Fuzzy switching control method for electric control system for damping multi-mode semi-active suspension
A technology of semi-active suspension and control method, which is applied in the direction of suspension, elastic suspension, geometric CAD, etc., which can solve the requirements of continuous input and discrete output of the controller, inaccurate control, and high model accuracy requirements, etc. question
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[0048] In order to make those skilled in the art understand the characteristics of the technical solution of the present invention, the present invention will be described in detail below in conjunction with specific embodiments.
[0049] First step 1 establishes the semi-active suspension model, and determines the suspension damping range and gear division according to the optimal damping ratio. The vertical acceleration of the vehicle body is used as an index for judging comfort, and the dynamic load of wheels is used as an index for judging safety. According to the previously established semi-active suspension model, the response analytical formulas for comfort and safety under white noise vibration are obtained respectively:
[0050]
[0051]
[0052] In the formula: n 0 is the spatial frequency, v is the vehicle speed, G q (n 0 ) is the unevenness coefficient of the road surface.
[0053] respectively Get the optimal damping ratio of the suspension based on co...
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