Electro hydraulic steering system is the steering hydraulic steering and combining it with the body, the electro-hydraulic proportional valve to replace the hydraulic steering gear. We can see from Figure 1, by wire steering system mainly consists of three modules: the steering wheel steering module, execution module and main controller module. The steering module is made up of a hydraulic system. In the picture, the thick section represents the hydraulic part and the dotted line represents the electronic signal. The steering control strategy is the core technology of steer by wire system, mainly composed of three parts, namely the road feeling control strategy, active steering control strategy and fault tolerant control strategy. This paper mainly studies the active steering control strategy.
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