CN110629384A - Piezoelectric needle selector perception execution integrated state detection system - Google Patents
Piezoelectric needle selector perception execution integrated state detection system Download PDFInfo
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- CN110629384A CN110629384A CN201910949780.7A CN201910949780A CN110629384A CN 110629384 A CN110629384 A CN 110629384A CN 201910949780 A CN201910949780 A CN 201910949780A CN 110629384 A CN110629384 A CN 110629384A
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- 238000001514 detection method Methods 0.000 title claims abstract description 50
- 230000008447 perception Effects 0.000 title claims description 7
- 239000000919 ceramic Substances 0.000 claims abstract description 111
- 238000009940 knitting Methods 0.000 claims description 14
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 11
- 239000004917 carbon fiber Substances 0.000 claims description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 230000008092 positive effect Effects 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 claims description 2
- 238000004364 calculation method Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 230000002457 bidirectional effect Effects 0.000 abstract description 7
- 238000010304 firing Methods 0.000 abstract description 6
- 239000004744 fabric Substances 0.000 abstract description 5
- 238000011897 real-time detection Methods 0.000 abstract description 4
- 235000012431 wafers Nutrition 0.000 description 20
- 239000000306 component Substances 0.000 description 10
- 230000006870 function Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
- D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
- D04B15/78—Electrical devices
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
Abstract
The invention discloses a sensing and execution integrated state detection system for a piezoelectric needle selector, and relates to the technical field of detection of the working state of the needle selector. The invention comprises a piezoelectric ceramic piece, a baffle, a needle selector tool bit and a control circuit board; the piezoelectric ceramic piece can be used as an actuating element and a sensing element; the control circuit board comprises a piezoelectric ceramic piece driving circuit and a vibration signal detection circuit. The piezoelectric ceramic plate can be used as an actuating element and a sensing element through the bidirectional effect of the piezoelectric ceramic plate, so that the utilization efficiency of the piezoelectric ceramic plate is improved, and excessive components are prevented from being added into the needle selector; by detecting the electric signal generated by the piezoelectric ceramic, whether the frequency and the amplitude of the detected electric signal are within a normal range or not is judged, the real-time detection of the working state of the piezoelectric needle selector is realized, and serious consequences such as fabric flaws, machine firing pins and the like caused by unstable or invalid working state of the needle selector are greatly avoided.
Description
Technical Field
The invention belongs to the technical field of detection of working states of needle selectors, and particularly relates to a sensing and execution integrated state detection system for a piezoelectric needle selector.
Background
The piezoelectric needle selector is used as a core component of the jacquard and as a driving component of a jacquard needle, and in the jacquard process, according to a jacquard selection control command and a pattern file, the needle selector is in a stable working state: and rapidly jumping between the upper limit position and the lower limit position.
When the working state of the needle selector is unstable, knitting abnormality is often caused, defects of knitting materials and product scrapping are caused, and mechanical failure is even caused by firing pins or broken needles. The piezoelectric needle selector can cause the piezoelectric coefficient to change due to the aging phenomenon of the piezoelectric wafer when the piezoelectric needle selector works for a long time. Even the laminated structure begins to peel off, and the working state of the piezoelectric wafer is abnormal, so that the cutter head cannot work normally, and the jacquard state is influenced.
The conventional knitting needle selector does not have the fault detection functions of state keeping and position jumping, the knitting defects and the accidents are difficult to be pre-warned, and the piezoelectric needle selector perception and execution integrated state detection system is provided to solve the problems.
