CN204535723U - A kind of dynamic precision hydro-extractor system - Google Patents
A kind of dynamic precision hydro-extractor system Download PDFInfo
- Publication number
- CN204535723U CN204535723U CN201520244896.8U CN201520244896U CN204535723U CN 204535723 U CN204535723 U CN 204535723U CN 201520244896 U CN201520244896 U CN 201520244896U CN 204535723 U CN204535723 U CN 204535723U
- Authority
- CN
- China
- Prior art keywords
- test specimen
- precision
- servo motor
- specimen mounting
- dynamic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Centrifugal Separators (AREA)
Abstract
The utility model discloses a kind of dynamic precision hydro-extractor system, comprise casing, precision centrifuge, Measurement &control computer, rotating servo motor, two test specimen mounting platforms and two are for detecting the Displacement Feedback device of described test specimen mounting platform position, the rotating disk of described precision centrifuge is installed with radome fairing, described rotating servo motor is arranged on the center of turntable of described precision centrifuge, described rotating servo motor is connected with servo-driver by collector ring, described servo-driver is connected with described Measurement &control computer, the torque output shaft at described rotating servo motor two ends is symmetrically connected with the contrary ball screw assembly, of the hand of spiral, two described test specimen mounting platforms are arranged on the described ball screw assembly, at described rotating servo motor two ends respectively, described test specimen mounting platform is connected with described ball screw assembly, worm drive.The utility model has dynamic precision centrefuge experiment ability, simply can realize the acceleration field dynamic precision output procedure required by dynamic precision centrefuge experiment.
Description
Technical field
The utility model relates to hydro-extractor acceleration test technical field, particularly relates to a kind of dynamic precision hydro-extractor system.
Background technology
Precision centrifuge is one of stable state inertial navigation testing tool demarcated for inertial navigation accelerometer and calibrate.Precision centrifuge utilizes precision electric motor to drive large inertia pivoted arm or turntable (compared to motor driving force) to produce high precision speed stabilizing and rotates the accurate centripetal acceleration of output, thus provides the acceleration field environment of high stability to tested inertial navigation accelerometer.
Dynamic centrifugal machine is one of the dynamic inertial navigation testing tool for the performance test of inertia components and parts and Reliability Check.Dynamic centrifugal machine utilizes high pulling torque dragging motor to drive little inertia pivoted arm or turntable (compared to motor driving force) to realize the high dynamic change of centrifuge speed, thus provides the acceleration field environment of high rate of change to tested inertia components and parts.
Precision centrifuge and dynamic centrifugal machine are respectively used to carry out dissimilar centrifugal acceleration and test traditionally.Tradition precision centrifuge is typical stable state centrefuge experiment equipment, the acceleration field environment of high stability can be provided, the precision of its output stable state acceleration field of main concern and uncertainty index, but dragging motor driving force is lower, lacks dynamic acceleration curve tracking test ability.Conventional dynamic hydro-extractor is then typical dynamic centrifugal experimental facilities, the acceleration field environment of high rate of change can be produced, acceleration dynamic change rate and the dynamic tracking accuracy of acceleration are the key technical indexes that it is paid close attention to, but owing to being limited to its design feature, self rotary inertia is less, is difficult to meet high-precision stable state centrifugal acceleration experiment demand.Traditional precision centrifuge and dynamic centrifugal machine all only complete acceleration by control system rotating speed and export and adjust, precision centrifuge exports to realize high-precision acceleration, and the general disc type turntable of large inertia that adopts promotes speed stability, its rotary inertia (unit: kgm
2) be generally greater than 3,10 with the ratio of dragging system nominal torque (unit: Nm)
- 5in the precision centrifuge of above precision magnitude, this ratio is even close to 10, and after considering effective radius of turn (≤1m) that windage effect and precision centrifuge are less, the maximum rate of change of rotating speed of precision centrifuge system is generally all at 0.1rad/s
2~ 0.3rad/s
2between, this makes the acceleration exporting change rate of precision centrifuge be difficult to more than 0.5g/s, will low at least one the order of magnitude compared to the rate of acceleration change (> 5g/s) carried out required by dynamic centrifugal experiment, the mentality of designing of dynamic centrifugal machine is contrary with precision centrifuge, in order to obtain the acceleration high rate of change of carrying out required by dynamic centrifugal experiment, needs quick change system rotating speed, the rotary inertia (unit: kgm of dynamic centrifugal machine
2) be generally less than 1 with the ratio of dragging system nominal torque (unit: Nm), the intrinsic torque pulsation of dragging motor and the moment of torsion output bias of servo drive system will cause larger impact to hydro-extractor system rotating stability thus, this makes the stable state accuracy of conventional dynamic hydro-extractor generally all be inferior to 0.2%, simultaneously, promote the dynamic tracking accuracy of acceleration of dynamic centrifugal machine, need system to realize accurate torsion loop to control, due to the position in servo-drive system in---rotating speed---electric current (moment of torsion) three layers of closed loop controlling structure, the control accuracy of electric current (moment of torsion) ring is minimum, therefore, the dynamic tracking accuracy of acceleration of conventional dynamic hydro-extractor generally only can reach 5%.
