CN118347628A - Universal power calibration platform and automatic calibration system - Google Patents
Universal power calibration platform and automatic calibration system Download PDFInfo
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- CN118347628A CN118347628A CN202410777100.9A CN202410777100A CN118347628A CN 118347628 A CN118347628 A CN 118347628A CN 202410777100 A CN202410777100 A CN 202410777100A CN 118347628 A CN118347628 A CN 118347628A
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Abstract
The invention discloses a general power calibration platform and an automatic calibration system, wherein the general power calibration platform comprises: the power output main module, install the reference line laser lamp at main module front end, 2 parallel horizontal bracing pieces of main module below, the horizontal adjusting screw module of being connected between horizontal bracing piece and the main module, be located 2 parallel longitudinal support bars of horizontal bracing piece below, the slip locking frame of installing respectively in two longitudinal support bar side T type inslot, every longitudinal support bar handle of front end installation and 2 truckles of installing on the last horizontal bracing piece. Direct calibration to different dynamometer equipment can be realized through direct adjustment frame size and change terminal adapter, and special fixture head of crank is still provided to inconvenient equipment of dismantling the crank, and automatic calibration system can compromise commonality and work efficiency, also realizes setting for specific operating mode simultaneously.
Description
Technical Field
The invention belongs to the field of sports health and medical rehabilitation, and particularly relates to a universal power calibration platform and an automatic calibration system.
Background
The power calibration table is detection equipment required by human body dynamometer equipment (such as a power vehicle) in the fields of sports health and medical rehabilitation and is used for calibrating the power detection precision of various dynamometer equipment. However, due to the fact that the sizes and the shapes of various human body dynamometer devices are quite different, each manufacturer usually customizes and develops a corresponding power calibration table for a certain model product, and if the general purpose needs to be achieved among different models, the power calibration table is greatly changed. In addition, if automatic calibration is required to be realized, the working efficiency of dotting calibration is improved, or the performance of power adjustment is verified, a set of automatic calibration system matched with a calibration table is required to be developed at the same time, and communication remote control with a power vehicle is required. However, the power car communication protocols of various manufacturers are not uniform, and more software development cost is required to adapt to various power cars.
Disclosure of Invention
In order to solve the technical problems, the invention provides a universal power calibration platform, which comprises: the power output main module, a reference line laser lamp arranged at the front end of the main module, 2 parallel transverse support rods below the main module, a transverse adjusting screw rod module connected between the transverse support rods and the main module, 2 parallel longitudinal support rods below the transverse support rods, sliding locking frames respectively arranged in T-shaped grooves on the side surfaces of the two longitudinal support rods, a handle arranged at the forefront end of each longitudinal support rod and 2 casters arranged on one transverse support rod at the rearmost end;
The main module body is a metal frame body, a side cover plate is respectively arranged at the left and right sides, a top cover plate is arranged above the main module body, the bottom of the frame body is fixedly provided with front and rear 2 module transverse sliding plates, the transverse sliding plates are arranged in T-shaped grooves on the top surfaces of the transverse supporting rods through sliding plate locking pieces at two ends, the sliding plate locking pieces can slide left and right under the loosening condition, and a servo motor driver is fixed on the rear side transverse sliding plates and is connected with a servo motor through cables;
The front end of the frame body is provided with a front mounting plate, the inner side of the front mounting plate is provided with a lifting slide plate, the surface of the lifting slide plate is provided with a plurality of kidney-shaped bosses which are mutually matched with corresponding long round grooves arranged on the front mounting plate to realize up-and-down sliding, and the lifting slide plate is fixed through lifting plate locking pieces in threaded fit with the kidney-shaped bosses;
The servo motor is matched with the speed reducer, the speed reducer is mounted on the lifting slide plate in a transitional manner through a speed reducer fixing plate, the speed reducer is hollow in output, is matched with one end shaft of the dynamic torque sensor through a key, and the other end of the dynamic torque sensor penetrates through the lifting slide plate and is connected with an output shaft of the main module through a key shaft sleeve;
The output shaft of the main module is arranged in an output bearing seat through a bearing group, the bearing seat is fixed on a lifting slide plate, the outer end of the output shaft of the main module is a hexagonal shaft which is in clearance fit with a hexagonal sleeve, and the other end of the hexagonal sleeve can be selectively matched with connectors of various specifications or clamp heads special for cranks.
