A Novel Superparamagnetic Electromagnetic Actuator

Abstract

The invention provides a novel superparamagnetic electromagnetic actuator. The novel superparamagnetic electromagnetic actuator comprises excitation electromagnetic coils, detection coils, a coil supporting sleeve, sleeve end covers, a ferromagnetic droplet driving module, limiting baffles and a coil sleeve, wherein the coil supporting sleeve serves as a supporting frame for winding coils, the left side and the right side of the supporting frame are respectively provided with each excitation electromagnetic coil, each detection coil is wound on each excitation electromagnetic coil, two ends of the coil supporting sleeve are respectively provided with each sleeve end cover, and a central hole is formed in each sleeve end cover. According to the structure of the ferromagnetic droplet driving module, a plastic ball or glass ball filled with ferromagnetic liquid is arranged in the middle, two ends of the ferromagnetic droplet driving module are respectively provided with a long rod connected with the central ball, the two long rod are coaxial, two ends of each long rod extend out of the sleeve through central holes at two ends of the coil supporting sleeve, a protruding head is arranged at the front section of each long rod, and the two limiting baffles are respectively arranged on the two long rods. The novel superparamagnetic electromagnetic actuator is capable of controlling the displacement and driving force of the actuator.

Description

technical field [0001] The invention relates to a new type of electromagnetic driver. By energizing two exciting electromagnetic coils, the ferromagnetic droplet driving module inserted in the center hole can move along the two sides of the axis of the center hole, and can be detected by the detection coil at the same time. The displacement and force of the current ferromagnetic droplet module deviating from the initial position, specifically involving a new type of superparamagnetic electromagnetic actuator. Background technique [0002] With the rapid development of micro-nano science and technology, micro-motion systems with high operating precision are urgently needed in the fields of micro-electromechanical systems, bioengineering, and molecular atomic manipulation. [0003] The main forms of traditional micro-actuators are piezoelectric drive, shape memory alloy drive, electrostatic drive and electromagnetic drive. However, piezoelectric drives, shape memory alloy dri...

AI Technical Summary

Problems solved by technology

However, piezoelectric drives, shape memory alloy drives, and electrostatic drives cannot meet the range of motion, motion accuracy, and motion response parameters of micro-drivers at the same time.

The traditional electromagnetic drive generally has a magnetic core, large volume, mass, and large inertia, and the response time is slow under the same thrust, which cannot meet the requirements of fast execution.

And most micro-drivers do not have the function of synchronous detection of position and force, and cannot accurately control the precision of the drive

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