Tradition precision centrifuge can only export the acceleration field environment of low rate of change, is difficult to meet the demand of carrying out dynamic centrifugal experiment; Conventional dynamic hydro-extractor can only produce the stable state acceleration field environment of lower accuracy, and the dynamic tracking accuracy of its acceleration is directly limited to the moment ring control accuracy of servo drive system, is difficult to the demand meeting the experiment of high precision centrifugal acceleration; To sum up, traditional precision centrifuge and dynamic centrifugal machine all cannot be provided for the acceleration field environment carrying out dynamic precision centrefuge experiment.
Utility model content
The purpose of this utility model is just to provide a kind of dynamic precision hydro-extractor system to solve the problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of dynamic precision hydro-extractor system, comprise casing, precision centrifuge, Measurement &control computer, rotating servo motor, two test specimen mounting platforms and two are for detecting the Displacement Feedback device of described test specimen mounting platform position, the rotating disk of described precision centrifuge is installed with radome fairing, described rotating servo motor is arranged on the center of turntable of described precision centrifuge, described rotating servo motor is connected with servo-driver by collector ring, described servo-driver is connected with described Measurement &control computer, the torque output shaft at described rotating servo motor two ends is symmetrically connected with the contrary ball screw assembly, of the hand of spiral, two described test specimen mounting platforms are arranged on the described ball screw assembly, at described rotating servo motor two ends respectively, described test specimen mounting platform is connected with described ball screw assembly, worm drive.
Further, described rotating servo motor, described ball screw assembly, described Displacement Feedback device and described test specimen mounting platform are all placed in described radome fairing, on the housing, the turning end of described collector ring is fixedly connected with the center of described radome fairing in the stiff end fixed installation of described collector ring.
Further, described rotating servo motor is twin shaft output motor.
Further, described Measurement &control computer and described servo-driver are arranged in ground.
Preferably, described Displacement Feedback device is linear grating chi, the rotating disk that described linear grating chi is laid in described precision centrifuge is positioned at the below of described ball screw assembly, described linear grating chi is parallel with the transmission direction of described ball screw assembly, two described test specimen mounting platforms corresponding described linear grating chi respectively, the grating reading head of two described linear grating chis is separately positioned on two described test specimen mounting platforms, the displacement data output terminal of two described grating reading heads is connected with two displacement data input ends of described collector ring respectively, the madial wall at described radome fairing top is provided with the spool of the order wire for arranging described grating reading head.
Preferably, described Displacement Feedback device is laser displacement sensor, two described test specimen mounting platforms corresponding described laser displacement sensor respectively, the laser probe of two described laser displacement sensors is installed on described rotating servo motor, the reflecting plate of two described laser displacement sensors is arranged on two described test specimen mounting platforms respectively, and laser probe and the reflecting plate of each described laser displacement sensor all align.
