Introduction In a cascading failure of a power transmission system, an initial event that disables a possibly small subset of the grid conspires with the laws of physics to set off a sequence of additional outages that, in the worst case, accelerates until a large subset of the network is inoperative, resulting in a significant loss of served power. The mechanics of the process can be summarize...

In this paper, we introduce cascade normal forms for underactuated mechanical systems that are convenient for control design. These normal forms are partially linear which results from a well-known fact that un-deractuated systems can be partially linearized using a change of control 12]. The diiculty arises when the new control appears both in the linear and nonlin-ear subsystems. We introduce...

In this paper, we introduce cascade normal forms for underactuated mechanical systems that are convenient for control design. These normal forms are partially linear which results from a well-known fact that underactuated systems can be partially linearized using a change of control [12]. The difficulty arises when the new control appears both in the linear and nonlinear subsystems. We introduc...

Nowadays, motion control systems in industry are designed with fixed PLrPID cascade control loops. These control loops do not take into account the dynamic load variations that occur in many systems. Therefore, as the dynamics of the process inevitably varies, they fall out of tune, which causes the performance and stability to degrade. Also, time delays often arise in motor control systems, bo...

In this paper, a clutch actuator system for DCTs is developed by integrating a brushless DC motor with mechanical subsystems. The system modeling is performed with experimental validations. However, since the developed model is based on the linear system, it may include modeling uncertainties and external disturbances. To overcome this difficulty, a cascade control structure is proposed. Theref...

This paper is concerned with finite-time chaos control of unified hyperchaotic systems with multiple parameters. Based on the finite-time stability theory in the cascade-connected systems, a nonlinear control law is presented to achieve finite-time chaos control. The controller is simple and easy to be constructed. Simulation results for Lorenz hyperchaotic system, L ü hyperchaotic system, Chen...

This paper considers employing missile guidance concepts to design motion control systems for marine craft. Initially, classical concepts such as line of sight (LOS), pure pursuit (PP), and constant bearing (CB) are reviewed. Subsequently, the relationship of these concepts to motion camouflage strategies in nature is pointed out, as well as their application to robot manipulators. Ultimately, ...

This paper shows a new concept to generate medium voltage (MV) in wind power application avoid an additional transformer. Therefore, the generator must be redesigned with constraints and topology for rectifier system by using multiple low (LV) rectifiers connected series parallel increase DC output voltage. The combination of connection is further introduced as DC-cascade. With resulting DC-cas...

In applying nonlinear model-predictive control to fast unstable systems, the main difficulty is that the optimization cannot be finished within one sampling interval. To solve this problem, a cascade-control scheme has been proposed, where input-output feedback linearization forms the inner loop and nonlinear predictive control the outer loop. Thus, the nonlinear predictive control has to handl...

Abstract. This work presents a cascade controller for the trajectory tracking control of a hydraulic actuator by using adaptive algorithms to deal with parametric uncertainties together with an adaptive dead-zone compensation scheme. The hydraulic actuator is modeled as a forth order nonlinear system including the valve dynamic as a first order linear system and considering a valve with a dead-...