Equivalent replacement Taylor series LQG time-delay compensation control system of magnetorheological semi-active suspension and construction method of equivalent replacement Taylor series LQG time-delay compensation control system

Abstract

The invention discloses an equivalent replacement Taylor series LQG time-delay compensation control system of a magnetorheological semi-active suspension and a construction method of the equivalent replacement Taylor series LQG time-delay compensation control system. The output ends of a sprung mass acceleration sensor and a wheel mass acceleration sensor are connected to an extended Kalman filter, and the output end of the extended Kalman filter is connected to an equivalent replacement Taylor series LQG time-delay compensation controller. The equivalent replacement Taylor series LQG time-delay compensation controller is connected with a time-delay compensation prediction controller and a semi-active power acquisition controller separately, and the time-delay compensation prediction controller is connected to the input end of the equivalent replacement Taylor series LQG time-delay compensation controller. The semi-active power acquisition controller is connected with the extended Kalman filter and a control current solution controller separately, and the control current solution controller is connected to a numerical control current source to realize the compensation control overdamper response time delay and mechanical characteristic time variation of the magnetorheological semi-active suspension. Through the equivalent replacement Taylor series LQG time-delay compensation control, the comprehensive performance index of the suspension can be accurately tracked, and thus a more ideal time-delay compensation control effect can be obtained.

Description

technical field [0001] The invention belongs to the field of vehicle suspension control, and in particular relates to a magneto-rheological semi-active suspension equivalent replacement Taylor series LQG time lag compensation control system and a construction method thereof. Background technique [0002] Suspension is an important structural and functional part of a car, which has an important impact on the ride comfort and driving safety of the car. Magneto-rheological semi-active suspension does not need to output active power, and can output semi-active control force with positive damping characteristics according to changes in vehicle driving conditions. Comprehensive performance. [0003] However, the current problem with magnetorheological semi-active suspensions is the response time lag. The main reasons for the response time lag are: sensor transmission time lag, controller calculation time lag, current response time lag, magnetorheological fluid response time lag, ...

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Problems solved by technology

[0003] However, the current problem with magnetorheological semi-active suspensions is the response time lag. The main reasons for the response time lag are: sensor transmission time lag, controller calculation time lag, current response time lag, magnetorheological fluid response time lag, etc. Affect th

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