The beneficial effects of the utility model are:
1, based on traditional rotating disc type precision centrifuge, there is the dynamic centrifugal experimental ability that traditional precision centrifuge does not possess, also possess the rotating speed control accuracy being much better than conventional dynamic hydro-extractor;
2, no longer need in the process completing dynamic centrifugal experiment as conventional dynamic hydro-extractor the high pulling torque dragging motor that adopts, uses a low moment of torsion elaborate servo motor to coordinate a set of miniature high-speed motor---high-speed guide screw subsystem can realize dynamic centrifugal test required by acceleration field dynamical output;
3, when testing, the control accuracy of acceleration field is higher, and control accuracy is higher than der Geschwindigkeitkreis required in traditional dynamic centrifugal machine and moment ring (electric current loop) control accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of dynamic precision hydro-extractor system described in the utility model when being provided with linear grating chi;
Fig. 2 is the structural representation that dynamic precision hydro-extractor system described in the utility model is provided with laser displacement sensor;
Fig. 3 is laser displacement sensor described in the utility model, described test specimen mounting platform, positional structure schematic diagram between described rotating servo motor and described ball screw assembly;
In figure: 1-precision centrifuge, 2-rotating servo motor, 3-collector ring, 4-ball screw assembly, 5-linear grating chi, 6-grating reading head, 7-test specimen, 8-test specimen mounting platform, 9-spool, 10-servo-driver, 11-Measurement &control computer, 12-casing, 13-radome fairing, 14-laser probe, 15-reflecting plate.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As Fig. 1, shown in Fig. 2 and Fig. 3, the utility model comprises casing 12, precision centrifuge 1, Measurement &control computer 11, rotating servo motor 2, two test specimen mounting platforms 8 and two are for detecting the Displacement Feedback device of test specimen mounting platform 8 position, the rotating disk of precision centrifuge 1 is installed with radome fairing 13, rotating servo motor 2 is arranged on the center of turntable of precision centrifuge 1, rotating servo motor 2 is connected with servo-driver 10 by collector ring 3, servo-driver 10 is connected with Measurement &control computer 11, the torque output shaft at rotating servo motor 2 two ends is symmetrically connected with the contrary ball screw assembly, of the hand of spiral 4, two test specimen mounting platforms 8 are arranged on the ball screw assembly, 4 at rotating servo motor 2 two ends respectively, test specimen mounting platform 8 is connected with ball screw assembly, 4 worm drive.
The utility model should select the precision centrifuge 1 of corresponding accuracy class according to the technical requirement of dynamic precision centrefuge experiment, based on precision centrifuge 1, system can realize high-precision stable rotation.Rotating servo motor 2 is twin shaft output motor, rotating servo motor 2 realizes being connected with the power electric of servo-driver 10 by collector ring 3, the ball screw assembly, 4 at two ends is installed in opposite directions with clockwise and counter-clockwise respectively, and during to guarantee that rotating servo motor 2 operates, two ball screw assembly,s 4 can produce the contrary expulsive force in direction.When rotating servo motor 2 operates, two test specimen mounting platforms 8 will do reverse sync motion, thus guarantee the transient equilibrium of hydro-extractor system.
Rotating servo motor 2, ball screw assembly, 4, Displacement Feedback device and test specimen mounting platform 8 are all placed in radome fairing 13, the stiff end of collector ring 3 is fixedly mounted on casing 12, the turning end of collector ring 3 is fixedly connected with the center of radome fairing 13, and the turning end of radome fairing 13, collector ring 3 is rotated or static together with the rotating disk of precision centrifuge 1.Radome fairing 13 is installed and can reduces windage suffered by system, and avoid adjusting precision centrifuge 1 effectively the radius of clean-up time change because test specimen mounting platform 8 windward side radius of turn changes the windage caused.
Measurement &control computer 11 and servo-driver 10 are arranged in ground, test specimen mounting platform 8 displacement according to Displacement Feedback device feedback controls rotating servo motor 2, complete the precision centrifuge 1 effectively radius of clean-up, namely test specimen 7 is to the real-time adjustment of precision centrifuge 1 rotary main shaft, realizes the dynamic change of acceleration field suffered by test specimen 7.
Embodiment 1: Displacement Feedback device is linear grating chi 5, the rotating disk that linear grating chi 5 is laid in precision centrifuge 1 is positioned at the below of ball screw assembly, 4, linear grating chi 5 is parallel with the transmission direction of ball screw assembly, 4, two test specimen mounting platforms 8 corresponding linear grating chi 5 respectively, the grating reading head 6 of two linear grating chis 5 is separately positioned on two test specimen mounting platforms 8, the displacement data output terminal of two grating reading heads 6 is connected with two displacement data input ends of collector ring 3 respectively, the madial wall at radome fairing 13 top is provided with the spool 9 of the order wire for arranging grating reading head 6.Grating reading head 6 carries out data read operation, and gained Displacement Feedback is delivered in servo-driver 10 through collector ring 3 and completes servo closed loop.
Embodiment 2: Displacement Feedback device is laser displacement sensor, two test specimen mounting platforms 8 corresponding laser displacement sensor respectively, the laser probe 14 of two laser displacement sensors is installed on rotating servo motor 2, the reflecting plate 15 of two laser displacement sensors is arranged on two test specimen mounting platforms 8 respectively, laser probe 14 and the reflecting plate 15 of each laser displacement sensor all align, and laser displacement sensor gained Displacement Feedback passes to servo-driver 10 through collector ring 3 equally.
