CN103777041A - Calibration device and calibration method for torque and rotation speed measuring instrument - Google Patents
Calibration device and calibration method for torque and rotation speed measuring instrument Download PDFInfo
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- CN103777041A CN103777041A CN201410048010.2A CN201410048010A CN103777041A CN 103777041 A CN103777041 A CN 103777041A CN 201410048010 A CN201410048010 A CN 201410048010A CN 103777041 A CN103777041 A CN 103777041A
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Abstract
The invention provides a calibration device for a torque and rotation speed measuring instrument. The calibration device comprises a loading motor, a driving motor, a standard torque measuring module and a standard rotation speed measuring module and a control module, wherein the loading motor, the driving motor, the standard torque measuring module and the standard rotation speed measuring module are in coaxial and serial connection with the torque and rotation speed measuring instrument to be calibrated. The control module sends a torque control instruction to a torque control module to drive the loading motor to carry out lock rotor according to the specified torque, sends a rotation speed control instruction to a rotation speed control module to drive the driving motor to rotate according to the specified rotation speed, obtains standard torques from the standard torque measuring module, obtains standard rotation speeds from the standard rotation speed measuring module, obtains measured torques and measured rotation speeds of the torque and rotation speed measuring instrument to be calibrated, and records the measured torque corresponding to each standard torque and the measured rotation speed corresponding to each standard rotation speed. The invention further discloses a corresponding calibration method. According to the calibration device and the calibration method for the torque and rotation speed measuring instrument, synchronous calibration on the measured torques and the measured rotation speeds of the torque and rotation speed measuring instrument under a load rotation working condition is achieved, and the calibration correctness is improved.
Description
Technical field
The present invention relates to a kind of torque rotary speed synchro control and measuring technique, specially refer to a kind of calibrating installation of tachometer torquemeter.
Background technology
At present, the power of the rotating machinery products such as motor, engine, wheel box is mainly by using all kinds of power measurement arrangements (as ac dynamometer) to measure, its major equipment is tachometer torquemeter, needing the parameter of directly measuring is torque and rotational speed, and power is to be converted and obtained by torque and rotational speed.The torque parameter values of rotating machinery product such as motor, engine, wheel box and the accuracy of rotary speed parameter value depend primarily on tachometer torquemeter.
Tachometer torquemeter generally includes torque rotary speed sensor and torque rotary speed measuring unit.Described torque rotary speed sensor is connected on measured product, produces the sensor signal corresponding with the torque and rotational speed of measured product, and described torque rotary speed measuring unit is processed described sensor signal, obtains the torque and rotational speed of measured product.
Accurate to the value of tachometer torquemeter for guaranteeing, guarantee product quality, need to carry out periodic calibration to tachometer torquemeter,
The calibrating mode of prior art is based on JJG924-2010 torque rotary speed measuring device national metrological verification regulations: adopt static calibration method (not rotating), the torque measurement value of examining and determine tachometer torquemeter by the mode of sampling on static torque Standard Machine, record the torque parameter that each setpoint torque is corresponding, the rotating speed measured value of examining and determine tachometer torquemeter on speed test platform by the mode of sampling, records rotating speed measured value corresponding to each setting speed; According to the described tachometer torquemeter of data calibration (demarcation) of record.And tachometer torquemeter is during to rotating machinery product power measurements such as motor, engine, wheel boxes, under load rotary work condition, torque and rotational speed is synchronously measured, existing calibration steps is not simulated the torque and rotational speed actual synchronization duty under bringing onto load condition, the calibration steps of prior art cannot guarantee that calibrating state is consistent with use state, and the accuracy of calibration result is existed to more uncertain factor.
Summary of the invention
In view of this, the invention provides a kind of tachometer torquemeter calibrating installation and method, the problem existing to solve prior art.
