 5 (November 1, 2012): 328–32. http://dx.doi.org/10.2478/v10187-012-0048-0.

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Almost one and a half century after the publication of Maxwell’s On Governors, feedback theory with PID controllers in cascade structure is still an essential part of control structures of most controlled electric drives. There are a few control strategies which are “ready” to replace it but they usually miss one of the essential fundamentals of every successful approach - simplicity hand in hand with lucidity. But there is one close relative which is simple and powerful at the same time, is not excessively abstract and without complicated mathematics. The name of this technique is Forced Dynamic Control. In this paper forced dynamic control is presented together with direct torque controlled PMSM drive as unique combination of simple algorithms for inner and outer loop of cascade structure.

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Iwakane, Takanobu, and Tadaaki Yamasaki. "High precision position detecting for direct-drive using electric resolver." IEEJ Transactions on Industry Applications 109, no. 1 (1989): 57–63. http://dx.doi.org/10.1541/ieejias.109.57.

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Плахотникова, Е., and E. Plakhotnikova. "CLASSIFICATION OF “ELE CTRIC DRIVE – STOP VALVE” SYSTEMS FROM POSITION OF ENERGY SOURCE USED FOR “OPEN-CLOSED” CYCLE CARRYING OUT." Bulletin of Bryansk state technical university 2016, no. 1 (March 31, 2016): 74–79. http://dx.doi.org/10.12737/18263.

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The common purpose of investigation – development of theory and methods of open-closed” systems design. The investigation problems: development of criteria for the functional compatibility of an electric drive and stop valve within the limits of a system, the classification of “electric drive –stop valve” systems from the position of energy sources used, that allows increasing a technical effectiveness, competitiveness of domestic produce and defining the ways for the realization of the priority trend of the RF in the field of import substitution. The paper is a generalization of theoretical and practical investigations of the author directed to the development of a complex approach to the design of “electric drive – stop drive” systems. The paper reposts theoretical prerequisites for the introduction of a new scientific classification of “electric drive-stop valve” systems from the position of energy types used for the realization of the “open-closed” working cycle. Basic classification variants of systems, signs of transition of one system into other, system properties within the limits of the classification offered are shown.

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Datlinger, Christoph, and Mario Hirz. "Benchmark of Rotor Position Sensor Technologies for Application in Automotive Electric Drive Trains." Electronics 9, no. 7 (June 28, 2020): 1063. http://dx.doi.org/10.3390/electronics9071063.

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Rotor shaft position sensors are required to ensure the efficient and reliable control of Permanent Magnet Synchronous Machines (PMSM), which are often applied as traction motors in electrified automotive powertrains. In general, various sensor principles are available, e.g., resolvers and inductive- or magnetoresistive sensors. Each technology is characterized by strengths and weaknesses in terms of measurement accuracy, space demands, disturbing factors and costs, etc. Since the most frequently applied technology, the resolver, shows some weaknesses and is relatively costly, alternative technologies have been introduced during the past years. This paper investigates state-of-the-art position sensor technologies and compares their potentials for use in PMSM in automotive powertrain systems. The corresponding evaluation criteria are defined according to the typical requirements of automotive electric powertrains, and include the provided sensor accuracy under the influence of mechanical tolerances and deviations, integration size, and different electrical- and signal processing-related parameters. The study presents a mapping of the potentials of different rotor position sensor technologies with the target to support the selection of suitable sensor technologies for specified powertrain control applications, addressing both system design and components development.

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Chiriac, Rareș-Lucian, Anghel Chiru, Răzvan Gabriel Boboc, and Ulf Kurella. "Advanced Engine Technologies for Turbochargers Solutions." Applied Sciences 11, no. 21 (October 27, 2021): 10075. http://dx.doi.org/10.3390/app112110075.

