CN103743992A - Durability test system and high-efficiency consistency test method for electrical appliance sockets - Google Patents
Durability test system and high-efficiency consistency test method for electrical appliance sockets Download PDFInfo
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- CN103743992A CN103743992A CN201410033975.4A CN201410033975A CN103743992A CN 103743992 A CN103743992 A CN 103743992A CN 201410033975 A CN201410033975 A CN 201410033975A CN 103743992 A CN103743992 A CN 103743992A
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Abstract
The invention discloses a durability test system and a high-efficiency consistency test method for electrical appliance sockets used for household and similar purposes. The system consists of an upper computer control device, a lower computer control device and a stepping motor execution operating device, wherein a stepping motor actuator replaces the conventional pneumatic rod actuator, and the disadvantages that the pneumatic rod actuator has heavy operation and maintenance workload and high cost are eliminated. Three-dimensional clamp numerical control positioning has the advantages of continuous testing without interruption, precise positioning and high test result consistency. The test under the control of a corrected elevator speed analogue quantity is implemented referring to an elevator speed curve, wherein the test comprises speed open-loop control of a non-plug sub-stroke and displacement closed-loop control of a plug sub-stroke; the whole process of the corrected elevator speed test does not have acceleration transilience, so that both the test efficiency and the test precision are taken into consideration; in addition, the probability that test equipment is damaged by a rigid mechanical transmission pair of a stepping motor is stopped by the displacement closed-loop control of the plug sub-stroke.
Description
Technical field
The present invention relates to the technical field of family expenses and similar applications electrical equipment durability test, particularly the durability testing system of a kind of family expenses and similar applications receptacle and efficient conformance test method.
Background technology
Family expenses and similar applications receptacle, as basic circuit connector part, are indispensable electric appliances accessory product in work and life.Effectively test macro and method of testing are one of critical support technology ensureing socket quality, and the quality of socket quality is directly connected to the reliable use of access electrical equipment and user's personal safety.The durability index of receptacle is the technical target of the product that state compulsory standard regulation is expressed; The intension of permanance refers to the under-stream period of product non-fault (or Maintenance free), for characterizing the probable life characteristic of product.The harm not up to standard of socket durability index is as follows:
1. at legal durability index, in the phase, cannot guarantee that electrical equipment is through the reliable place in circuit of socket, or connect opening circuit of stopping that socket defect causes after circuit; This will affect people's normal work and life.
2. at legal durability index, in the phase, cannot get rid of the short circuit that socket defect causes; This even jeopardizes personal safety by damage electrical equipment.
3. at legal durability index, in the phase, cannot eliminate the mating surface virtual connection phenomenon of socket and plug, circuit is in switch-on and-off or by disconnected not disconnected state; This is by the high heat in the part that causes mating surface and circuit is aging and then initiation fire, causes great people life property loss.
In Dec calendar year 2001, in the < < Compulsory Certification of Products administrative provisions > > that China promulgates for the first time, just classify socket, switch as Compulsory certification of products.Before enterprise product listing, must detect by corresponding, and obtain CCC certificate; In addition, also require enterprise by modes such as check, sampling observations, to check and maintain every year the quality stability of product.According to existing standard GB/T 2099.1-2008 < < family expenses and similar applications plugs and sockets part 1: the switch part 1 of General Requirement > > and GB16915.1-2003 < < family expenses and similar applications fixed electric: the requirement of General Requirement > > relevant provision, product must be through corresponding viability test.The requirement of GB durability test part gathers in Table 1; Obviously, during the test of permanance product certification, switch need be through the operation of 50000 left and right, and socket has needed the connect-disconnect life test of approximately 10000 times.Viability test regulation: should be undeformed after specification product test, various functions is normal.
The technical manual of table 1 switch, socket durability test
At present, main flow test macro and method that socket and switch endurance authentication adopt are: air pump connecting electronic pneumatic valve, by summary procedure, control the open and close of pneumatic valve; By pneumatic valve On/Off state Qie Change, air pressure/spring promotes the pneumatic execution bar back and forth movement that goes round and begins again, and completes the durability test of socket and switch.Above-mentioned test macro technology maturation based on switching value control technology, simple in structure, but in test practice for many years, the weak point of main flow test macro also exposes gradually, urgently improves; Relative switch, the durability test problem of socket is particularly outstanding, so the present invention only launches to discuss with regard to the durability test of socket.The defect that main flow durability testing system and method exist and the analysis of causes of defect are as follows:
1, O&M workload and the expense of test macro are excessive.Under prior art condition, the mean lifetime of air-leg is 100000 left and right, and one time socket durability test just needs the plug of 10000 times; The air-leg proportion of goods damageds are too large, cause the sharp increase of testing cost and O&M workload.
2, complex operation, efficiency and precision are on the low side.First, during fixed socket, test macro adopts the method for two-dimentional fixture and artificial visual clamping, needs repeatedly to adjust the clamping location of socket, complex operation, time and effort consuming before test; The second, socket is after the permanance plug of certain number of times, and often the impact when inserting and the friction force while extracting cause the fixture of fixed socket to be offset, therefore in test by forced-stopping machine, the event of clamping location is of common occurrence again, testing efficiency decline; Finally, have relatively high expectations to test man's in artificial visual clamping location, and different because of people's (clamping positioning precision of socket) on test result certain degree, measuring accuracy is on the low side.
3, the consistance of test result has much room for improvement.Under the control of pneumatic valve on/off switch amount, air-leg completes the required plug operation of socket durability test; Based on considering of testing efficiency, the test travel speed of air-leg can not be too low, but plug can produce shock more or less with socket while plugging at a high speed, even occurs striking sparks and arcing phenomenon, not only damage test block socket, and make the consistance variation of test result.Though GB does not strictly limit plug speed and the clamping positioning precision of socket, but theoretical analysis all shows with experiment test: the clamping positioning precision of permanance detected value and plug speed, socket exists associated--different because of plug speed and positioning precision, A laboratory is judged to qualified socket and is likely vetoed in B laboratory, and vice versa.The test of theoretical ideal should at utmost reappear the residing actual working environment of test block and operating conditions, the common artificial visual positioning socket of appliance plug, slowly inserts or extract socket by manpower, does not generally have impact therebetween; Therefore the air-leg plug operation that, switching value is controlled has departed from the practical operation condition of socket; By three-dimensional clamping numerical control positioning and analog quantity control technology, contribute to undoubtedly to improve the consistance of permanance detected value.Whether according to plug, contact with socket, the test stroke of air-leg can be further subdivided into the sub-stroke of plug and the sub-stroke of non-plug; While plugging sub-stroke, air-leg is got low speed, avoids the shock of plug and socket; During the sub-stroke of non-plug, the efficient of test got at a high speed, is conceived to air-leg, and simultaneously preferred air-leg high speed stroke is still needed to meet and suddenlyd change without acceleration (power).