The invention also provides an automatic calibration system which is matched with the power calibration platform for use, wherein the automatic calibration system comprises computer end software, a USB-RS485 adapter wire is used for connecting a servo motor driver and a communication interface of a dynamic torque sensor respectively through a computer end USB interface, then a USB can be converted into a communication mode corresponding to target dynamometer equipment according to the needs through a USB-serial hub, and then connection is established with the target dynamometer equipment.
The power calibration method of the universal power calibration platform provided by the invention comprises the following steps:
s1: loosening fastening screws of the longitudinal support rods, adjusting the distance between the longitudinal support rods to enable the distance to be matched with the distance between the front foot margin and the rear foot margin of the load target dynamometer equipment, and then fastening again;
S2: carrying target dynamometer equipment to a longitudinal supporting rod, loosening a transverse sliding plate locking piece and a lifting plate locking piece of a main unit, respectively adjusting a lifting screw rod hand wheel and a transverse adjusting hand wheel to enable an output shaft of a main module to be aligned with a power input center shaft of the dynamometer equipment, and locking the transverse sliding plate locking piece and the lifting plate locking piece;
S3: a joint matched with a central shaft of the dynamometer equipment is arranged in a hexagonal sleeve of the output shaft, the dynamometer equipment is moved to be close to the calibration platform, the joint is connected with the central shaft of the target dynamometer equipment, a cross rod at the bottom of the target dynamometer equipment is inserted into the sliding locking frame, the body of the target dynamometer equipment is adjusted to be parallel to the reference line according to a ground reference line projected by the reference line laser lamp, and then the sliding locking frame is locked;
S4: connecting a communication line of the servo motor driver and the dynamic torque sensor with a computer, and connecting a remote control communication line of the target dynamometer equipment with the computer;
S5: according to the communication protocol and dotting flow of the dynamometer equipment, writing a configuration file, wherein the content of the configuration file comprises the serial port configuration of the dynamometer equipment, a time point, a power instruction and the motor rotating speed;
s6: the automatic calibration system reads the setting data in the configuration file in sequence, is connected with the dynamometer, sends a power instruction to the dynamometer at a specific time point, adjusts the rotating speed of the motor, records the average value of the dynamic torque sensor in the previous time period, and calculates the measured power according to the torque and the speed;
s7: the automatic calibration system arranges the set power, the speed, the torque, the calculated measured power and the error into a table file and outputs the table file;
s8: after the target dynamometer equipment is calibrated, a power adjustment performance verification program is operated, and parameters of precision, hysteresis ratio and overshoot ratio are calculated.
The invention has the following beneficial technical effects:
The invention designs and manufactures a universal power calibration platform and an automatic calibration system, can realize direct calibration of different power measurement equipment by directly adjusting the size of a frame and replacing a tail end adapter, also provides a special fixture head for the crank for equipment inconvenient to disassemble the crank, further develops a set of automatic calibration system which is free from secondary development and can be suitable for most power measurement equipment, has universality and working efficiency, and simultaneously realizes the setting of specific working conditions, and verifies parameters such as constant power adjustment time, precision, overshoot and the like of power detection equipment. The invention has simple product shape, is provided with casters to facilitate movement, and is suitable for new product research and development of power measuring equipment manufacturers and product performance verification of quality inspection institutions.
The power output main module is designed to be almost totally enclosed (except for a rear cover plate, a communication line is conveniently externally connected, namely a power supply), and aims to reduce electromagnetic interference to tested equipment in the working engineering of a servo motor; the invention is provided with the handle and the casters which are respectively positioned at the two ends (the front and the rear) of the longest dimension of the whole body, so that the lifting is most labor-saving, the casters are not grounded in the landing state, and when the handle is lifted by a person, the casters are naturally supported in the landing state, so that a single person can realize the power transfer calibration platform.
The output shaft of the power main module is made into the movable joint hexagonal sleeve, and the corresponding adapter is replaced, so that the movable joint hexagonal sleeve can be conveniently in butt joint with the central shaft of various power vehicles in a minimum modification mode, and the universal locking coupler can be directly connected with the excircle of the hexagonal sleeve for target equipment which has large appearance difference and cannot be aligned.
Aiming at the problem that the power measuring equipment with the crank is inconvenient to detach, the invention also designs a special clamp head for the crank, and can clamp cranks with different thicknesses by replacing the rubber clamping piece stuck inside, and the tail end of the hexagon head connecting rod is designed as a ball head so as to be capable of tolerating angle errors caused by the non-concentricity between the crank rotation center of the power measuring equipment and the output shaft of the calibration platform in the clamping process.