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Research in the process of internal combustion engines shows that their efficiency can be increased through several technical and functional solutions. One of these is turbocharging. For certain engine operating modes, the available energy of the turbine can also be used to drive an electricity generator. The purpose of this paper is to highlight the possibilities and limitations of this solution. For this purpose, several investigations were carried out in the virtual environment with the AMESim program, as well as experimental research on a diesel engine for automobiles and on a stand for testing turbochargers (Turbo Test Pro produced by CIMAT). The article also includes a comparative study between the power and torque of the naturally aspirated internal combustion engine and equipped with a hybrid turbocharger. The results showed that the turbocharger has a very high operating potential and can be coupled with a generator without decreasing the efficiency of the turbocharger or the internal combustion engine. The main result was the generation of electrical power of 115 W at a turbocharger shaft speed of 140,000–160,000 rpm with an electric generator shaft speed of 14,000–16,000 rpm. There are many constructive solutions for electrical turbochargers with the generator positioned between the compressor and the turbine wheel. This paper is presenting a solution of a hybrid turbocharger with the generator positioned and coupled with the compressor wheel on the exterior side.

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FURUYA, SHIN-ICHI, YASUYUKI OHKURA, TORU MARUHASHI, and MUTSUO NAKAOKA. "A NOVEL INVERTER-DRIVE ULTRASONIC MOTOR-ACTUATED POSITIONING SERVO MOTION SYSTEM USING A FUZZY REASONING CONTROL SCHEME." Journal of Circuits, Systems and Computers 04, no. 04 (December 1994): 395–414. http://dx.doi.org/10.1142/s0218126694000235.

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This paper presents the operating principle of the ultrasonic motor (USM) as a new actuator and its steady-state characteristics for application-specific servo motion systems. The latest developed inverter-drive traveling wave type ultrasonic motor (TUSM) is suitable for direct-drive motion systems. We describe a positioning servo motion system using the TUSM, which operates under a feasible fuzzy-reasoning controller with velocity and positional state-variable feedback schemes. Experimental verifications are given and their results are evaluated using a one-axis servo motion drive system. It is also proved that a new compact direct-drive servo motion system using inverter-fed USM which incorporates a microprocessor-based two-input and one-output fuzzy-reasoning controller is more acceptable for a specific direct-drive application.

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Kulkarni, A. S., and M. A. El-Sharkawi. "Intelligent Precision Position Control of Elastic Drive Systems." IEEE Power Engineering Review 21, no. 4 (April 2001): 69. http://dx.doi.org/10.1109/mper.2001.4311320.

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Nazarova, Elena S., Vladimir V. Osadchii, and Sergej Ju Tobolkin. "INVESTIGATION OF POSITION ELECTRIC DRIVE BASED ON STEPPER MOTOR IN MICROSTEPPING MODE." ELECTRICAL AND COMPUTER SYSTEMS 19, no. 95 (July 2, 2015): 24–27. http://dx.doi.org/10.15276/eltecs.19.95.2015.06.

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Higgins, R. A., M. Moulton, S. L. Blodgett, T. J. Gibb, and P. Neumann-Dye. "Efficacy of Insecticides Against First Generation European Corn Borer Larvae, 1985." Insecticide and Acaricide Tests 11, no. 1 (January 1, 1986): 231–32. http://dx.doi.org/10.1093/iat/11.1.231.

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Abstract Naturally infested mid-to-late whorl stage yellow field corn was treated on 14 Jun ‘85. Eighteen insecticides and 2 untreated control plots were arranged in a randomized complete block design with 4 replications. All plots were composed of 4 adjacent rows, each 12 m long with 76-cm between-row spacing. Sprays w ere applied in water (20 gpa) with a carbon dioxide-powered backpack sprayer. The boom was equipped with 80 degree hollow cone tips positioned to deliver spray simultaneously through 8 nozzles across 4 rows (2 per row positioned 45 degrees from the vertical). Granular products were applied with custom-modified electric drive Nobel applicators. Band spreaders were positioned approximately 5 cm above the whorl proper and distributed products over a 20-cm band width.

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Atherton, E. J. "Positional and rotational control using flexible drives." Sensor Review 7, no. 3 (March 1987): 147–48. http://dx.doi.org/10.1108/eb007727.

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ZELENCHENKO, Alexey P., Anton A. BOGDAN, and Murodilla Sh SHADMONKHODZHAEV. "Power supply for a CIP position for bearings." Proceedings of Petersburg Transport University 2021, no. 4 (December 2021): 554–60. http://dx.doi.org/10.20295/1815-588x-2021-4-554-560.

