For a processing line consisting of m dc-motor-driven pinch roll pairs connected by a massless strip, a set of m - 1 algebraic equations has been derived to solve for the maximum tensions in the m-1 strip segments. The results are compared to the classical approach which consists of solving a system of simultaneous differential equations made up of m equations for motor characteristics and m-1 equations for strip characteristics.
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Albert F. Harsch (1969) studied this question.