For the defect of existing test macro and method of testing existence, the present invention proposes innovative approach one by one: step motor actuator replaces air-leg actuator; The artificial location of two dimension clamping is improved to three-dimensional clamping numerical control positioning; Give up switching value and control the strategy of test travel speed, use for reference " elevator speed " curve, implement the strategy that analog quantity is controlled test travel speed.Must be pointed out, air-leg actuator allows test stroke to have certain displacement overgauge, because gas is compressible and the air pressure of the maximum drive air pressure≤source of the gas of air-leg actuator; But step motor actuator has strictly and places restrictions on the displacement overgauge of stroke, and mechanical drive pair is incompressible after all; Therefore, the accurate displacement control strategy that step motor actuator plugs sub-stroke is necessary, and the end of desirable " elevator speed " curve need be done corresponding correction--guarantee to plug the accurate displacement of sub-stroke.
Summary of the invention
The object of the invention is to overcome the deficiency of existing main flow test macro and technology, durability testing system and the efficient conformance test method of a kind of family expenses and similar applications receptacle is provided.
The durability testing system of family expenses and similar applications receptacle is by a PC control device, slave computer control device and executable operations installation composition;
PC control device comprises industrial computer and lower cabinet; Industrial computer is placed in lower cabinet top, through RS485 interface, connects the PLC of slave computer control device, and the built-in uninterrupted power source of lower cabinet is connected with electrical network;
Slave computer control device comprises display unit, control module, three axle point moving cells and slave computer switch board; Display unit is positioned at the top of slave computer control device, comprises the socket electrical quantity LED display of test macro and the navigation LED display that load arranges; Control module is positioned at the middle part of slave computer control device, comprises resistance adjustment module, adjustment of inductance module, work display lamp, alarm display lamp, debugging control switch, on/off switch, boost button, step-down button and scram button;
Control module is connected with slave computer switch board, regulates resistance, coil and the pressure regulator in slave computer switch board, the testing power supply of generation receptacle durability test standard regulation, and the electric parameter of testing power supply is presented on display unit in real time;
Three axle point moving cells comprise positive and negative to X-axis inching button, positive and negative to Y-axis inching button, positive and negative to Z axis inching button, each button is connected with the PLC in slave computer switch board respectively, after socket installation to be detected, by three axle point moving cells, obtain X, Y, the Z tri-axle positional parameters of socket to be detected;
Slave computer switch board inside PLC, accepts the industrial computer instruction of PC control device by RS485 bus, output analog quantity control signal is to stepper motor driver module;
Executable operations device comprises latticed operator's console, gantry stand, X-axis stepping mechanism, Z axis stepping mechanism, Y-axis stepping mechanism, three-dimensional grips mechanism and lower cabinet; Gantry stand is arranged on latticed operator's console, and X-axis stepping mechanism, Z axis stepping mechanism, Y-axis stepping mechanism are connected with stepper motor driver module, carry out respectively X, Y, Z axis to motion; Three-dimensional grips mechanism, by X, Y, the three-dimensional technique for fixing of Z, is fixed on measured piece on latticed operator's console.
Described latticed operator's console comprises the y-axis stepper motor installing plate of adjustable feet, lower shoe, latticed working plate, Y-axis stepping mechanism, the rail plate of the Y-axis worm couple mounting hole of Y-axis stepping mechanism and parts of bearings, gantry stand and installation dividing plate;
Latticed operator's console from top to bottom, is fixed into a rectangular frame by screw by latticed working plate, installation dividing plate and lower shoe respectively; Lower shoe is fixed on adjustable feet by screw; Y-axis stepper motor installing plate, Y-axis worm couple mounting hole and parts of bearings are individually fixed on the installation dividing plate on right side; Two rail plates of gantry stand fix to clamp respectively between the installation dividing plate of two of left and right.
Described gantry stand comprises the installing plate of slide block, the slide block on Y-axis worm couple, Z-type installing plate and gantry stand rail plate slide block on the X-axis stepper motor installing plate, the rectangle installing plate of X-axis stepping mechanism, the X-axis worm couple mounting hole of the rail plate of X-axis stepping mechanism, X-axis stepping mechanism and parts of bearings, gantry stand rail plate of X-axis stepping mechanism;
Two of left and right Z-type installing plate is fixing in aggregates by the slide block on the installing plate of the slide block on the rail plate of the rectangle installing plate of X-axis stepping mechanism, X-axis stepping mechanism, gantry stand rail plate, gantry stand rail plate and the slide block on Y-axis worm couple respectively from top to bottom by screw, this integral body is fixed on Y-axis worm couple by the slide block on Y-axis worm couple, and y-axis stepper motor is implemented Y-motion through Y-axis worm couple; The mounting hole of X-axis worm couple and parts of bearings are installed on respectively on the two Z-type installing plates in left and right; The installing plate of X-axis stepper motor is fixed on the Z-type installing plate of left side.
Described X-axis stepping mechanism comprises Z axis stepper motor installing plate, the upper mounting plate of Z axis stepping mechanism, the installation slide block of the lower installation board of the rail plate of Z axis stepping mechanism, Z axis stepping mechanism, the slide block on X-axis worm couple and approach switch of X-axis stepper motor, X-axis worm couple, Z axis stepping mechanism;
X-axis worm couple is arranged in the rotating shaft of X-axis stepper motor by shaft coupling, from top to bottom respectively by screw by the lower installation board of the slide block on the rail plate of the upper mounting plate of Z axis stepper motor installing plate, Z axis stepping mechanism, Z axis stepping mechanism, X-axis worm couple and Z axis stepping mechanism fastening be an integral body, positive and negative to X-axis inching button, the PLC in slave computer switch board controls X-axis stepper motor, drives X-axis worm couple to implement X-motion, and PLC records X axis travel displacement
;slide block is installed and is arranged on rail plate, its position can be adjusted according to the concrete size of test product and installation site.
Described Z axis stepping mechanism comprises slide block, plug fixed device and the approach switch on Z axis stepper motor, Z-axis transmission worm screw, Z axis stepper motor;
Plug fixed device is fixed the corresponding plug of socket to be detected, the side that approach switch XS612B1PLA2 is arranged on the installation slide block of approach switch, induction metal plate is arranged on plug fixed device, it is lower to flushing with edge under standard plug latch, the interrupting input end INT1 of PLC in the output signal access slave computer switch board of approach switch;
It is positive and negative that to Z axis inching button, the PLC in slave computer switch board controls Z axis stepper motor, drives Z axis worm couple to implement Z-motion; PLC records Z-axis direction travel displacement, according to approach switch installation parameter and the test speed parameter of user input, host computer generates " elevator speed " test curve tables of data of correction accordingly: the stepper motor pulsed frequency table of the Speed open-loop control of the sub-stroke of non-plug, plug the stepper motor umber of pulse of the displacement closed-loop control of sub-stroke; The sub-stroke of non-plug is plug from detecting initial point to the travel displacement of approach switch, the travel displacement when plugging sub-stroke and be approach switch to plug insertion socket and completing.
Described Y-axis stepping mechanism comprises y-axis stepper motor and Y-axis transmission worm screw;
Positive and negative to Y-axis inching button, the PLC in slave computer switch board controls y-axis stepper motor, drives Y-axis worm couple to implement Y-motion, realizes gantry stand in the motion of Y-axis, and PLC records Y-axis travel displacement.