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Objective: Two possible options for power sources are considered: a controlled three-phase bridge rectifi er circuit with a step-down transformer and a pulse converter receiving power from the network through an uncontrolled three-phase bridge rectifi er to drive the wheel-motor units of electric locomotives and electric trains into rotation with the required frequency at the position of CIP bearing diagnostics. In both cases, it is assumed that the power supplies receive electricity from the 380/220 V, 50 Hz network. The power source is loaded with traction motors of the ER2R, ER2T, ET2, ET2M electric trains and the VL-10 electric locomotive. Methods: Mathematical modeling is used in the MatLab/Simulink environment for analytical calculations. Results: The currents and voltages of the load were determined, based on the calculations, the control angles and power factors of the rectifi er with a step-down transformer, the duty cycle of the pulse converter. Practical importance: A variant of an energy-effi cient power supply is proposed, including an uncontrolled rectifi er and a pulse converter.

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Veselov, O. V., V. A. Nemontov, A. A. Kobzev, and Yu E. Mishulin. "A system for measuring rotor angular position, velocity, and position for an �PB-2 electric drive." Measurement Techniques 36, no. 5 (May 1993): 551–53. http://dx.doi.org/10.1007/bf00988489.

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Higgins, R. A., M. Moulton, S. L. Blodgett, T. J. Gibb, and P. Neumann-Dye. "Efficacy of Insecticides Against Second Generation European Corn Borer Larvae, 1985." Insecticide and Acaricide Tests 11, no. 1 (January 1, 1986): 232–33. http://dx.doi.org/10.1093/iat/11.1.232.

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Abstract Naturally infested silking stage yellow field corn was treated twice (19 Jul and 29 Jul ‘85). Eighteen insecticides and 2 untreated plots were arranged in a randomized complete block design with 4 replications. All plots were composed of 4 adjacent rows, each 12 m long with 76 cm between-row spacing. Sprays were applied in water (20 gpa) with a carbon dioxide-powered system mounted above the canopy on a rickshaw-style frame. The boom was equipped with 80 degree hollow cone tips positioned to deliver spray simultaneously through 12 nozzles across 4 rows. For each row, 2 nozzles were positioned on drops and sprayed 45 degrees from the vertical into the ear zone while 1 was positioned to apply spray straight down from above the tassel. Granular products were applied with custom-modified electric drive Noble applicators. Band spreaders were positioned approximately 5 cm above the tassel and distributed products over a 20-cm band width.

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Hiltz, Kenneth S., Jonathan G. Dean, Peter Schwinghamer, and Donald J. Belliveau. "Computer-Driven Motor Control with Positional Memory for Mechanical Microscope Stage." Canadian Journal of Fisheries and Aquatic Sciences 45, no. 9 (September 1, 1988): 1652–56. http://dx.doi.org/10.1139/f88-196.

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A computerized control system for the X–Y mechanical stage of an inverted microscope was constructed using relatively inexpensive electrical components and requiring minimal modification to the stage. The control consists of two linear stepper motors, one for each axis, driven by commands from an IBM-compatible PC via a serial communications port and a simply constructed electrical controller. Menu-driven software regulates the motions of the steppers and allows keyboard input of data on the type and number of particles in settling chambers or on microscope slides. Frame locations of particles are stored automatically to facilitate reexamination of samples. The system allows samples to be removed and replaced while retaining the ability to relocate particles of interest.

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ANDRZEJEWSKI, Andrzej. "Time-Optimal Position Control of DC Motor Servo Drive." PRZEGLĄD ELEKTROTECHNICZNY 1, no. 12 (December 5, 2019): 87–90. http://dx.doi.org/10.15199/48.2019.12.16.

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Liaw, C. M. "Position control with fuzzy adaptation for induction servomotor drive." IEE Proceedings - Electric Power Applications 142, no. 6 (1995): 397. http://dx.doi.org/10.1049/ip-epa:19952209.

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Woo, Jemin, Bongsu Hahn, and Changsun Ahn. "Position Estimator Design for a MEMS Top-Drive Electrostatic Rotary Actuator." Sensors 20, no. 24 (December 10, 2020): 7081. http://dx.doi.org/10.3390/s20247081.

