检索结果-内蒙古大学图书馆

Design of NC Shoe-last carving machine's HSC tool system

学校读者我要写书评

暂无评论

Design of NC Shoe-last carving machine's HSC tool system

International Conference on Consumer Electronics, Communications and Networks

作者： Zhuoda Jiang Yuntang Hu School of Mechatronics Engineering and Automation Shanghai University Shanghai China Key Laboratory of Numerical Control of Jiangxi Province Jiujiang University Jiangxi China

High Speed Cutting (HSC) is an advanced manufacturing process technology which develops rapidly in recent years. It is also an important orientation in machining technology. It has made significant economic benefits in aviation, aerospace, automotive, mold, high-speed locomotives and other industry applications. Therefore, far-reaching significance will be achieved in improving the level of processing technology. Shoe-last is the basis of shoe making. In NC conventional machining, the speed and the accuracy have mutual affects on each other, while HSC can solve these problems. HSC Tool System is the key part of NC Shoe-last Carving Machine and its design will influence the precision and surface quality of Shoe-last.

关键词： Finite element methods Blades Wheels Machining Materials Analytical models Vibrations

Measurement-Based control for Minimizing Energy Functions in Quantum Systems

学校读者我要写书评

暂无评论

arXiv 2023年

作者： Clausen, Henrik Glavind Rahman, Salahuddin Abdul Karabacak, Özkan Wisniewski, Rafal Section for Automation and Control Department of Electronic Systems Aalborg University Aalborg Denmark Department of Mechatronics Engineering Kadir Has University Istanbul Turkey

In variational quantum algorithms (VQAs), the most common objective is to find the minimum energy eigenstate of a given energy Hamiltonian. In this paper, we consider the general problem of finding a sufficient control Hamiltonian structure that, under a given feedback control law, ensures convergence to the minimum energy eigenstate of a given energy function. By including quantum non-demolition (QND) measurements in the loop, convergence to a pure state can be ensured from an arbitrary mixed initial state. Based on existing results on strict control Lyapunov functions, we formulate a semidefinite optimization problem, whose solution defines a non-unique control Hamiltonian, which is sufficient to ensure almost sure convergence to the minimum energy eigenstate under the given feedback law and the action of QND measurements. A numerical example is provided to showcase the proposed methodology. © 2023, CC BY-NC-ND.

关键词： Hamiltonians

Weighted Feedback-Based Quantum Algorithm for Excited States Calculation

学校读者我要写书评

暂无评论

Weighted Feedback-Based Quantum Algorithm for Excited States...

Quantum Computing and engineering (QCE), IEEE International Conference on

作者： Salahuddin Abdul Rahman Özkan Karabacak Rafal Wisniewski Department of Electronic Systems Section of Automation and Control Aalborg University Aalborg Denmark Department of Mechatronics Engineering Kadir Has University Istanbul Turkey

ISBN: (数字)9798331541378

ISBN: (纸本)9798331541385

Drawing inspiration from the Lyapunov control technique for quantum systems, feedback-based quantum al-gorithms have been proposed for calculating the ground states of Hamiltonians. In this work, we consider extending these algorithms to tackle calculating excited states. Inspired by the weighted subspace-search variational quantum eigensolver al-gorithm, we propose a novel weighted feedback-based quantum algorithm for excited state calculation. We show that depending on how we design the weights and the feedback law, we can prepare the pth excited state or lowest energy states up to the pth excited state. Through an application in quantum chemistry, we show the effectiveness of the proposed algorithm, evaluating its efficacy via numerical simulations.

关键词： Quantum system Quantum algorithm Quantum chemistry Stationary state Numerical simulation Energy states

Feedback-Based Quantum Algorithm for Excited States Calculation

学校读者我要写书评

暂无评论

arXiv 2024年

作者： Rahman, Salahuddin Abdul Karabacak, Özkan Wisniewski, Rafal Automation and Control section Department of electronic systems Aalborg University Aalborg Denmark Department of Mechatronics Engineering Kadir Has University Istanbul Turkey

Recently, feedback-based quantum algorithms have been introduced to calculate the ground states of Hamiltonians, inspired by quantum Lyapunov control theory. This paper aims to generalize these algorithms to the problem of calculating an eigenstate of a given Hamiltonian, assuming that the lower energy eigenstates are known. To this aim, we propose a new design methodology that combines the layer-wise construction of the quantum circuit in feedback-based quantum algorithms with a new feedback law based on a new Lyapunov function to assign the quantum circuit parameters. We present two approaches for evaluating the circuit parameters: one based on the expectation and overlap estimation of the terms in the feedback law and another based on the gradient of the Lyapunov function. We demonstrate the algorithm through an illustrative example and through an application in quantum chemistry. To assess its performance, we conduct numerical simulations and execution on IBM’s superconducting quantum computer. © 2024, CC BY.

关键词： Lyapunov functions

Feedback-Based Quantum Algorithm for Constrained Optimization Problems

学校读者我要写书评

暂无评论

arXiv 2024年

The feedback-based algorithm for quantum optimization (FALQON) has recently been proposed to find ground states of Hamiltonians and solve quadratic unconstrained binary optimization problems. This paper efficiently generalizes FALQON to tackle quadratic constrained binary optimization (QCBO) problems. For this purpose, we introduce a new operator that encodes the problem's solution as its ground state. Using control theory, we design a quantum control system such that the state converges to the ground state of this operator. When applied to the QCBO problem, we show that our proposed algorithm saves computational resources by reducing the depth of the quantum circuit and can perform better than FALQON. The effectiveness of our proposed algorithm is further illustrated through numerical simulations. © 2024, CC BY.

