Abstract-Most current multi-axis web machine controllers are not designed to possess the inter-axis stiffness properties that were the inherent coordinating force in historical mechanically coupled "line-shafted" multi-axis web machines. As a result, these controllers cannot maintain coordination for all operating conditions. This paper presents the development of an "electronic line-shafting" control technique which serves to replicate and even improve on the historical mechanical line-shafted properties. This technique was implemented on a five-axes filament winding machine to evaluate such control during periods when the drive was in torque limit, velocity limit, or simply responding to asymmetric load-induced disturbances. The results demonstrate that the "electronic line-shafting" technique significantly improves the coordination, robustness, and overall stability of multi-axis web-handling machines subjected to realistic physical limitations.

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By “combustion gas turbine” is meant a turbine actuated by the steady flow of the products of a continuous combustion under pressure in a combustion chamber. Inventors appear to have been at work on the gas turbine since 1791, the original attractions of the proposal being its simplicity and the elimination of the reciprocating motion of the early steam engines. Simplicity remains the principal advantage of the gas turbine, though the first applications have been made possible by the needs of special chemical processes, such as the Houdry cracking process. The efficiency attainable under present conditions is 17–18 per cent, but this would be increased to 23 per cent if the gas inlet temperature could be raised from 1,000 to 1,300 deg. F. The proposed new fields of application of the gas turbine include locomotive and marine propulsion, blast furnace plants, and the power supply for wind tunnels.

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