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The capacitance and rotor angle of a MEMS top-drive electrostatic rotary actuator do not have a linear relationship due to the non-ignorable fringe effect and low aspect ratio of the electrodes. Therefore, the position estimation is not as straightforward as that for a comb-drive linear actuator or a side-drive rotary actuator. The reason is that the capacitance is a nonlinear and periodic function of the rotor angle and is affected by the three-phase input voltages. Therefore, it cannot be approximated as a simple two-plate capacitor. Sensing the capacitance between a rotor and a stator is another challenge. The capacitance can be measured in the electrodes (stators), but the electrodes also have to perform actuation, so a method is needed to combine actuation and sensing. In this study, a nonlinear capacitance model was derived as a data-driven model that effectively represents the nonlinear capacitance with sufficient accuracy. To measure the capacitance accurately, the stator parts for actuation and those for sensing are separated. Using the nonlinear model and the capacitance measurement, an unscented Kalman filter was designed to mitigate the large estimation error due to the periodic nonlinearity. The proposed method shows stable and accurate estimation that cannot be achieved with a simple two-plate capacitor model. The proposed approach can be applied to a similar system with highly nonlinear capacitance.

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Tungpimolrut, Kanokvate, Prapon Jitkreeyarn, Seubsuang Kachapornkul, Pakasit Somsiri, and Akira Chiba. "Initial rotor position estimation of a SRM drive installed in an electric vehicle." IEEJ Transactions on Electrical and Electronic Engineering 6, no. 6 (September 22, 2011): 594–600. http://dx.doi.org/10.1002/tee.20700.

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Vittek, Jan, and Branislav Ftorek. "Energy Efficient Speed and Position Control of Electric Drives with Pmsm." Communications - Scientific letters of the University of Zilina 16, no. 1 (February 28, 2014): 64–71. http://dx.doi.org/10.26552/com.c.2014.1.64-71.

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Zhou, Nana, Lingchao Kong, Jie Fan, and Zhenpo Wang. "Model-based Fault Detection of Rotor Position Sensor Fault in Permanent Magnet Synchronous Motor for Electric Vehicle." Journal of Physics: Conference Series 2258, no. 1 (April 1, 2022): 012060. http://dx.doi.org/10.1088/1742-6596/2258/1/012060.

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Abstract Permanent magnet synchronous motors (PMSMs) are widely used in drive system of electric vehicles (EVs) because of their high efficiency, wild torque range, high power density, etc. However, rotor position, as a very critical parameter for its control strategy, often faces inaccuracies in operation. In this paper, the problem of position sensor fault detection in drive system of EV was studied. The mathematical model of EV with a specific drive system was introduced in discrete form and built in Matlab/Simulink. Based on the field oriented control strategy model, a novel fault detection scheme based on the parity space for the drive system was proposed. The proposed method considered the influence of the closed-loop control to the fault detection result. A residual generator and a residual evaluator were included. The simulation results demonstrated the effectiveness and applicability of the proposed method.

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Dohmeki, Hideo. "Improved positional accuracy of microstep drive by five-phase stepping motors." IEEJ Transactions on Industry Applications 110, no. 11 (1990): 1203–4. http://dx.doi.org/10.1541/ieejias.110.1203.

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Datlinger, Christoph, and Mario Hirz. "An Extended Approach for Validation and Optimization of Position Sensor Signal Processing in Electric Drive Trains." Electronics 8, no. 1 (January 10, 2019): 77. http://dx.doi.org/10.3390/electronics8010077.

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Due to the increasing electrification of automotive drive train systems, accurate position and speed sensors play an important role to achieve an optimum drive train performance and driving range. These sensor systems determine the rotor shaft position to deliver exact data for efficient drive train control. The system itself must be reliable, sufficiently accurate and cost efficient at the same time. In this way, the design process of the sensor system is influenced by a trade-off, which influences the system performance in view of different parameters, e.g., resolution and data processing accuracy. The focus of the present work is to introduce a method for benchmarking the performance of not only the rotor shaft position sensor, but the whole electric drive train sensor systems by use of a highly accurate reference system on a specifically developed test bench. To achieve a significant benchmark statement by determination of the rotor position angle error, the independent measuring systems, the automotive drive train system and the reference system are synchronized by the use of a common trigger/clock signal. The mentioned signal defines the time steps of the system under test rotor position angle capturing procedure and those of the reference system simultaneously. This enables a common time-base for two independent working measurement systems. This publication provides information about a concept for enhanced rotor position sensor evaluation that enables the merging of real-time data processing with test bench measurement. This procedure provides an important basis for the selection and optimization of position sensor systems for sophisticated electric powertrains.

