Razvoj krmiljenja elektromagnetnega in hidravlično gnanega sistema za dinamsko testiranje komponent

Tomažin, Rok (author), Čepon, Gregor (mentor), Majdič, Franc (comentor)

V okviru zaključne naloge je razvito in eksperimentalno preverjeno PLC-krmiljenje elektrodinamskega stresalnika in hidravličnega pogona za sinusno dinamsko vzbujanje. Skupna krmilna zasnova združuje generiranje sinusnega signala, predkrmiljenje, določanje amplitude z metodo fazno občutljivega zaznavanja in PI-regulacijo. Pri hidravličnem pogonu je dopolnjena z regulacijo srednje lege cilindra in frekvenčno odvisnim predkrmiljenjem. Delovanje je ovrednoteno s kombiniranimi frekvenčno-amplitudnimi profili, stalnimi delovnimi točkami, različnimi trajanji in smermi profilov ter preverjanjem ponovljivosti. Rezultati kažejo, da skupna programska arhitektura omogoča amplitudno sledenje pri obeh pogonskih principih, vendar zahteva prilagoditev predkrmiljenja in regulatorjev lastnostim posameznega sistema. Elektrodinamski stresalnik je omogočil natančnejše amplitudno sledenje, hidravlični pogon pa je bil izraziteje občutljiv na frekvenco ter hitrost in smer spreminjanja delovne točke.

• Language: Slovenian
• Keywords: PID krmiljenje, elektrodinamski stresalniki, hidravlični pogoni, PLC krmilniki, amplitudna regulacija, fazno občutljivo zaznavanje
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [R. Tomažin]
• Year: 2026
• Number of pages: XIV, 44 f.
• PID: 20.500.12556/RUL-186272
• UDC: 681.527.7:004.4:621.22(043.2)
• COBISS.SI-ID: 289431811
• Publication date in RUL: 29.08.2026

Secondary language

• Language: English
• Title: Development of control for an electromagnetically and hydraulically driven system for dynamic component testing

Abstract

Within the scope of this thesis, PLC-based control was developed and experimentally verified for sinusoidal excitation of an electrodynamic shaker and a hydraulic drive. The common control structure combines sinusoidal signal generation, feedforward control, lock-in amplitude estimation, and PI control. For the hydraulic drive, it was extended with cylinder centre-position control and frequency-dependent feedforward. Its performance was evaluated using combined frequency-amplitude profiles, constant operating points, different profile durations and directions, and repeatability tests. The results show that the common software architecture enables amplitude tracking with both drive principles, but requires the feedforward control and controller settings to be adapted to the characteristics of each system. The electrodynamic shaker provided more accurate amplitude tracking, whereas the hydraulic drive was more sensitive to frequency and to the rate and direction of operating-point changes.

• Keywords: PID control, electrodynamic shakers, hydraulic drives, PLC controllers, amplitude control, lock-in method