Described three-dimensional grips mechanism comprises eight cross fishtail bolts and two elastic clamping sheets;
Every cross fishtail bolt is comprised of a stud, two set screw and a clamp with resilient material; The stud first half is column helicitic texture, and Lower Half is column smooth structure, and set screw is threadedly secured in the Lower Half of this bolt, and bolt bottom is cross dovetail structure, and clamp is fixed in set screw; Elastic clamping sheet is a flat metal moulding, and respectively there is a through hole at its two ends, and cross fishtail bolt is through in addition fastening with spring shim and nut after through hole, moulding middle part be adjacent to measured piece part also for resilient material, in order to increase clamping force; Measured piece is fixed on any one grid of latticed working plate, eight cross fishtail bolts be take two as one group, respectively from X, Y-axis positive and negative two to clamping measured piece, guarantee the clamping of measured piece X, Y direction, tighten resilient material face that set screw makes clamp and be close to the bottom mounting box of measured piece, by fixing of eight cross fishtail bolts, assurance measured piece is fastening X, Y direction; Two elastic clamping sheets respectively by spring shim and fastening nuts on two groups of cross fishtail bolts of Y direction, measured piece is tightly fixed between latticed working plate and elastic clamping sheet, guarantee the fixing of its Z-direction, thereby realize the stability of three-dimensional clamping and the uniqueness of locus; In durability test process, three-dimensional clamping has been stopped the socket displacement that plug process produces because of friction force, and displacement the test interruption and the secondary clamping that cause; During the test of same model socket, can omit the operation that crawl is determined socket X, Y, Z coordinate parameters.
Described slave computer control device is selected VB1-24MT PLC and YK2609MA stepper motor driver module; The RS485 port of VB1-24MT is connected with the RS485 port of industrial computer, accepts correction " elevator speed " curve data that host computer generates, and carries out the sub-travel speed open loop of efficient non-plug and controls; The interruptive port INT1 of the digital quantity signal access VB1-24MT of approach switch, interrupt response program is read in the stepper motor umber of pulse of the sub-travel displacement of plug that approach switch is corresponding, plugs accurately sub-travel displacement closed-loop control; Positive and negative to X-axis inching button, positive and negative to Y-axis inching button, the positive and negative digital quantity signal to Z axis inching button accesses respectively digital quantity input port DI0, DI1, DI2, DI3, DI4 and the DI5 of VB1-24MT, crawl is controlled X-axis stepping mechanism, Z axis stepping mechanism and Y-axis stepping mechanism, determines socket X, Y, Z coordinate parameters; VB1-24MT analog output end AI0, AI1 access respectively PU-, the DR-of the first stepping motor drive module, drive the X-axis stepper motor of X-axis stepping mechanism; VB1-24MT analog output end AI2, AI3 access respectively PU-, the DR-of the second stepping motor drive module, drive the y-axis stepper motor of Y-axis stepping mechanism; VB1-24MT analog output end AI4, AI5 access respectively PU-, the DR-of the 3rd stepper motor driver module, drive the Z axis stepper motor of Z axis stepping mechanism.
Speed ~ the time of described receptacle durability test Z axis stroke, acceleration ~ time curve are used for reference " ideal speed curve " that elevator industry is praised highly, from the acceleration visual angle of plug, consider the acceleration and deceleration process of plug stroke be divided into 7 stages: add accelerating sections, even accelerating sections, subtract accelerating sections, at the uniform velocity section, accelerating and decelerating part, even braking section, subtract braking section, and consider from the speed visual angle of plug, " ideal speed curve " is divided into again starting and accelerates, travels at the uniform speed and three sections of braking decelerations, and simultaneously rise/retaining segment curve is mirror image symmetry; According to plug, whether contact, test stroke with socket and be divided into the sub-stroke of plug and the sub-stroke of non-plug, testing efficiency depends on the plug speed of the sub-stroke of non-plug, and the plug speed that plugs sub-stroke is related to measuring accuracy; " ideal speed curve " taken into account testing efficiency and measuring accuracy: the height of the plug S that tested the speed
no-insertthe low S that tested the speed of displacement, plug
insertdisplacement;
Consider the gap error of Electrified Transmission error and mechanical drive pair and the variation of electrical equipment parameter and the mechanical wear error that long-term test causes, presence bit shift error ± Δ S(Δ S>0 in test stroke); With regard to the Hang Ji Ju of the rigidity Zhi stepper motor of test macro, Δ S is huge on the impact of testing reliability, measuring accuracy: during+Δ S, while there will be great pressure even to crush socket or plug ,-Δ S between plug and socket, plug does not insert socket by standard-required does not cause test result serious distortion, the plug open loop based on " ideal speed curve " is controlled and revised: at S from home
insert+ Δ S place arranges approach switch, this test macro Δ S=5mm;
Definition 1: the sub-travel displacement of non-plug of correction is S
no-insert-Δ S=125mm-5mm=120 mm,
Definition 2: the sub-travel displacement of plug of correction is S
insert+ Δ S=25mm+5mm=30 mm;
The plug control algolithm of revising " ideal speed curve " is as follows:
， Ji Suan And storage S during the motion of plug insertion socket direction
insertstepper motor pulsed quantity N0, N=N0 that+Δ S is corresponding,
The sub-travel displacement S of non-plug revising
no-insertwithin the scope of-Δ S, by stepper motor pulsed frequency f corresponding to " ideal speed curve ", the speed of open loop controller plug,
The sub-travel displacement S of plug revising
insertwithin the scope of+Δ S, carry out the closed loop control algorithm of displacement--read the stepper motor pulsed frequency f that " ideal speed curve " is corresponding, displacement closed-loop control N=N-f*Ts is until N=0, and f is that stepper motor pulsed frequency, the Ts of corresponding ideal speed is the sampling period,
When plug is extracted the motion of socket direction, the control algolithm while continuing to use the motion of plug insertion socket direction.
The efficient consistency detecting method of permanance of described receptacle is divided into: flow process and plug plug testing process are prepared in test;
Flow process is prepared in test: product to be tested is fixed on latticed working plate from X-axis, Y-axis, Z-direction by three-dimensional clamping mechanism, plug fixed device is fixed the corresponding plug of socket to be detected, on Z axis stepping mechanism rail plate, approach switch is installed, plug, apart from socket 5mm, is inputted the installation site of approach switch on host computer while making plug contact approach switch;
By three axle point moving cells, make plug insertion socket, PLC records socket coordinate, and test initial point to the Z axis travel displacement of approach switch is the sub-travel displacement S of non-plug
no-insert-z axis travel displacement when Δ S, approach switch to plug insertion socket complete plugs sub-travel displacement S
insert+ Δ S, host computer generates " elevator speed " test curve tables of data of correction accordingly: the stepper motor pulsed frequency table of the Speed open-loop control of the sub-stroke of non-plug, plug the stepper motor umber of pulse of the displacement closed-loop control of sub-stroke; By control module, regulate resistance, coil and the pressure regulator in slave computer switch board, the testing power supply of generation receptacle durability test standard regulation; Plug resets;
Plug plug testing process: X, Y-axis stepping mechanism are according to socket X, the Y coordinate setting plug of PLC record, correction " elevator speed " the test curve tables of data that Z axis stepping mechanism generates according to host computer is carried out the Speed open-loop control of the sub-stroke of non-plug, plug during through approach switch, approach switch output PLC look-at-me, proceeds to the displacement closed-loop control of correction " elevator speed " the test curve tables of data of the sub-stroke of non-plug; Plug withdrawal process and insertion process be mirror image each other, and at measured piece, without extremely and do not arrive before set point number, program loop is carried out the sub-stroke of non-plug with the sub-stroke of plug until test is ended.
