1 results about "Active passive" patented technology

This invention discloses a hydraulic control system and method for a deep-sea hoisting hook-type active-passive wave compensator, belonging to the field of hydraulic control technology for deep-sea engineering equipment. The system includes actuators, passive control, active control, buffer control, an accumulator, and a power module. The actuator consists of a passive wave compensation cylinder and symmetrically arranged active wave compensation cylinders. The passive cylinder bears the main load and achieves passive compensation via a gas-loaded accumulator. When the compensation accuracy is insufficient, the active control module controls the active cylinder through a servo valve based on wave detection signals to achieve high-precision composite compensation. The buffer control module provides throttling buffer protection at the end of the passive cylinder's stroke. The accumulator module uses a radar sensor to monitor the piston position and adapts to the optimal compensation stroke for different water depths. The power module provides a high-pressure oil source. This invention combines low energy consumption and high precision, adapts to changes in water depth, switches smoothly, and is easy to maintain, making it suitable for complex sea conditions such as deep-sea hoisting and installation of seabed facilities.