The linear electric machine-based gravity energy storage system (LEM-GESS) uses linear machines to vertically move multiple solid masses, or pistons, to store and discharge electrical energy.

Key points: • Consider supports, guides, drives, and seals when designing a linear system. Know your precision, repeatability, loading, and environmental requirements before starting linear ...

Unified treatment of continuous and discrete time systems from a state-variable viewpoint; emphasis on linear systems. Concept of state, writing and solving state equations, controllability and ...

Are the drives that run rotary motors capable of driving linear motors? Depends on the application. Some requirements for motor speed and accuracy make demands that the average ...

But linear systems can do more than just count chickens and pigs. They crop up in many practical settings, where building a sturdier bridge or a stealthier aircraft can involve solving systems with ...

SIAM Journal on Numerical Analysis, Vol. 12, No. 4 (Sep., 1975), pp. 617-629 (13 pages) The method of conjugate gradients for solving systems of linear equations with a symmetric positive definite ...

In this paper we estimate a complete system of demand equations making full use of the restrictions implied by economic theory. Our theoretical model is based on the Klein-Rubin linear expenditure ...

Nonlinear systems come in all shapes and sizes. Linear dynamics is a useful abstraction, but if you look long enough at any real system you consider linear, you will discover nonlinearities. It ...