|
|
Sensitivity analysis of different forms of state observers
Kadlec, Milan ; Findura, Milan (referee) ; Vavřín, Petr (advisor)
This master thesis is focused on the sensitivity analysis of selected kinds of state reconstructors. They are realized in a general form, via direct and parallel programing. Quantity that determines the quality of sensitivity is output signal difference of the reconstructor with the general form of the system. Testing will be based on different initial state conditions and on the parameters change of the feedback A matrix due to the rested reconstructors.
|
|
|
Algorithms of Electrical Drives State Estimation
Herman, Ivo ; Vavřín, Petr (referee) ; Václavek, Pavel (advisor)
This thesis deals with state estimation methods for AC drives sensorless control and with possibilities of the estimation. Conditions for observability for a synchronous drive were derived, as well as conditions for the moment of inertia and the load torque observability for both drive types - synchronous and asynchronous. The possibilities of the estimation were confirmed by experimental results. The covariance matrices for all filters were found using an EM algorithm. Both drives were also identified. The algoritms used for state estimation are Extended Kalman Filter, Unscented Kalman Filter, Particle Filters and Moving Horizon Estimator.
|
|
|
Electrical Drives Predictive Control Algorithms
Mynář, Zbyněk ; Vavřín, Petr (referee) ; Václavek, Pavel (advisor)
This work deals with the predictive control algorithms of the AC drives. The introductory section contains summary of current state of theory and further description and classification of most significant predictive algorithms. A separate chapter is dedicated to linear model predictive control (linear MPC). The main contribution of this work is the introduction of two new predictive control algorithm for PMSM motor, both of which are based on linear MPC. The first of these algorithms has been created with the aim of minimizing its computational demands, while the second algorithm introduces the ability of field weakening. Both new algorithms and linear MPC were simulated in MATLAB-Simulink.
|
|
|
Hybrid dynamic systems- analysis and modeling
Holub, Libor ; Findura, Milan (referee) ; Vavřín, Petr (advisor)
In this thesis the issue with the description, modeling and analysis of hybrid dynamic systems is solved. The main goal is to select appropriate method for solving hybrid dynamic systems and to aim to question on solving controllability, observability and stability of these systems. Two types of hybrid systems are covered in this work. In the first part, the description and simulation of hybrid systems that are compiled of continous and discrete parts with the systems of discrete affair are specified. For the description and modeling of hybrid automata and hybrid Petri nets have been used. The possibilities mentioned above are showned on the simple examples. Second part of this work covers the description, modeling and analysis of hybrid systems that are compiled of links continous and discreate dynamic system. The state space has been used. The universal state equations are mentioned and have been used for the description of the hybrid system and the structure of the matrixes A, B, C, D. The relation and basic method are spin off for the analysis of hybrid dynamic systems. From the analysis point of view, these are general methods for the controllability, observability, stability and steady state of hybrid dynamic systems. The examples of hybrid control systems for mentioned methods are specified. If it is allowed, the results are verified by the simulation in MATLAB Simulink background.
|
|
| |
|
|
Control of non-stable Systems
Heczko, Lukáš ; Findura, Milan (referee) ; Vavřín, Petr (advisor)
This master´s thesis deals with control of unstable processes with two unstable complex poles using algebraic control with emphasis in value of the controller output. Thesis consists of theoretical introduction, including initial conditions with analysis of basic approaches to the control design with one or two degrees of freedom regulators by solving polynomial equations. Constrained control is studied more detailed. Optimization problem of „lowest fuel consumption“ is used for design of controller and is used for both degrees of freedom regulators with additional condition of zero variance control. Thesis includes some examples of control design by described method. Small library of MatLab functions were developed also to make the design more easier. Conclusions are made at the end and achieved goals are reviewed.
|
|
|
Design of MIMO controler
Nevídal, Pavel ; Findura, Milan (referee) ; Vavřín, Petr (advisor)
Objective of the bachelor thesis is to acquaint readers with issue of multiple input and output regulation systems and show one of available methods of controller design for these systems. Thesis is separated into two chapters. In the first part there are explained basic terms from issue multiple input and output regulation systems and deduced matrices of transfers of control and breakdown. Second more extensive part attends to design of matrices of discrete controllers PSD. The meaning of requests for control (autonomicity and static invariantness) and deduced conditionals which follows on these requests is explained here. The quality of regulation via transient characteristics is demonstrated at the end.
|
|
| |
|
| |
|
| |
guest ::
RSS feed.