Positive real synthesis and passive implementation method of vehicle ISD suspension electromechanical network system

Abstract

The present invention belongs to the field of vehicle passive suspension vibration isolation, and relates to a positive synthesis and passive implementation method of a vehicle ISD suspension electromechanical network system. The method comprises: Step 1: determining a dynamic model of vehicle suspension vibration and a performance evaluation index thereof; Step 2: establishing a vehicle ISD suspension electromechanical network system; Step 3: according to the performance optimization target, under the positive real inequality constraints, using the improved multi-PSO algorithm to optimize thesolution of the vehicle ISD suspension electromechanical network system to obtain the corresponding impedance transfer function coefficients; Step 4: carrying out positive real synthesis on the impedance transfer function obtained from the vehicle ISD suspension electromechanical network system; and Step 5: carrying out passive implementation on the vehicle ISD suspension electromechanical network system based on the electromechanical inertia. According to the method disclosed by the present invention, the limitation of the ISD suspension structure type design method and the difficult problemthat the impedance type design method cannot implement can be effectively solved, and a new method is provided for the structure design and implementation of the suspension.

Description

technical field [0001] The invention relates to the field of passive vibration isolation of a vehicle suspension, in particular to a positive-real synthesis and passive realization method of a vehicle ISD suspension electromechanical network system. Background technique [0002] The vehicle passive ISD (Inerter-Spring-Damper) suspension using an inerter device has attracted widespread attention because of its low cost and excellent vibration isolation performance. At present, the structural design of the vehicle ISD suspension is always the primary issue in the study of its performance. Looking at the existing research results, the structural design can be divided into two categories: one is the structural design method. This type of method obtains the structure of the new ISD suspension by using the inerter device to improve the design of the mechanical prototype or extract the common features of the structural design; the structure obtained by this type of method cannot c...

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Problems solved by technology

This type of method obtains the structure of the new ISD suspension by using the inerter device to improve the design of the mechanical prototype or extract the common features of the structural design; the structure obtained by this type of method cannot cover all suspension impedance forms, which has limitations Shortcomings

The other is the impedance-type design method, which expresses the suspension structure in the form of impedance, solves it by converting it into a positive real controller, and then realizes it as a mechanical network by analyzing the form of impedance. The disadvantage is that The number of network elements is large, and it is difficult to realize in practical applications

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