Tachometer torquemeter calibrating installation of the present invention comprises:
Loading motor, drive motor, standard torque measurement module, rated rotational frequency measurement module, torque control module, rotational speed control module, control module;
Described loading motor, drive motor, standard torque measurement module, rated rotational frequency measurement module and the torque rotary speed sensor that is calibrated tachometer torquemeter are coaxially connected;
Described control module sends torque steering order to described torque control module; Send rotating speed steering order to described rotational speed control module; Obtain standard torque from described standard torque measurement module; Obtain rated rotational frequency from described rated rotational frequency measurement module; Described in obtaining, be calibrated the measurement torque of tachometer torquemeter and measure rotating speed; Record measurement torque corresponding to each standard torque and measurement rotating speed corresponding to each rated rotational frequency;
Stall is carried out in the torque that described torque control module drives described loading motor to specify by described torque steering order;
The rotating speed that described rotational speed control module drives described drive motor to specify by described rotating speed steering order is rotated;
Described standard torque measurement module, comprises standard torque sensor, measures the standard torque that described loading motor produces;
Described rated rotational frequency measurement module is measured the rated rotational frequency that described drive motor produces.
Further, described torque control module comprises:
The first communication unit, receives torque steering order from described control module;
Torque control module, stall is carried out in the torque that drives described loading motor to specify by described torque steering order according to described torque steering order.
Further, described torque control module comprises:
Steering order converting unit, generates Direct Torque Control instruction according to described torque steering order;
Direct Torque Control unit, carries out stall according to described Direct Torque Control order-driven loading motor by predetermined torque.
Preferably, the torque that described control module is specified according to torque steering order described in described standard torque modification, carries out closed-loop control to described loading motor;
Further, described rotational speed control module comprises:
Second communication unit, receives rotating speed steering order from described control module;
Rotary speed controling unit, the rotating speed that drives described drive motor to specify by described rotating speed steering order according to described rotating speed steering order is rotated.
Further, described rated rotational frequency measurement module comprises:
Third communication unit, sends to described control module by described rated rotational frequency;
Pulse detecting unit, measures the rotary pulsed of described drive motor;
Cell encoder, according to the rated rotational frequency of the described drive motor of described rotary pulsed acquisition.
Preferably, described cell encoder sends described rated rotational frequency to described rotary speed controling unit; Described drive motor is carried out to closed-loop control;
Preferably, described second communication unit and described third communication unit are a communication unit.
Tachometer torquemeter calibration of the present invention comprises:
The rotating speed that drive motor is specified according to rotating speed steering order is rotated;
Measure the rated rotational frequency that obtains described drive motor;
Obtain the measurement rotating speed that is calibrated tachometer torquemeter;
Record the corresponding measurement rotating speed of each rated rotational frequency;
Stall is carried out in the torque that loading motor is specified according to torque steering order;
Measure the standard torque that obtains described loading motor;
Obtain the measurement torque that is calibrated tachometer torquemeter;
Record the corresponding measurement rotating speed of each rated rotational frequency.
Preferably, described method also comprises:
According to described rated rotational frequency, described drive motor is carried out to closed-loop control;
And/or,
According to described standard torque, described loading motor is carried out to closed-loop control.
Apparatus and method of the present invention are by being coaxially connected standard torque measurement module, rated rotational frequency measurement module, tested tachometer torquemeter with drive motor and loading motor, the mode of synchronous calibration, realize under load rotary work condition the measurement torque of tachometer torquemeter and measurement rotating speed have been carried out to synchronous calibration, improved the accuracy of tachometer torquemeter calibration.
Accompanying drawing explanation
Fig. 1 is the specific embodiment of the invention 1 apparatus structure schematic diagram;
Fig. 2 is a kind of preferred structure schematic diagram of torque control module in apparatus of the present invention;
Fig. 3 is a kind of preferred structure schematic diagram of apparatus of the present invention medium speed control module;
Fig. 4 is a kind of preferred structure schematic diagram of apparatus of the present invention Plays rotation speed measuring module; ;
Fig. 5 is a kind of specific implementation structural representations of apparatus of the present invention;
Fig. 6 is the specific embodiment of the invention 2 method flow diagrams;
Embodiment
Be described with reference to the accompanying drawings technical scheme of the present invention below by specific embodiment in order better to illustrate.
