ساخت محرك مغناطيسي ريولوژيكي بر پايه لاستيك سيليكون

Manufacture of Magneto-rheological Actuator Based on Silicon Rubber

Actuators and sensors are the main components of a robot. Although the production of magneto-rheological actuators based on Newtonian fluids is commercially developed, yet it still suffers from the sedimentation of magnetic particles under stagnation or time duration condition. Polymeric gels more or less combat these problems, but they have some limitations mainly lacking mechanical strength. The use of polymeric elastomers eliminates both of these faults and provides the potential for manufacturing a practical actuator with reasonable mechanical strength without any sedimentation of magnetic particles. Recently, these properties have generated some interests in performing research works on polymeric elastomer actuator. In this work, a magneto-rheological actuator based on silicon rubber containing NdFeB magnetic particles is invented and the effect of important parameters such as magnetic particles loading and intensity of magnetic field on actuator behavior with constant geometry is investigated. The results show that the sample containing 25phr magnetic powders is in closest agreement with the theoretical estimations.