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Paper describes the creation of mathematical model for active damped mechanical structure. The model is consisting of differential equations for structure's motion and an equation of the control loop. This model is used to design and examination the control loop algorithm and for testing the behaviour of the whole system before applying it on the real structure.
The paper compares a traditional two-degree-of-freedom PI controller (2DOF PI) with a disturbance observer based filtered PI control (DO FPI) with scalable filtering properties. Analytical tuning of both control loops is based on specifying position of their double real dominant poles. As in the papers [1], [2], a core structure of a filtered P controller (with adjustable filtering properties) is...
Proposed paper contains an appropriate opportunities how to get information about availability of Free Space Optic (FSO) systems. The FSO systems use infrared beams to transmit data via atmosphere. Transmission channel is unstable and unpredictable, so monitoring of environment is needed. Atmosphere phenomena decrease optical signal in different ways such as absorption, scattering and scintillation...
The article deals with the problem of optimal routing for unmanned aerial vehicles. The unmanned aerial vehicle flights are planned for different purposes. In our article we deal with the situation when the unmanned aerial vehicle flights are planned to search for objects located in some predefined areas. These objects can represent, for example, a lost aircraft or a group of missing people. In the...
The article deals with the web service, which is proposed to support specific thermochemical calculations. Creation of mathematical models and their use in process control of the raw materials processing requires extensive support of thermochemical calculations. In the beginning of the article is introduced analysis of the current state of software tools as a support for thermochemical calculation...
The effect of parametric vibration damping is theoretically well described and the first experiments are published. The paper focuses on the design and verification of the system functionality which is based on the use of piezoactuators as an element of the controlled stiffness which varies periodically in time according to a sinusoidal function. The principle of governing the piezoactuator stiffness...
This contribution is focused on designing a laboratory stand for the testing purpose of the ABS unit. The ABS unit was designed based on a model, which represents roadway by a wheel braked with a mechanical disc brake in the minimal skid. An algorithm was designed and tested during breaking with mechanical brake identifying skid and creating intervention on the brake. A visualization application for...
The aim of the research work was to present some possibilities of control and optimization of the technological process of aluminum anodic oxidation using neural networks and Design of Experiments (DoE) in order to evaluate and monitor the influence of the input factors on the resulting AAO (Anodic aluminum oxide) film thickness. Three types of neural units (first order neural unit, second order neural...
The paper compares three on-line identification methods with forgetting of unnecessary data: regularized exponential forgetting (REF), regularized exponential forgetting with alternative covariance matrix (REFACM) and the newly created hybrid regularized exponential forgetting with alternative covariance matrix (HREFACM), which is composed of the first two and uses their benefits. Their quality and...
The paper analyzes data measured by monitoring equipment prototype designed for measuring mine gas properties. The data covers measurements obtained during the first months after deployment of the monitoring equipment. The system measures CH4, CO2 and O2 concentrations, and also the speed and volume of the exhausted mine gas. The analysis of the measured data focuses on finding dependencies between...
Possibility to use the Takagi-Sugeno fuzzy model to design suitable controllers for heat exchanger control was studied. The controlled process was a shell-and-tube heat exchanger and its Takagi-Sugeno fuzzy model was obtained using experimental data. The control objective was to keep the output temperature of the heated stream at a reference value. The controlled output is the output temperature of...
This document is devoted to system identification and using process control for controlling revolutions of pneumatic rotational engine. In this article identifying measurements results are stated and the quality of control process is compared in relation to speed and regulation accuracy.
Control is used in everyday practice to facilitate and enhance our activity. We are therefore always interested also achieved the result of control, which assesses the various criteria of quality control. High attention is paid to the actual regulators and their parameters. In the control must be closed control loop and his feedback may have to control result a similar impact as the controller itself...
Paper addresses the problem of designing stable output feedback model predictive control for linear SISO (frequency domain) and MIMO (time domain) systems with input constraints. In the proposed control scheme the required on-line computation loads are significantly less then those in the MPC references.
The paper shortly describes a simple controller tuning method for plants with time delay - the desired model method. On the basis of the argument principle it is shown analytically that behaviour of the control system tuned by the desired model method is determined by the pair of dominant poles.
There are discussed various approaches to the evaluation of variables whose values are for any reason impossible to be measured directly. For moisture evaluation of combusted fuel, several formula were previously proposed. In the investigations reported in the paper they have been examined which of them is the most suitable for the moisture inference gained in small-scale biomass fired boilers. In...
This paper deals with an adaptive fuzzy mechanism for heating control in smart houses. A fuzzy approach is connected with an expert system and considers various input data which can enter the system. The proposed adaptive mechanism adjusts the thermal comfort rate based on the input data and IF-THEN rules. The knowledge base of the expert system is created based on input data and it is possible to...
The paper presents results computer simulations conducted for a semi-active vibration reduction system in an object with one degree of freedom. The system consists of a linear magnetorheological (MR) damper connected with an electromechanical transducer (EM) and a spring. This system is an alternative to a typical semi-active MR damper-based vibration reduction system supplied by an external power...
This work deals with the structure and laboratory tests results conducted for two electromechanical energy transducers. The devices are supposed to work as a power supply for a magnetorheological (MR) rotary damper. The results from the laboratory tests will be the basis to prepare a control algorithm for the rotary MR damper, with the use of the electrical energy retrieved from the mechanical energy...
The paper describes research concerned with generating and planning trajectory for the 5 DoF automated serial link CNC machine designed for industrial manipulation tasks with axially symmetrical workpiece. To generate the trajectory, the path based on several measurement points was interpolated by use of the 2D spline interpolation algorithm, the output of which is projected on the workpiece surface...
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