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Bai, Su Ping, Hai Yang Jiang, and Zhong Yao Zhu. "Defect and Position Measurement of Pipeline Inner Surface Defects." Key Engineering Materials 552 (May 2013): 475–78. http://dx.doi.org/10.4028/www.scientific.net/kem.552.475.

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The paper aims to measure the exact position while detecting inner surface defects of large scale pipeline. A realizable method using opto-electrical is presented in this paper, which can give the position of opto-electrical sensor. On-line measured data is automatically recorded and processed with precision because of the application of step motor and gear drive, as well as software controlling computer.

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Wolfgram, P. A., R. N. Edwards, L. K. Law, and M. N. Bone. "Polymetallic sulfide exploration on the deep sea floor: The feasibility of the MINI‐MOSES experiment." GEOPHYSICS 51, no. 9 (September 1986): 1808–18. http://dx.doi.org/10.1190/1.1442227.

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The recent discoveries of polymetallic sulfide deposits on the deep sea floor have created an interest in geophysical techniques for mapping them. A magnetometric resistivity method (MINI‐MOSES) has been developed for detecting the distribution of sub‐sea‐floor electrical resistivity. A vertical, long‐wire bipole feeds electric current into the ocean. Some of the current enters the sea floor, and its magnetic field is measured at various distances by a low‐frequency induction coil magnetometer. The method is sensitive to conductive and resistive zones at depth, and information about three‐dimensional resistivity structures can be obtained. The small load resistance of an electric transmitter grounded in the ocean allows high current to be driven by a battery‐powered instrument. The induction coil receiver is more sensitive and less noisy than conventional flux‐gate magnetometers over the selected frequency band. This receiver is therefore well‐adapted to the almost noise‐free deep sea‐floor environment. Both the transmitter and the receiver are completely self‐contained, recording averaged transmitted and received signals in random access memory. The technique was tested near a sulfide deposit at 47° 57′N, 129°06′W on the axis of the Juan de Fuca Ridge. The deep submersible ALVIN positioned and moved the instruments about on the sea floor. Just enough data were obtained to demonstrate the viability of the technique for this kind of geologic mapping and mineral exploration. The electrical resistivity of 14 Ω ⋅ m obtained for a uniform half‐space model is consistent with Deep Sea Drilling Project (DSDP) results for the seawater‐saturated basalt.

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Denisov, А., Y. Denisov, and O. Bursala. "THE STABILIZATION ACCURACY OF THE PHASE POSITION OF THE WORKING BODY OF THE ROBOTICS COMPLEX." Наукові праці Державного науково-дослідного інституту випробувань і сертифікації озброєння та військової техніки, no. 3 (May 28, 2020): 20–28. http://dx.doi.org/10.37701/dndivsovt.3.2020.03.

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To stabilize the phase position of the working body of the robotics complex a single-circuit precision electric drive system was developed based on the principle of phase-locked loop. The direct-driven electric drive is made on the basis of brushless direct current motor, which is switched to synchronous mode with minimal discrepancy between the phases of the reference signals and the pulse speed sensor. The phase error signal is fed to the input of the PID controller, which controls the pulse width modulation of the impulses controlling the operation of the power transistors of the autonomous voltage inverter. In a static mode, the control system of the autonomous voltage inverter implements a sinusoidal law of the pulse width modulation of the output pulses. The PID controller and the control system of the autonomous voltage inverter are programmatically implemented on the basis of the controller. In the process of analysing of the stabilization accuracy, the synchronous motor is represented by a second-order linear link, which establishes a relation between the phase deviations of the motor rotor and the stator magnetic field. The autonomous voltage inverter is represented by a zero-order hold whose coefficient of amplification on amplitude is found by the results of the approximation of its output voltage using the Walsh-Fourier series. The analysis of the phase stabilization process is performed on the basis of the state variables method taking into account the perturbations at the moment of load using the program which implements the recurrent procedure. The settings of the PID controller are determined by the variation results when the moment of load changes. Their initial values are determined as a result of optimizing the system in terms of operation speed considering the condition of finite duration processes. It is assumed that there is no moment of load perturbation. The procedure for setting the PID controller parameters to the optimal operation speed mode can also be performed on the basis of neural networks. As a result of the calculations, it was found that with an increase of the load moment by 5%, the maximum deviation of the rotor phase was 0.22 us and 0.03 us of minimum deviation respectively.

