可调电磁负刚度极低频惯性作动器及振动主动控振系统
By designing an adjustable electromagnetic negative stiffness ultra-low frequency inertial actuator and utilizing structural adjustments to the electromagnetic negative stiffness component and stator component, the problem of insufficient force transmission rate and mover load-bearing capacity in ultra-low frequency vibration control of inertial actuators is solved, achieving efficient and flexible vibration control, adapting to complex environments, and improving control effect and energy utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HARBIN ENG UNIV
- Filing Date
- 2026-04-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing inertial actuators struggle to simultaneously guarantee high force transmission rate and static load-bearing capacity of the moving part in ultra-low frequency vibration control, resulting in poor control performance, high system energy consumption, and an inability to effectively cope with ultra-low frequency vibrations characterized by long wavelengths, high energy, strong penetration, and high resonance risk.
An adjustable electromagnetic negative stiffness ultra-low frequency inertial actuator is designed. The current is controlled by the stiffness compensation coil in the electromagnetic negative stiffness component to adjust the equivalent dynamic stiffness of the actuator. Combined with the structural design of the stator and mover components, the output force spectrum can be effectively adjusted and the dynamic stiffness can be adjusted to meet the vibration control requirements under different working conditions.
It ensures the load-bearing capacity of the mover within a limited assembly space, improves the force transmission rate characteristics, enhances the active control effect of ultra-low frequency vibration, increases energy utilization, adapts to various vibration control scenarios, avoids the long deformation stroke of mechanical spring stiffness, saves installation space, and has the advantages of large output force amplitude, wide operating frequency band and fast response.
Smart Images
Figure CN122083113B_ABST