Disclosure of Invention
The invention aims to provide a sensing and execution integrated state detection system of a piezoelectric needle selector, which can be used as an execution element and a sensing element in the piezoelectric needle selector by fully utilizing the bidirectional effect of a piezoelectric ceramic piece under the condition of not additionally adding a sensor, and a vibration signal detection circuit detects and conditions an electric signal generated by the piezoelectric ceramic piece to acquire whether the action state of the piezoelectric needle selector is normal or not, so that the problem that the working state of the needle selector cannot be subjected to fault detection when the conventional piezoelectric needle selector works, and the knitting defect is caused is solved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a piezoelectric needle selector perception execution integrated state detection system, which comprises a piezoelectric needle selector, wherein the piezoelectric needle selector comprises a piezoelectric ceramic piece, a baffle, a needle selector tool bit and a control circuit board; the piezoelectric ceramic piece is a driving element of a needle selector tool bit and a detection element of a vibration signal of the needle selector tool bit colliding with the baffle; the control circuit board comprises a piezoelectric ceramic piece driving circuit and a vibration signal detection circuit; the piezoelectric ceramic piece driving circuit controls the piezoelectric ceramic piece to bend up and down, and the piezoelectric ceramic piece is an actuating element and drives the needle selector tool bit to swing up and down; the vibration signal detection circuit detects and conditions the electric signal generated by the piezoelectric ceramic plate to obtain whether the action state of the piezoelectric needle selector is normal or not, so that the real-time detection of the working state of the piezoelectric needle selector is realized, and serious consequences such as fabric flaw, machine firing pin and the like caused by unstable or invalid working state of the needle selector can be greatly avoided in engineering.
Further, the piezoelectric ceramic piece detects vibration signals generated by collision of a tool bit of the needle selector and the baffle and vibration signals generated by collision of various knitting needles striking the tool bit and the baffle through a piezoelectric positive effect principle; the force generated by vibration is applied to the piezoelectric ceramic piece, and the piezoelectric ceramic piece generates an electric signal; the piezoelectric ceramic piece driving circuit drives and controls the piezoelectric ceramic piece through a piezoelectric inverse effect principle; when the piezoelectric ceramic piece driving circuit outputs positive and negative voltages, the positive and negative voltages are applied to the piezoelectric ceramic piece, the characteristics of the piezoelectric ceramic piece are equivalent to capacitance and are bent up and down, and under the condition that no sensor is additionally added, the bidirectional effect of the piezoelectric ceramic piece is fully utilized, so that the piezoelectric ceramic piece driving circuit can be used as an actuating element and a sensing element in a piezoelectric needle selector, and the utilization efficiency of the piezoelectric ceramic piece is improved.
Furthermore, the vibration signal detection circuit is electrically connected with the piezoelectric ceramic plate to obtain the electric signals generated by the reaction force generated by the collision of the needle selector bit with the baffle and the reaction force generated by the collision of various knitting needles with the baffle; the vibration signal detection circuit carries out filtering, amplification, calculation and analysis processing on the obtained electric signal to obtain the action state of the piezoelectric needle selector.
Furthermore, the piezoelectric ceramic piece is of a laminated structure and comprises an upper piezoelectric wafer, a lower piezoelectric wafer and a middle high carbon fiber base layer; the upper layer piezoelectric wafer and the lower layer piezoelectric wafer are symmetrically adhered to the upper surface and the lower surface of the middle high carbon fiber base layer through conductive adhesives; the piezoelectric ceramic chip is fixedly arranged on a fixing component, and electrodes are led out from the tail ends of the upper piezoelectric chip, the lower piezoelectric chip and the middle high carbon fiber base layer; the fixing component is provided with three conductive columns respectively corresponding to the electrodes, and the three conductive columns are inserted on the piezoelectric needle selector driving plate to increase the fixing stability of the piezoelectric needle selector driving plate; the fixing component is provided with a fixing convex column, and the piezoelectric ceramic plate is fixed on the needle selector shell through the fixing convex column.
The working method of the integrated state detection system comprises the following steps:
SS 01: the piezoelectric ceramic piece driving circuit drives and controls the piezoelectric ceramic piece to bend, and the piezoelectric ceramic piece drives the needle selector tool bit to swing up and down;
SS 02: when the needle selector tool bit swings up and down and collides with the baffle, the generated collision force is reacted on the piezoelectric ceramic piece, the force generated by the collision between various knitting needle striking tool bits and the baffle is reacted on the piezoelectric ceramic piece, and the piezoelectric ceramic piece generates an electric signal according to the piezoelectric positive effect principle;
SS 03: the vibration signal detection circuit filters, amplifies, calculates and analyzes the electric signal to obtain whether the action state of the piezoelectric needle selector is normal or not.
