In:
Journal of Dynamic Systems, Measurement, and Control, ASME International, Vol. 133, No. 4 ( 2011-07-01)
Abstract:
The high energy consumption of market-ready active suspension systems is the limiting factor in the competition with semi-active devices. The variable geometry active suspension is an alternative with a significantly lower power consumption. However, previous designs suffer from packaging problems, nonlinear stiffness characteristics, and failsafe issues. This paper discusses the feasibility of a recently presented, new design, variable geometry actuator, which has a fixed spring and constant stiffness. An actuator model is derived that includes the electric motor and friction characteristics. Using this model, a cascaded controller is developed and the steady-state and dynamic properties are evaluated. The simulation results are validated with prototype tests. The results show a good correspondence between simulations and measurements. Furthermore, a 10 Hz bandwidth can be easily obtained. It is concluded that the electromechanical low-power active suspension design is feasible and that the model gives a fairly accurate representation of both the steady-state and dynamic characteristics of the prototype.
Type of Medium:
Online Resource
ISSN:
0022-0434
,
1528-9028
Language:
English
Publisher:
ASME International
Publication Date:
2011
detail.hit.zdb_id:
240760-7
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