New method for the rigorous mathematical analysis of electronic synchronization systems is suggested. This method allows to calculate the characteristics of phase detectors and carry out a rigorous mathematical analysis of transient process and stability of the system.

In this note we address the problem of set-point control of robot manipulators with uncertain gravity knowledge by combining several previous contributions to PID control. The main contribution is a linear PID controller which ensures global asymptotic stability of the closed loop. The key feature of the controller is that the integration is started after a short transient. In the case of unmea...

Vergence insufficiency is frequent in many populations including children with vertigo in the absence of measurable vestibular dysfunction. Orthoptic exercises are typically used to improve vergence and the clinical practice suggests that simple repetition of vergence movements improves it. Objective eye movement recordings were used to asses the dynamics and spatial-temporal properties of conv...

This paper presents a small signal stability analysis to assess the issues facing PV (photovoltaic) inverters connected weak grid. It is revealed that cause of transient instabilities, either high-frequency or low-frequency oscillations, dominated by outer control loops and grid strength. However, most challenging oscillations are induced coupling interaction between loop controller PLL (Phase-...

This paper describes a dual-loop control scheme for fault tolerant flight control system design. The dual-loop controller consists of an outer loop controller–so-called adaptive neural sliding mode control (ANSC) and an inner loop controller designed by using nonlinear dynamic inversion (NDI) technique. The merits of adaptive neural network and sliding mode control scheme are that 1) the abilit...

A current limiter (CL), which protects virtual synchronous generators (VSGs) from overcurrents, may significantly alter the operation of VSGs when activated. In this letter, a transient stability analysis equipped with quadrature- (q-)prioritized CL is performed. This study shows that in addition to instability caused by positive feedback primary controller, VSG could become unstable after larg...

this paper presents optimal control method to path planning of mobile robots with flexible joints. dynamic equations are derived and additional kinematic constraints are used to solve the extra dofs arose from base mobility. then with modeling the elasticity at each joint as a linear torsinal spring, the set of equations are formed. the hamiltonian function is formed and the necessary condition...

This paper presents a new control approach for mitigating friction-induced vibration (FIV) issued from the mode-coupling mechanism. The key idea is to put friction system onto cascade of independent subsystems by using first-stage control. Then, second-stage defined and proven be much more efficient controlling both transient stationary regimes FIV. Asymptotic stabilization formally demonstrate...

Transient behavior in nuclear reactors is important accidents and with reactivity control systems that are driven by thermal feedback. Here, we describe a transient finite difference model for pin cell system. The fidelity of the shown validation against thermocouple measurements CABRI BI1 experiment Safety Analysis System-Sodium Fast Reactor experiment. In experiment, sodium-cooled mixed oxide...

Behavioural control in many animals involves complex mechanisms with intricate sensory-motor feedback loops. Modelling allows functional aspects to be captured without relying on a description of the underlying complex, and often unknown, mechanisms. A wide range of engineering techniques are available for modelling, but their ability to describe time-continuous processes is rarely exploited to...