The reference line laser lamp projects a laser line parallel to the front end face of the power main module (perpendicular to the direction of the output shaft), and the adjustment of the distance of parallel lines on the ground can be realized by adjusting the angle of the laser lamp, so that the vehicle body placement reference of target equipment is facilitated.
The USB-serial port hub for connecting the PC end automatic calibration software and the target dynamometer equipment is of an independent design, has functions of USB-232 conversion, USB-485 conversion and USB-low-power consumption Bluetooth conversion, and can realize different communication conversion modes by connecting different interfaces and switching functional gears.
Drawings
FIG. 1 is a general outline view of a power calibration platform;
FIG. 2 is a diagram of the external components of the power output main module;
FIG. 3 is a diagram of the internal components of the power output main module;
FIG. 4 is a partial output shaft part diagram of the power output main module;
FIG. 5 is a partial cross-sectional view of an output shaft of the power output main module;
FIG. 6 is a detailed schematic view of a lateral adjustment screw module;
FIG. 7 is a schematic diagram of a reference line laser lamp;
FIG. 8 shows two adapters for the central axis of different target dynamometer equipment, for the hexagonal axis and the square axis, respectively;
FIG. 9 is a schematic view of a fixture head for directly clamping a dynamometer rig crank;
FIG. 10 is a schematic diagram of a clamping for calibrating a target dynamometer equipment (power car);
FIG. 11 is a schematic diagram of a physical communication connection of the automatic calibration system;
Fig. 12 is a graph of actual power versus target power regulation process during a power regulation performance verification process.
The number designations in the drawings, 1-main module, 2-reference line laser lamp, 3-slide lock frame, 4-handle, 5-longitudinal support bar, 6-lateral support bar, 7-caster, 8-lateral adjustment screw module, 101-frame body, 102-slide lock, 103-module lateral slide, 104-motor driver, 105-side cover plate, 106-front mounting plate, 107-lift slide, 108-speed reducer fixing plate, 109-dynamic torque sensor, 110-speed reducer, 111-servo motor, 112-lift screw fixing plate, 113-lift screw, 114-stopper, 115, screw nut block, 116-lift screw hand wheel, 117-output bearing housing, 118-hexagonal sleeve, 119-lift plate lock, 120-key sleeve, 121-bearing set, 122-output shaft, 123-upper cover plate, 801-lateral adjustment hand wheel, 802-lateral screw fixing plate, 802-stopper, 804-lateral screw, 805-lateral screw nut, 807-screw nut fixing plate, 9-crank special fixture head, 902-hexagonal head, 903-clamping bolt head, 904-clamping head.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
The invention provides a universal power calibration platform, which is shown in figure 1 and comprises a power output main module 1, a reference line laser lamp 2 arranged at the front end of the main module 1,2 parallel transverse support rods 6 below the main module 1, a transverse adjusting screw rod module 8 connected between the transverse support rods 6 and the main module 1,2 parallel longitudinal support rods 5 below the transverse support rods 6, sliding locking frames 3 respectively arranged in T-shaped grooves on the side surfaces of the two longitudinal support rods, a handle 4 arranged at the forefront end of each longitudinal support rod 5 and 2 casters 7 arranged on one transverse support rod at the rearmost end.
As shown in fig. 2, the main module 1 is a metal frame 101, a side cover 105 is mounted on the left and right sides of the main module, a top cover 123 is mounted above the main module, 2 front and rear module transverse sliding plates 103 are fixed at the bottom of the frame 101, the transverse sliding plates 103 are mounted in T-shaped grooves on the top surface of the transverse supporting rod 6 through sliding plate locking members 102 at two ends, the sliding plate locking members 102 can slide left and right under the loosening condition, and a servo motor driver 104 is fixed on the upper surface of the rear transverse sliding plate 103 and connected with a servo motor 111 through cables.
As shown in fig. 3 and 4, a front mounting plate 106 is mounted at the front end of the frame body 101, a lifting slide plate 107 is mounted at the inner side of the front mounting plate 106, a plurality of kidney-shaped bosses are arranged on the surface of the lifting slide plate 107, and are matched with corresponding long round grooves formed in the front mounting plate 106 to realize up-and-down sliding, and fixing is realized through a lifting plate locking member 119 in threaded fit with the kidney-shaped bosses.
