Marine dining table with six-DOF (degree of freedom) wave active compensation function and compensation method

Abstract

The invention discloses a marine dining table with a six-DOF (degree of freedom) wave active compensation function and a compensation method. The marine dining table is characterized in that a rotary platform parallel to an upper platform is arranged right above the upper platform, and a table top is fixedly connected right above the rotary platform through table legs; the center of the rotary platform is connected with an upper end of a vertical transmission shaft, the lower end of the transmission shaft extends out of a center hole in the upper platform with clearance and is coaxially and fixedly connected with an output shaft of a hydraulic motor; an angle sensor is arranged the lower end of the transmission shaft, five servo cylinders are connected between the upper platform and a lower platform, one servo cylinder is vertically connected to centers of the upper platform and the lower platform, and the other four servo cylinders are uniformly arranged in the circumferential direction of the edges of the upper platform and the lower platform and are mounted in an inclined manner; the vertical servo cylinder compensates heaving motion, the four inclined servo cylinders compensate swaying motion, surging motion, heaving motion, rolling motion and pitching motion, and the hydraulic motor compensates yawing motion, therefore, one safe and stable dining table is provided when a ship is in a swinging state.

Description

technical field [0001] The invention belongs to ship wave compensation technology, in particular to a ship table fixedly connected to the ship body and having the function of active wave compensation. Background technique [0002] The marine dining table is fixedly connected with the hull. It is a tool for seafarers to eat at present, and the marine dining table is required to be safe and stable. Due to the impact of wind and waves, ships operating at sea will rock irregularly with the waves, and the dining table will also rock irregularly, which seriously affects the normal dining of the diners and the safety of the utensils on the dining table. Therefore, appropriate measures must be taken to compensate the waves of the dining table in order to improve the working reliability of the marine dining table. [0003] The common wave active compensation system is mainly composed of sensors, controllers and actuators. The controller is the core part of the system. The controller...

AI Technical Summary

Problems solved by technology

[0004] The existing tables with wave compensation function on ships are mainly divided into two categories: one is that the wave compensation platform is a passive compensation platform, which uses a spring damping system to compensate the sway and heave of the hull, which has low precision and serious hysteresis; The second is the conventional active compensation platform, which can only compensate the three degrees of freedom of the ship's roll, pitch and heave, but cannot compensate the three degrees of freedom of sway, surge and yaw

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