LT6206B - Device for contact zone diagnostics of piezoelectric motors - Google Patents

Device for contact zone diagnostics of piezoelectric motors Download PDF

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Publication number
LT6206B
LT6206B LT2013107A LT2013107A LT6206B LT 6206 B LT6206 B LT 6206B LT 2013107 A LT2013107 A LT 2013107A LT 2013107 A LT2013107 A LT 2013107A LT 6206 B LT6206 B LT 6206B
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LT
Lithuania
Prior art keywords
control unit
contact
piezo
piezoceramic
plate
Prior art date
Application number
LT2013107A
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Lithuanian (lt)
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LT2013107A (en
Inventor
Padgurskas
Bansevičius
Bubulis
Jurėnas
Andriušis
Žunda
Original Assignee
Aleksandro Stulginskio Universitetas
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Aleksandro Stulginskio Universitetas filed Critical Aleksandro Stulginskio Universitetas
Priority to LT2013107A priority Critical patent/LT6206B/en
Priority to PCT/LT2014/000004 priority patent/WO2015050422A1/en
Publication of LT2013107A publication Critical patent/LT2013107A/en
Publication of LT6206B publication Critical patent/LT6206B/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/34—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring roughness or irregularity of surfaces
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/0005—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
    • H02N2/005—Mechanical details, e.g. housings
    • H02N2/0065—Friction interface
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/0005—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
    • H02N2/0075—Electrical details, e.g. drive or control circuits or methods
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
    • H02N2/026—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors by pressing one or more vibrators against the driven body
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
    • H02N2/103—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors by pressing one or more vibrators against the rotor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/08—Detecting presence of flaws or irregularities

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The invention is attributed to the field of devices, specifically to the contact zone diagnostics of the controlled surface of piezoelectric motors. In order to simplify the design of the device, to reduce power consumption and to extend its functionality the piezoelectric device for the diagnostics of the contact area comprising the contact element (1) interacting with currently diagnosed surface (2), the frame (3) equipped with piezoceramic element (4) with electrodes, the high-frequency generator (5) and the control unit (6), in addition the device is equipped with an electric signal filter (7) and a comparator (11), and the piezoceramic element (4) is plate-shaped, which one side has a continuous electrode (8) and the other side of the electrode (9) is divided into two parts, to one of which is connected the high-frequency generator (5) through the control unit (6) and to the other - electric filter (7) which is connected to the control unit (6) through the comparator (11); and in addition - to the piezoceramic element (4) plate edge rigidly fixed contact element (1), which is clamped by the spring (10) to the moveable surface (2) together with the piezoceramic element. Besides that the contact element (1) can be flat, spherical or semi-spherical shape, and the diagnosed surface (2) can be rotated or slipped, and the contact element (1) is fixed on the geometric center of the piezoceramic plate (4) edge.

Description

Išradimas yra priskiriamas prietaisų sričiai, konkrečiai pjezoelektrinių variklių kontaktinės zonos kontroliuojamam paviršiui diagnozuoti.The invention relates to the field of devices, in particular to the controlled area of the contact area of piezo electric motors.

Yra žinomas trinties jėgos poveikio paviršiaus dilimo charakteristikų nustatymo įrenginys, susidedantis iš korpuso su dangčiu, kurio viduje įmontuotas velenas ir ant jo pritvirtintas judamasis bandinys. Dangtyje įmontuotas laikiklis prispaudžiamajam bandiniui tvirtinti bei spaustuvas, suteikiantis laikikliui su prispaudžiamuoju bandiniu valdomą apkrovą. Bandinio laikiklis įtvirtintas jo korpuse membranomis, kurios leidžia judėti tik kryptimi statmenai laikiklio korpuso išilginei ašiai. Laikiklio korpusas įrenginio dangtyje taip pat įtvirtintas membranomis, kurios leidžia laikiklio korpusui judėti tik jo išilginės ašies kryptimi, (žiūr. JAV paraišką patentui Nr. US 2013/0047699 Al, G01N 3/56,2013).A device for determining the wear characteristics of a frictional force surface is known, consisting of a housing with a lid having a shaft mounted thereon and a movable specimen mounted thereon. The cover has a mounting bracket for the specimen and a clamp that provides a controlled load for the bracket. The specimen holder is mounted in its housing by membranes which allow movement only in a direction perpendicular to the longitudinal axis of the holder body. The carrier body in the device cover is also secured with membranes which allow the carrier body to move only in the longitudinal axis thereof (see U.S. Patent Application US 2013/0047699 Al, G01N 3 / 56,2013).