As shown in fig. 5, the servo motor 111 is mounted in cooperation with the speed reducer 110, and is mounted on the lifting slide plate 107 in transition through the speed reducer fixing plate 108, the speed reducer 110 is hollow in output, is in cooperation with one end shaft of the dynamic torque sensor 109 through a key, and the other end of the dynamic torque sensor 109 penetrates through the lifting slide plate 107 and is connected with the output shaft 122 of the main module 1 through a key shaft sleeve 120.
The output shaft 122 of the main module 1 is installed in the output bearing seat 117 through a bearing group, the bearing seat 117 is fixed on the lifting slide plate 107, the outer end of the output shaft 122 of the main module 1 is a hexagonal shaft, the hexagonal shaft is in clearance fit with the hexagonal sleeve 118, and the other end of the hexagonal sleeve 118 can be optionally matched with connectors of various specifications or a special fixture head 9 of a crank. As shown in fig. 8, two kinds of adapters suitable for the middle shafts of different target dynamometer devices are respectively used for the hexagonal shaft and the square shaft.
As shown in fig. 9, the crank-dedicated jig head 9 includes: the clamping main body 901, the hexagonal head connecting rod 902, a plurality of rubber clamping sheets 903, two clamping bolts 904, the clamping main body 901 is a U-shaped metal piece, the back of the clamping main body is fixed with the hexagonal head connecting rod 902, the tail end of the hexagonal head connecting rod 902 is spherical, the clamping main body can be plugged into the hexagonal sleeve 118 when in use, a plurality of groups of rubber clamping sheets 903 which are oppositely stuck are arranged in the U-shaped groove of the clamping main body 901, the crank adaptation of the dynamometer equipment with different thicknesses can be realized by changing the clamping pieces with different thicknesses, the rotation center of the crank is opposite to the center of the clamping main body during clamping, the crank can be placed in the U-shaped groove of the main body in any direction, and the clamping can be realized by screwing the clamping bolt 904.
The side surface of the speed reducer fixing plate 108 is fixedly provided with a screw nut block 115, and the direction of a threaded hole of the screw nut block 115 is perpendicular to the ground and is matched with the lifting screw 113.
The lifting screw 113 is fixed with a lifting screw hand wheel 116 at the top end, the bottom end is fixed with a bearing inner ring on the lifting screw fixing plate 112, the lifting screw fixing plate 112 is fixed on the frame body 101 of the main module 1, a limiting block 114 is also fixed in the middle of the lifting screw 113, and the position can be adjusted along the axial direction.
As shown in fig. 7, the opening angle of the reference line laser lamp 2 is adjustable.
The longitudinal support rod 5 is arranged in a T-shaped groove on the side surface of the transverse support rod 6 through a fastening screw, and the transverse adjustment of the position can be realized under the condition that the fastening screw is loosened.
The sliding locking frame 3 can slide in the T-shaped groove on the side face of the longitudinal supporting rod 5 and is provided with a screw thread fastening handle, so that the object in the frame can be clamped.
As shown in fig. 6, the lateral adjustment screw module 8 includes a lateral screw 804, a lateral screw nut 805 screwed with the lateral screw 804, a screw nut fixing plate 807 fixed in cooperation with the lateral screw 804, a lateral screw fixing plate 802 penetrated by the lateral screw 804, a lateral adjustment hand wheel 801 fixed at the end of the lateral screw 804, and a stopper 803 fixed on the screw inside the lateral screw 804 fixing plate.
The transverse screw rod fixing plate 802 is installed in the T-shaped groove on the top surface of the transverse supporting rod 6 through a fastener.
A lead screw nut fixing plate 807 is fixed to the side cover plate 105.
Fig. 10 is a schematic diagram of a clamping for calibrating a certain dynamometer equipment (power car). As shown in fig. 11, the automatic calibration system matched with the power calibration platform mainly refers to PC software, and is connected with the communication interfaces of the servo motor driver 104 and the dynamic torque sensor 109 through a USB-RS485 adapter line by a USB interface of the PC, and then the USB can be converted into a communication mode corresponding to the target dynamometer equipment, such as RS232, RS485, bluetooth, etc., according to the need by a USB-serial hub, and then connection is established with the target dynamometer equipment.
