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A Single-Sensor Control Strategy for Semi-Active Suspensions

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2 Author(s)
Savaresi, S.M. ; Dipt. di Elettron. e Inf., Politec. di Milano, Milan ; Spelta, C.

The topic of this brief is the design and analysis of a control strategy for semi-active suspensions in road vehicles. Currently used closed-loop control strategies (like the Sky-Hook damping) require two sensors for each suspension. Typically, two accelerometers or an accelerometer combined with a stroke sensor are used. In this brief, a simple but innovative algorithm is proposed that is capable of providing quasi-optimal performance using a single accelerometer. The starting point of this work is the Mix-SH-ADD control algorithm, which has been recently developed and proposed. Starting from that idea, the single-sensor algorithm is derived. This algorithm pays a small price in terms of performance with respect to the mix SH-ADD algorithm, while guaranteeing cost reduction and augmented reliability.

Published in:

Control Systems Technology, IEEE Transactions on  (Volume:17 ,  Issue: 1 )