**Point of zero charge** — The point of zero charge (pzc), in physical chemistry, is a concept relating to the phenomenon of adsorption, and it describes the condition when the electrical charge density on a surface is zero. It is usually determined in relation to an… … Wikipedia

**Zero Moment Point** — is a concept related with dynamics and control of legged locomotion, e.g., for humanoid robots. It specifies the point with respect to which dynamic reaction force at the contact of the foot with the ground does not produce any moment, i.e. the… … Wikipedia

**Stability derivatives** — are a means of linearising the equations of motion of an atmospheric flight vehicle so that conventional control engineering methods may be applied to assess their stability.The dynamics of atmospheric flight vehicles is potentially very… … Wikipedia

**stabilité du zéro** — nulio stabilumas statusas T sritis radioelektronika atitikmenys: angl. zero point stability vok. Nullpunktstabilität, f rus. устойчивость нуля, f pranc. stabilité du zéro, f … Radioelektronikos terminų žodynas

**Nyquist stability criterion** — The Nyquist plot for . When designing a feedback control system, it is generally necessary to determine whether the closed loop system will be stable. An example of a destabilizing feedback control system would be a car steering system that… … Wikipedia

**Longitudinal static stability** — is important in determining whether an aircraft will be able to fly as intended. Static stability As any vehicle moves it will be subjected to minor changes in the forces that act on it, and in its speed. * If such a change causes further changes … Wikipedia

**Directional stability** — is stability of a moving body or vehicle about an axis which is perpendicular to its direction of motion. Stability of a vehicle concerns itself with the tendency of a vehicle to return to its original direction in relation to the oncoming medium … Wikipedia

**Lyapunov stability** — In mathematics, the notion of Lyapunov stability occurs in the study of dynamical systems. In simple terms, if all solutions of the dynamical system that start out near an equilibrium point x e stay near x e forever, then x e is Lyapunov stable.… … Wikipedia

**relaxed static stability** — The operation of an aircraft at the center of gravity aft of the neutral point where the airplane has a negative static margin. The neutral point is that point along the path of the center of gravity movement where the stick force per knot drops… … Aviation dictionary

**Lagrangian point** — The Lagrangian points (IPA en|ləˈgreɪndʒiən, IPA fr|lagʁɑ̃ʒjɑ̃; also Lagrange point, L point, or libration point), are the five positions in an orbital configuration where a small object affected only by gravity can theoretically be stationary… … Wikipedia