CN101716569B - Device for performing double-end control on mass block - Google Patents
Device for performing double-end control on mass block Download PDFInfo
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- CN101716569B CN101716569B CN2009102509299A CN200910250929A CN101716569B CN 101716569 B CN101716569 B CN 101716569B CN 2009102509299 A CN2009102509299 A CN 2009102509299A CN 200910250929 A CN200910250929 A CN 200910250929A CN 101716569 B CN101716569 B CN 101716569B
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Abstract
The invention relates to a device for performing double-end control on a mass block, which mainly comprises a fulcrum bar end 1, a rolling pair 2, a lever 3, a shell end 4, a mass block 5 and a connecting rod 6, wherein the mass block 5 is connected to one end of the lever 3 through the connecting rod 6; the force and displacement of the mass block 5 are changed and distributed by the lever 3; by taking the fulcrum bar end 1 as a relatively fixed point, when the mass block makes side-to-side movement, the side-to-side movement is generated at the position of the shell end 4 under the transfer action of the lever 3, and simultaneously, inertia force generated by the movement of the mass block 5 can also be transferred to the shell end 4; and similarly, by taking the shell end 4 as the relatively fixed point, the side-to-side displacement and generated force of the mass block 5 can be transferred to the fulcrum bar end 1. The device overcomes the defect that the mass block only has one control port, realizes the characteristic of free connection of two ends which are the same as those of elastic and damping elements, and has wide application prospect in vibration systems.
Description
Technical field
The present invention relates to the inertia mass element in the vibrational system, refer in particular to by mass being carried out two the inertia mass devices of controlling port that have of double-end control realization.
Background technology
Mechanical elements such as the inertia mass in the vibrational system, damping and elasticity can exert an influence to the dynamics of system, therefore, can realize the vibration control effect of expecting by three kinds of mechanical elements of reasonable disposition.Elements such as the spring of using on vibrational system at present, damper all have the port of controlling of two power and displacement input and output.But for this common inertia mass element of mass, this controls port freely but to have only himself.Vibrational system analyze and design in, generally the earth point in mass motional inertia space (power and displacement are zero reference point) is considered as its another virtual port of controlling, to control the power and the displacement that apply on the port all be zero but this is virtual.
Because mass virtual controlled the constraint of port ground connection, can not be connected freely with damping element as elasticity in vibrational system.For example, spring and damper can the mutual parallel operations in two ends, if but mass be connected in parallel on the two ends of spring, damper then can cause spring and the damper operational failure.Therefore, when designing the vibration control system that is connected to form by vibrating elements, can only consider that mass is connected an end of other vibrating elements.In addition, the inertia mass of mass equates with its gravitational mass in the vibrational system, when the inertia mass of utilizing mass is regulated and control vibration performance, usually needs to increase the total quality of vibrational system.
Summary of the invention
Purpose of the present invention is exactly the shortcoming that connects application process at mass in the vibrational system, invent a kind of device that mass is carried out double-end control, on the one hand freely control port for power of mass increase and displacement input and output, make to have two masses of freely controlling port serial or parallel connection arbitrarily in vibrational system, to produce how new vibration control syndeton; Use the mass of less actual gravitational mass on the other hand, control the bigger inertia mass of realization between the port at two, to reduce the total quality of vibrational system.
For achieving the above object, the present invention adopts following technical scheme:
A kind of lever that adopts carries out the device of double-end control to mass, is mainly constituted by strut ends 1, rolling pair 2, lever 3, shell ends 4, mass 5, connecting rod 6 etc.
The present invention realizes to mass that the method for double-end control is achieved in that mass is connected to an end of lever by connecting rod, by lever conversion and distribution carried out in the power and the displacement of mass.With strut ends 1 is the relative fixed point, when the mass side-to-side movement, by the transfer function of lever, produces side-to-side movement at shell ends 4 places, and the inertia force that mass motion simultaneously produces also can be delivered to shell ends 4.Similarly, be that relative fixed is put and analyzed with shell ends 4, the left and right displacement of mass and the power of generation all can be delivered on the strut ends 1.Like this, this controls the mass of port originally only to have himself, realized double-end control by the lever transmission, has just realized the port of controlling of two real power and displacement input and output.The present invention has realized a kind of two inertia mass devices of controlling port really that have, can be the same mutual with spring, damper also, connection such as series connection, can realize multiple vibration control syndeton with novel performance.
The present invention is with the mass of less actual gravitational mass, the double-end control device of realizing big inertia mass is achieved in that the total length of lever 3 comprises two parts: link to each other with the strut ends length c of part of balance pivot, the balance pivot length d partly that links to each other with connecting rod.Design c＞d among the present invention.By Newton's second law as can be known, for gravitational mass is the mass of m, exciting force F (just himself with motional inertia space earth point between relative power) effect under, with acceleration a (relative acceleration between himself and the motional inertia space earth point just) motion, three's pass is F=ma.In the present invention, if ignore the influence of factors such as friction, operating-controlling mechanism quality, driving error, under the effect of the relative exciting force F between strut ends 1 and the shell ends 4, the relative acceleration between the two ends is a.c/d, and the pass between quality, power, the acceleration is F=(c/d) .ma.Therefore, be that the mass of m has been realized equivalent inertia mass (c/d) .m between two ports in gravitational mass under the double-end control condition.Because c＞d, inertia mass of the present invention has realized the amplification to gravitational mass, thereby has realized obtaining bigger inertia mass with the mass of less actual gravitational mass.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure, 1-strut ends, 2-rolling pair, 3-lever, 4-shell ends, 5-mass, 6-connecting rod.