The specific automatic calibration and power adjustment performance parameter verification work flow is as follows:
S1: loosening the fastening screw of the longitudinal support rods 5, adjusting the interval between the longitudinal support rods 5 to match the interval between the front foot margin and the rear foot margin of the load target equipment, and then re-fastening;
S2: carrying target dynamometer equipment (such as a power car) onto a longitudinal support rod 5 of a calibration platform, loosening a transverse slide plate locking piece 102 and a lifting plate locking piece 119 of a main module 1, respectively adjusting a lifting screw hand wheel 116 and a transverse adjusting hand wheel 801 to enable an output shaft 122 of the main module to be aligned with a power input center shaft of the dynamometer equipment (a pedal crank of the dynamometer equipment needs to be detached), and locking the transverse slide plate locking piece 102 and the lifting plate locking piece 119;
S3: a joint matched with a central shaft of a target dynamometer is arranged in the hexagon sleeve 118 of the output shaft 122, the dynamometer is moved to be close to a calibration platform, the joint is connected to the central shaft of the dynamometer (for the target dynamometer which is inconvenient to disassemble a crank, a special clamp head 9 of the crank can be used for directly clamping the crank, then a hexagonal ball head at the tail end of the clamp head is plugged into the hexagon sleeve), a bottom cross rod of the target dynamometer is inserted into the sliding locking frame 3, the machine body of the equipment is adjusted to be parallel to the reference line according to a ground reference line projected by the reference line laser lamp 2, and then the sliding locking frame 3 is locked;
s4: connecting the servo motor driver 104 with a communication line of the dynamic torque sensor 107 to a computer, and connecting a remote control communication line of the target dynamometer equipment to the computer;
S5: according to a communication protocol and a dotting flow of the dynamometer equipment, writing a configuration file, wherein the configuration file mainly comprises serial port configuration, time points, power instructions and motor rotation speed of the dynamometer equipment;
s6: the system reads the setting data in the configuration file in sequence, is connected with the dynamometer, sends a power instruction to the dynamometer at a specific time point, adjusts the rotating speed of the motor, records the average value of the dynamic torque sensor in the previous time period, and calculates the measured power according to the torque and the speed;
S7: the system arranges the set power, the speed, the torque, the calculated measured power and the error into a table file and outputs the table file;
s8: and after the target dynamometer equipment, preferably a power vehicle, is calibrated. A power adjustment performance verification program may be run and parameters such as accuracy, hysteresis, overshoot, etc. may be calculated.
The performance verification of power regulation is a necessary link of the dynamometer equipment, can verify performance parameters of the dynamometer equipment such as precision, overshoot, lag time and the like, and can control a servo motor to change according to a set speed mode, and can select step speed change or sine speed change. In the changing process, setting target power and testing the change of output power of the dynamometer equipment in real time, wherein the calculation mode of parameters is shown in fig. 12. Fig. 12 is a graph showing the change of the measured real-time power after setting the target power at a certain speed, wherein several parameters are calculated: wherein:
precision: after the power adjustment is finished, the error between the target power and the actual detection power;
Overshoot: during power adjustment, a maximum offset is generated between the target power and the actual power;
Hysteresis time: the time required for the actual power to reach the target power within 10% error for the first time.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (7)
1. A universal power calibration platform, comprising: the power output device comprises a power output main module (1), a reference line laser lamp (2) arranged at the front end of the main module (1), 2 parallel transverse support rods (6) arranged below the main module (1), a transverse adjusting screw rod module (8) connected between the transverse support rods (6) and the main module (1), 2 parallel longitudinal support rods (5) arranged below the transverse support rods (6), sliding locking frames (3) respectively arranged in T-shaped grooves on the side surfaces of the two longitudinal support rods (5), a handle (4) arranged at the forefront end of each longitudinal support rod (5) and 2 casters (7) arranged on one transverse support rod (6) at the rearmost end;
