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As a key structure in an aircraft, rudder is employed to steer the flight vehicle under the instructions of center control unit. There are three main components in rudder: actuator, transmission, and control surface. Power is usually transmitted from the actuator to the control surface via the transmission. To some degree, the performance such as the efficiency and rigidity of rudder is directly determined...
The longitudinal motion equations were built by mathematical model of target drone movement. The longitudinal linearized equation was got by the lineairzation of longitudinal motion equations. The modality character was analysed by the solution. According to remolding motion, the effection on dynamic stability by flight speed, height and centroid position variation was researched and corresponding...
The electric-hydraulic actuator (EHA) of the motor-pump coordinated control is mostly applied into the flight control system, and it is a kind of power-by-wire (PBW) actuator with removing the central hydraulic power supply. The actuator system remains the hydraulic power partially, so the system has the characteristics of the hydraulic system such as: the compressibility of the hydraulic oil, friction...
The electric-hydraulic actuator (EHA) of the motor-pump coordinated control is mostly applied into the flight control system, and it is a kind of power-by-wire (PBW) actuator with removing the central hydraulic power supply. The actuator system remains the hydraulic power partially, so the system has the characteristics of the hydraulic system such as: the compressibility of the hydraulic oil, friction...
Generalized projective synchronization of time-delayed fractional order chaotic systems is studied. By using the stability theory of linear fractional order systems with time delays, suitable conditions for achieving generalized projective synchronization are given. Numerical simulations coincide with the theoretical analysis.
Acoustic feedback is a common problem in most hearing aids, it reduces the maximum useable gain and even causes "howling" while large forward gain is required, which is quite annoying for patient with severe hearing losses. This paper gives a new combination of de-correlation LMS adaptive algorithm and fixed forward delay to better de-correlate input and output signals of hearing aids as...
The amount of information is exponentially increasing over the Internet where information sources are autonomic, heterogeneous and dynamic. Thus, effective selective dissemination of relevant information is very essential for users. Publish/subscribe systems are gaining increasing popularity due to its loose coupling and scalability. However, traditional content-based pub/sub systems are crisp and...
For a general nonlinear fractional-order differential equation, the numerical solution is a good way to approximate the trajectory of such systems. In this paper, a novel algorithm for numerical solution of fractional-order differential equations based on the definition of Grunwald-Letnikov is presented. The results of numerical solution by using the novel method and the frequency domain method are...
For a general nonlinear fractional-order differential equation, the numerical solution is a good way to approximate the trajectory of such systems. In this paper, a novel algorithm for numerical solution of fractional-order differential equations based on the definition of Grunwald-Letnikov is presented. The results of numerical solution by using the novel method and the frequency domain method are...
In this paper, the small data sets algorithm of calculating the Largest Lyapunov exponent for integer-order systems is used for fractional order systems. As an example, the largest Lyapunov exponent of the fractional-order Rossler system is investigated. The lowest order for this system to have chaotic behavior is presented. The largest Lyapunov exponents of fractional-order Rossler system with different...
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