The specific embodiment
Below in conjunction with the drawings and specific embodiments patent of the present invention is described in further detail.
Figure 1 shows that example, effect by lever transmission mechanism, inertia force to mass carries out conversion and distribution, has realized that two of mass control port, and this device has realized that also two are controlled inertia mass between the port to the amplification of the actual gravitational mass of mass.
With reference to Fig. 1, involved in the present invention a kind of mass is carried out the device of double-end control, mainly constitute by strut ends 1, rolling pair 2, lever 3, shell ends 4, mass 5, connecting rod 6 etc.Its relative motion relation is: with strut ends 1 is the relative fixed point, when mass 5 moves leftwards and rightwards, produces corresponding side-to-side movement in shell ends 4, and the inertia force that mass motion simultaneously produces also can be delivered on the shell ends 4.Similarly, be that relative fixed is put and analyzed with shell ends 4, the left and right displacement of mass and the power of generation also can be delivered on the strut ends 1, thereby realize the port of controlling of two real power and displacement input and output.
Because the total length of lever 3 comprises two parts among the present invention: link to each other with the strut ends length of part of balance pivot is c, and the balance pivot length partly that links to each other with connecting rod is d.Design c＞d among the present invention.Therefore can control the bigger equivalent inertia mass of realization between the port at two with the mass of less actual gravitational mass.The present invention has overcome mass to be had only himself this controls the shortcoming of port, has realized the amplification of inertia mass to gravitational mass, has broad application prospects in vibrational system.
Claims (2)
1. device that mass is carried out double-end control, mainly constitute by strut ends (1), rolling pair (2), lever (3), shell ends (4), mass (5), connecting rod (6), it is characterized in that: the total length of lever (3) comprises two parts: balance pivot link to each other with strut ends the part length c, link to each other with the connecting rod length d of part of balance pivot, and length c is greater than length d; Mass (5) is connected to an end of lever (3) by connecting rod (6), by lever (3) conversion and distribution have been carried out in the power and the displacement of mass (5), with strut ends (1) is the relative fixed point, when mass (5) side-to-side movement, transfer function by lever (3), locate to produce side-to-side movement in shell ends (4), the inertia force that mass (5) motion simultaneously produces also can be delivered to shell ends (4); Equally, with shell ends (4) is the relative fixed point, the left and right displacement of mass (5) and the power of generation all can be delivered on the strut ends (1), like this, this controls the mass (5) of port originally only to have himself, realize double-end control by lever (3) transmission, thereby realized the port of controlling of two real power and displacement input and output.
2. a kind of device that mass is carried out double-end control according to claim 1, it is characterized in that: it is can be the same with spring, damper parallel with one another or be connected in series to have two inertia mass devices of controlling port really, realizes multiple vibration control syndeton with novel performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102509299A CN101716569B (en) | 2009-12-21 | 2009-12-21 | Device for performing double-end control on mass block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102509299A CN101716569B (en) | 2009-12-21 | 2009-12-21 | Device for performing double-end control on mass block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101716569A CN101716569A (en) | 2010-06-02 |
| CN101716569B true CN101716569B (en) | 2011-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102509299A Expired - Fee Related CN101716569B (en) | 2009-12-21 | 2009-12-21 | Device for performing double-end control on mass block |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3395568A (en) * | 1963-08-10 | 1968-08-06 | Lodige Alois | Arrangement for automatically closing energy passage systems, especially air passages |
| CN2187788Y (en) * | 1994-02-05 | 1995-01-18 | 北京理工大学 | Sourceless non-metal optic fibre vibration sensor |
| CN1736619A (en) * | 2005-07-28 | 2006-02-22 | 樊振江 | Motor vibration exciter |
| CN101285847A (en) * | 2007-04-11 | 2008-10-15 | 中国科学院半导体研究所 | Temperature insensitive optical fibre grating acceleration sensor |
-
2009
- 2009-12-21 CN CN2009102509299A patent/CN101716569B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3395568A (en) * | 1963-08-10 | 1968-08-06 | Lodige Alois | Arrangement for automatically closing energy passage systems, especially air passages |
| CN2187788Y (en) * | 1994-02-05 | 1995-01-18 | 北京理工大学 | Sourceless non-metal optic fibre vibration sensor |
| CN1736619A (en) * | 2005-07-28 | 2006-02-22 | 樊振江 | Motor vibration exciter |
| CN101285847A (en) * | 2007-04-11 | 2008-10-15 | 中国科学院半导体研究所 | Temperature insensitive optical fibre grating acceleration sensor |
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| Publication number | Publication date |
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| CN101716569A (en) | 2010-06-02 |
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Granted publication date: 20110202 Termination date: 20191221 |