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A H infinity observer based method is proposed to estimate the state of charge (SOC) for a series-connected battery pack for electric vehicles. In this method, an average virtual cell (AVC) model is defined and the SOC of the AVC model is estimated to represent the pack SOC when all terminal voltage differences (TVD) between each individual cell in the pack and the AVC are within a voltage value set...
Acoustic signals in a shallow ocean environment are severely distorted due to the time-varying and inhomogeneous nature of the propagation channel. In this paper, a state-space model is introduced to characterize the uncertainties of the shallow ocean and a Rao-Blackwellized particle filter (RBPF) is developed to estimate the model parameters. Since both modal functions and horizontal wave numbers...
Steam-valving and excitation systems play an important role to maintain the transient stability of power systems with synchronous generators when power systems are subjected to large disturbances and sudden load changes. This paper presents a nonlinear adaptive backstepping approach for controlling excitation and steam-valving systems of synchronous generators. In this paper, the proposed excitation...
Personnel transport vehicles in underground mines are used to transport miners and light equipment within the mine, and are generally driven by diesel engines. To reduce the emission, the eco-friendly electric vehicles (EVs) have been introduced in underground mining. This EV consists of a wheel/axle, final drive, traction motor and energy storage. The model of this vehicle is developed based on the...
In this paper, a thermoelectric energy scavenger with one thermoelectric (TE) module is discussed. Its steady state mathematical model is established with the method of electro-thermal analogy. Equations of output voltage and electric power vs. load resistance are derived, and then used to simulate the scavenger performance. Furthermore, two thermoelectric modules are connected in series both thermally...
Two side direction burrs is an important factor of influence to edge quality and performance of precision parts. A finite element model was developed for simulation of two side direction burr formation process. Based on strain distribution, a two side burr formation mechanism was proposed. Strain of Cutting lay material near the side face in two side direction of work piece is determinant factor of...
In this paper, the state feedback decoupling control for bilinear systems is discussed. The sufficient condition for the existence of decoupling controller and the design procedure are given. A real world example, the headbox control of a paper machine, demonstrates the efficiency of the proposed method.
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