Specific embodiment 1
Referring to Fig. 1, Fig. 1 shows a kind of preferred embodiment of tachometer torquemeter calibrating installation of the present invention, and as shown in Figure 1, described device comprises:
Loading motor 101, drive motor 102, standard torque measurement module 103, rated rotational frequency measurement module 104, torque control module 105, rotational speed control module 106, control module 107;
Described loading motor 101, drive motor 102, standard torque measurement module 103, rated rotational frequency measurement module 104 and the torque rotary speed sensor that is calibrated tachometer torquemeter are coaxially connected;
Described control module 107, for sending torque steering order to described torque control module 105; Send rotating speed steering order to described rotational speed control module 106; Obtain standard torque from described standard torque measurement module 103; Obtain rated rotational frequency from described rated rotational frequency measurement module 104; Described in obtaining, be calibrated the measurement torque of tachometer torquemeter and measure rotating speed; Record measurement torque corresponding to each standard torque and measurement rotating speed corresponding to each rated rotational frequency;
Stall is carried out in the torque that described torque control module 105 drives described loading motor 101 to specify by described torque steering order;
Preferably, described torque control module may further include structure as shown in Figure 2:
The first communication unit 201, receives torque steering order from described control module;
Torque control module 202, stall is carried out in the torque that drives described loading motor to specify by described torque steering order according to described torque steering order;
Wherein, described torque control module can adopt any one torque control mode to realize, and the present invention is not specifically limited this;
Preferably, described torque control module adopts Direct Torque Control (being called for short DTC) to realize, and comprising:
Steering order converting unit 2021, generates DTC instruction according to described torque steering order;
DTC unit 2022, carries out stall according to described DTC order-driven loading motor by predetermined torque;
This preferred version adopts DTC to realize described torque control module, compared with traditional vector control method, can, using torque directly as controlled volume, to the direct control of torque, directly simplify again, can improve the degree of accuracy of torque control.
The rotating speed that described rotational speed control module 106 drives described drive motor 102 to specify by described rotating speed steering order is rotated;
Preferably, described rotational speed control module may further include structure as shown in Figure 3:
Rotary speed controling unit 302, the rotating speed that drives described drive motor to specify by described rotating speed steering order according to described rotating speed steering order is rotated;
Described standard torque measurement module 103 is measured the standard torque that described loading motor produces;
Wherein, described standard torque measurement module comprises: standard torque sensor;
The preferred specific implementation of one as embodiment of the present invention device:
The torque that described control module is specified according to torque steering order described in described standard torque modification; For described loading motor is carried out to closed-loop control;
Described rated rotational frequency measurement module 104 is measured the rated rotational frequency that described drive motor produces.
Preferably, described rated rotational frequency measurement module may further include structure as shown in Figure 4:
Pulse detecting unit 401, measures the rotary pulsed of described drive motor;
Cell encoder 402, according to the rated rotational frequency of the described drive motor of described rotary pulsed acquisition;
Third communication unit 403, sends to described control module by described rated rotational frequency;
The preferred specific implementation of one as embodiment of the present invention device:
Described cell encoder sends described rated rotational frequency to described rotary speed controling unit; For described drive motor is carried out to closed-loop control;
Preferably, described third communication unit 403 can be same communication unit with described second communication unit 301.
Persons skilled in the art obviously should be understood that each module, the unit of embodiment of the present invention device can be concrete physical division, can be also logical partitionings, and the present invention there is no concrete restriction to this.