The invention has the following beneficial effects:
1. under the condition of not additionally adding a sensor, the bidirectional effect of the piezoelectric ceramic piece is fully utilized, so that the piezoelectric ceramic piece can be used as an actuating element and a sensing element in the piezoelectric needle selector, the utilization efficiency of the piezoelectric ceramic piece is improved, and excessive components are prevented from being added into the needle selector;
2. the invention can detect the coupling signals of the piezoelectric ceramics as the two stages of the actuating element and the sensing element, and judge whether the frequency and the amplitude of the detected electric signals are in the normal range, thereby realizing the real-time detection of the working state of the piezoelectric needle selector and greatly avoiding the serious consequences of fabric flaw, machine firing pin and the like caused by the unstable or invalid working state of the needle selector.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a partial structure of a piezoelectric needle selector according to the present invention;
FIG. 2 is a top view of the partial structure of FIG. 1;
FIG. 3 is a schematic view of a partial structure of a piezoelectric ceramic plate according to the present invention;
FIG. 4 is a schematic diagram of a vibration signal detection circuit according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "end", "middle", "inner", "side", "end", "bottom", and the like, indicate orientations or positional relationships and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In one embodiment, please refer to FIGS. 1-4:
the invention relates to a piezoelectric needle selector perception execution integrated state detection system, which comprises a piezoelectric needle selector, wherein the piezoelectric needle selector comprises a piezoelectric ceramic piece, a baffle, a needle selector tool bit 1 and a control circuit board; the piezoelectric ceramic piece is a driving element of the needle selector tool bit 1, and a detection element of a vibration signal of the needle selector tool bit 1 colliding with the baffle, as shown in fig. 1-3, the piezoelectric ceramic piece is a laminated structure 3, and the laminated structure 3 of the piezoelectric ceramic piece comprises an upper piezoelectric chip 12, a lower piezoelectric chip 14 and a middle high carbon fiber base layer 13; the upper piezoelectric wafer 12 and the lower piezoelectric wafer 14 are symmetrically adhered to the upper surface and the lower surface of the middle high carbon fiber base layer 13 through conductive adhesives; the piezoelectric ceramic plate is fixedly arranged on a fixing component 5, and electrodes are led out from the tail ends of the upper piezoelectric wafer 12, the lower piezoelectric wafer 14 and the middle high carbon fiber base layer 13; the fixing component 5 is provided with three conductive columns 8, 9 and 10 which respectively correspond to the electrodes, and the three conductive columns 8, 9 and 10 are inserted on the piezoelectric needle selector driving plate to increase the fixing stability of the piezoelectric needle selector driving plate; the fixing component 5 is provided with fixing convex columns 4, 6, 7 and 11, the fixing component 5 fixes the piezoelectric ceramic plate on the needle selector shell through the fixing convex columns 4, 6, 7 and 11, the upper end and the lower end of the tooth groove of the baffle 2 are upper limit and lower limit of the motion of the needle selector tool bit 1, and the fixing of the whole device in the needle selector shell can be equivalent to a simple cantilever beam model.
Preferably, the control circuit board comprises a piezoelectric ceramic piece driving circuit and a vibration signal detection circuit; the piezoelectric ceramic piece driving circuit controls the piezoelectric ceramic piece to bend up and down, and the piezoelectric ceramic piece is an actuating element and drives the needle selector tool bit 1 to swing up and down; the vibration signal detection circuit detects and conditions the electric signal generated by the piezoelectric ceramic plate to obtain whether the action state of the piezoelectric needle selector is normal or not, so that the real-time detection of the working state of the piezoelectric needle selector is realized, and the serious consequences such as fabric flaw, machine firing pin and the like caused by the unstable or invalid working state of the needle selector can be greatly avoided in engineering.
