Semi-active dual-port mechanical element capable of online continuous control of proportionality coefficient

Abstract

The present invention provides a semi-active dual-port mechanical element capable of online continuous control of a proportionality coefficient. The semi-active dual-port mechanical element comprisesa rotation fly wheel and a ball screw which are coaxially connected up and down; the rotation fly wheel comprises a servo motor, a vertical sliding rod, a forced push rod sleeving the sliding rod andpushed downwards by the servo motor, each sliding arm connected with the bottom end of the forced push rod and installed on the sliding rod through a bearing, fixing arms installed at the bottom end of the sliding rod through the bearing and level regulation arms corresponding to the sliding arms and the fixing arms, the tail end of each sliding arm slides along a chute on each level regulation arm, the tail end of each fixing arm is rotationally connected with the regulation arms, mass blocks are fixed at the bottom portions of the level regulation arms, and the top end of the ball screw is rigidly connected with the bearing seats of the fixing arms. The rotation fly wheel employs a labor-saving lever principle to change the distance between the mass blocks and a rotation shaft online soas to change the rotational inertia of the fly wheel and change the energy stored in the fly wheel through control of the rotational inertia of the rotation fly wheel so as to achieve the online control of the proportionality coefficient.

Description

technical field [0001] The invention relates to an inertial capacity, in particular to an inertial capacity for online control of flywheel rotational inertia. Background technique [0002] Inertia is a new dual-port mechanical element proposed by Professor Smith of Cambridge University, which satisfies the characteristic that the force applied to the two ports is proportional to the relative acceleration of the two ports. The proportional coefficient is called the inertial capacity, and the unit is kilogram. At present, there are different realization methods for inertial capacity, such as rack and pinion type, ball screw type, and hydraulic type. . However, the inertia capacity obtained by this kind of realization method is actually a passive component (also called a passive component), that is, the inertia capacity cannot be adjusted online. This means that after the inertial capacity is processed and applied, a closed-loop control system cannot be formed, and the inerti...

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Problems solved by technology

Although the method of online control of the transmission ratio can be realized by means such as automotive infinitely variable gearboxes, planetary gearboxes, and control of hydraulic transmission pipelines, the implementation scheme is too complicated, which is not conducive to practical engineering applications

On-line control of flywheel moment of inertia can be achieved by online control of the radius of rotation of the slider in the radial position of the flywheel. However, when the flywheel rotates at high speed, the slider will bear a large centrifugal force, which makes it difficult to change the radial position of the slider online. It requires a large thrust and consumes a lot of energy, so it is not suitable for application in semi-active control systems

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