关键词： Constrained optimization

Parameter identification of a linear permanent magnet motor using particle swarm optimization

学校读者我要写书评

暂无评论

Parameter identification of a linear permanent magnet motor ...

7th Annual International Conference on Electrical engineering/Electronics, Computer, Telecommunications and Information Technology, ECTI-CON 2010

作者： Therdbankerd, Tithiwat Sanposh, Peerayot Chayopitak, Nattapon Fujita, Hideaki Department of Electrical Engineering Intelligent Mechatronics Automation Robotics and Control Laboratory Kasetsart University 50 Phahonyothin Rd. Ladyao Jatujak Bangkok 10903 Thailand Industrial Control and Automation Laboratory National Electronics and Computer Technology Center 112 Thailand Science Park Phahonyothin Rd. Klong 1 Klong Luang Pathumthani 12120 Thailand Department of Electrical and Electronic Engineering Tokyo Institute of Technology S3-18 2-12-1 Ookayama Meguro-ku Tokyo 152-8550 Japan

ISBN: (纸本)9789746724913

Accurate and effective parameter identification is an important engineering task in high performance control system design. One emerging approach to effectively identify such nonlinear or dynamic unknown parameters is to use Particle Swarm Optimization (PSO) algorithm. Linear Permanent Magnet (LPM) motor is a high performance actuator employed in many applications that require direct linear motion without mechanical transmission for high acceleration and accurate positioning. Therefore, accurate motor parameters are necessary to effectively control the LPM motors. This paper proposes a simple PSO based method with chirp inputs to identify the LPM motor's parameters. The simulations and experiments are conducted to verify the results and determine the effectiveness of the proposed method.

关键词： Parameter estimation

Weighted Feedback-Based Quantum Algorithm for Excited States Calculation

学校读者我要写书评

暂无评论

arXiv 2024年

作者： Rahman, Salahuddin Abdul Karabacak, Özkan Wisniewski, Rafal Section of Automation and Control Department of Electronic Systems Aalborg University Aalborg Denmark Department of Mechatronics Engineering Kadir Has University Istanbul Turkey

Drawing inspiration from the Lyapunov control technique for quantum systems, feedback-based quantum algorithms have been proposed for calculating the ground states of Hamiltonians. In this work, we consider extending these algorithms to tackle calculating excited states. Inspired by the weighted subspace-search variational quantum eigensolver algorithm, we propose a novel weighted feedback-based quantum algorithm for excited state calculation. We show that depending on how we design the weights and the feedback law, we can prepare the pth excited state or lowest energy states up to the pth excited state. Through an application in quantum chemistry, we show the effectiveness of the proposed algorithm, evaluating its efficacy via numerical simulations. © 2024, CC BY.

关键词： Hamiltonians

Study of doubly fed induction generator for wind power application

学校读者我要写书评

暂无评论

Study of doubly fed induction generator for wind power appli...

International Conference on Clean Electrical Power (ICCEP)

作者： P. Stumpf I. Nagy Department of Mechatronics Optics and Engineering Informatics MTA-BME Control Engineering Research Group Budapest University of Technology and Economics Hungary MTA-BME Control Engineering Research Group Department of Automation and Applied Informatics Budapest University of Technology and Economics Hungary

The paper is concerned with the control of doubly fed induction generator applied in wind power technology. Assuming stator flux oriented vector control, the torque and power relations are derived. Using the relations, the slip versus torque and slip versus stator reactive power characteristics are drafted in subsynchronous and in supersynchronous state for investigating the control possibilities of the generator side converter supplying the rotor circuit. The effects of the d and q component of the converter output voltage for the torque, power and speed are studies in qualitative and quantitative way. The active and reactive power flows in stator and rotor side are shown.

关键词： Stators Rotors Reactive power Torque Wind power generation Wind speed Induction generators

Production Scheduling Application Software for Small Medium Enterprises

学校读者我要写书评

暂无评论

Production Scheduling Application Software for Small Medium ...

2023 International Conference on System Science and engineering, ICSSE 2023

作者： Le, Xuan-Thuyen Nguyen, The-Anh-Tu Pham, Ngoc-Hieu Tran, Ngoc-Huy VNU-HCM Innovation Fablab Ho Chi Minh City Viet Nam VNU-HCM Faculty of Electrical & Electronics Engineering Department of Control & Automation Ho Chi Minh City Viet Nam Cao Thang Technical College Department of Mechatronics Ho Chi Minh City Viet Nam

ISBN: (纸本)9798350322941

Derived from the current implementation of the production plan as well as the production schedule, Enterprise Resource Planning software with a built-in production scheduling algorithm helps optimize the uses of resources, reduce production time, increase productivity, and increase customer service levels. In this research, the available management platform (Odoo) with Python as the main programming language is proposed to build a system to support suitable schedule production plans helps shorten processing time and reduce order delay. In addition, the results are shown in detail and can be flexibly modified manually on the Gantt chart. The feasibility of the production scheduling application is shown by the Gantt chart before and after the scheduling. Moreover, the order delay rate has been reduced from 15% to 3.33%. © 2023 IEEE.

关键词： Production control