Discrete Time Sliding Mode Control Strategies Applied To A Multiphase Brushless Dc Machine
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Author | : Godoi Dias, Milena Sabrina |
Publisher | : kassel university press GmbH |
Total Pages | : 196 |
Release | : 2017 |
Genre | : |
ISBN | : 3737603189 |
Download Discrete time sliding mode control strategies applied to a multiphase brushless DC machine Book in PDF, Epub and Kindle
Nowadays, environmental issues motivates the replacement of mechanical, hydraulic and pneumatic system by electrical system in the transport sector aiming to reduce emissions generated by burning of fossil fuels in vehicles. The electrical system must ensure high electrical efficiency and should not exceed the weight of the substituted components. To attend these high performance requirements a fault-tolerant multiphase brushless DC machine was chosen for this research. The present work introduces a six-phase 600W brushless DC machine with 8 poles. The main challenge for the control issues of this machine is the mutual magnetic coupling between the phases due to the wave winding machine configuration. In this context, theoretical and practical investigations of different current control strategies based on the sliding mode control approach applied to the six-phase brushless DC machine are presented.
Author | : Zainah Md Zain |
Publisher | : Springer Nature |
Total Pages | : 1239 |
Release | : 2020-07-07 |
Genre | : Technology & Engineering |
ISBN | : 9811552819 |
Download Proceedings of the 11th National Technical Seminar on Unmanned System Technology 2019 Book in PDF, Epub and Kindle
This book includes research papers from the 11th National Technical Symposium on Unmanned System Technology. Covering a number of topics, including intelligent robotics, novel sensor technology, control algorithms, acoustics signal processing, imaging techniques, biomimetic robots, green energy sources, and underwater communication backbones and protocols, it will appeal to researchers developing marine technology solutions and policy-makers interested in technologies to facilitate the exploration of coastal and oceanic regions.
Author | : Christian Felgemacher |
Publisher | : kassel university press GmbH |
Total Pages | : 186 |
Release | : 2018-03-23 |
Genre | : |
ISBN | : 3737604940 |
Download Investigation of Reliability Aspects of Power Semiconductors in Photovoltaic Central Inverters for Sunbelt Regions Book in PDF, Epub and Kindle
High reliability and system lifetimes in the range of 30 years are essential for renewable energy systems such as photovoltaic power plants to minimise costs for the generated electric energy. At the same time such systems are used in regions with high solar irradiance and also harsh environmental conditions. Therefore, designs for photovoltaic inverters need to meet not only the key design criteria of high conversion efficiency but also need to be very robust and at the same time meet challenging cost targets. In this dissertation aspects concerning the lifetime and reliability of power semiconductors in photovoltaic central inverters are investigated. On key topic of the dissertation is the measurement of the voltage dependent failure rate due to cosmic radiation induced single-event-burnout of SiC and Si power semiconductors. The second topic is the development of a system level simulation to quantify the stress on the power semiconductors in a PV central inverters in various regions of the world. Further topics are the investigation of improved control concepts for the cooling system of PV central inverters and the monitoring of IGBT temperatures during converter operation.
Author | : Ahmadreza Argha |
Publisher | : CRC Press |
Total Pages | : 228 |
Release | : 2018-06-14 |
Genre | : Technology & Engineering |
ISBN | : 1351470485 |
Download Advances in Discrete-Time Sliding Mode Control Book in PDF, Epub and Kindle
The focus of this book is on the design of a specific control strategy using digital computers. This control strategy referred to as Sliding Mode Control (SMC), has its roots in (continuous-time) relay control. This book aims to explain recent investigations' output in the field of discrete-time sliding mode control (DSMC). The book starts by explaining a new robust LMI-based (state-feedback and observer-based output-feedback) DSMC including a new scheme for sparsely distributed control. It includes a novel event-driven control mechanism, called actuator-based event-driven scheme, using a synchronized-rate biofeedback system for heart rate regulation during cycle-ergometer. Key Features: Focuses on LMI-based SMC (sliding mode control) for uncertain discrete-time system using novel nonlinear components in the control law Makes reader understand the techniques of designing a discrete controller based on the flexible sliding functions Proposes new algorithms for sparsifying control and observer network through multi-objective optimization frameworks Discusses a framework for the design of SMC for two-dimensional systems along with analyzing the controllability of two-dimensional systems Discusses novel schemes for sparsifying the control network
Author | : Vadim Utkin |
Publisher | : CRC Press |
Total Pages | : 342 |
Release | : 1999-04-22 |
Genre | : Technology & Engineering |
ISBN | : 9780748401161 |
Download Sliding Mode Control in Electro-mechanical Systems Book in PDF, Epub and Kindle
Sliding Mode Control (SMC) is gaining increasing importance as a universal design tool for the robust control of linear and nonlinear systems. The strengths of sliding mode controllers result from the ease and flexibility of the methodology for their design and implementation. They provide inherent order reduction, direct incorporation of robustness against system uncertainties and disturbances, and an implicit stability proof. They also allow for the design of high performance control systems at low costs. SMC is particularly useful for electro-mechanical systems because of its discontinuous structure. In fact, since the hardware of many electro-mechanical systems (such as electric motors) prescribes discontinuous inputs, SMC has become the natural choice for direct implementation. The book is intended primarily for engineers and establishes an interdisciplinary bridge between control science, electrical and mechanical engineering.
