Resonance type electromagnetic actuator
An actuator and electromagnetic technology, applied in the direction of electrical components, electromechanical devices, etc., can solve the problems of electromagnetic interference, large volume and weight, etc., and achieve the effects of easy integration, reduced magnetic energy loss, and compact structure
Active Publication Date: 2012-11-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
[0008] Aiming at the disadvantages of existing electromagnetic actuators, such as high-power power supply, large volume and weight, and electromagnetic interference, to generate large-load control force, the present invention provides a large-load control force that can be driven by a small-power power supply. Resonant electromagnetic actuator with compact structure and good anti-interference performance
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[0024] The present invention is designed based on the principle of electromagnetic induction, and is mainly composed of a vibrator main body 6 and a moving mass block 9 . The structure of the specific actuator is as follows figure 1 As shown: it includes a metal cover 4, which plays the role of fixed installation, electromagnetic shielding, sealing and dustproof; The magnetic column 5 is also fixedly connected with a high magnetic energy density annular rare earth permanent magnet 11 set on the periphery of the magnetic guiding column 5; the upper ring of the moving mass 9 is covered with a frequency modulation mass 3; The mass block 9 is fixed together, installed through the linear bearing 1, and the radial displacement of the guide post 2 is limited by the linear bearing 1; and supported in the metal cover 4 by the spring group 8; the upper end of the above metal cover 4 is also fixedly connected with a wound enameled coil The cylindrical sleeve 12 of 7, the cylindrical sl...
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The invention provides a resonance type electromagnetic actuator, belonging to the technical field of electromagnetic actuator. The actuator comprises a metallic outer shell (4), an oscillator body (6), a guide pillar (2) and a motion mass block (9), wherein the oscillator body (6) is fixedly connected with a magnetic conduct column (5), and is also fixedly connected with an annular permanent magnet (11) which is sleeved on the periphery of the magnetic conduct column (5); frequency modulation mass blocks (3) are distributed on the motion mass block (9); the guide pillar (2), the oscillator body (6) and the motion mass block (9) are fixedly connected together, are supported by a spring group (8) and are mounted through a linear bearing (1), and radial displacement is restricted by the linear bearing (1); a cylindrical sleeve (12) wound by an enameled coil (7) is fixedly connected on the upper end of the metallic outer shell (4); the cylindrical sleeve (12) is downward sleeved in the middle of the annular permanent magnet (11) and the magnetic conduct column (5); and sound absorbing sheet is adhered to the inner wall of the metallic outer shell (4). The resonance type electromagnetic actuator can generate large loading control under the driving of smaller power supply.
Description
Technical field [0001] The invention belongs to the technical field of electromagnetic actuators and can be used as an actuator in active vibration control systems of helicopters, airplanes, spacecraft, ships and the like. technical background [0002] As one of the important branches in the field of vibration control, active vibration control develops rapidly and is used in many occasions such as precision instruments, aerospace, transportation and machinery with outstanding effects. The actuator is a key part of the active vibration control system. Its main function is to exert control force on the control object according to the determined control law, so as to change the response of the system in the desired way. [0003] Actuators used for active vibration control can be mainly divided into hydraulic actuators, electromagnetic actuators and smart material actuators according to their structural forms. Among them, the main advantages of the electromagnetic actuator are:...
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IPC IPC(8): H02K33/18H02K33/02
Inventor 陆洋顾仲权洪亮游小亮
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS