Travelling crane positioning control system and control method

Abstract

The invention discloses a travelling crane positioning control system and a control method. The control system comprises a brake, a walking frequency converter and a walking motor, and further comprises a distance positioning sensor used for measuring the actual walking distance y of a travelling crane, and a walking controller. The walking controller comprises a differencing module, a first selection unit, an acceleration controller, a deceleration controller and a braking controller. The output end of the distance positioning sensor is connected with the input end of the differencing module; the output end of the differencing module is connected with the input ends of the braking controller and the first selection unit; the output end of the braking controller is connected with the brake; the output end of the first selection unit is connected with the input ends of the acceleration controller and the deceleration controller; and the output ends of the acceleration controller and the deceleration controller are connected with the walking frequency converter. The system and the method are easy to operate; automatic positioning control on a travelling crane can be realized, and the manpower cost can be reduced; the control accuracy and stability are high, and the error is small; and the travelling crane brake is of little wear and long service life.

Description

technical field [0001] The invention particularly relates to a driving positioning control system and a control method. Background technique [0002] Crane is a kind of handling tool, which has a large number of applications in workshops, workshops, warehouses, docks and other workplaces in steel, metallurgy and other industries. [0003] Traditional driving positioning control is mainly manual control by the driver, that is, the driver manually decides when to brake the driving by operating the brake. The consequence of this manual control method is that there is often a large deviation between the actual stop position of the driving vehicle and the expected stop position at the end of braking, large positioning deviation, and extremely low control accuracy. Simultaneously, owing to have gone through a section of longer time from starting brake to driving completely static, braking time is longer, therefore caused greater wear and tear to brake, reduced the service life of...

AI Technical Summary

Problems solved by technology

For example, in the zinc stripping process of the zinc electrolysis workshop, the driving needs to continuously hoist the cathode plate of the electrolytic cell to the zinc stripping machine. At present, the scale of the enterprise is getting larger and larger, and the labor cost is getting higher and higher.

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