Control Method of Multi-mode Hybrid Suspension Actuator

Abstract

The invention discloses a control method for a multi-mode hybrid suspension actuator. The multi-mode hybrid suspension actuator includes an actuator body and a control unit. The actuator body includes an air spring mechanism and is arranged on the air spring The double-outlet rod type magneto-rheological shock absorber in the mechanism, the upper linear motor unit arranged on the upper part of the double-outlet rod type magneto-rheological shock absorber and located in the air spring mechanism, and the double-outlet rod type magneto-rheological shock absorber The lower linear motor unit at the lower part of the device; the control method includes steps: 1. Data acquisition and synchronous transmission; 2. Calculating the ideal damping force under the control of the vehicle suspension LQG; 3. Calculating the root mean square value of the weighted acceleration of the vehicle; 4. , Control the multi-mode hybrid suspension actuator. The invention has novel and reasonable design, convenient realization and low cost, high working stability and reliability, high energy feeding efficiency and high real-time performance, can make the hybrid suspension in the best damping state, has strong practicability, and is easy to popularize and use.

Description

technical field [0001] The invention belongs to the technical field of vehicle suspension actuators, and in particular relates to a control method of a multi-mode hybrid suspension actuator. Background technique [0002] When the vehicle is running, the vehicle vibrates due to the excitation of the unevenness of the road surface. At present, what is widely used in automobiles is to realize the functions of damping vibration and carrying the body through passive suspension (composed of shock absorbers, elastic elements, etc.). However, the performance parameters (stiffness and damping) of the passive suspension cannot be adjusted in real time according to the actual working conditions of the vehicle during driving. The frame converts the energy of the vibration of the car into heat energy and dissipates it in the air through the shock absorber and the elastic element, and it is not utilized. Due to the shortcomings of the passive suspension that cannot adjust the vibration ...

AI Technical Summary

Problems solved by technology

However, the failure of the linear motor actuator is not considered. If the actuator fails, it will have no effect on energy recovery.

At the same time, the linear motor occupies too much invalid volume in the air spring, which will indirectly lead to an increase in the volume of the composite semi-active suspension.

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