Dynamic precision hydro-extractor system described in the utility model, wherein the part of appliance such as precision centrifuge 1, rotating servo motor 2, ball screw assembly, 4, Displacement Feedback device, collector ring 3 (power slip ring and signal slip ring), servo-driver 10, Measurement &control computer 11 is the open instrument and equipment of different field, by these equipment with disc type precision centrifuge 1 for architecture basics, be assembled into dynamic precision hydro-extractor system of the present utility model.For inertial navigation accelerometer or the demarcation of inertia components and parts of different accuracy class requirement, selected instrument and equipment and the structure member manufactured and designed should meet respective level index request.
Dynamic precision hydro-extractor system described in the utility model, the principal element of influential system performance is as follows:
1) precision centrifuge 1 maximum (top) speed ω
max; (rad/s)
2) the minimum radius of turn R of test specimen 7
min, maximum radius of turn R
max; (m)
3) rotating servo motor 2---the maximum movement speed V of ball screw assembly, 4 system
max; (m/s)
4) rotating servo motor 2---the peak acceleration a of ball screw assembly, 4 system
max; (m/s
2)
5) rotating servo motor 2---the Bit andits control resolution u of ball screw assembly, 4 system
s; (m)
6) rotating servo motor 2---the wire velocity control resolution u of ball screw assembly, 4 system
v; (m/s)
7) rotating servo motor 2---the maximum output F of ball screw assembly, 4 system
max; (N)
8) monolateral test specimen mounting platform 8 and fixture quality m.(kg)
Corresponding system main performance index is as follows:
1) the maximum output area of system acceleration:
(adjustment precision centrifuge 1 rotating speed can obtain different system acceleration output areas);
2) system exports the maximum gaining rate of acceleration:
(adjustment precision centrifuge 1 rotating speed can obtain different systems and export the maximum gaining rate of acceleration);
3) system exports the maximum curvature of accelerating curve:
(adjustment precision centrifuge 1 rotating speed can obtain the maximum curvature that different systems exports accelerating curve);
4) system exports the relative resolution of acceleration: u
s/ (R
max-R
min);
5) system exports the relative resolution of acceleration gaining rate: u
v/ V
max;
6) the installable monolateral test specimen limiting quanlity of system:
(for guaranteeing that system possesses enough dynamic acceleration load capabilities, should guarantee that certain system is exerted oneself redundance).
The operating process of dynamic precision hydro-extractor system described in the utility model is as follows:
1) two test specimens 7 are arranged on two test specimen mounting platforms 8 respectively, and utilize special sectional fixture to be fixed, measure the distance of test specimen center and Displacement Feedback device feedback point, to compensate displacement ultramagnifier gained Displacement Feedback amount based on this measurement result in experimentation thereafter, obtain the true radius of turn of test specimen;
2) accelerating curve required by dynamic precision centrefuge experiment, the working speed of setting precision centrifuge 1, guarantees that system enables the acceleration range be loaded on test specimen cover accelerating curve required by dynamic precision centrefuge experiment by adjusting the radius of turn of test specimen 7;
3) precision centrifuge 1 is driven to run according to predetermined work rotating speed;
4) accelerating curve a (t) required by dynamic precision centrefuge experiment
,calculate corresponding test specimen 7 radius of turn change curve R (t)
,in this, as the displacement commands of the kinematic train that rotating servo motor 2 and ball screw assembly, 4 are formed;
5) radius of turn completing test specimen by the rotary actuation lead screw pair system controlling rotating servo motor 2 according to test specimen 7 radius of turn change curve R (t) regulates, thus obtains accelerating curve a (t) required by dynamic precision centrefuge experiment.
Guarantee that acceleration range can cover the method for the accelerating curve required by dynamic precision centrefuge experiment as follows:
1): the maximum centrifugal accekeration a suffered by accelerating curve determination test specimen required by dynamic precision centrefuge experiment
max;
2) according to maximum effective radius of clean-up R that dynamic precision centrefuge experiment system can reach
maxcalculate the working speed required for hydro-extractor system
If linear grating chi 5 selected by Displacement Feedback device, then because linear grating chi 5 can produce deformation because of the impact of acceleration field, eliminate influence of crust deformation, can adopt the high precision acceleration transducer demarcated under specific rotation speeds, the method of being installed radius by acceleration and centrifuge speed measured value inverse test specimen obtains the deformation amplification coefficient of linear grating chi 5 under acceleration field environment, and reduces the influence of crust deformation of linear grating chi 5 under acceleration field environment as far as possible by compensating approach.