For example, embodiment of the present invention device can specifically adopt structure as shown in Figure 5 to realize, and comprising:
Loading motor, drive motor, computer measurement and control system, the first frequency converter, the second frequency converter, standard torque sensor, pulse encoder;
Described loading motor, drive motor, standard torque sensor, pulse encoder and the torque rotary speed sensor that is calibrated tachometer torquemeter are coaxially connected;
Described computer measurement and control system, produces torque steering order and sends to the first frequency converter; Produce rotating speed steering order and send to the second frequency converter; Obtain the standard torque of loading motor from standard torque sensor, the torque of specifying according to torque steering order described in described standard torque modification; Obtain the rated rotational frequency of drive motor from the second frequency converter, obtain measurement torque and measure rotating speed from being calibrated tachometer torquemeter; Record measurement torque corresponding to each standard torque and measurement rotating speed corresponding to each rated rotational frequency;
Described the first frequency converter, comprises first communication module, programmable module, DTC module;
Described first communication module obtains torque steering order from described computer measurement and control system;
Described programmable module produces DTC instruction according to described torque steering order;
Described DTC module is carried out stall according to loading motor described in described DTC order-driven according to the torque of specifying;
Described the second frequency converter, comprises second communication module, rotational speed control module, coder module;
Described second communication module obtains rotating speed steering order from described computer measurement and control system; Send described rated rotational frequency to described computer measurement and control system;
Described coder module, receives the rotary pulsed of described drive motor from described pulse encoder, obtains described rated rotational frequency;
Described rotational speed control module, drives described drive motor by the rotating speed rotation of specifying according to described rotating speed steering order and described rated rotational frequency;
Standard torque sensor, the standard torque of measuring described loading motor; Send to described computer measurement and control system and described programmable module;
Pulse encoder, measures the rotary pulsed of described drive motor.
In this implementation, described the first frequency converter can preferably adopt the ACS800-11 type frequency converter of ABB AB; Described the second frequency converter can preferably adopt the ACS800-01 type frequency converter of ABB AB; Described standard torque sensor can preferably adopt the contactless flange torque sensor of German GIF company.
Embodiment of the present invention device records after measurement torque corresponding to each standard torque and measurement rotating speed corresponding to each rated rotational frequency, can adopt any one calibrating mode of the prior art to calibrate (demarcation) to being calibrated tachometer torquemeter, the present invention is not specifically limited this.
Specific embodiment 2
Referring to Fig. 6, Fig. 6 shows a kind of preferred embodiment of tachometer torquemeter calibration steps of the present invention, and the applied device of this method is the device described in specific embodiment 1; As shown in Figure 6, described method comprises:
Measure rotating speed calibration flow process:
S601, control module produce and send rotating speed steering order;
The rotating speed that S602, drive motor are specified according to described rotating speed steering order is rotated;
S603, measurement obtain the rated rotational frequency of described drive motor;
S604, obtain the measurement rotating speed that is calibrated tachometer torquemeter;
S605, record the corresponding measurement rotating speed of each rated rotational frequency;
Measure torque calibration flow process:
S611, control module produce and send torque steering order;
Stall is carried out in the torque that S612, loading motor are specified according to described torque steering order;
S613, the standard torque of measuring the described loading motor of acquisition;
S614, obtain the measurement torque that is calibrated tachometer torquemeter;
S615, record the corresponding measurement torque of each standard torque;
Calibrate being calibrated tachometer torquemeter according to measurement rotating speed corresponding to each rated rotational frequency and measurement torque corresponding to each standard torque.
In the present embodiment, this step can adopt any one calibrating mode of the prior art to calibrate (demarcation) to being calibrated tachometer torquemeter, and the present invention is not specifically limited this.
Preferably, can also comprise step S604b after described step S603, described drive motor be carried out to closed-loop control with described rated rotational frequency;
Preferably, can also comprise step 614b after described step S613, described loading motor be carried out to closed-loop control with described standard torque.
The apparatus and method of the embodiment of the present invention are by being coaxially connected standard torque measurement module, rated rotational frequency measurement module, tested tachometer torquemeter with drive motor and loading motor, the mode of synchronous calibration, realize under load rotary work condition the measurement torque of tachometer torquemeter and measurement rotating speed have been carried out to synchronous calibration, improved the accuracy of tachometer torquemeter calibration.
One of ordinary skill in the art obviously should be known and be understood, the present invention for above embodiment only for the present invention is described, and be not limited to the present invention.In the situation that not deviating from spirit of the present invention and essence thereof, those skilled in the art are when making according to the present invention various corresponding changes or distortion, but these corresponding changes or distortion all belong to claim protection domain of the present invention.
