During the E-learning Distance Interactive Practical Education project, 13 partners from 11 European countries joined together to build a power engineering and motion control remote laboratory, which offers 18 complete online courses with remote experiments and high-quality documentation. This paper outlines the project’s goals, organization, and, as an example, realization of mechatronics motion control course, which explains the most important aspects of motion control design, from modeling, simulations, control design, experimental validation, and comparison between various controllers.
COBISS.SI-ID: 14387222
The new method to improve frequency pullability uses inductance to compensate for quartz stray capacitances. By modifying its equivalent circuit with load inductance and series tuning capacitance, magnetic sensing of the circuit can be highly improved. The experimental results show that the new approach using the quartz crystal stray capacitance compensation method, increases the frequency pulling range (from @ 2 kHz/mH to @ 600 kHz/mH) by ×300 depending on the type of oscillator.
COBISS.SI-ID: 14072598
The paper presents the effective time-delay compensation method based on the concept of network and communication disturbance observer for bilateral teleoperation systems under time-varying delay. The proposed method works without time-delay models that is necessary in the application of Smith predictor. Thus, the method is expected to be widely applied to network based control systems, in which time delay is usually unknown and time varying. The validity of the proposed method is verified by experimental results and compared with Smith predictor.
COBISS.SI-ID: 13876246
Hardware development made data-driven modeling technologies and algorithms popular again. Based on process history data, a precise model can be obtained for various control and fault detection tasks, despite the close-loop effect. The paper presents development of nonlinear principal component analysis method achieved by auto-associative artificial neural network structure, where parameters of the AANN are designed by Taguchi design of experiments approach. Improved fault detection scheme, by using nonlinear model more efficiently, detects faults and possible process deviations.
COBISS.SI-ID: 13441302
Difference of conventional and event driven current control of AC motor is described. We compare the use of three and two voltage vectors in discrete-event current control. Assessment of usability of different procedures is showed considering waviness of output current and number of overlaps. Methods are tested on an experimental model with FPGA. FPGA allows an event drive that is independent from clock. The paper presents new embedded switching control properties of FPGA-based techniques. Simple implementation makes concept of switching control very attractive in power electronic systems.
COBISS.SI-ID: 14355734