Nurodytame įrenginyje kontaktinė paviršiaus zona gali būti diagnozuojama sukant tiriamą paviršių užsiduotą kryptimi, o tai mažina jo funkcionalumą.In a given device, the contact surface area can be diagnosed by rotating the test surface in the direction it is directed, which reduces its functionality.

Yra žinomas mikrojėgos matavimo įrenginys ir būdas jam realizuoti su paviršiaus sekimo zondu, kuriame kontaktinė paviršiaus zona gali būti diagnozuojama naudojant pjezokeraminnį jutiklį, fiksuojantį paviršiaus nelygumus. Įrenginį sudaro korpusas, kuriame įmontuotas slankiojantis strypas, pjezokeraminis jutiklis, valdymo blokas ir generatorius (žiūr. JAV patentąNr.7,685,733 B2, G 01 B 7/00, 2010).There is known a micro-force measuring device and a way to realize it with a surface tracking probe, in which the contact surface area can be diagnosed using a piezo-ceramic sensor that detects surface irregularities. The unit consists of a housing incorporating a sliding bar, piezo-ceramic sensor, control unit and generator (see U.S. Patent No. 7,685,733 B2, G 01 B 7/00, 2010).

Nurodytame prototipo įrenginyje naudojamas statmenos kontakto paviršiui jėgos matavimui skirtas pasyvus jutiklis, per kurį tiriamo paviršiaus kontaktinės zonos ne lygumų sukelti virpesiai fiksuojami pjezoelektrinio jutiklio pagalba ir po to analizuojami. Viso tiriamo paviršiaus diagnostikai būtina suteikti judesį tiriamam paviršiui ar matavimo įrenginiui ir sinchronizuoti visą matavimo sistemą, o tai daro konstrukciją sudėtingesnę.The specified prototype device employs a passive sensor for measuring the force perpendicular to the contact surface, through which non-smooth oscillations of the contact area of the test surface are recorded by a piezoelectric sensor and subsequently analyzed. In order to diagnose the entire test surface, it is necessary to provide motion to the test surface or measuring device and to synchronize the entire measuring system, which complicates the design.

Išradimo tikslas - įrenginio konstrukcijos supaprastinamas, energijos sąnaudų sumažinimas bei funkcinių galimybių išplėtimas.The object of the invention is to simplify the construction of the device, reduce the energy consumption and extend the functional possibilities.