The key point of dynamic precision hydro-extractor system described in the utility model is as follows:
1) on traditional precision centrifuge 1, increase test specimen 7 effectively radius of turn governor motion, remain unchanged carrying out precision centrifuge 1 rotating speed in dynamic precision centrefuge experiment process, by means of only the accelerating curve regulating effective radius of turn of test specimen 7 to obtain requirement of experiment;
2) the acceleration field regulative mode of hydro-extractor system is become from traditional control rotating speed control test specimen 7 effectively radius of turn, thus the corresponding relation of control objectives (system rotating speed, radius of turn) and acceleration field is changed into the linear relationship of 1 product from the nonlinear relationship of 2 times squares;
3) moving parts is arranged symmetrically with along precision centrifuge 1 rotating disk axis, two lead screw pair assemblies are oppositely installed, system only drives the displacement movement getting final product synchro control two test specimen mounting platforms 8 with a rotating servo motor 2, thus remains the trim condition of system.
Dynamic precision hydro-extractor system described in the utility model has the following advantages:
1) based on traditional rotating disc type precision centrifuge 1, there is the dynamic centrifugal experimental ability that traditional precision centrifuge does not possess, also possess the rotating speed control accuracy being much better than conventional dynamic hydro-extractor;
2) the art of this patent method is adopted, complete dynamic centrifugal experiment no longer need as conventional dynamic hydro-extractor the high pulling torque dragging motor that adopts, uses a low moment of torsion elaborate servo motor to coordinate a set of miniature high-speed motor---high-speed guide screw subsystem can realize dynamic centrifugal test required by acceleration field dynamical output;
3) compared with traditional dynamic centrifugal machine, the acceleration field Drazin inverse mode of hydro-extractor system is controlled to become test specimen radius of turn from rotating speed and controls by the art of this patent method, thus the corresponding relation of control objectives (system rotating speed, radius of turn) and acceleration field is changed linear relationship in order to 1 product from the nonlinear relationship of 2 times squares, contribute to the raising of acceleration field control accuracy;
4) the dynamic tracking accuracy of the acceleration field stable state accuracy of the art of this patent method, acceleration field dynamic change rate and acceleration field curve is by servomotor---and displacement ring, the der Geschwindigkeitkreis control accuracy of lead screw pair system determine, control accuracy is higher than der Geschwindigkeitkreis, moment ring (electric current loop) control accuracy required in traditional dynamic centrifugal machine.
These are only preferred embodiment of the present utility model, not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included in protection domain of the present utility model.
Claims (6)
1. a dynamic precision hydro-extractor system, comprise casing, precision centrifuge and Measurement &control computer, it is characterized in that: also comprise rotating servo motor, two test specimen mounting platforms and two are for detecting the Displacement Feedback device of described test specimen mounting platform position, the rotating disk of described precision centrifuge is installed with radome fairing, described rotating servo motor is arranged on the center of turntable of described precision centrifuge, described rotating servo motor is connected with servo-driver by collector ring, described servo-driver is connected with described Measurement &control computer, the torque output shaft at described rotating servo motor two ends is symmetrically connected with the contrary ball screw assembly, of the hand of spiral, two described test specimen mounting platforms are arranged on the described ball screw assembly, at described rotating servo motor two ends respectively, described test specimen mounting platform is connected with described ball screw assembly, worm drive.
2. dynamic precision hydro-extractor system according to claim 1, it is characterized in that: described rotating servo motor, described ball screw assembly, described Displacement Feedback device and described test specimen mounting platform are all placed in described radome fairing, on the housing, the turning end of described collector ring is fixedly connected with the center of described radome fairing in the stiff end fixed installation of described collector ring.
3. dynamic precision hydro-extractor system according to claim 1, is characterized in that: described rotating servo motor is twin shaft output motor.
4. dynamic precision hydro-extractor system according to claim 1, is characterized in that: described Measurement &control computer and described servo-driver are arranged in ground.
5. dynamic precision hydro-extractor system according to claim 1, it is characterized in that: described Displacement Feedback device is linear grating chi, the rotating disk that described linear grating chi is laid in described precision centrifuge is positioned at the below of described ball screw assembly, described linear grating chi is parallel with the transmission direction of described ball screw assembly, two described test specimen mounting platforms corresponding described linear grating chi respectively, the grating reading head of two described linear grating chis is separately positioned on two described test specimen mounting platforms, the displacement data output terminal of two described grating reading heads is connected with two displacement data input ends of described collector ring respectively, the madial wall at described radome fairing top is provided with the spool of the order wire for arranging described grating reading head.