The main module (1) is characterized in that the main body of the main module (1) is a metal frame body (101), a side cover plate (105) is respectively arranged at the left and right sides, a top cover plate (123) is arranged above the main frame body, 2 module transverse sliding plates (103) are fixed at the bottom of the frame body (101), the transverse sliding plates are arranged in T-shaped grooves on the top surface of a transverse supporting rod (6) through sliding plate locking pieces (102) at two ends, the sliding plate locking pieces (102) can slide left and right under the loosening condition, and a servo motor driver (104) is fixed on the rear side transverse sliding plates (103) and connected with a servo motor (111) through cables;
A front mounting plate (106) is mounted at the front end of the frame body (101), a lifting slide plate (107) is mounted on the inner side of the front mounting plate (106), a plurality of kidney-shaped bosses are arranged on the surface of the lifting slide plate (107), the lifting slide plate is matched with corresponding long round grooves formed in the front mounting plate (106) to realize up-and-down sliding, and the lifting slide plate is fixed through a lifting plate locking piece (119) in threaded fit with the kidney-shaped bosses;
The servo motor (111) is mounted in a matched mode with the speed reducer (110), the speed reducer is mounted on the lifting slide plate (107) in a transitional mode through the speed reducer fixing plate (108), the speed reducer (110) is hollow in output, is matched with one end of the dynamic torque sensor (109) through a key, and the other end of the dynamic torque sensor (109) penetrates through the lifting slide plate (107) and is connected with an output shaft (122) of the main module (1) through a key shaft sleeve (120);
The output shaft (122) of the main module (1) is installed in the output bearing seat (117) through a bearing group, the bearing seat is fixed on the lifting slide plate (107), the outer end of the output shaft (122) of the main module (1) is a hexagonal shaft, the hexagonal shaft is in clearance fit with the hexagonal sleeve (118), and the other end of the hexagonal sleeve (118) is matched with a connector with proper specification or a special fixture head (9) of a crank.
2. A universal power calibration platform according to claim 1, characterized in that the crank-specific clamp head (9) comprises: clamping main part (901), hexagon head connecting rod (902), a plurality of rubber grip tabs (903), two clamping bolts (904), clamping main part (901) are U type metalwork, back and hexagon head connecting rod (902) are fixed, the end of hexagon head connecting rod (902) is spherical, in the use, pack into hexagon socket (118), clamping main part (901) U type inslot portion has rubber grip tab (903) of multiunit relative pasting, realize the target dynamometer equipment crank adaptation to different thickness through changing rubber grip tab (903) of different thickness, crank rotation center is just to clamping main part (901) center during the centre of centre gripping, the crank can be placed in clamping main part (901) U type inslot in arbitrary one direction, clamping bolt (904) realization clamp tightly.
3. The universal power calibration platform according to claim 1, wherein a screw nut block (115) is fixedly arranged on the side surface of the speed reducer fixing plate (108), the direction of a threaded hole of the screw nut block (115) is perpendicular to the ground, and the screw nut block is matched with the lifting screw (113); the top end of the lifting screw rod (113) is fixedly provided with a lifting screw rod hand wheel (116), the bottom end of the lifting screw rod hand wheel is fixed with a bearing inner ring on a lifting screw rod fixing plate (112), the lifting screw rod fixing plate (112) is fixed on a frame body (101) of the main module (1), the middle part of the lifting screw rod (113) is also fixedly provided with a limiting block (114), and the position of the limiting block can be adjusted along the axial direction.
4. A universal power calibration platform according to claim 1, characterized in that the opening angle of the reference line laser lamp (2) is adjustable.
5. A universal power calibration platform according to claim 1, characterized in that the longitudinal support bar (5) is mounted in a T-shaped groove in the side of the transverse support bar (6) by means of a fastening screw, which, when loosened, enables a lateral adjustment of the position; the sliding locking frame (3) can slide in the T-shaped groove on the side surface of the longitudinal supporting rod (5) and is provided with a screw thread fastening handle, so that the object in the frame can be clamped;
The transverse adjusting screw rod module (8) comprises a transverse screw rod (804), a transverse screw rod nut (805) in threaded fit with the transverse screw rod (804), a screw rod nut fixing plate (807) in fit with the transverse screw rod nut (805), a transverse screw rod fixing plate (802) penetrated by the transverse screw rod (804), a transverse adjusting hand wheel (801) fixed at the tail end of the transverse screw rod (804), and a limiting block (803) which is arranged inside the transverse screw rod fixing plate (802) and fixed on the transverse screw rod (804);
the transverse screw rod fixing plate (802) is arranged in a T-shaped groove on the top surface of the transverse supporting rod (6) through a fastener;
A lead screw nut fixing plate (807) is fixed to the side cover plate (105).
