Load adjustment regulation appts. for overhead crane - has velocity control unit for crane carriage that has corrected values for position and suspension angle fed into command velocity

摘要

The overhead crane of the type used for container (14) handling has a cartridge (10) that is moved by a motor (M1) that operates with a speed control unit (11). The support cable (13) is also coupled to a motor (12) with a separate speed control (12). A manual control panel provides an input (22) coupled to the cable control and a regulator (30) controls the movement of the crane. Position (X) and support angle (O), correction units (32,33) provide values that are summed (34) and used to adjust the position of the crane carriage. A processor (36) determines amplifier gain values (k1, k2, k3) that are used in the correction summing equation. ADVANTAGE - High operational flexibility. Accurate control of load position.