When the test specimen or load requires instantaneous impact energy and demands high‑speed response on the millisecond or even nanosecond timescale, piston accumulators—either with or without an energy‑monitoring system—combined with Sevier high‑flow servo control valve assemblies can serve as the power source for delivering this transient impact energy. Depending on the test objectives or the motion characteristics of the load, the following centralized energy‑supply configurations are typically employed:
- A servo‑proportional valve manifold is employed to distribute the instantaneous flow rate from the accumulator, with control implemented via a PLC system, thereby enabling collision or pulse tests that meet standard test requirements.
- A dedicated Sevier proximity valve manifold is employed, with the energy‑storage power source mounted directly on the manifold. Control is managed via a PLC system, enabling faster local control.
- A gas‑liquid pressure‑boosting piston accumulator is employed, and a local controller mounted on the valve manifold enables nanosecond‑level local control, thereby achieving the experimental objective of delivering greater and faster energy.
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