6. A universal power calibration platform according to claim 5, wherein the power calibration method of the power calibration platform comprises the steps of,
S1: loosening fastening screws of the longitudinal support rods (5), adjusting the distance between the longitudinal support rods (5) to enable the distance to match with the distance between the front foot margin and the rear foot margin of the load target dynamometer equipment, and then fastening again;
s2: carrying target dynamometer equipment to a longitudinal supporting rod (5), loosening a transverse sliding plate locking piece (102) and a lifting plate locking piece (119) of a main module (1), respectively adjusting a lifting screw rod hand wheel (116) and a transverse adjusting hand wheel (801), enabling an output shaft (122) of the main module (1) to be aligned with a power input center shaft of the target dynamometer equipment, and locking the transverse sliding plate locking piece (102) and the lifting plate locking piece (119);
S3: a joint matched with a central shaft of a target dynamometer is arranged in a hexagonal sleeve (118) of an output shaft (122), the target dynamometer is moved to be close to a calibration platform, the joint is connected with the central shaft of the target dynamometer, a cross rod at the bottom of the target dynamometer is inserted into a sliding locking frame (3), a machine body of the target dynamometer is adjusted to be parallel to a reference line according to a ground reference line projected by a reference line laser lamp (2), and then the sliding locking frame (3) is locked;
s4: connecting a communication line of the servo motor driver (104) and the dynamic torque sensor (109) with a computer, and connecting a remote control communication line of the target dynamometer equipment with the computer;
S5: according to a communication protocol and a dotting flow of target dynamometer equipment, writing a configuration file, wherein the configuration file comprises serial port configuration, time points, power instructions and motor rotation speed of the target dynamometer equipment;
S6: the automatic calibration system reads the setting data in the configuration file in sequence, is connected with the target dynamometer, sends a power instruction to the target dynamometer at a specific time point, adjusts the rotating speed of a motor, records the average value of a dynamic torque sensor (109) in the previous time period, and calculates the measured power according to the torque and the speed;
s7: the automatic calibration system arranges the set power, the speed, the torque, the calculated measured power and the error into a table file and outputs the table file;
s8: after the target dynamometer equipment is calibrated, a power adjustment performance verification program is operated, and parameters of precision, hysteresis ratio and overshoot ratio are calculated.
7. An automatic calibration system matched with the power calibration platform according to any one of claims 1 to 6, which is characterized by comprising computer software, wherein the computer software is connected with communication interfaces of a servo motor driver (104) and a dynamic torque sensor (109) respectively through a USB interface of a computer end by using a USB-RS485 adapter wire, and then the USB is converted into a communication mode corresponding to target dynamometer equipment according to the need through a USB-serial hub, and then connection is established with the target dynamometer equipment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410777100.9A CN118347628B (en) | 2024-06-17 | 2024-06-17 | Universal power calibration platform and automatic calibration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410777100.9A CN118347628B (en) | 2024-06-17 | 2024-06-17 | Universal power calibration platform and automatic calibration system |
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| CN118347628A true CN118347628A (en) | 2024-07-16 |
| CN118347628B CN118347628B (en) | 2024-08-13 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765518A (en) * | 2018-12-29 | 2019-05-17 | 中国科学院合肥物质科学研究院 | A kind of Power Vehicle power calibration platform |
| CN212007814U (en) * | 2020-06-15 | 2020-11-24 | 河南省医疗器械检验所 | Electric eddy current type power vehicle calibration platform |
| CN115356038A (en) * | 2022-08-17 | 2022-11-18 | 上海顺试汽车科技有限公司 | Calibration device and method for torque sensor |
| CN116358777A (en) * | 2023-04-26 | 2023-06-30 | 重庆理工大学 | Torque on-line dynamic calibration method for dynamometer system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765518A (en) * | 2018-12-29 | 2019-05-17 | 中国科学院合肥物质科学研究院 | A kind of Power Vehicle power calibration platform |
| CN212007814U (en) * | 2020-06-15 | 2020-11-24 | 河南省医疗器械检验所 | Electric eddy current type power vehicle calibration platform |
| CN115356038A (en) * | 2022-08-17 | 2022-11-18 | 上海顺试汽车科技有限公司 | Calibration device and method for torque sensor |
| CN116358777A (en) * | 2023-04-26 | 2023-06-30 | 重庆理工大学 | Torque on-line dynamic calibration method for dynamometer system |
Non-Patent Citations (1)
| Title |
|---|
| 胡三恩: "柴油机综合性能动态测试系统研制", 《石油矿场机械》, vol. 42, no. 10, 31 December 2013 (2013-12-31), pages 84 - 87 * |
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