Control theory

This paper introduces a practical and simple power control method for wind energy conversion systems based on a doubly-fed induction generator. Due to the limitations of traditional proportional-integral controllers when the parameters of the doubly-fed induction generator and wind speed vary, fuzzy control theory is applied to overcome these challenges.

16p visarada 28-04-2025 0 0   Download

Mathematical model of reaction systems contains experimental parameters such as reaction enthalpies, which may be inaccurate and, therefore, severely affect the computation as well as the implementation of feedback control laws. This paper aims to design an adaptive PI-like controller to regulate a chemical reaction system by means of the Lyapunov theory.

11p viinuzuka 28-02-2025 3 1   Download

Simplified analysis of rolling load: Rolling variables • Problems and defects in rolled products • Rolling-mill control • Theories of cold rolling • Theories of hot rolling

79p minggiao93 02-12-2013 102 5   Download

The Z transformation has many applications in Mathematics, especially in solving difference equations to help handle discrete data models. This article provides one more application of the Z transformation, which is the summation of a series.

6p viprimi 16-12-2024 1 1   Download

Lecture "Radio Communication Circuits: Chapter 5&6" presents the following contents: RF Filters, Oscillators and Frequency Synthesizers (RF Oscilators, Voltage-Controlled Oscillators (VCO); Phase-Locked Loops (PLLs) and Applications). Invite you to consult.

65p doinhugiobay_12 15-01-2016 44 4   Download

Agenda: Positive feedback oscillator concepts, negative resistance oscillator concepts (typically employed for RF oscillator), equivalence between positive feedback and negative resistance oscillator theory, oscillator start-up requirement and transient, oscillator design - Making an amplifier circuit unstable, constant |Γ1| circle, fixed frequency oscillator design, voltage-controlled oscillator design.

49p bko123 19-02-2017 59 3   Download

In this thesis, the limitations of using existing LTE congestion mitigation mechanisms such as Discard Timer and RED have been explored. A different mechanism to analyse the effects of using control theory for congestion mitigation has been developed. Finally, congestion mitigation in LTE networks has been addresses using radio resource allocation techniques with non-cooperative game theory being an underlying mathematical framework.

118p runthenight04 02-02-2023 9 2   Download

The aim of this study is to investigate the nature, extent and determinants of risk information disclosed, using the context of corporate reporting in Malaysia. Key management personnel and controlling shareholders are chosen as the two types of players expected to influence corporate risk disclosure decisions. In terms of key management personnel, this study draws on upper echelons theory to develop hypotheses about the effects of demographic and other background influences of the Chief Executive Officer (CEO) and Chair of Audit Committee (CAC) on corporate risk disclosure.

289p runthenight04 02-02-2023 15 2   Download

The current research is undertaken by performing Computational Fluid Dynamics (CFD) simulations for a 2D aerofoil fitted with a shock control bump at a transonic flow condition. Reynolds-Averaged Navier-Stokes equation coupled with turbulence models is adopted to solve the flowfield. The bump has a conventional geometric feature which consists of a ramp, a crest and a tail, and it has eight variants for which the designed parameters are reasonably specified according to the compressible aerodynamics theory.

84p runthenight04 02-02-2023 12 3   Download

The thesis proposes solutions and recommendations to improve the management of public assets at higher education institutions under the Ministry of National Defense, which have a scientific basis in theory and practice, is feasible, and is suitable for the public. suitable with the current actual situations and the reform process of public asset management in Vietnam.

32p unforgottennight08 06-10-2022 25 4   Download

The simulation results demonstrate the possibilistic particle forward-backward smoothing performs well and improves bearings-only tracking performance. Furthermore, possiblistic smoothing also demonstrates better performance than probabilistic smoothing in model-mismatched case.

78p gaocaolon12 13-06-2021 24 4   Download

Research aims: The research aims at researching and developing theoretical and practical basis for control theory-based teaching. On that basis, the research builds up the process of control theory-based teaching and apply it to teaching PLC modules for engineering majored college students.

27p thebadguys 08-06-2021 48 4   Download

The objectives of the thesis are to study on a method to analyze a large-scale system into a number of relatively independent subsystems (interconnected subsystems). Then, the dissertation will focus on designing a decentralized control method for the large-scale system which has been decomposed into the interconnected subsystems.

28p capheviahe27 23-02-2021 46 4   Download

The thesis is based on the application of the fundamental theory of financial risks, the thesis aims at analyzing financial risks in telecommunications businesses. From there, it implies appropriate policies to control the financial risks of enterprises in order to prevent and minimize financial risks, improve the quality of financial management and business efficiency.

0p cothumenhmong6 17-07-2020 48 1   Download

Chapter 4 - Automatic control. Chương này gồm có những nội dung chính sau: What automatic control is, automatic control theory, process control, stability, controllers: pid controllers, optimal control, adaptive control.

17p tieu_vu16 03-01-2019 35 4   Download

Research objectives: Studying and evaluation of active queue management mechanisms to find out the advantages and disadvantages of each mechanism, in order to classify and evaluate application performance for mechanisms and using fuzzy logic to improve active queue management mechanism; the results of the first goals is to perform study motivation first and will be the foundation for the theory and simulation improvements of the thesis.

31p change03 06-05-2016 60 4   Download

Document "8-bit ARM Microcontrollers" give you the knowledge AVR452 Sensor-based Control of Three Phase Brushless DC Motors Using AT90CAN128/64/32: Theory of Operation, Operation of Fundamental BLDC Motor, Implementation, Hall sensor based control of BLDC motor,...

10p nguyenthai_thinh 13-01-2016 48 1   Download

Bài giảng "Hệ thống thông tin công nghiệp - Chương 4: Automatic Control" cung cấp cho sinh viên các kiến thức: hat Automatic Control is, Automatic Control Theory, Process Control, Controllers. Hi vọng đây sẽ là một tài liệu tham khảo hữu ích dành cho các bạn sinh viên công nghệ thông tin và những ai quan tâm dùng làm tài liệu học tập và nghiên cứu.

17p nhasinhaoanh_09 13-10-2015 63 8   Download

The classical metabolic control theory [Kacser, H. & Burns, J.A. (1973)Symp.Soc.Exp.Biol. 27, 65–104; Heinrich, R. & Rapoport, T. (1974)Eur. J. Biochem.42, 89–95.] does not take into account experimental evidence for correlations between enzyme concentrations in the cell. We investigated the implications of two causes of linear correlations: competition between enzymes, which is a mere physical adaptation of the cell to the limitation of resources and space, and regulatory correlations, which result from the existence of regulatory networks....

17p awards 05-04-2013 52 3   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Explaining the effects of an intervention designed to promote evidence-based diabetes care: a theory-based process evaluation of a pragmatic cluster randomised controlled trial

11p panasonic03 17-12-2011 60 3   Download