Preferably, the piezoelectric ceramic piece detects vibration signals generated by collision of the needle selector bit 1 and the baffle and vibration signals generated by collision of various knitting needle impact bits and the baffle through a piezoelectric positive effect principle; the force generated by vibration is applied to the piezoelectric ceramic piece, and the piezoelectric ceramic piece generates an electric signal; the piezoelectric ceramic piece driving circuit drives and controls the piezoelectric ceramic piece through a piezoelectric inverse effect principle; when the piezoelectric ceramic piece driving circuit outputs positive and negative voltages, the positive and negative voltages are applied to the piezoelectric ceramic piece, the characteristics of the piezoelectric ceramic piece are equivalent to capacitance and are bent up and down, and under the condition that a sensor is not additionally added, the bidirectional effect of the piezoelectric ceramic piece is fully utilized, so that the piezoelectric ceramic piece driving circuit can be used as an actuating element and a sensing element in a piezoelectric needle selector, and the utilization efficiency of the piezoelectric ceramic piece is improved.
Preferably, the vibration signal detection circuit is electrically connected with the piezoelectric ceramic piece to obtain an electric signal generated by the reaction force generated by the collision of the needle selector bit 1 with the baffle and the reaction force generated by the collision of various knitting needles with the baffle; the vibration signal detection circuit filters, amplifies, calculates and analyzes the obtained electric signal to obtain the action state of the piezoelectric needle selector, as shown in fig. 4, an RLC oscillation circuit is composed of a resistor R1, a capacitor C1 and an inductor L1 which are connected in series, the RLC oscillation circuit is connected in parallel with the capacitor C0 to form an equivalent circuit of the piezoelectric sensor, a resistor R2 is connected in series behind the equivalent circuit according to the specific piezoelectric effect of the piezoelectric ceramic, and the working state of the piezoelectric sensor is judged by detecting the current change of the piezoelectric ceramic in real time.
The working method of the piezoelectric needle selector sensing and execution integrated state detection system comprises the following steps:
SS 01: the piezoelectric ceramic piece driving circuit drives and controls the piezoelectric ceramic piece to bend, and the piezoelectric ceramic piece drives the needle selector tool bit 1 to swing up and down;
SS 02: when the needle selector bit 1 swings up and down to collide with the baffle, the generated collision force is reacted on the piezoelectric ceramic piece, the force generated by the collision between the various knitting needles and the baffle is reacted on the piezoelectric ceramic piece, and the piezoelectric ceramic piece generates an electric signal according to the piezoelectric positive effect principle;
SS 03: the vibration signal detection circuit filters, amplifies, calculates and analyzes the electric signal to obtain whether the action state of the piezoelectric needle selector is normal or not.
The piezoelectric needle selector is driven by double piezoelectric wafers, and the single piezoelectric wafer can work under positive and negative electric fields for a long time to influence the service life of the piezoelectric needle selector due to the adoption of the single piezoelectric wafer driving, so that the double piezoelectric wafers are driven in a time-sharing mode, and the piezoelectric needle selector can be used as an actuator and a sensor due to the bidirectional effect of the piezoelectric ceramic wafers. When power is supplied to the sensing actuator through the driving plate, wherein the upper piezoelectric wafer 12 drives the whole laminated structure 3 by the inverse piezoelectric effect, the needle selector bit 1 is driven by a rotating shaft arranged on the needle selector shell to swing upwards to collide with the baffle 2 to reach the upper limit of the motion of the baffle, the lower piezoelectric wafer 14 and the middle high carbon fiber base layer 13 are passively bent and deformed, when the voltage is unloaded, the lower piezoelectric wafer 14 drives the whole laminated structure 3 by the inverse piezoelectric effect, the needle selector bit 1 is driven by the rotating shaft arranged on the needle selector shell to swing downwards to collide with the baffle 2 to reach the lower limit of the motion of the baffle, and the upper piezoelectric wafer 12 and the middle high carbon fiber base layer 13 are passively bent and deformed, and the piezoelectric needle selector utilizes the inverse piezoelectric effect of the piezoelectric ceramic wafer to realize the function of an executing element.