Išradimo tikslas pasiekiamas tuo, kad pjezoelektriniame kontaktinės zonos diagnozavimo įrenginyje, susidedančiame iš kontaktinio elemento, sąveikaujančio su diagnozuojamu paviršiumi, korpuso, kuriame įmontuotas pjezokeraminis elementas su elektrodais, aukšto dažnio generatoriaus ir valdymo bloko, papildomai į įrenginį yra įmontuotas elektrinio signalo filtras ir komparatorius, o pjezokeraminis elementas yra plokštelės formos, kurios viena pusė turi ištisinį elektrodą, o kitos pusės elektrodas padalintas į dvi dalis, prie vienos iš kurių, per valdymo bloką, prijungtas generatorius, prie kitos - elektrinis filtras, kuris per komparatorių sujungtas su valdymo bloku, be to prie pjezokeraminio elemento briaunos standžiai pritvirtintas kontaktinis elementas, kuris kartu su pjezokeraminiu elementu per spyruoklę prispaustas prie diagnozuojamo paviršiaus. Be to, kontaktinis elementas gali būti plokščios, sferinės ar pusiau sferinės formos, diagnozuojamas paviršius gali būti sukamasis arba slenkamasis, o kontaktinis elementas ant pjezokeraminės plokštelės briaunos yra tvirtinamas jos geometriniame viduryje.The object of the present invention is achieved by providing a piezoelectric contact zone diagnostic device comprising a contact element interacting with the diagnostic surface, a housing comprising a piezo-ceramic element with electrodes, a high frequency generator and a control unit, and further comprising an electrical signal filter and a comparator. the piezo-ceramic element is in the form of a wafer having one continuous electrode on one side and two electrodes on the other, one generator connected via a control unit and an electrical filter connected to the control unit via a comparator a contact member rigidly attached to the edge of the piezo-ceramic member, which is pressed together with the piezo-ceramic member via a spring onto the surface to be diagnosed. In addition, the contact member may be flat, spherical or semi-spherical in shape, the diagnostic surface may be rotatable or sliding, and the contact member is mounted on the edge of the piezoceramic plate in its geometric center.

Išradimas paaiškinamas brėžiniais.The invention is explained in the drawings.

figūroje pavaizduota principinė įrenginio schema.Figure 1 shows a schematic diagram of the device.

figūroje pavaizduota sukamo diagnozuojamo paviršius atvejis.Figure 1 shows a case of a rotating diagnostic surface.

fig. pavaizduota slenkamojo diagnozuojamo paviršius atvejis. Įrenginį sudaro kontaktinis elementas 1, kontaktuojantis su diagnozuojamu paviršiumi 2, korpusas 3, kuriame yra įtvirtintas plokštelės formos pjezokeraminis elementas 4, generatorius 5, valdymo blokas 6, elektrinis filtras 7. Ant pjezokeraminio elemento 4 yra ištisinis elektrodas 8, bei padalintas elektrodas 9 . Spyruoklė 10, skirta pjezokeraminiam elementui 4 kartu su kontaktiniu elementu 1 prispausti prie diagnozuojamo paviršiaus 2, o komparatorius 11, skirtas signalų gautų iš elektrinio filtro 7 ir užsiduoto iš anksto kalibruoto signalo, sulyginimui.FIG. illustrates the case of a scrollable diagnostic surface. The device comprises a contact element 1, which contacts the diagnostic surface 2, a housing 3 containing a plate-shaped piezo-ceramic element 4, a generator 5, a control unit 6, an electric filter 7. The piezo-ceramic element 4 has a continuous electrode 8 and a split electrode 9. A spring 10 for pressing the piezoceramic element 4 together with a contact element 1 on the diagnostic surface 2 and a comparator 11 for aligning the signals received from the electric filter 7 with the pre-calibrated signal.

Diagnozavimas atliekamas taip.Diagnosis is done as follows.

