A dual flexible beam control device and method for direct drive of rotation and movement
A control device and drive control technology, applied in non-electric variable control, control/adjustment system, and simultaneous control of multiple variables, etc., can solve the problems of low natural frequency of flexible structures, low-frequency modal vibrations are easily excited, and limited , to achieve the effect of small friction, eliminate residual vibration and improve stability
Inactive Publication Date: 2018-12-11
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
[0002] Flexible structures are widely used in aerospace and industrial production fields. Compared with rigid structures, they have the advantages of light weight, low energy consumption, high efficiency, and flexible operation. However, flexible structures The natural frequency is low, and the low-frequency modal vibration is easily excited, which limits its application and development in certain fields.
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[0043] like Figure 1-Figure 8 As shown, a dual flexible beam control device directly driven by rotation and movement includes a flexible beam body part, a vibration detection part and a drive control part;
[0044] The flexible beam body part includes two flexible beams with the same size and material structure, which are respectively the first flexible beam 2 and the second flexible beam 10, and the two flexible beams are symmetrically installed on the mechanical device support along the horizontal direction. The fixed end of the mechanical device support is called the fixed end, and the other end is the free end.
[0045] The mechanical device support is connected to the output end of the direct drive rotary motor 5, and the piezoelectric sensor 3 and the acceleration sensor 1 are installed on the first and second flexible beams, and the installation positions and selected models of each flexible beam are exactly the same. On each flexible beam, the piezoelectric sensor 3 ...
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The invention discloses a rotating and moving direct drive double-flexible-beam control device and method. The rotating and moving direct drive double-flexible-beam control device includes a flexible beam body part, a vibration detection part and a drive control part, wherein the flexible beam body part includes two flexible beams; an acceleration sensor, a piezoelectric patch sensor and a piezoelectric driver are arranged on each flexible beam; the rotating and moving direct drive double-flexible-beam control device uses the piezoelectric patch sensors and the acceleration sensors to detect the vibration signals of the flexible beam structure; and a linear motor, a direct drive rotation motor and the piezoelectric drivers are taken as the actuator for restricting vibration. Compared with other vibration control devices, the rotating and moving direct drive double-flexible-beam control device has the advantages of being quick in response, being high in control accuracy, and being high in stability, and can quickly control vibration of the plane symmetric and axisymmetric modal of the double flexible beam.
Description
technical field [0001] The invention relates to the field of positioning and vibration control of flexible structures, in particular to a dual flexible beam control device and method directly driven by rotation and movement. Background technique [0002] Flexible structures are widely used in aerospace and industrial production fields. Compared with rigid structures, they have the advantages of light weight, low energy consumption, high efficiency, and flexible operation. However, flexible structures have low natural frequencies and low-frequency modal vibrations are easily excited. Limit its application and development in some fields. [0003] In recent years, the active vibration control of flexible structures has become the focus and hot topic of research in the world today. The acceleration sensor is light in weight, easy to install, and has a wide frequency band. Using the acceleration sensor feedback control can increase the active damping of the system in a wide freq...
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IPC IPC(8): G05D27/02
CPCG05D27/02
Inventor 邱志成王涛先
Owner SOUTH CHINA UNIV OF TECH