CN102629814A - Resonance tuning type large-output-force electromagnetic active actuator - Google Patents

Abstract

The invention aims at providing a resonance tuning type large-output-force electromagnetic active actuator which comprises an outer barrel, an end cover and a permanent magnet, a magnetic yoke, a center shaft, a coil, a coil rack, a shaft sleeve, a cushion plate and a sliding system installed in the outer barrel, wherein the sliding system comprises a spring, a positioning mechanism, pulleys, nuts and knobs, one end of the spring is fixed on the cushion plate, and the other end is installed on the positioning mechanism; the quantity of the pulleys is two, the positioning mechanism penetrates through the two pulleys so that the pulleys rotate around the passing shaft and the relative position of the two pulleys is unchanged, and each pulley is connected with the nut and the knob; the nuts and the knobs are located outside the outer barrel, and the pulleys are located inside the outer barrel; and a sliding way for the sliding system to move is arranged on the outer barrel. The resonance tuning type large-output-force electromagnetic active actuator has compact structure, large output force, high sensitivity and wide applicable frequency band.

Description

The big power output electromagnetic type of resonance tuner-type active actuators

Technical field

What the present invention relates to is the actuator in a kind of Active Vibration Control field.

Background technology

Actuator is called actuator again, is to accept control signal in the control system and be converted into control actions such as corresponding displacement or power to put on the device on the controlled system.Actuator can be divided into three kinds of pneumatic type, electrodynamic type and fluid pressure type actuators by the energy that is driven.Wherein pneumatic actuator and hydraulic actuator have that volume is big, frequency response is narrow, action shortcoming such as hysteresis.Be applied to actuator in the vibration active control system and should have that response is fast, the big characteristics of exerting oneself, so electromagnetic actuator is preferable selection.

Traditional electromagnetic actuator is that permanent magnet is fixed, thereby through the stressed drive push rod of the solenoid outwards power output of moving together, this kind method power output is less than the electromagnetic force size, and efficient is lower, and it is more consume energy, and the frequency range of application is restricted.In addition, traditional electromagnetic actuator has similar output characteristic in its correspondent frequency range of application, and power output is less.The patent No. is that the actuator that designs among the CN102011822A adopts solenoid to fix, and permanent magnet drives the mode of the outside power output of axis.More traditional actuator increases but owing to arrange that coil turn is limited on the efficient, if need to produce bigger implementation capacity only from increasing the angle of electric current, so heat is high, big energy-consuming.The patent No. increases solenoid quantity for CN1431757A has designed the electromagnetic actuator that " magnetic conductive board---high strong magnet " many group serial connections is fixed in push rod, and it is big that the exciting force of final actuator becomes.But in fact, need consume more electric energy and just can realize if obtain bigger exciting force.The patent No. is the application because of its pad of electric actuator that CN101710777 designed, utilizes resonance principle, it is reached under the low energy consumption just can reach the effect that is used as power more greatly.But the rigidity of spring leaf is fixed value, and having only when coil current could resonate under certain fixing frequency increases power output, so usable range receives limitation.

Summary of the invention

The object of the present invention is to provide compact conformation, the big power output electromagnetic type of the resonance tuner-type active actuators big, highly sensitive, that adapt to bandwidth of exerting oneself.

The objective of the invention is to realize like this:

The present invention's big power output electromagnetic type of tuner-type active actuators that resonates; Comprise urceolus, end cap and be installed in permanent magnet, magnetic conduction heel piece, axis, coil, bobbin, axle sleeve, the backing plate in the urceolus; It is characterized in that: also comprise sliding system, described sliding system comprises spring, detent mechanism, pulley, nut, knob, and spring one end is fixed on the backing plate, the other end is installed on the detent mechanism; Pulley has two; Detent mechanism passes two pulleys makes pulley constant with the relative position of the axle rotation of being passed and two pulleys, equal attaching nut of each pulley and knob, and nut, knob are positioned at the urceolus outside; Pulley is positioned at urceolus inside, and the slideway that sliding system moves is set on the urceolus; Permanent magnet places in the middle of two magnetic conduction heel pieces; Boss is set on the axis, and boss and axle sleeve that axis passes permanent magnet and magnetic conduction heel piece and axis are clipped in the middle permanent magnet and magnetic conduction heel piece, and bobbin is installed on the inner boss of urceolus; Coil has two to be installed on the bobbin; Groove also is set in the urceolus, and backing plate places the below of bobbin and can move along groove, and end cap is installed on the urceolus.