Iš generatoriaus 5 aukšto dažnio elektrinis signalas per valdymo bloką 6 paduodamas j pjezokeraminio elemento 4 padalinto elektrodo 9 vieną iš dalių, skirtą pjezokeraminio elemento mechaninių virpesių sužadinimui. Tokiu būdu, pjezokeraminiame elemente 1 sužadinami mechaniniai kryptingi virpesiai (atvirkštinis pjezoefektas), ko rezultate, per kontaktinį elementą 1, realizuojamas elipsinis mikrojudesys, kuris kontaktuojant su paviršiumi perduoda jam kryptingą judesį. Pjezokeraminio elemento 4 pri spaudimo prie judamo paviršiaus 2 jėga reguliuojama prispaudimo spyruokle 10. Diagnozuojamas paviršius 2 ( diskas arba slankiklis, žiūr. 2 fig. ir 3 fig.), per kontaktinį elementą 1 paviršiaus ne lygumų sužadinančius mikrovirpesius (tiesioginis pjezoefektas) perduoda per pjezokeraminio elemento 4 ištisinio elektrodo 9 sužadinamąją dalį, kurios signalas patenka j elektrinį filtrą 7, kuriame nufiltruojamas generatoriaus sužadinamas generuojamas signalas. Iš elektrinio filtro 7 gautas signalas patenka į komparatorių, kuriame sulyginamas su iš anksto užsiduotu kalibruotu signalu. Komparatoriaus išėjime gaunamas signalas, kuris nusako diagnozuojamo paviršiaus 2 nelygumus ir jo būklę, bei leidžia valdymo bloko 6 pagalba stabilizuoti judesio parametrus.From the generator 5, a high frequency electrical signal is fed through a control unit 6 to one of the parts of the split electrode 9 of the piezo-ceramic element 4 for excitation of the mechanical vibrations of the piezo-ceramic element. Thus, in the piezo-ceramic element 1, mechanical directional oscillations (reverse piezo effect) are induced, which results in the elliptical micro-motion being realized through the contact element 1, which, in contact with the surface, transmits to it a directional motion. The force of the piezoceramic element 4 against the movable surface 2 is controlled by a clamping spring 10. The diagnosed surface 2 (disk or slider, see Figs. 2 and 3) transmits non-smooth excitatory micro-vibrations (direct piezo effect) of the contact element 1 via the piezoceramic an excitation portion of the continuous electrode 9 of the element 4, the signal of which passes to the electric filter 7, which filters the generated signal generated by the generator. The signal from the electric filter 7 passes to a comparator where it is compared to a pre-set calibrated signal. At the output of the comparator, a signal is received which defines the irregularities of the diagnostic surface 2 and its condition and allows the control unit 6 to stabilize the motion parameters.

Palyginus su prototipu, nauja konstrukcinių elementų visuma dėl to, kad pjezokeraminio elemento vienas iš elektrodų yra padalintas j dvi dalis t.y. viena dalis yra skirta mechaninių virpesių sužadinimui, o kita dalis skirta mechaninių mikrojudesių keitimui j elektrinį signalą, o tai leidžia sukurti diagnozuojamo paviršiaus judesį ir tuo pačiu diagnozuoti judamo paviršiaus nelygumus, kas supaprastina konstrukciją, sumažina energetines sąnaudas bei išplečia funkcines galimybes.Compared to the prototype, the new set of structural elements is due to the fact that one of the electrodes of the piezo-ceramic element is divided into two parts, i.e. one part is intended to excite mechanical vibrations and the other part to convert mechanical micro-motions to electrical signal, which allows to create the motion of the diagnosed surface and at the same time to diagnose the irregularities of the moving surface.

Claims (4)

