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A new angular rate-based coning algorithm is proposed to improve the coning correction accuracy of the previous angular rate-based coning algorithm in maneuver environment. To design the new algorithm, it is needed to give the relationship between the uncompressed and the compressed angular rate-based algorithm forms, and to derive the uncompressed coning algorithm error residual in the given angular...
The structure and principle of permanent magnet slip clutch (PMSC) which was the important component of P-ECHPS was introduced, and the speed adjustment model of PMSC was set up too. PMSC output speed what is equivalent to steering pump speed should have the performance with great response agility and it has many uncertainties in the process of steering for heavy-duty vehicles. To tackle these problems,...
In the paper, a direct yaw-moment control (DYC) strategy is proposed for in-wheel electric vehicles by using second-order sliding mode control technique. The ideal sideslip angle at the center of gravity and yaw rate are first calculated based on a linear two-degree of freedom vehicle model. On this basis, the actual sideslip angle is identified and estimated by constructing a state observer. Then...
Hydraulic power steering (HPS) is generally used in heavy vehicles. For the purpose of reducing the energy consumption of HPS as well as improving high-speed stability and low-speed maneuverability of heavy vehicles, the electromagnetic clutch hydraulic power steering (ECHPS) is proposed, which is characterized by an electromagnetic clutch to control the steering pump. The electromagnetic clutch consisting...
The integrated control model of active suspension and electrical power steering system was established. General uncertainties which can cause vehicle unstable were considered. An integrated controller for both active suspension and electric power steering system of vehicle was constructed based on μ control theory. The μ control law minimized an objective function (H2 norm) for a given controller...
Using a new multi-body simulation software SIMPACK as platform, a whole mini-car model is built, and a PID controller with time-delay transfer function is adopted to set up the driver control model. A closed-loop simulation of severe double-lane change test is carried out. And according to the human-vehicle-road closed-loop maneuverability evaluation, the handling stability of the model is graded...
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