The present invention can also comprise:

1, described sliding system has four groups.

2, described outer tube inner wall is at the raised structures of pulley track position design in order to the support pulley.

Advantage of the present invention is: compact conformation of the present invention, big, highly sensitive, the adaptation bandwidth of exerting oneself.

Description of drawings

Fig. 1 is a rigidity governor motion principle schematic of the present invention;

Fig. 2 is a rigidity governor motion profile of the present invention;

Fig. 3 is a rigidity governor motion scale mark sketch map of the present invention;

Fig. 4 is a slide mechanism sketch map of the present invention;

Fig. 5 is a structural representation of the present invention;

Fig. 6 is that urceolus of the present invention cooperates the A-A sectional view with backing plate.

Embodiment

For example the present invention is done description in more detail below in conjunction with accompanying drawing:

In conjunction with Fig. 1～6, the present invention is a electromagnetic type active actuators.It is the important component part in the Active Vibration Control.The present invention mainly is made up of two parts, i.e. electromagnetic actuator and rigidity governor motion.Electromagnetic actuator is made up of magnetic conduction heel piece, permanent magnet, solenoid, axle sleeve etc. as the force mechanisms that goes out of this actuator.Control is exerted oneself, and the electrical current size changes big I in the solenoid 7 and 9 through regulating.The rigidity governor motion mainly is made up of spring, slide mechanism etc.Permanent magnet, magnetic conduction heel piece, pad and spring constitute mass-spring system in the actuator complete machine.Through the adjusting to spring position, thereby change its natural frequency, when its natural frequency is consistent with solenoid electrical current frequency, covibration takes place, the control that finally makes electromagnetic actuator and produced strengthens.Because system stiffness can be regulated through spring position, so the adjustable natural of mass-spring system, i.e. this invention can all can be played the effect that increases control in wider frequency range.The present invention compared with prior art has less energy consumption, and it is big to exert oneself, compact conformation, response rapidly, producing under the identical situation about being used as power characteristics such as power saving.Its technical scheme is following:

Technical scheme: of the present invention to go out force mechanisms be electromagnetic actuator; Its principle is: when two groups of coils 7 and 9 feed electric current in the opposite direction; Coil owing to energising and place produce by permanent magnet magnetic field produces the magnetic field force effect, coil is fixed by bobbin, so can be got by the active force reaction force of Newton's third law; Axis 3 axially moves, thereby produces the effect of power to external world.

Rigidity governor motion principle is as shown in Figure 1, and spring one end is fixed, and makes the orbiting motion of an end along outer wall, immobilizes all the time to guarantee spring length.If spring length is l, then spring free end satisfies equation group at the movement locus of outer wall:

$\left\{\begin{array}{c}{x}^2+{\mathrm{<figure-callout\; id="2"\; label="y"\; filenames="HDA0000153983410000031.png"\; state="\{\{state\}\}">y</figure-callout>}}^2=r^2\\ {(x-r)}^2+{\mathrm{<figure-callout\; id="2"\; label="y"\; filenames="HDA0000153983410000031.png"\; state="\{\{state\}\}">y</figure-callout>}}^2+{(z-l)}^2={\mathrm{<figure-callout\; id="2"\; label="l"\; filenames="HDA0000153983410000031.png"\; state="\{\{state\}\}">l</figure-callout>}}^2\end{array}\right.;$

When if spring is initial when parallel (and spring position) with the z axle; Its effective rigidity is k, then when spring free end behind the orbiting motion its effective rigidity

because

Fig. 2 is a rigidity governor motion cutaway view, and the rigidity governor motion is made up of four springs, slide mechanism and urceolus.The spring upper end is fixing; The lower end is connected on the slide mechanism, and governor motion part outer tube wall is provided with the slideway of four groups of hollow out designs, and this ramp design principle such as Fig. 1 explain; Four groups of slide mechanisms are housed respectively in the slideway; Thereby slide mechanism is slided along the outer tube wall track, indicate scale on the track, can make spring free end slide into the relevant position of required rigidity.The rigidity of a spring of every group of slide mechanism control; The global stiffness that spring produces is the summation of four springs; The rigidity of every spring can be regulated separately in this scheme, can certainly utilize corresponding member the adjusting that links together of four groups of mechanisms, to reduce the workload of independent adjusting.Fig. 3 is a rigidity governor motion scale mark sketch map.K shown in the figure; K1, k2 etc. are by formula

institute's value in actual production.Scale along slideway by finishing until slideway after preceding.