The present invention compares with background technology, and the beneficial effect having is: the present invention replaces existing air-leg actuator with step motor actuator, has eliminated air-leg actuator O&M workload and the excessive shortcoming of expense.Three-dimensional clamping numerical control positioning replaces two-dimentional clamping manually locates, and has advantages of that follow-on test does not interrupt, accurate positioning, test result consistance be high.The test of " elevator speed " analog quantity of using for reference " elevator speed " curve, implementing to revise under controlling: the Speed open-loop control of the sub-stroke of non-plug, plug the displacement closed-loop control of sub-stroke; " elevator speed " test of revising is omnidistance without acceleration (power) sudden change, has taken into account testing efficiency and measuring accuracy: the height of the sub-stroke of non-plug tests the speed, plugs the low of sub-stroke and tests the speed; In addition the possibility that stepper motor rigid mechanical transmission damages ring test equipment has been stopped in the displacement closed-loop control that, plugs sub-stroke.
Accompanying drawing explanation
Fig. 1 is the structural representation of receptacle durability testing system;
Fig. 2 is the connection diagram of control module and electric elements;
Fig. 3 is the structural drawing of latticed operator's console, wherein, (a) is front view, is (b) left view, is (c) vertical view;
Fig. 4 is the structural drawing of gantry stand, wherein, (a) is front view, is (b) left view;
Fig. 5 is the structural drawing of X-axis stepping mechanism, and wherein, (a) front view, (b) is left view;
Fig. 6 is the structural drawing of Z axis stepping mechanism;
Fig. 7 is the structural drawing of Y-axis stepping mechanism;
The structural drawing of Tu8Shi three-dimensional grips mechanism wherein, is (a) that cross fishtail bolt schematic diagram, (b) are that elastic clamping sheet schematic diagram, (c) are the vertical views after assembling;
Fig. 9 is the circuit diagram of PLC and stepper motor;
Figure 10 is the process flow diagram of receptacle durability test method;
Figure 11 is speed ~ time, the acceleration ~ time plot of receptacle durability test stroke.
Embodiment
As shown in Figure 1, the durability testing system of family expenses of the present invention and similar applications receptacle is by PC control device 100, and slave computer control device 200 and executable operations device 300 form; Executable operations device 300 is connected with slave computer control device 200, and slave computer control device 200 is connected with PC control device 100.
PC control device 100 comprises industrial computer 101 and lower cabinet 102; Industrial computer 101 is placed in lower cabinet 102 tops, through RS485 interface, connects the PLC of slave computer control device 200, and the built-in uninterrupted power source of lower cabinet 102 is connected with electrical network, is industrial computer 101 power supplies.
Slave computer control device 200 comprises display unit 210, control module 220, three axle point moving cells 230 and slave computer switch board 240; Display unit 210 is positioned at the top of slave computer control device 200, comprises the socket electrical quantity LED display 211 of test macro and the navigation LED display 212 that load arranges; Control module 220 is positioned at the middle part of slave computer control device 200, comprises resistance adjustment module 221, adjustment of inductance module 222, work display lamp 223, alarm display lamp 224, debugging control switch 225, on/off switch 226, boost button 227, step-down button 228 and scram button 229; Control module 220 is connected with slave computer switch board 240, regulate resistance, telefault and the pressure regulator in slave computer switch board 240, the testing power supply of generation receptacle durability test standard regulation, the electric parameter of testing power supply is presented on display unit 210 in real time; Three axle point moving cells 230 comprise forward X-axis inching button 231, negative sense X-axis inching button 232, forward Y-axis inching button 233, negative sense Y-axis inching button 234, forward Z axis inching button 235, negative sense Z axis inching button 236, each button is connected with the PLC in slave computer switch board 240 respectively, after socket installation to be detected, by three axle point moving cells, obtain X, Y, the Z tri-axle positional parameters of socket to be detected; Slave computer switch board 240 inside PLCs, accept industrial computer 101 instructions of PC control device by RS485 bus, output analog quantity control signal is to stepper motor driver module.
Executable operations device 300 comprises latticed operator's console 310, gantry stand 320, X-axis stepping mechanism 330, Z axis stepping mechanism 340, Y-axis stepping mechanism 350, three-dimensional grips mechanism 360 and lower cabinet 370; Gantry stand 320 is arranged on latticed operator's console 310, latticed operator's console 310 is placed on lower cabinet 370, X-axis stepping mechanism 330 and Z axis stepping mechanism 340 are arranged on gantry stand 320, Y-axis stepping mechanism 350 is arranged on latticed operator's console 310, X-axis stepping mechanism 330, Z axis stepping mechanism 340, Y-axis stepping mechanism 350 connect respectively a stepper motor driver module, carry out X, Y, Z axis to motion; Three-dimensional grips mechanism 360, by X, Y, the three-dimensional technique for fixing of Z, is fixed on measured piece on latticed operator's console 310.
As shown in Figure 2, in slave computer switch board 240, built-in TDGC2-10KVA pressure regulator 241, MY1810-A telefault 242, variable resistor 243, fixed resistance 244, current/voltage table 245 form load circuit with the contained resistance adjustment module 221 of control module 220, adjustment of inductance module 222, work display lamp 223, alarm display lamp 224, debugging control switch 225, on/off switch 226, boost button 227, step-down button 228 and scram button 229, and TDGC2-10KVA pressure regulator 241 input ends connect electrical network.
As shown in Fig. 3 (a) and (b), (c), latticed operator's console 310 comprises the y-axis stepper motor installing plate 314 of adjustable feet 311, lower shoe 312, latticed working plate 313, Y-axis stepping mechanism 350, the rail plate 316 of the Y-axis worm couple mounting hole of Y-axis stepping mechanism 350 and parts of bearings 315, gantry stand 320 and installation dividing plate 317.
Latticed operator's console 310 from top to bottom, is fixed into a rectangular frame by screw by latticed working plate 313, installation dividing plate 317 and lower shoe 312 respectively; Lower shoe 312 is fixed on adjustable feet 311 by screw; Y-axis stepper motor installing plate 314, Y-axis worm couple mounting hole and parts of bearings 315 are individually fixed on the installation dividing plate 317 on Fig. 3 (b) right side; Two rail plates 316 of gantry stand 320 fix to clamp respectively between the installation dividing plate 317 of two of left and right.
As shown in Fig. 4 (a) and (b), gantry stand 320 comprises the installing plate 328 of slide block 325, the slide block 326 on Y-axis worm couple, Z-type installing plate 327 and gantry stand rail plate slide block 325 on the X-axis stepper motor installing plate 321, the rectangle installing plate 322 of X-axis stepping mechanism 330, the X-axis worm couple mounting hole of the rail plate 323 of X-axis stepping mechanism 330, X-axis stepping mechanism 330 and parts of bearings 324, gantry stand rail plate 316 of X-axis stepping mechanism 330.