Claims (10)
1. a tachometer torquemeter calibrating installation, is characterized in that, comprising:
Loading motor, drive motor, standard torque measurement module, rated rotational frequency measurement module, torque control module, rotational speed control module, control module;
Described loading motor, drive motor, standard torque measurement module, rated rotational frequency measurement module and the torque rotary speed sensor that is calibrated tachometer torquemeter are coaxially connected;
Described control module sends torque steering order to described torque control module; Send rotating speed steering order to described rotational speed control module; Obtain standard torque from described standard torque measurement module; Obtain rated rotational frequency from described rated rotational frequency measurement module; Described in obtaining, be calibrated the measurement torque of tachometer torquemeter and measure rotating speed; Record measurement torque corresponding to each standard torque and measurement rotating speed corresponding to each rated rotational frequency;
Stall is carried out in the torque that described torque control module drives described loading motor to specify by described torque steering order;
The rotating speed that described rotational speed control module drives described drive motor to specify by described rotating speed steering order is rotated;
Described standard torque measurement module, comprises standard torque sensor, measures the standard torque that described loading motor produces;
Described rated rotational frequency measurement module is measured the rated rotational frequency that described drive motor produces.
2. tachometer torquemeter calibrating installation according to claim 1, is characterized in that, described torque control module comprises:
The first communication unit, receives torque steering order from described control module;
Torque control module, stall is carried out in the torque that drives described loading motor to specify by described torque steering order according to described torque steering order.
3. tachometer torquemeter calibrating installation according to claim 2, is characterized in that, described torque control module comprises:
Steering order converting unit, generates Direct Torque Control instruction according to described torque steering order;
Direct Torque Control unit, carries out stall according to described Direct Torque Control order-driven loading motor by predetermined torque.
4. want the tachometer torquemeter calibrating installation described in 2 or 3 according to right, it is characterized in that:
The torque that described control module is specified according to described standard torque modification torque steering order, carries out closed-loop control to described loading motor.
5. tachometer torquemeter calibrating installation according to claim 1, is characterized in that, described rotational speed control module comprises:
Second communication unit, receives rotating speed steering order from described control module;
Rotary speed controling unit, the rotating speed that drives described drive motor to specify by described rotating speed steering order according to described rotating speed steering order is rotated.
6. tachometer torquemeter calibrating installation according to claim 5, is characterized in that, described rated rotational frequency measurement module comprises:
Third communication unit, sends to described control module by described rated rotational frequency;
Pulse detecting unit, measures the rotary pulsed of described drive motor;
Cell encoder, according to the rated rotational frequency of the described drive motor of described rotary pulsed acquisition.
7. tachometer torquemeter calibrating installation according to claim 6, is characterized in that:
Described cell encoder sends described rated rotational frequency to described rotary speed controling unit; Described drive motor is carried out to closed-loop control.
8. according to the tachometer torquemeter calibrating installation described in claim 6 or 7, it is characterized in that:
Described second communication unit and described third communication unit are a communication unit.
9. a tachometer torquemeter calibration steps, is characterized in that, comprising:
The rotating speed that drive motor is specified according to rotating speed steering order is rotated;
Measure the rated rotational frequency that obtains described drive motor;
Obtain the measurement rotating speed that is calibrated tachometer torquemeter;
Record the corresponding measurement rotating speed of each rated rotational frequency;
Stall is carried out in the torque that loading motor is specified according to torque steering order;
Measure the standard torque that obtains described loading motor;
Obtain the measurement torque that is calibrated tachometer torquemeter;
Record the corresponding measurement torque of each standard torque.
10. tachometer torquemeter calibration steps according to claim 9, is characterized in that, described method also comprises:
According to described rated rotational frequency, described drive motor is carried out to closed-loop control;
And/or,
According to described standard torque, described loading motor is carried out to closed-loop control.