6. dynamic precision hydro-extractor system according to claim 1, it is characterized in that: described Displacement Feedback device is laser displacement sensor, two described test specimen mounting platforms corresponding described laser displacement sensor respectively, the laser probe of two described laser displacement sensors is installed on described rotating servo motor, the reflecting plate of two described laser displacement sensors is arranged on two described test specimen mounting platforms respectively, and laser probe and the reflecting plate of each described laser displacement sensor all align.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520244896.8U CN204535723U (en) | 2015-04-21 | 2015-04-21 | A kind of dynamic precision hydro-extractor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520244896.8U CN204535723U (en) | 2015-04-21 | 2015-04-21 | A kind of dynamic precision hydro-extractor system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204535723U true CN204535723U (en) | 2015-08-05 |
Family
ID=53749714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520244896.8U Expired - Fee Related CN204535723U (en) | 2015-04-21 | 2015-04-21 | A kind of dynamic precision hydro-extractor system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204535723U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776862A (en) * | 2015-04-21 | 2015-07-15 | 中国工程物理研究院总体工程研究所 | Dynamic precision centrifuge system and testing method thereof |
| CN108480065A (en) * | 2018-06-07 | 2018-09-04 | 中国工程物理研究院总体工程研究所 | Dynamic trimming system and the centrifuge for having dynamic trimming system |
| CN111629833A (en) * | 2018-01-25 | 2020-09-04 | 株式会社久保田制作所 | Centrifugal separator |
-
2015
- 2015-04-21 CN CN201520244896.8U patent/CN204535723U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776862A (en) * | 2015-04-21 | 2015-07-15 | 中国工程物理研究院总体工程研究所 | Dynamic precision centrifuge system and testing method thereof |
| CN111629833A (en) * | 2018-01-25 | 2020-09-04 | 株式会社久保田制作所 | Centrifugal separator |
| CN108480065A (en) * | 2018-06-07 | 2018-09-04 | 中国工程物理研究院总体工程研究所 | Dynamic trimming system and the centrifuge for having dynamic trimming system |
| CN108480065B (en) * | 2018-06-07 | 2024-01-30 | 中国工程物理研究院总体工程研究所 | Dynamic balancing system and centrifugal machine with dynamic balancing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104776862A (en) | Dynamic precision centrifuge system and testing method thereof | |
| CN105403832B (en) | A kind of stepper motor comprehensive performance testing system | |
| US7634381B2 (en) | Position control arrangement, especially for a surveying instrument, and a surveying instrument | |
| CN102435944B (en) | Method for testing force characteristic of linear electric motor | |
| US7765084B2 (en) | Position control arrangement, especially for a surveying instrument, and a surveying instrument | |
| CN105373143B (en) | A kind of large-scale astronomical telescope high-precision control system and method for inhibiting wind load disturbance | |
| CN102999048B (en) | A kind of method of servo-controlling of vehicle-mounted moving pedestal photoelectric search tracking table | |
| CN103485764B (en) | Calibrating device and calibrating method for borehole clinometer | |
| CN204535723U (en) | A kind of dynamic precision hydro-extractor system | |
| JPH0230522B2 (en) | ||
| CN110460277A (en) | Single motor servo system friction non-linear compensation method based on particle swarm algorithm | |
| CN108717304B (en) | Synchronous fatigue loading control system and method for multiple vibration exciters of wind turbine blade | |
| CN105547219A (en) | Linear and angular displacement sensor measurement system and method | |
| CN103713520B (en) | A kind of self-adaptation composite control method of gyrostabilized platform | |
| JPH0146812B2 (en) | ||
| CN103528813A (en) | Rubbing experimental device of blade-coating machine case | |
| CN102507060A (en) | Torque calibration device used for passive motor-driven loading system | |
| US4366422A (en) | Velocity sensing pulse pair servo apparatus | |
| CN110767060A (en) | Nuclear reactor rod control system experimental device and experimental method thereof | |
| CN104808699A (en) | Servo control method based on gear mechanism | |
| CN112504527B (en) | Small-sized stable platform friction torque testing method based on force balance | |
| CN109871044A (en) | A kind of rotating-speed tracking method and device | |
| CN2911606Y (en) | Bounded detection fast measurer for tunnel | |
| CN103591967A (en) | Method for generating optical Chirp signal for optical servo system frequency spectrum curve tests | |
| CN102072796B (en) | Solar battery array dynamic-measurement system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20180421 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |