ROTATABLE ENGINEERING MACHINERY ROTATION CONSTANT POWER CONTROL METHOD, SYSTEM AND ENGINEERING MACHINERY

摘要

A rotatable engineering machinery rotation constant power control method comprises step one (101): calculating rotation reference power P=M×g×V, M being mass of a lifted weight, g being a gravitational acceleration constant, and V being rotation linear velocity of the weight; step two (201): calculating rotation velocity of a rotation platform n=P×9.549/T_rated, T_rated being a rated output torque of a reduction box connected with a rotation driving device; and step three (301): controlling actual rotation velocity of the rotation platform (4) to be equal to the rotation velocity n of the rotation platform. In addition, the present invention further provides a rotation a constant power control system and rotatable engineering machinery used for implementing the control method. The control method and the control system of the present invention can achieve the following control objectives: during the weight rotation operation, the rotation velocity is fast with a light or close weight and is slow with a heavy or far weight according to different weights and working amplitude, hence guaranteeing high efficiency of rotation operation and maximum utilization of structural strength of the whole machine.