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Cho, Doo-Hyun, Hyo-Chan Kwon, and Kwon-Hee Kim. "Improvement of Position Repeatability of a Linear Stage with Yaw Minimization." Applied Sciences 12, no. 2 (January 10, 2022): 657. http://dx.doi.org/10.3390/app12020657.

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Recently, due to the miniaturization of electronic products, printed circuit boards (PCBs) have also become smaller. This trend has led to the need for high-precision electrical test equipment to check PCBs for disconnections and short circuits. The purpose of this study is to improve the position repeatability of the platform unit up to ±2.5 μm in linear stage type test equipment. For this purpose, the causes of the position errors of the platform unit are analyzed. The platform unit holding the PCB is driven by a single-axis linear ball screw drive system offset from its geometric center due to design constraints. The yaw rotation of the platform is found to have a dominant effect on position repeatability. To address this problem, adding balancing weights to the platform unit and adjusting the stiffness of the LM Guides are proposed. These methods reduce the yaw rotation by moving the centers of mass and stiffness closer to the linear ball screw actuator. In the verification tests, the position repeatability was decreased to less than ±1.0 μm.

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Wang, Yong, Ying Zhang, and Ji Fen Li. "A Design of the Device for Lower Limbs Rehabilitation and Simulation Analysis." Applied Mechanics and Materials 130-134 (October 2011): 438–41. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.438.

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Based on the positional characteristic of ellipticorbit of four-bar linkage, we develop a device to support rehabilitation of a patient’s lower limb’s motion in two-dimensional plane. In addition, we use ADAMS software to analyze two aspects parameters. One aspect is about the horizontal and vertical displacement of four-bar mechanism of ellipticorbit. The other simulation is about angles θ1 (angle between thigh and the horizontal) and θ2 (angle between thigh and calf). Before using the device, we install them in both sides of a normal chair. Driven by electric motor, lower limbs can follow the trajectory to do rehabilitation exercise. Long-term exercise can help a patient to repair damaged muscles.

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Chuyen, Tran Duc, and Nguyen Duc Dien. "Development of a position tracking drive system for controlling PMSM motor using dSPACE 1104-based variable structure." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 3 (September 1, 2021): 1345. http://dx.doi.org/10.11591/ijpeds.v12.i3.pp1345-1357.

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In industrial electric drive systems, it is common to find objects that need to solve the problem of angular position control, moving the object from one position to another asymptotically with no over-correction and guarantee. calculation of maximum fast impact. This is a multi-target optimization problem with many different solutions. This paper presents a method of constructing a PMSM motor position controller with a variable structure using dSPACE 1104 card. The system consists of a position control loop with a variable structure that is an outer loop and a speed control loop degree is the inner loop. In which, the speed adjustment loop uses adaptive law to compensate for uncertain functions and build a sliding mode observation to estimate load torque, friction and noise. The results of the simulation study were verified on Matlab-Simulink environment and experimented on dSPACE 1104 card to check the correctness of the built controller algorithm. The research results in the paper are the basis for the evaluation and setting up of control algorithms, design of electric drive systems in industry and the military.

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41

Susilo, Wilhelmus Hary. "Study on the development the market position company of fully electric vehicles." E3S Web of Conferences 304 (2021): 01005. http://dx.doi.org/10.1051/e3sconf/202130401005.

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Owing on decreased the marketing performances on automotive industries- energy generation, and storage industry in many firms. The research inquired of research gap within pursues the market- positions that it was conduct within resources of the corporate. Therefore, the research method conducted the one step approach within the confirmed strategy that conduct within an equation’s structural hybrid-model. The results- data was significantly contributed to the goal setting theory that it could drive to improve and enhanced within an innovation evidence in the digital-marketing and encompassed the marketing strategies that could pursued the market positions within the firms in the automotive fully electric vehicles industry as firms policies that innovation effort in digital marketing more focused than task marketing strategies and top managers.

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Mizuno, Yasunori, Hideki Muramatsu, Takamitsu Aoki, and Taro Sometani. "Feedback position control apparatus of tokamak plasma horizontal position with a digital drive." Electrical Engineering in Japan 130, no. 4 (March 2000): 26–34. http://dx.doi.org/10.1002/(sici)1520-6416(200003)130:4<26::aid-eej4>3.0.co;2-x.