Two of left and right of Fig. 4 (a) Z-type installing plate 327 is fixing in aggregates by the slide block 325 on the installing plate 328 of the slide block 325 on the rail plate 323 of the rectangle installing plate 322 of X-axis stepping mechanism 330, X-axis stepping mechanism 330, gantry stand rail plate, gantry stand rail plate 316 and the slide block on Y-axis worm couple 326 respectively from top to bottom by screw, this integral body is fixed on Y-axis worm couple by the slide block 326 on Y-axis worm couple, and y-axis stepper motor is implemented Y-motion through Y-axis worm couple; The mounting hole of X-axis worm couple and parts of bearings 324 are installed on respectively on the two Z-type installing plates 327 in left and right; The installing plate 321 of X-axis stepper motor is fixed on left side Z-type installing plate 327.
As shown in Fig. 5 (a) and (b), X-axis stepping mechanism 330 comprises Z axis stepper motor installing plate 333, the upper mounting plate 334 of Z axis stepping mechanism 340, the installation slide block 338 of the lower installation board 336 of the rail plate 335 of Z axis stepping mechanism 340, Z axis stepping mechanism 340, the slide block 337 on X-axis worm couple 332 and approach switch of X-axis stepper motor 331, X-axis worm couple 332, Z axis stepping mechanism 340.
As shown in Figure 6, Z axis stepping mechanism 340 comprises slide block 343, plug fixed device 344 and the approach switch 345 on Z axis stepper motor 341, Z-axis transmission worm screw 342, Z axis stepper motor 341.
The fixing corresponding plug of socket to be detected of plug fixed device 344, the side that approach switch XS612B1PLA2 345 is arranged on the installation slide block 338 of approach switch, induction metal plate is arranged on plug fixed device 344, it is lower to flushing with edge under standard plug latch, the interrupting input end INT1 of the output signal access slave computer switch board 240 interior PLC of approach switch.
Forward Z axis inching button 235, negative sense Z axis inching button 236 PLC in slave computer switch board 240 controls Z axis stepper motor 341, drives Z axis worm couple 342 to implement Z-motion; PLC records Z-axis direction travel displacement, according to approach switch installation parameter and the test speed parameter of user input, host computer generates " elevator speed " test curve tables of data of correction accordingly: the stepper motor pulsed frequency table of the Speed open-loop control of the sub-stroke of non-plug, plug the stepper motor umber of pulse of the displacement closed-loop control of sub-stroke; The sub-stroke of non-plug is plug from detecting initial point to the travel displacement of approach switch, the travel displacement when plugging sub-stroke and be approach switch to plug insertion socket and completing.
As shown in Figure 7, Y-axis stepping mechanism 350 comprises y-axis stepper motor 351 and Y-axis transmission worm screw 352.
Forward Y-axis inching button 233, negative sense Y-axis inching button 234 PLC in slave computer switch board 240 controls y-axis stepper motor 351, drives Y-axis worm couple 352 to implement Y-motion, realize gantry stand 320 in the motion of Y-axis, PLC records Y-axis travel displacement.
As shown in Fig. 8 (a) and (b), (c), three-dimensional grips mechanism 360 comprises eight cross fishtail bolts 361 and two elastic clamping sheets 362.
Every cross fishtail bolt 361 is comprised of a stud, two set screw and a clamp with resilient material; The stud first half is column helicitic texture, and Lower Half is column smooth structure, and set screw is threadedly secured in the Lower Half of this bolt, and bolt bottom is cross dovetail structure, and clamp is fixed in set screw; Elastic clamping sheet 362 is a flat metal moulding, and respectively there is a through hole at its two ends, and cross fishtail bolt 361 is through in addition fastening with spring shim and nut after through hole, moulding middle part be adjacent to measured piece part also for resilient material, in order to increase clamping force; Measured piece is fixed on any one grid of latticed working plate 313, eight cross fishtail bolts 361 be take two as one group, respectively from X, Y-axis positive and negative two to clamping measured piece, guarantee the clamping of measured piece X, Y direction, tighten resilient material face that set screw makes clamp and be close to the bottom mounting box of measured piece, by fixing of eight cross fishtail bolts 361, assurance measured piece is fastening X, Y direction; Two elastic clamping sheets 362 respectively by spring shim and fastening nuts on two groups of cross fishtail bolts 361 of Y direction, measured piece is tightly fixed between latticed working plate 313 and elastic clamping sheet 362, guarantee the fixing of its Z-direction, thereby realize the stability of three-dimensional clamping and the uniqueness of locus; In durability test process, three-dimensional clamping has been stopped the socket displacement that plug process produces because of friction force, and displacement the test interruption and the secondary clamping that cause; During the test of same model socket, can omit the operation that crawl is determined socket X, Y, Z coordinate parameters.
As shown in Figure 9, slave computer control device can be selected VB1-24MT PLC and YK2609MA stepper motor driver module; The RS485 port of VB1-24MT is connected with the RS485 port of industrial computer 101, accepts correction " elevator speed " curve data that host computer generates, and carries out the sub-travel speed open loop of efficient non-plug and controls; The interruptive port INT1 of the digital quantity signal access VB1-24MT of approach switch 345, interrupt response program is read in the stepper motor umber of pulse of the sub-travel displacement of plug that approach switch is corresponding, plugs accurately sub-travel displacement closed-loop control; The digital quantity signal of forward X-axis inching button 231, negative sense X-axis inching button 232, forward X-axis inching button 231, negative sense X-axis inching button 232, forward Z axis inching button 235, negative sense Z axis inching button 236 accesses respectively digital quantity input port DI0, DI1, DI2, DI3, DI4 and the DI5 of VB1-24MT, crawl is controlled X-axis stepping mechanism 330, Z axis stepping mechanism 340 and Y-axis stepping mechanism 350, determines socket X, Y, Z coordinate parameters; VB1-24MT analog output end AI0, AI1 access respectively PU-, the DR-of the first stepping motor drive module, drive the X-axis stepper motor 331 of X-axis stepping mechanism; VB1-24MT analog output end AI2, AI3 access respectively PU-, the DR-of the second stepping motor drive module, drive the y-axis stepper motor 351 of Y-axis stepping mechanism; VB1-24MT analog output end AI4, AI5 access respectively PU-, the DR-of the 3rd stepper motor driver module, drive the Z axis stepper motor 341 of Z axis stepping mechanism.
As shown in figure 10, Figure 10 (a) is " ideal speed curve " for the speed ~ time of receptacle durability test Z axis stroke, acceleration ~ time curve, starts from an O, whole to putting G; From the acceleration visual angle of plug, consider, VO ~ VA, VA ~ VB, VB ~ VC, VC ~ VD, VD ~ VE, VE ~ VF and VF ~ VG are divided into 7 stages by the acceleration and deceleration process of plug stroke: add accelerating sections, even accelerating sections, subtract accelerating sections, at the uniform velocity section, accelerating and decelerating part, even braking section, subtract braking section, and consider from speed visual angle Figure 10 (b) of plug, " ideal speed curve " is divided into again starting and accelerates, travels at the uniform speed and three sections of braking decelerations, and simultaneously rise/retaining segment curve is mirror image symmetry; " ideal speed curve " avoided the sudden change of acceleration, eliminated the power sudden change causing because of sudden change of acceleration in test process and impacted, and contributes to reduce the precision that stepper motor is lost the serviceable life of the probability of happening, Yan Long equipment of step, promoted durability test.
Improve testing efficiency, need to increase the test speed of plug, but the impact that the test speed of lifting plug causes measuring accuracy is negative; According to plug, whether contact, test stroke with socket and be divided into the sub-stroke of plug and the sub-stroke of non-plug, testing efficiency depends on the plug speed of the sub-stroke of non-plug, and the plug speed that plugs sub-stroke is related to measuring accuracy; The Z axis test stroke of Figure 10 receptacle durability testing system of now take sets off a discussion as example: the Z axis displacement S of the sub-stroke of non-plug
no-insert=125mm, plug the Z axis displacement S of sub-stroke
insert=25mm, " ideal speed curve " taken into account testing efficiency and measuring accuracy well: the height of the plug S that tested the speed
no-insertthe low S that tested the speed of displacement, plug
insertdisplacement.
Stepper motor reaches its maturity, such as indexs such as drift, anti-interference, reliability, precision, all obtain major progress, but consider the gap error of Electrified Transmission error and mechanical drive pair and the variation of electrical equipment parameter and the mechanical wear error that long-term test causes, presence bit shift error ± Δ S(Δ S>0 in test stroke); With regard to the Hang Ji Ju of the rigidity Zhi stepper motor of test macro, Δ S is huge on the impact of testing reliability, measuring accuracy: during+Δ S, while there will be great pressure even to crush socket or plug ,-Δ S between plug and socket, plug does not insert socket by standard-required does not cause test result serious distortion, therefore need the plug open loop based on " ideal speed curve " be controlled and be revised: at S from home
insert+ Δ S place arranges approach switch 345, this test macro Δ S=5mm.
Definition 1: the sub-travel displacement of non-plug of correction is S
no-insert-Δ S=125mm-5mm=120 mm.
Definition 2: the sub-travel displacement of plug of correction is S
insert+ Δ S=25mm+5mm=30 mm.
The plug control algolithm of revising " ideal speed curve " is as follows:
(a), when plug insertion socket direction is moved, Ji Suan And stores S
insertstepper motor pulsed quantity N0, N=N0 that+Δ S is corresponding.
(b) the sub-travel displacement S of non-plug revising
no-insertwithin the scope of-Δ S, by stepper motor pulsed frequency f corresponding to " ideal speed curve ", the speed of open loop controller plug.
(c) the sub-travel displacement S of plug revising
insertwithin the scope of+Δ S, carry out the closed loop control algorithm of displacement--read the stepper motor pulsed frequency f that " ideal speed curve " is corresponding, displacement closed-loop control N=N-f*Ts is until N=0, and f is that stepper motor pulsed frequency, the Ts of corresponding ideal speed is the sampling period.
(d) when plug is extracted the motion of socket direction, the control algolithm while continuing to use the motion of plug insertion socket direction.
As shown in Figure 11 (a) shows, the efficient consistency detecting method of the permanance of receptacle is divided into: flow process and plug plug testing process are prepared in test.
Test is prepared flow process as shown in Figure 11 (b): product to be tested is fixed on latticed working plate 313 from X-axis, Y-axis, Z-direction by three-dimensional clamping mechanism 360, the fixing corresponding plug of socket to be detected of plug fixed device 344, on Z axis stepping mechanism rail plate 335, approach switch 345 is installed, plug, apart from socket 5mm, is inputted the installation site of approach switch on host computer while making plug contact approach switch.
By three axle point moving cells 230, make plug insertion socket, PLC records socket coordinate, and test initial point to the Z axis travel displacement of approach switch is the sub-travel displacement S of non-plug
no-insert-z axis travel displacement when Δ S, approach switch to plug insertion socket complete plugs sub-travel displacement S
insert+ Δ S, host computer generates " elevator speed " test curve tables of data of correction accordingly: the stepper motor pulsed frequency table of the Speed open-loop control of the sub-stroke of non-plug, plug the stepper motor umber of pulse of the displacement closed-loop control of sub-stroke; By control module 220, regulate resistance, coil and the pressure regulator in slave computer switch board 240, the testing power supply of generation receptacle durability test standard regulation; Plug resets.
Plug plug testing process: X, Y-axis stepping mechanism are according to socket X, the Y coordinate setting plug of PLC record, correction " elevator speed " the test curve tables of data that Z axis stepping mechanism generates according to host computer is carried out the Speed open-loop control of the sub-stroke of non-plug, plug during through approach switch, approach switch output PLC look-at-me, proceeds to the displacement closed-loop control of correction " elevator speed " the test curve tables of data of the sub-stroke of non-plug; Plug withdrawal process and insertion process be mirror image each other, and at measured piece, without extremely and do not arrive before set point number, program loop is carried out the sub-stroke of non-plug with the sub-stroke of plug until test is ended.
Claims (10)
1. a durability testing system for family expenses and similar applications receptacle, is characterized in that, system is by PC control device (100), and slave computer control device (200) and executable operations device (300) form;
PC control device (100) comprises industrial computer (101) and lower cabinet (102); Industrial computer (101) is placed in lower cabinet (102) top, through RS485 interface, connects the PLC of slave computer control device (200), and the built-in uninterrupted power source of lower cabinet (102) is connected with electrical network;
Slave computer control device (200) comprises display unit (210), control module (220), three axle point moving cells (230) and slave computer switch board (240); Display unit (210) is positioned at the top of slave computer control device (200), comprises the socket electrical quantity LED display (211) of test macro and the navigation LED display (212) that load arranges; Control module (220) is positioned at the middle part of slave computer control device (200), comprises resistance adjustment module (221), adjustment of inductance module (222), work display lamp (223), alarm display lamp (224), debugging control switch (225), on/off switch (226), boost button (227), step-down button (228) and scram button (229);
Control module (220) is connected with slave computer switch board (240), regulate resistance, coil and the pressure regulator in slave computer switch board (240), the testing power supply of generation receptacle durability test standard regulation, the electric parameter of testing power supply is presented on display unit (210) in real time;
Three axle point moving cells (230) comprise forward X-axis inching button (231), negative sense X-axis inching button (232), forward Y-axis inching button (233), negative sense Y-axis inching button (234), forward Z axis inching button (235), negative sense are to Z axis inching button (236), each button is connected with the PLC in slave computer switch board (240) respectively, after socket installation to be detected, by three axle point moving cells, obtain X, Y, the Z tri-axle positional parameters of socket to be detected;
Slave computer switch board (240) inside PLC, accepts industrial computer (101) instruction of PC control device by RS485 bus, output analog quantity control signal is to stepper motor driver module;
Executable operations device (300) comprises latticed operator's console (310), gantry stand (320), X-axis stepping mechanism (330), Z axis stepping mechanism (340), Y-axis stepping mechanism (350), three-dimensional grips mechanism (360) and lower cabinet (370); It is upper that gantry stand (320) is arranged on latticed operator's console (310), and latticed operator's console (310) is placed on lower cabinet (370); X-axis stepping mechanism (330), Z axis stepping mechanism (340), Y-axis stepping mechanism (350) are connected with stepper motor driver module, carry out respectively X, Y, Z axis to motion; Three-dimensional grips mechanism (360), by X, Y, the three-dimensional technique for fixing of Z, is fixed on measured piece on latticed operator's console (310).
2. the durability testing system of a kind of family expenses according to claim 1 and similar applications receptacle, it is characterized in that, described latticed operator's console (310) comprises the y-axis stepper motor installing plate (314) of adjustable feet (311), lower shoe (312), latticed working plate (313), Y-axis stepping mechanism (350), the rail plate (316) of the Y-axis worm couple mounting hole of Y-axis stepping mechanism (350) and parts of bearings (315), gantry stand (320) and installation dividing plate (317);
Latticed operator's console (310) is fixed into a rectangular frame by latticed working plate (313), installation dividing plate (317) and lower shoe (312) from top to bottom; Lower shoe (312) is fixed on adjustable feet (311) by screw; Y-axis stepper motor installing plate (314), Y-axis worm couple mounting hole and parts of bearings (315) are individually fixed on the installation dividing plate (317) on right side; Two rail plates (316) of gantry stand (320) fix to clamp respectively between the two installation dividing plates in left and right (317).
3. the durability testing system of a kind of family expenses according to claim 1 and similar applications receptacle, it is characterized in that, described gantry stand (320) comprises the X-axis stepper motor installing plate (321) of X-axis stepping mechanism (330), the rectangle installing plate (322) of X-axis stepping mechanism (330), the rail plate (323) of X-axis stepping mechanism (330), the X-axis worm couple mounting hole of X-axis stepping mechanism (330) and parts of bearings (324), slide block (325) on gantry stand rail plate (316), slide block on Y-axis worm couple (326), the installing plate (328) of Z-type installing plate (327) and gantry stand rail plate slide block (325),
The two Z-type installing plates in left and right (327) pass through screw from top to bottom respectively by the rectangle installing plate (322) of X-axis stepping mechanism (330), the rail plate (323) of X-axis stepping mechanism (330), the installing plate (328) of the slide block (325) on the stand rail plate of gantry, slide block (325) on gantry stand rail plate (316) and the slide block (326) on Y-axis worm couple are fixing in aggregates, this integral body is fixed on Y-axis worm couple by the slide block on Y-axis worm couple (326), y-axis stepper motor is implemented Y-motion through Y-axis worm couple, the mounting hole of X-axis worm couple and parts of bearings (324) are installed on respectively on the two Z-type installing plates in left and right (327), the installing plate of X-axis stepper motor (321) is fixed on left side Z-type installing plate (327).
4. the durability testing system of a kind of family expenses according to claim 1 and similar applications receptacle, it is characterized in that, described X-axis stepping mechanism (330) comprises X-axis stepper motor (331), X-axis worm couple (332), the Z axis stepper motor installing plate (333) of Z axis stepping mechanism (340), the upper mounting plate (334) of Z axis stepping mechanism (340), the rail plate (335) of Z axis stepping mechanism (340), the lower installation board (336) of Z axis stepping mechanism (340), slide block (337) on X-axis worm couple (332) and the installation slide block (338) of approach switch,
X-axis worm couple (332) is arranged in the rotating shaft of X-axis stepper motor (331) by shaft coupling, from top to bottom respectively by screw by Z axis stepper motor installing plate (333), the upper mounting plate (334) of Z axis stepping mechanism (340), the rail plate (335) of Z axis stepping mechanism (340), slide block (337) on X-axis worm couple (332) and the lower installation board (336) of Z axis stepping mechanism (340) are fastening is an integral body, forward X-axis inching button (231), the PLC of negative sense X-axis inching button (232) in slave computer switch board (240) controls X-axis stepper motor (331), drive X-axis worm couple (332) to implement X-motion, PLC records X axis travel displacement
,slide block (338) is installed and is arranged on rail plate (335) above, its position can be adjusted according to the concrete size of test product and installation site.
5. the durability testing system of a kind of family expenses according to claim 1 and similar applications receptacle, it is characterized in that, described Z axis stepping mechanism (340) comprises slide block (343), plug fixed device (344) and the approach switch (345) on Z axis stepper motor (341), Z-axis transmission worm screw (342), Z axis stepper motor (341);
Plug fixed device (344) is fixed the corresponding plug of socket to be detected, approach switch (345) is arranged on installs the side that slide block (338) is upper, induction metal plate is arranged on plug fixed device (344), it is lower to flushing with edge under standard plug latch, the interrupting input end INT1 of the interior PLC of output signal access slave computer switch board (240) of approach switch;
Forward Z axis inching button (235), negative sense Z axis inching button (236) PLC in slave computer switch board (240) controls Z axis stepper motor (341), drives Z axis worm couple (342) to implement Z-motion; PLC records Z-axis direction travel displacement, according to approach switch installation parameter and the test speed parameter of user input, host computer generates " elevator speed " test curve tables of data of correction accordingly: the stepper motor pulsed frequency table of the Speed open-loop control of the sub-stroke of non-plug, plug the stepper motor umber of pulse of the displacement closed-loop control of sub-stroke; The sub-stroke of non-plug is plug from detecting initial point to the travel displacement of approach switch, the travel displacement when plugging sub-stroke and be approach switch to plug insertion socket and completing.
6. the durability testing system of a kind of family expenses according to claim 1 and similar applications receptacle, is characterized in that, described Y-axis stepping mechanism (350) comprises y-axis stepper motor (351) and Y-axis transmission worm screw (352);
Forward Y-axis inching button (233), negative sense Y-axis inching button (234) PLC in slave computer switch board (240) controls y-axis stepper motor (351), drives Y-axis worm couple (352) to implement Y-motion, realize gantry stand (320) in the motion of Y-axis, PLC records Y-axis travel displacement.
7. the durability testing system of a kind of family expenses according to claim 1 and similar applications receptacle, is characterized in that, described three-dimensional grips mechanism (360) comprises eight cross fishtail bolts (361) and two elastic clamping sheets (362);
Every cross fishtail bolt (361) is comprised of a stud, two set screw and a clamp with resilient material; The stud first half is column helicitic texture, and Lower Half is column smooth structure, and set screw is threadedly secured in the Lower Half of this bolt, and bolt bottom is cross dovetail structure, and clamp is fixed in set screw; Elastic clamping sheet (362) is a flat metal moulding, and respectively there is a through hole at its two ends, and cross fishtail bolt (361) is through in addition fastening with spring shim and nut after through hole, moulding middle part be adjacent to measured piece part also for resilient material, in order to increase clamping force; Measured piece is fixed on any one grid of latticed working plate (313), eight cross fishtail bolts (361) be take two as one group, respectively from X, Y-axis positive and negative two to clamping measured piece, guarantee the clamping of measured piece X, Y direction, tighten resilient material face that set screw makes clamp and be close to the bottom mounting box of measured piece, by fixing of eight cross fishtail bolts (361), assurance measured piece is fastening X, Y direction; Two elastic clamping sheets (362) respectively by spring shim and fastening nuts on two groups of cross fishtail bolts (361) of Y direction, measured piece is tightly fixed between latticed working plate (313) and elastic clamping sheet (362), guarantee the fixing of its Z-direction, thereby realize the stability of three-dimensional clamping and the uniqueness of locus; In durability test process, three-dimensional clamping has been stopped the socket displacement that plug process produces because of friction force, and displacement the test interruption and the secondary clamping that cause; During the test of same model socket, can omit the operation that crawl is determined socket X, Y, Z coordinate parameters.
