A collaborative drive and passive active braking method for large inertia loads

Abstract

The invention discloses a cooperative driving and passive active braking method for a large inertia load. The method is used for a driving working condition and a braking working condition of the large inertia load. A driving working condition cooperates with a driving control system to jointly drive the load to operate through cooperative control over a positive displacement pump control closed subsystem and an inlet and outlet independent adjusting subsystem, the driving rigidity of the system is improved, and the driving capacity of the system is improved. A braking working condition positive displacement pump control closed subsystem actuator works in a pump mode, load braking energy is converted into hydraulic energy to be supplied to an inlet and outlet independent adjusting subsystem, the inlet and outlet independent adjusting subsystem achieves active control over recycled load braking energy by controlling an inlet and outlet independent adjusting flow valve according to the given load braking track and the load state fed back in real time, and therefore passive active braking for the load is achieved. Cooperative driving and passive active braking for the load are achieved, the problems that braking stability is poor and braking energy is difficult to store can be effectively solved, and the method is particularly suitable for the large inertia load working condition.

Description

technical field [0001] The invention belongs to the technical field of hydraulic drive energy saving, and in particular relates to a coordinated drive and passive active braking method for large inertia loads. Background technique [0002] In the actual production process, the large inertia load condition is an unavoidable condition. Faced with this working condition, the first consideration in the design of the traditional large inertia load hydraulic drive system is the poor stability of the load inertia braking process. To solve this problem, Qin Weiye et al. proposed to reduce the setting of the relief valve of the rotary system Pressure method, although this method reduces the hydraulic shock during the braking process of large inertia loads to a certain extent, it increases the overflow and heat generation of the system, which is based on sacrificing energy consumption and working efficiency of the slewing system; During the experiment, Sunward proposed to increase th...

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Problems solved by technology

[0005] The present invention aims at the above-mentioned problems existing in the large inertia load hydraulic drive and energy regeneration technology, in order to effectively solve the problems of unstable braking of large inertia loads and difficult storage of braking energy, improve the recovery and utilization efficiency of braking energy, and realize the The high-precision active control of energy provides a large inertia load cooperative drive and passive active braking method that has a compact structure, stable system operation, and realizes "receive and use" braking energy and "passive" active braking.

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