Išradimo apibrėžtisDefinition of the Invention 1. Pjezoelektrinis kontaktinės zonos diagnozavimo įrenginys, susidedantis iš kontaktinio elemento sąveikaujančio su diagnozuojamu paviršiumi, korpuso, kuriame įmontuotas pjezokeraminis elementas su elektrodais, aukšto dažnio generatorius ir valdymo blokas besiskiriantis tuo, kad j įrenginį yra įmontuotas elektrinio signalo filtras ir komparatorius, o pjezokeraminis elementas yra plokštelės formos, kurios viena pusė turi ištisinį elektrodą, o kitos pusės elektrodas padalintas į dvi dalis, prie vienos iš kurių per valdymo bloką prijungtas generatorius, prie kitos - elektrinis filtras, kuris per komparatorių sujungtas su valdymo bloku, be to, prie pjezokeraminio elemento - plokštelės briaunos standžiai pritvirtintas kontaktinis elementas, kuris kartu su pjezokeraminiu elementu per spyruoklę prispaustas prie judamo paviršiaus.1. A piezoelectric contact zone diagnostic device comprising a contact element interacting with the diagnostic surface, a housing having an integrated piezo-ceramic element with electrodes, a high frequency generator and a control unit characterized in that the device has an electrical signal filter and a comparator, and a plate having one continuous electrode on one side and two electrodes on the other, one of which is connected to a generator via the control unit and the other to an electric filter connected to the control unit via a comparator and to a piezo-ceramic element a contact piece rigidly attached to the edge of the plate, which, together with a piezo-ceramic member, is pressed against a movable surface through a spring. 2. Pjezoelektrinis kontaktinės zonos diagnozavimo įrenginys pagal 1 punktą b esiskiriantis tuo, kad kontaktinis elementas gali būti plokščios, sferinės ar pusiau sferinės formos.Piezoelectric contact zone diagnostic device according to claim 1 b, characterized in that the contact element can be flat, spherical or semi-spherical. 3. Pjezoelektrinis kontaktinės zonos diagnozavimo įrenginys pagal 1 punktą b esiskiriantis tuo, kad diagnozuojamas paviršius gali būti sukamasis arba slenkamasis.3. Piezoelectric contact zone diagnostic device according to claim 1, characterized in that the diagnostic surface can be rotatable or sliding. 4. Pjezoelektrinis kontaktinės zonos diagnozavimo įrenginys pagal 1 punktą b esiskiriantis tuo, kad kontaktinis elementas ant pjezokeraminės plokštelės briaunos yra tvirtinamas jos geometriniame viduryje.4. Piezoelectric contact zone diagnostic device according to claim 1, characterized in that the contact element is mounted on the edge of the piezo-ceramic plate in its geometric center.
LT2013107A 2013-10-04 2013-10-04 Device for contact zone diagnostics of piezoelectric motors LT6206B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
LT2013107A LT6206B (en) 2013-10-04 2013-10-04 Device for contact zone diagnostics of piezoelectric motors
PCT/LT2014/000004 WO2015050422A1 (en) 2013-10-04 2014-03-18 Device for contact zone diagnostics of piezoelectric motors

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Application Number Priority Date Filing Date Title
LT2013107A LT6206B (en) 2013-10-04 2013-10-04 Device for contact zone diagnostics of piezoelectric motors

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LT6206B true LT6206B (en) 2015-08-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210048323A1 (en) * 2018-01-30 2021-02-18 Pi Ceramic Gmbh Ultrasonic transducer with a piezoceramic and method for producing an ultrasonic transducer of this kind

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109951101B (en) * 2019-04-09 2020-03-06 哈尔滨工业大学 Piezoelectric-driven ultra-precise four-degree-of-freedom positioning and posture adjusting mechanism and excitation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7685733B2 (en) 2005-12-02 2010-03-30 Riken Micro force measurement device, micro force measurement method, and micro surface shape measurement probe
US20130047699A1 (en) 2008-02-29 2013-02-28 Juozas Padgurskas Device for measuring the influence of friction force on wear characteristics of a material surface with high frequency loading force

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
DE19945042C2 (en) * 1999-06-30 2002-12-19 Pi Ceramic Gmbh Keramische Tec Piezoelectric drive, in particular piezoelectric motor and circuit arrangement for operating a piezoelectric motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7685733B2 (en) 2005-12-02 2010-03-30 Riken Micro force measurement device, micro force measurement method, and micro surface shape measurement probe
US20130047699A1 (en) 2008-02-29 2013-02-28 Juozas Padgurskas Device for measuring the influence of friction force on wear characteristics of a material surface with high frequency loading force

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210048323A1 (en) * 2018-01-30 2021-02-18 Pi Ceramic Gmbh Ultrasonic transducer with a piezoceramic and method for producing an ultrasonic transducer of this kind

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WO2015050422A1 (en) 2015-04-09
LT2013107A (en) 2015-04-27

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