Author | : B. Bandyopadhyay |
Publisher | : Springer Science & Business Media |
Total Pages | : 174 |
Release | : 2005-10-17 |
Genre | : Technology & Engineering |
ISBN | : 9783540281405 |
Download Discrete-time Sliding Mode Control Book in PDF, Epub and Kindle
Sliding mode control is a simple and yet robust control technique, where the system states are made to confine to a selected subset. With the increasing use of computers and discrete-time samplers in controller implementation in the recent past, discrete-time systems and computer based control have become important topics. This monograph presents an output feedback sliding mode control philosophy which can be applied to almost all controllable and observable systems, while at the same time being simple enough as not to tax the computer too much. It is shown that the solution can be found in the synergy of the multirate output sampling concept and the concept of discrete-time sliding mode control.
Author | : B. Bandyopadhyay |
Publisher | : Springer |
Total Pages | : 150 |
Release | : 2009-09-02 |
Genre | : Technology & Engineering |
ISBN | : 9783540813873 |
Download Discrete-time Sliding Mode Control Book in PDF, Epub and Kindle
Sliding mode control is a simple and yet robust control technique, where the system states are made to confine to a selected subset. With the increasing use of computers and discrete-time samplers in controller implementation in the recent past, discrete-time systems and computer based control have become important topics. This monograph presents an output feedback sliding mode control philosophy which can be applied to almost all controllable and observable systems, while at the same time being simple enough as not to tax the computer too much. It is shown that the solution can be found in the synergy of the multirate output sampling concept and the concept of discrete-time sliding mode control.
Author | : Dipesh H. Shah |
Publisher | : Springer |
Total Pages | : 176 |
Release | : 2018-03-16 |
Genre | : Technology & Engineering |
ISBN | : 9811075360 |
Download Discrete-Time Sliding Mode Control for Networked Control System Book in PDF, Epub and Kindle
This book presents novel algorithms for designing Discrete-Time Sliding Mode Controllers (DSMCs) for Networked Control Systems (NCSs) with both types of fractional delays namely deterministic delay and random delay along with different packet loss conditions such as single packet loss and multiple packet loss that occur within the sampling period. Firstly, the switching type and non-switching type algorithms developed for the deterministic type fractional delay where the delay is compensated using Thiran’s approximation technique. A modified discrete-time sliding surface is proposed to derive the discrete-time sliding mode control algorithms. The algorithm is further extended for the random fractional delay with single packet loss and multiple packet loss situations. The random fractional delay is modelled using Poisson’s distribution function and packet loss is modelled by means of Bernoulli’s function. The condition for closed loop stability in all above situations are derived using the Lyapunov function. Lastly, the efficacy of the proposed DSMC algorithms are demonstrated by extensive simulations and also experimentally validated on a servo system.
Author | : Axaykumar Mehta |
Publisher | : Springer |
Total Pages | : 108 |
Release | : 2015-01-05 |
Genre | : Technology & Engineering |
ISBN | : 8132222385 |
Download Frequency-Shaped and Observer-Based Discrete-time Sliding Mode Control Book in PDF, Epub and Kindle
It is well established that the sliding mode control strategy provides an effective and robust method of controlling the deterministic system due to its well-known invariance property to a class of bounded disturbance and parameter variations. Advances in microcomputer technologies have made digital control increasingly popular among the researchers worldwide. And that led to the study of discrete-time sliding mode control design and its implementation. This brief presents, a method for multi-rate frequency shaped sliding mode controller design based on switching and non-switching type of reaching law. In this approach, the frequency dependent compensator dynamics are introduced through a frequency-shaped sliding surface by assigning frequency dependent weighing matrices in a linear quadratic regulator (LQR) design procedure. In this way, the undesired high frequency dynamics or certain frequency disturbance can be eliminated. The states are implicitly obtained by measuring the output at a faster rate than the control. It is also known that the vibration control of smart structure is a challenging problem as it has several vibratory modes. So, the frequency shaping approach is used to suppress the frequency dynamics excited during sliding mode in smart structure. The frequency content of the optimal sliding mode is shaped by using a frequency dependent compensator, such that a higher gain can be obtained at the resonance frequencies. The brief discusses the design methods of the controllers based on the proposed approach for the vibration suppression of the intelligent structure. The brief also presents a design of discrete-time reduced order observer using the duality to discrete-time sliding surface design. First, the duality between the coefficients of the discrete-time reduced order observer and the sliding surface design is established and then, the design method for the observer using Riccati equation is explained. Using the proposed method, the observer for the Power System Stabilizer (PSS) for Single Machine Infinite Bus (SMIB) system is designed and the simulation is carried out using the observed states. The discrete-time sliding mode controller based on the proposed reduced order observer design method is also obtained for a laboratory experimental servo system and verified with the experimental results.
Author | : Yaser Anagreh |
Publisher | : |
Total Pages | : |
Release | : 1998 |
Genre | : Electric motors, Brushless |
ISBN | : |
Download Real-time Sliding Mode Control of a Brushless DC Motor Book in PDF, Epub and Kindle