When the actuator works, the needle selector tool bit 1 impacts the baffle 2 from static accelerated swing, in the process of instantaneous collision, the baffle 2 exerts a reaction force on the needle selector tool bit 1, the reaction force is transmitted to the piezoelectric ceramic plate through the needle selector tool bit 1, the piezoelectric ceramic plate can generate electric displacement under the action of a positive piezoelectric effect, and the piezoelectric ceramic plate realizes the function of a sensor.
In actual operation, when the sensing actuator is loaded with the voltage U0, the piezoelectric ceramic plate is equivalent to a capacitor, and the piezoelectric ceramic plate is charged under the condition due to the electrical characteristics of the piezoelectric ceramic plate, and the charging process of the piezoelectric ceramic plate is detected in the vibration signal detection circuit. When the needle selector bit 1 collides with the baffle 2, the charging process is not completely finished, the vibration signal at the moment is converted into an electric signal through the piezoelectric effect, and then the electric signal is coupled into a previous charging signal, and the two signals are linearly coupled to form a final detection signal U1. Because the piezoelectric ceramic materials have differences, the frequency and the amplitude of a signal are demarcated to a certain range by detecting an execution sensor signal under a normal working state, if the frequency and the amplitude of the signal are not in the range in an actual working state, the working state of the piezoelectric needle selector is judged to be abnormal, and if the frequency and the amplitude of the signal are in the range, the working state of the piezoelectric needle selector is stable.
A piezoelectric needle selector perception execution integrated state detection system fully utilizes the bidirectional effect of a piezoelectric ceramic piece under the condition of not additionally adding a sensor, so that the piezoelectric needle selector can be used as an execution element and a sensing element in the piezoelectric needle selector, the utilization efficiency of the piezoelectric ceramic piece is improved, and excessive elements are prevented from being added in the needle selector; when the piezoelectric ceramic piece is used as an actuator, an electrical characteristic signal and when the piezoelectric ceramic piece is used as a sensor, a vibration signal generated by collision between a tool bit and a baffle or collision between the tool bit and a jacquard needle are coupled into a final detection signal by a vibration signal detection circuit, and then whether the frequency and the amplitude of the coupled signal are within a preset amplitude range is judged, so that whether the working state of the piezoelectric needle selector is normal or not is judged, the detection on the working state of the piezoelectric needle selector is realized, and serious consequences such as fabric flaws, machine firing pins and the like caused by unstable or invalid working state of the needle selector can be greatly avoided in engineering. The piezoelectric ceramic plate is also applied to the dual functions of the actuating element and the sensing element.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. A piezoelectric needle selector perception execution integrated state detection system comprises a piezoelectric needle selector and is characterized in that:
the piezoelectric needle selector comprises a piezoelectric ceramic piece, a baffle, a needle selector tool bit and a control circuit board;
the piezoelectric ceramic piece is a driving element of a needle selector tool bit and a detection element of a vibration signal of the needle selector tool bit colliding with the baffle;
the control circuit board comprises a piezoelectric ceramic piece driving circuit and a vibration signal detection circuit;
the piezoelectric ceramic piece driving circuit controls the piezoelectric ceramic piece to bend up and down, and the piezoelectric ceramic piece is an actuating element and drives the needle selector tool bit to swing up and down;
the vibration signal detection circuit detects and conditions the electric signal generated by the piezoelectric ceramic plate to obtain whether the action state of the piezoelectric needle selector is normal.
2. The piezoelectric needle selector perception-execution integrated state detection system according to claim 1, characterized in that:
the piezoelectric ceramic piece detects vibration signals generated by collision of a needle selector bit and a baffle and vibration signals generated by collision of various knitting needles striking the bit and the baffle through a piezoelectric positive effect principle;
the force generated by the vibration is applied to the piezoelectric ceramic piece, and the piezoelectric ceramic piece generates an electric signal.