8. the durability testing system of a kind of family expenses according to claim 1 and similar applications receptacle, is characterized in that, described slave computer control device is selected VB1-24MT PLC and YK2609MA stepper motor driver module; The RS485 port of VB1-24MT is connected with the RS485 port of industrial computer (101), accepts correction " elevator speed " curve data that host computer generates, and carries out the sub-travel speed open loop of efficient non-plug and controls; The interruptive port INT1 of the digital quantity signal access VB1-24MT of approach switch (345), interrupt response program is read in the stepper motor umber of pulse of the sub-travel displacement of plug that approach switch is corresponding, plugs accurately sub-travel displacement closed-loop control; Forward X-axis inching button (231), negative sense X-axis inching button (232), forward Y-axis inching button (233), negative sense Y-axis inching button (234), the digital quantity signal of forward Z axis inching button (235), negative sense Z axis inching button (236) accesses respectively digital quantity input port DI0, DI1, DI2, DI3, DI4 and the DI5 of VB1-24MT, crawl is controlled X-axis stepping mechanism (330), Z axis stepping mechanism (340) and Y-axis stepping mechanism (350), determines socket X, Y, Z coordinate parameters; VB1-24MT analog output end AI0, AI1 access respectively PU-, the DR-of the first stepping motor drive module, drive the X-axis stepper motor (331) of X-axis stepping mechanism; VB1-24MT analog output end AI2, AI3 access respectively PU-, the DR-of the second stepping motor drive module, drive the y-axis stepper motor (351) of Y-axis stepping mechanism; VB1-24MT analog output end AI4, AI5 access respectively PU-, the DR-of the 3rd stepper motor driver module, drive the Z axis stepper motor (341) of Z axis stepping mechanism.
9. an efficient conformance test method that uses family expenses as claimed in claim 1 and similar applications receptacle durability testing system, it is characterized in that, speed ~ the time of receptacle durability test Z axis stroke, acceleration ~ time curve is used for reference " ideal speed curve " that elevator industry is praised highly, from the acceleration visual angle of plug, consider the acceleration and deceleration process of plug stroke is divided into 7 stages: add accelerating sections, even accelerating sections, subtract accelerating sections, at the uniform velocity section, accelerating and decelerating part, even braking section, subtract braking section, and consider from the speed visual angle of plug, " ideal speed curve " is divided into again starting and accelerates, travel at the uniform speed and three sections of braking decelerations, simultaneously rise/retaining segment curve is mirror image symmetry, according to plug, whether contact, test stroke with socket and be divided into the sub-stroke of plug and the sub-stroke of non-plug, testing efficiency depends on the plug speed of the sub-stroke of non-plug, and the plug speed that plugs sub-stroke is related to measuring accuracy, " ideal speed curve " taken into account testing efficiency and measuring accuracy: the height of the plug S that tested the speed
no-insertthe low S that tested the speed of displacement, plug
insertdisplacement,
Consider the gap error of Electrified Transmission error and mechanical drive pair and the variation of electrical equipment parameter and the mechanical wear error that long-term test causes, presence bit shift error ± Δ S(Δ S>0 in test stroke); With regard to the Hang Ji Ju of the rigidity Zhi stepper motor of test macro, Δ S is huge on the impact of testing reliability, measuring accuracy: during+Δ S, while there will be great pressure even to crush socket or plug ,-Δ S between plug and socket, plug does not insert socket by standard-required does not cause test result serious distortion, the plug open loop based on " ideal speed curve " is controlled and revised: at S from home
insert+ Δ S place arranges approach switch, this test macro Δ S=5mm;
Definition 1: the sub-travel displacement of non-plug of correction is S
no-insert-Δ S=125mm-5mm=120 mm,
Definition 2: the sub-travel displacement of plug of correction is S
insert+ Δ S=25mm+5mm=30 mm;
The plug control algolithm of revising " ideal speed curve " is as follows:
(a), when plug insertion socket direction is moved, Ji Suan And stores S
insertstepper motor pulsed quantity N0, N=N0 that+Δ S is corresponding,
(b) the sub-travel displacement S of non-plug revising
no-insertwithin the scope of-Δ S, by stepper motor pulsed frequency f corresponding to " ideal speed curve ", the speed of open loop controller plug,
(c) the sub-travel displacement S of plug revising
insertwithin the scope of+Δ S, carry out the closed loop control algorithm of displacement--read the stepper motor pulsed frequency f that " ideal speed curve " is corresponding, displacement closed-loop control N=N-f*Ts is until N=0, and f is that stepper motor pulsed frequency, the Ts of corresponding ideal speed is the sampling period,
(d) when plug is extracted the motion of socket direction, the control algolithm while continuing to use the motion of plug insertion socket direction.
10. use an efficient conformance test method for family expenses as claimed in claim 1 and similar applications receptacle durability testing system, it is characterized in that the efficient consistency detecting method of permanance of receptacle is divided into: flow process and plug plug testing process are prepared in test;
Flow process is prepared in test: product to be tested is fixed on latticed working plate (313) from X-axis, Y-axis, Z-direction by three-dimensional clamping mechanism (360), plug fixed device (344) is fixed the corresponding plug of socket to be detected, while going up approach switch (345) is installed, making plug contact approach switch at Z axis stepping mechanism rail plate (335), plug, apart from socket 5mm, is inputted the installation site of approach switch on host computer;
By three axle point moving cells (230), make plug insertion socket, PLC record socket coordinate, test initial point to the Z axis travel displacement of approach switch is the sub-travel displacement S of non-plug
no-insert-z axis travel displacement when Δ S, approach switch to plug insertion socket complete plugs sub-travel displacement S
insert+ Δ S, host computer generates " elevator speed " test curve tables of data of correction accordingly: the stepper motor pulsed frequency table of the Speed open-loop control of the sub-stroke of non-plug, plug the stepper motor umber of pulse of the displacement closed-loop control of sub-stroke; By control module (220), regulate resistance, coil and the pressure regulator in slave computer switch board (240), the testing power supply of generation receptacle durability test standard regulation; Plug resets;
Plug plug testing process: X, Y-axis stepping mechanism are according to socket X, the Y coordinate setting plug of PLC record, correction " elevator speed " the test curve tables of data that Z axis stepping mechanism generates according to host computer is carried out the Speed open-loop control of the sub-stroke of non-plug, plug during through approach switch, approach switch output PLC look-at-me, proceeds to the displacement closed-loop control of correction " elevator speed " the test curve tables of data of the sub-stroke of non-plug; Plug withdrawal process and insertion process be mirror image each other, and at measured piece, without extremely and do not arrive before set point number, program loop is carried out the sub-stroke of non-plug with the sub-stroke of plug until test is ended.
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