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43

Morimoto, Shigeo, Shigemasa Nishimura, and Yoji Takeda. "PM Motor Drive System with Low Resolution Position Sensor." IEEJ Transactions on Industry Applications 118, no. 1 (1998): 67–73. http://dx.doi.org/10.1541/ieejias.118.67.

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Qiu, Zizhen, Yong Chen, Xiaozhe Lin, Haiquan Cheng, Yang Kang, and Xu Liu. "Hybrid Carrier Frequency Modulation Based on Rotor Position to Reduce Sideband Vibro-Acoustics in PMSM Used by Electric Vehicles." World Electric Vehicle Journal 12, no. 3 (July 22, 2021): 100. http://dx.doi.org/10.3390/wevj12030100.

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In the permanent magnet synchronous motor (PMSM) drive system, the unwilling and ear-piercing vibro-acoustics caused by high-frequency sideband harmonics becomes unacceptable in electric vehicle applications. In this paper, a modified space vector pulse width modulation (SVPWM) technique implemented with a hybrid carrier frequency modulation (HCFM) is provided to reduce the sideband current harmonic components and vibro-acoustic responses. The principle and implementation of the proposed HCFM technique are firstly presented in which the fixed carrier frequency is improved with the sawtooth and random signal-based coupling modulation based on the rotor position. The analytical derivations with the power spectral density method are also proposed. For verification, the experiment tests are conducted on a prototype 12/10 PMSM and microcontroller unit. The effectiveness of the HCFM technique can hence be confirmed considering the sideband vibro-acoustics reduction operated more effectively than that in a conventional random PWM. The proposed approach may provide a new route in noise-cancelling and electromagnetic compatibility for the electric drive powertrain.

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Jia, Guangzheng, Guangxu Pan, Qian Gao, and Yida Zhang. "Research on position inverse solution of electric-driven Stewart platform based on Simulink." Journal of Engineering 2019, no. 13 (January 1, 2019): 379–83. http://dx.doi.org/10.1049/joe.2018.8986.

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Veselov, O. V., A. V. Eremin, A. O. Veselov, and A. N. Nikashkin. "High-quality microprocessor system for position, velocity, and acceleration measurements of electric drives." Measurement Techniques 42, no. 4 (April 1999): 383–89. http://dx.doi.org/10.1007/bf02504401.

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Wai, R. J., and F. J. Lin. "Fuzzy neural network sliding-mode position controller for induction servo motor drive." IEE Proceedings - Electric Power Applications 146, no. 3 (1999): 297. http://dx.doi.org/10.1049/ip-epa:19990290.

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Liaw, C. M., R. Y. Shue, H. C. Chen, and S. C. Chen. "Development of a linear brushless DC motor drive with robust position control." IEE Proceedings - Electric Power Applications 148, no. 2 (2001): 111. http://dx.doi.org/10.1049/ip-epa:20010261.

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Liu, Shaobo, Qiwei Wang, Guoqiang Zhang, Gaolin Wang, and Dianguo Xu. "Online Temperature Identification Strategy for Position Sensorless PMSM Drives With Position Error Adaptive Compensation." IEEE Transactions on Power Electronics 37, no. 7 (July 2022): 8502–12. http://dx.doi.org/10.1109/tpel.2022.3149804.

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Higgins, R. A., S. Blodgett, T. J. Gibb, and K. Shufran. "Efficacy of Insecticides Against First Generation European Corn Borer Larvae, 1986." Insecticide and Acaricide Tests 12, no. 1 (January 1, 1987): 197. http://dx.doi.org/10.1093/iat/12.1.197a.

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Abstract Naturally infested late whorl stage yellow field corn was treated on 13 Jun. Sixteen insecticides and 2 untreated control plots were arranged in a randomized complete block design with 4 replications. Granular products were applied on 2 row plots and liquid products were applied to 4 row plots all of which were 10 m long with a row width of 91 cm. Sprays were applied in water (20 GPA) using a CO2-powered backpack sprayer. The boom was equipped with 8 nozzles 45° nozzles to spray 4 rows. Granular products were applied with a modified electric drive Noble applicator. Band spreaders were positioned approximately 5 cm above the whorl and distributed products over a 20 cm band.

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Journal articles on the topic 'Positional electric drive'

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