3. The piezoelectric needle selector perception-execution integrated state detection system according to claim 1, characterized in that:
the piezoelectric ceramic piece driving circuit drives and controls the piezoelectric ceramic piece through a piezoelectric inverse effect principle;
when the piezoelectric ceramic piece driving circuit outputs positive and negative voltages, the piezoelectric ceramic piece is positively and negatively applied with the voltage and is bent up and down.
4. The piezoelectric needle selector perception-execution integrated state detection system according to claim 1, characterized in that:
the vibration signal detection circuit is electrically connected with the piezoelectric ceramic piece to obtain the electric signals generated by the reaction force generated by the collision of the needle selector bit with the baffle and the reaction force generated by the collision of various knitting needles with the baffle;
the vibration signal detection circuit carries out filtering, amplification, calculation and analysis processing on the obtained electric signal to obtain the action state of the piezoelectric needle selector.
5. The piezoelectric needle selector perception-execution integrated state detection system according to claim 1, characterized in that:
the piezoelectric ceramic piece is of a laminated structure and comprises an upper piezoelectric wafer, a lower piezoelectric wafer and a middle high carbon fiber base layer;
the upper layer piezoelectric wafer and the lower layer piezoelectric wafer are symmetrically adhered to the upper surface and the lower surface of the middle high carbon fiber base layer through conductive adhesives.
6. The piezoelectric needle selector perception-execution integrated state detection system according to claim 5, characterized in that:
the piezoelectric ceramic chip is fixedly arranged on a fixing component, and electrodes are led out from the tail ends of the upper piezoelectric chip, the lower piezoelectric chip and the middle high carbon fiber base layer;
the fixed component is provided with three conductive columns respectively corresponding to the electrodes, and the three conductive columns are inserted on the piezoelectric needle selector driving plate.
7. The piezoelectric needle selector sensing and execution integrated state detection system as claimed in claim 6, wherein the fixing component is provided with a fixing convex pillar, and the fixing component fixes the piezoelectric ceramic plate on the needle selector housing through the fixing convex pillar.
8. The piezoelectric selector aware execution integrated state detection system according to any one of claims 1 to 7, wherein the working method of the integrated state detection system comprises the following steps:
SS 01: the piezoelectric ceramic piece driving circuit drives and controls the piezoelectric ceramic piece to bend, and the piezoelectric ceramic piece drives the needle selector tool bit to swing up and down;
SS 02: when the needle selector tool bit swings up and down and collides with the baffle, the generated collision force is reacted on the piezoelectric ceramic piece, the force generated by the collision between various knitting needle striking tool bits and the baffle is reacted on the piezoelectric ceramic piece, and the piezoelectric ceramic piece generates an electric signal according to the piezoelectric positive effect principle;
SS 03: the vibration signal detection circuit filters, amplifies, calculates and analyzes the electric signal to obtain whether the action state of the piezoelectric needle selector is normal or not.
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| CN201910949780.7A CN110629384B (en) | 2019-10-08 | 2019-10-08 | Piezoelectric needle selector sensing and executing integrated state detection system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197196A (en) * | 2020-01-19 | 2020-05-26 | 重庆胜普昂凯科技有限公司 | Piezoelectric needle selector and piezoelectric needle selection assembly |
| CN111235747A (en) * | 2020-01-19 | 2020-06-05 | 重庆胜普昂凯科技有限公司 | Piezoelectric needle selection piece mounting structure system |
| CN112394235A (en) * | 2020-11-18 | 2021-02-23 | 浙江理工大学 | Piezoelectric element detection system and method and application |
| CN112415289A (en) * | 2020-11-18 | 2021-02-26 | 浙江理工大学 | Piezoelectric element detection system and method and application |
| CN113668136A (en) * | 2020-05-14 | 2021-11-19 | 卡尔迈耶斯托尔研发有限公司 | Method for maintaining warp knitting machine |
| CN113914006A (en) * | 2021-10-13 | 2022-01-11 | 浙江理工大学 | Stepping type yarn feeder based on piezoelectric ceramics and control method |
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