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Traditional identification method for permanent magnet synchronous motor could not always guarantee the satisfying accuracy, thus an improved online identification method based on recursive fixed memory least square method is proposed in this paper to solve the problem above. A full rank equation is firstly constructed based on the q-axis voltage model under steady state. Then the recursive fixed...
An analytical compact model for tunnel field-effect transistor (TFET) circuit simulation is extended by adding a gate tunnel current model, a charge-based capacitor model, and a noise model. The equation set is broadly applicable across materials systems and TFET geometries and is readily fitted to rigorous physics-based device simulations and experimental results. To validate the gate current and...
This paper deals with the dynamical modeling and posture control of the electromechanical actuator (EMA)-based thrust vector control (TVC) system for aircraft engines. Addressing the issues of the large inertia and low stiffness existing in the TVC system driven by EMA, this paper established a 2-DOF mathematical model to describe the EMA dynamic characteristics. In order to overcome the influence...
Non-point source pollution is one of the major problems caused by agricultural activities especially from planting cultivation. This paper describes the application of the Soil and Water Assessment Tool (SWAT) model in agricultural non-point source pollution of the Laohahe River watershed, located in northeast China. This initial hydrologic modeling analysis will facilitate future applications of...
This paper deals with transfer alignment between the slave inertial navigation system (INS) of scientific experiment and the master INS of space moving platform. Firstly, the navigation equations of the master and slave INS in J2000 inertial frame are presented. Then, we derive the state equations of transfer alignment model in detail, which include the error equations of the slave INS navigation...
This paper deals with the equivalence between the traditional transfer alignment (TTA) equations and the rapid transfer alignment (RTA) equations proposed by Kain and Cloutier. The TTA and RTA equations are presented firstly, and the platform misalignment vector, the physical misalignment vector and the measurement misalignment vector introduced by Kain and Cloutier are explained. The relationships...
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