Abstract
The paper discusses the control philosophy, machine design and experimental performance of a prototype linear vernier reluctance motor used to form a conveyor system. This is intended to automatically carry samples between radio-active environment glove boxes. The important requirement was for reliability via an open loop control. The prototype supplies three glove boxes and is in modules one metre long for each, extendable up to 20 in all. A reluctance motor can satisfY these requirements since only the stator coils and rotor (attached to the underside of the trolley) are within the box. The control logic and power electronics are outside the radio-active area. A vernier motor enables a simple interchange during design of step size for excitation cycles required. The required linear speed can then be achieved with a simple resistance limited power amplifier.
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