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Resolved motion rate control of a materials-handling machine

Resolved motion rate control - a technique developed for controlling robotic manipulators - is applied here to an industrial vehicle used for the handling of materials. An on-board microprocessor is used to compute trigonometrical transformations necessary to achieve co-ordinated movement of servo-valves which control the hydraulic cylinders. It is shown that, by this method, the operator's task is significantly eased, bringing potential benefits in speed of operation and safety.