Self-oscillation
Definition
An unwanted or sustained periodic oscillation that occurs in a physical, mechanical, or electronic system without the action of an external periodic force, being generated and maintained by a continuous energy source through a structural positive feedback mechanism. In electronics, this phenomenon often occurs in unstable amplifiers, turning them into parasitic signal generators, while in mechanics, it can cause destructive vibrations in structures or aircraft wings (flutter phenomenon).
Bilingual Equivalents
- Self-oscillation
- Parasitic oscillation
Grammatical & Source Details
| Inflection Type | Feminine noun, regular structural variations for singular and plural forms. |
| Formation | Noun of action derived from the base noun 'oscilație' prefixed with the reflexive structural component 'auto-'. |
| Spelling / Pronunciation | [ˌself.ɒs.ɪ.ˈleɪ.ʃən] |
| Source | Encyclopedia of Mechanical Vibrations and Wave Physics |
Contextual Usage Examples
RO: Inginerul a adăugat un condensator de decuplare pentru a opri acea autooscilație parazită din circuitul audio.
EN: The engineer added a decoupling capacitor to stop that parasitic self-oscillation in the audio circuit.
RO: Fenomenul de autooscilație poate deveni extrem de periculos dacă frecvența sa coincide cu rezonanța structurală a podului.
EN: The self-oscillation phenomenon can become extremely dangerous if its frequency coincides with the bridge's structural resonance.
RO: În timpul testelor de tunel aerodinamic, aripa prototipului a intrat în autooscilație din cauza fluxului de aer turbulent.
EN: During wind tunnel testing, the prototype's wing entered into self-oscillation due to the turbulent airflow.
Idioms & Phrases
Circuit în autooscilație / Self-oscillating circuit
RO: Ansamblu electronic conceput special sau deformat accidental care generează unde periodice fără semnal de intrare.
EN: An electronic assembly specially designed or accidentally warped that generates periodic waves without an input signal.
Autooscilație mecanică / Mechanical self-oscillation
RO: Mișcare vibratorie distructivă menținută de o forță constantă (cum ar fi vântul), transformată intern în impulsuri periodice.
EN: A destructive vibratory movement sustained by a constant force (such as wind), internally converted into periodic impulses.
Regim de autooscilație / Self-oscillation regime
RO: Stare stabilă de funcționare a unui sistem dinamic în care amplitudinea vibrațiilor rămâne constantă în timp.
EN: A stable operating state of a dynamic system where the amplitude of the vibrations remains constant over time.
Latest Contextual News
No recent news found for this topic.