Bertalan Beszédes

The paper presents a trajectory control method for nonlinear differentially flat control systems, referred to as the generalized Computed Torque Control (CTC) method. It is shown that the classical Computed Torque Control, traditionally applied to serial manipulators, can be regarded as a special case of a general trajectory control method for a specific class of flat systems, denoted as class A systems. An approach to the linearization of such systems is proposed, based on class C coordinate transformations, which transform the original nonlinear control system into an equivalent trivial linear control system while preserving equivalence in the sense of control system theory. It is noted that class C transformations admit hardware implementation using physically realizable signal-processing elements. It is shown that flat systems of class A possess a flat output depending only on the current state of the system, which extends the applicability of the proposed method to other nonlinear control objects, including certain types of mobile robots. In addition, the analysis of the classical CTC method makes it possible to formulate a disturbance rejection criterion for the linear controller included in the trajectory control scheme.

This paper presents a practical model predictive control (MPC) framework for Hammerstein-type fuel metering systems affected by static nonlinearities, inversion uncertainty, and delayed noisy measurements.The proposed approach combines static nonlinear compensation, linear MPC, and disturbance-aware state estimation to achieve accurate real-time fuel flow control with low computational complexity.The controller is experimentally validated on an electrically actuated turbojet fuel metering system.Experimental results demonstrate fast, offset-free tracking, effective constraint handling, and robust performance despite model mismatch and measurement uncertainty.The proposed method consistently outperforms a baseline Fuzzy PID controller in rise time and tracking error metrics across both fuel-pump stand and engine-in-the-loop experiments, demonstrating its practical applicability and robustness in real-world conditions.

In this paper, the design and development of a low-cost single-axis solar tracking charge controller will be presented, aimed at maximizing the efficiency of photovoltaic systems, with the current boundary conditions. The design emphasizes affordability, using readily available and cost-effective components without significantly compromising performance. A microcontroller-based control system is employed to drive the tracking mechanism, ensuring precise and responsive adjustments. Key components of the system, including the design considerations, control algorithms, and hardware implementation, are discussed in detail. Further goal of the study is to show a well usable demonstration device for engineering educational purposes.

The aim of my project is to offer an automation solution for examining solid-state passive detectors frequently used in particle physics. Since the detector surface often exceeds the field of view of microscopes, the implementation of a two-dimensional mobile platform is necessary. Additionally, processing the captured images provides information on the incident particle energy, direction and mass. Automation accelerates the examination process and reduces the human factor inherent in the analysis.

The aim of this paper is to present the operation, construction, design and scientific background of a Nixie tube display, microcontroller and BCD decoder controlled RTC clock with RTC interface. The paper describes the control of old TTL devices with today's modern microcontrollers, and discusses the discharge phenomena of tubes filled with a gas mixture and the control principles of this type of display tube. The analogue circuits required for operation are also described, as well as the reception and synchronisation of the atomic clock signal.

This article describes the most important aspects of the design, manufacture and operation of microcontroller-controlled spot welding machines, with a particular focus on the application and benefits of recyclable components. The study presents the electrical and mechanical parameters of the equipment, as well as the operation of the electrical control electronics and regulators, as well as the process of regulation.

This paper explains the basic methods of troubleshooting, maintenance and diagnostic of pneumatic and electro-pneumatic systems in the case of a flipper machine as an artificial industrial environment for educational purposes. The article deals with operation and servicing of industrial electro-pneumatic equipment and control systems, and shows methods how to avoid common mistakes and inefficiencies. In addition to the historical overview and practical application, hardware and software design procedures are also presented.