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| CN201410048010.2A CN103777041A (en) | 2014-02-11 | 2014-02-11 | Calibration device and calibration method for torque and rotation speed measuring instrument |
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| CN201410048010.2A CN103777041A (en) | 2014-02-11 | 2014-02-11 | Calibration device and calibration method for torque and rotation speed measuring instrument |
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Cited By (11)
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| CN104977533A (en) * | 2015-07-31 | 2015-10-14 | 苏州蓝王机床工具科技有限公司 | Calibration method for motor with calibratable rotating speed |
| CN105372006A (en) * | 2015-12-11 | 2016-03-02 | 赵浩 | Vibration torque sensor calibration device and calibration method |
| CN105510635A (en) * | 2015-12-26 | 2016-04-20 | 哈尔滨佳云科技有限公司 | Helicopter tachometer check device |
| CN105841865A (en) * | 2016-05-11 | 2016-08-10 | 中国人民解放军装甲兵技术学院 | Heavy-duty vehicle transmission shaft torque detection apparatus and error correction method |
| CN106066222A (en) * | 2016-06-20 | 2016-11-02 | 常州易控汽车电子有限公司 | The method and system that a kind of motor torque is estimated |
| CN107037361A (en) * | 2017-04-23 | 2017-08-11 | 河南师范大学 | Motor speed measurement device |
| CN110361649A (en) * | 2019-08-12 | 2019-10-22 | 北京理工大学 | A kind of motor correlation calibration system and scaling method based on dynamometer machine and simulated calibration |
| CN111257595A (en) * | 2020-03-23 | 2020-06-09 | 中国船舶重工集团公司第七0四研究所 | Rotation speed characteristic calibration device |
| CN111665044A (en) * | 2020-06-12 | 2020-09-15 | 内蒙古第一机械集团股份有限公司 | Large-torque in-situ calibration method for test bed of armored vehicle transmission device |
| CN111721972A (en) * | 2019-03-20 | 2020-09-29 | 上海汽车集团股份有限公司 | Method and device for verifying rotation speed measured value of electrically-driven gearbox |
| CN112408127A (en) * | 2020-11-17 | 2021-02-26 | 上海吉亿电机有限公司 | Simulation test device and method for elevator driving system |
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| CN104977533A (en) * | 2015-07-31 | 2015-10-14 | 苏州蓝王机床工具科技有限公司 | Calibration method for motor with calibratable rotating speed |
| CN105372006B (en) * | 2015-12-11 | 2017-11-28 | 嘉兴学院 | A kind of Vibration Torque sensor calibration apparatus and scaling method |
| CN105372006A (en) * | 2015-12-11 | 2016-03-02 | 赵浩 | Vibration torque sensor calibration device and calibration method |
| CN105510635A (en) * | 2015-12-26 | 2016-04-20 | 哈尔滨佳云科技有限公司 | Helicopter tachometer check device |
| CN105841865A (en) * | 2016-05-11 | 2016-08-10 | 中国人民解放军装甲兵技术学院 | Heavy-duty vehicle transmission shaft torque detection apparatus and error correction method |
| CN105841865B (en) * | 2016-05-11 | 2019-03-15 | 中国人民解放军装甲兵技术学院 | A kind of heavy-duty vehicle torque transmission shaft detection device and error calibration method |
| CN106066222A (en) * | 2016-06-20 | 2016-11-02 | 常州易控汽车电子有限公司 | The method and system that a kind of motor torque is estimated |
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| CN107037361A (en) * | 2017-04-23 | 2017-08-11 | 河南师范大学 | Motor speed measurement device |
| CN111721972A (en) * | 2019-03-20 | 2020-09-29 | 上海汽车集团股份有限公司 | Method and device for verifying rotation speed measured value of electrically-driven gearbox |
| CN110361649A (en) * | 2019-08-12 | 2019-10-22 | 北京理工大学 | A kind of motor correlation calibration system and scaling method based on dynamometer machine and simulated calibration |
| CN111257595A (en) * | 2020-03-23 | 2020-06-09 | 中国船舶重工集团公司第七0四研究所 | Rotation speed characteristic calibration device |
| CN111665044A (en) * | 2020-06-12 | 2020-09-15 | 内蒙古第一机械集团股份有限公司 | Large-torque in-situ calibration method for test bed of armored vehicle transmission device |
| CN112408127A (en) * | 2020-11-17 | 2021-02-26 | 上海吉亿电机有限公司 | Simulation test device and method for elevator driving system |
| CN112408127B (en) * | 2020-11-17 | 2022-09-02 | 上海吉亿电机有限公司 | Simulation test device and method for elevator driving system |
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Application publication date: 20140507 |
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