Shown in Fig. 4, sliding system is made up of pulley 15, nut 16, screw rod 17, knob 18, detent mechanism 19 among the present invention.Wherein detent mechanism 19 passes pulley on the one hand, makes the axle rotation of pulley to be passed, and guarantees that the relative position of two pulleys immobilizes, and connects the free end of spring 12 on the other hand, and spring is moved along with the sliding system motion.Pulley 15 connects with screw rod 17 and knob 18, along with the rotation of knob 18, and screw rod 17 and pulley 15 transmission together.Nut 16 is installed on the bolt 17, and when pulley 15 positions were the target location, nut 16 can be screwed pulley 15, avoided pulley to slide, thus the fixation of playing.On structure, the inwall of actuator urceolus is designed to raised structures in the pulley track position, in order to supporting pulley.

Fig. 5 is an actuator complete machine structure sketch map in the embodiment of the invention.This actuator comprises: permanent magnet 1, magnetic conduction heel piece 2, axis 3, bearing 4, end cap 5, connecting hole 6, coil 7 and 9, bobbin 8, axle sleeve 10, sliding system 11, spring 12, backing plate 13 and urceolus 14.

Coil 7 is fixed on the bobbin with coil 9 among Fig. 5, and when coil 7 and 9 fed reverse current, permanent magnet 13 received the effect of power and axial dipole field takes place.Backing plate 13 coupling stiffness governor motion and electromagnetic actuators.Backing plate 13 edge designs have raised structures and center to be run through by axis 3 and match with the groove of urceolus 14 relevant positions, see Fig. 6, make the backing plate 13 can be along groove vertical motion among a small circle.Need explanation,, can guarantee just that when the flexible direction in its position of its upper end edge stretches effective rigidity is that rigidity on the outer wall graduation mark is big or small when spring lower end position fixedly the time.But for the mass-spring system that itself and permanent magnet and yoke are formed, the coupling part backing plate is trace vibration up and down, and the change at spring inclination angle causes its effective rigidity to have trace to change, but the change amount is minimum, does not influence the stability of system.The base portion of actuator urceolus is connected with controlled system through bolt.

Claims (3)

1. the big power output electromagnetic type of tuner-type that resonates active actuators; Comprise urceolus, end cap and be installed in permanent magnet, magnetic conduction heel piece, axis, coil, bobbin, axle sleeve, the backing plate in the urceolus; It is characterized in that: also comprise sliding system, described sliding system comprises spring, detent mechanism, pulley, nut, knob, and spring one end is fixed on the backing plate, the other end is installed on the detent mechanism; Pulley has two; Detent mechanism passes two pulleys makes pulley constant with the relative position of the axle rotation of being passed and two pulleys, equal attaching nut of each pulley and knob, and nut, knob are positioned at the urceolus outside; Pulley is positioned at urceolus inside, and the slideway that sliding system moves is set on the urceolus; Permanent magnet places in the middle of two magnetic conduction heel pieces; Boss is set on the axis, and boss and axle sleeve that axis passes permanent magnet and magnetic conduction heel piece and axis are clipped in the middle permanent magnet and magnetic conduction heel piece, and bobbin is installed on the inner boss of urceolus; Coil has two to be installed on the bobbin; Groove also is set in the urceolus, and backing plate places the below of bobbin and can move along groove, and end cap is installed on the urceolus.

2. the big power output electromagnetic type of resonance tuner-type according to claim 1 active actuators, it is characterized in that: described sliding system has four groups.

3. the big power output electromagnetic type of resonance tuner-type according to claim 1 and 2 active actuators is characterized in that: described outer tube inner wall is at the raised structures of pulley track position design in order to the support pulley.

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