Research Article
Optimal Control of Semiactive Two-Stage Vibration Isolation Systems for Marine Engines
Table 2
Simulation parameters of the two-stage isolation system.
| | Parameters | Value |
| | Mass of engine (kg) | 220 | | Inertia around the X-axis (kg m2) | 16 | | Inertia around the Z-axis (kg m2) | 12 | | Mass of intermediate block (kg) | 110 | | (mm) | 250 | | (mm) | 280 | | (mm) | 235 | | (mm) | 245 | | Stiffness of upper isolator K (kN/m) | 2400 | | Stiffness of lower isolator K (kN/m) | 3800 | | Radius of crank (mm) | 50 | | Ratio of crank radius to connecting rod length | 0.31 | | Reciprocating part mass of the piston | 0.85 | | Speed of the engine n/(r/min) | 0–3000 |
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