CN103759870B - A kind of measuring method for intermittent work device output power value and system - Google Patents
A kind of measuring method for intermittent work device output power value and system Download PDFInfo
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- CN103759870B CN103759870B CN201410029341.1A CN201410029341A CN103759870B CN 103759870 B CN103759870 B CN 103759870B CN 201410029341 A CN201410029341 A CN 201410029341A CN 103759870 B CN103759870 B CN 103759870B
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Abstract
The invention discloses a kind of measuring method for intermittent work device output power value and system, comprise Devices to test, power take-off module and constant load; Also comprise moment monitoring constant load state rotation speed monitoring module and respectively with the control module of power take-off module and rotation speed monitoring model calling; Described monitoring modular obtains the speed difference information of constant load and this information is sent to control module, and described control module regulates the output power of power take-off module according to the rotary speed information of constant load, makes constant load keep constant duty; Also comprise data processing module, described data processing module connects Devices to test and control module respectively, obtains, records and analyze the operational factor of Devices to test and the power of power take-off module.The present invention adopts the mode of measuring voltage electric current to carry out indirect measuring mechanical output, and automaticity is high, is easy to Full-computerized collection and calculates.
Description
Technical field
The present invention relates to accurate measurement method and the system of work device output power, particularly a kind of measuring method for intermittent work device output power value and system.
Background technology
In actual production, for the equipment of new research and development, before application of putting into production, need to measure it, to determine the various parameters that this equipment runs, determine how could provide optimal external condition for equipment, allow equipment be operated in optimum condition.Traditional measuring method is generally utilize survey instrument directly to measure this equipment, draws its correlation parameter run.But for some special machine equipment, it exports non-constant and wide dynamic range, and (its output has Intermittent Features, the dynamic change of output shaft rotating speed and output shaft torque is large), now traditional checkout equipment and detection method are not also suitable for this plant equipment.
Such as, application number is the patent of invention of 201310321824.4, discloses a kind of magnetic hot systems, this magnetic hot systems is made up of hundreds and thousands of magnetic heat engine unit, each magnetic heat engine unit, by the temperature of control break soft magnetism, produces heat erasure effect processed, drives line shaft to rotate external output mechanical energy.When needing to measure the such system output power of magnetic heat engine and operational factor (comprising temperature environment parameter, line shaft rotating speed size and output power size), in order to reduce measurement cost, can not large-scale production hundreds of magnetic heat engine unit form magnetic heat engine system, and then this magnetic hot systems is measured; Production magnetic heat engine unit that can only be independent, then the output power of this magnetic heat engine unit is measured, with determine whole magnetic hot systems optimal operating parameter (optimal operating parameter---when system reaches maximum conversion efficiency, required peripheral condition of work, such as: heat source temperature, thermal source uninterrupted, sink temperature, low-temperature receiver uninterrupted, output shaft rotating speed, load etc.).Only have after accurately measuring and obtain related data, run under just likely guaranteeing to allow whole system maintain an optimum condition, obtain optimal conversion efficiency.Although the external output power of whole magnetic hot systems is large and stable, for independent magnetic heat engine unit, the power exported is intermittent, and existing power-measuring device cannot accurately measure the size of this equipment output power at all.In addition, because the output power of single magnetic heat engine unit is very little, and existing measuring equipment is general all only measures for high-power constant rotating shaft, directly measure the result obtained and actual value far apart.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The object of the present invention is to provide a kind of measuring method and the system that can be used for intermittent work device output power, being intended to solve traditional measuring method and system cannot the technical matters measured of the output work of, do work intermittent equipment little to output power and power accurately.
Technical scheme of the present invention is as follows: a kind of measuring system for intermittent work device output power value, wherein, comprises Devices to test, power take-off module and constant load; Described Devices to test, power take-off module all connect constant load, do work to constant load simultaneously;
Also comprise the monitoring modular of moment monitoring constant load duty and the control module be connected with power take-off module and monitoring modular respectively; Described monitoring modular obtains the duty change information of constant load, and send to control module after being amplified by this change information, described control module regulates the output power of power take-off module according to the duty change information of constant load, makes the duty that constant load keeps constant;
Also comprise data processing module, described data processing module connects Devices to test and power take-off module respectively, obtains, records and analyze the operational factor of Devices to test and the power of power take-off module;
Also comprise display module, the analysis result of described display module display data processing module.
The described measuring system for intermittent work device output power value, wherein, described Devices to test comprises magnetic heat engine, and described power take-off module comprises motor and driving circuit, and described constant load comprises damping motor; Described magnetic heat engine, motor and damping motor are connected to form the power system of sustainable operation by belt or gear;
Described monitoring modular comprises speed probe, and described speed probe is connected to rotating ratio comparatively amplifying circuit; The speed probe of monitoring modular detects the actual speed of damping motor in real time, the actual speed of damping motor and the rated rotational frequency of setting is compared, and difference value is scaled up, be transferred to control module; Described control module comprises power electronic element, the speed difference signal that control module sends according to monitoring modular, regulates the output power of motor in power take-off module, makes damping motor maintain setting speed constant.
A kind of measuring method for intermittent work device output power value, wherein, by Devices to test, power take-off module, constant load is joined together to form a dynamic system, and accurately maintain the dynamic stability of this system, by measuring the variable quantity of power take-off module output power, indirect measuring goes out the output power of Devices to test; Described method of testing comprises the following steps:
A, power take-off module are connected with constant load, the constant duty of setting constant load; Power take-off module works, and constant load is reached and accurately remains on the constant duty of setting, the now instantaneous power P of data processing module record power take-off module
0, draw power P
0with the image of time;
B, Devices to test is connected constant load, due to the interrupted output of equipment to be detected, interval disturbance is produced to the duty of constant load, utilize the duty of monitoring module monitors constant load, and the duty change information of constant load is sent to control module, control module according to the output power of this change information fine adjustment power take-off module, under making constant load remain on the constant duty of setting, the instantaneous power P of data processing module real time record power take-off module
1, obtain power P
1with the image of time;
C, by power P
1-time and power P
0-temporal image compares analysis, draws the power P of Devices to test
surveywith the image of time;
The constant duty parameter of D, recording constant load, records the operational factor of Devices to test simultaneously;
The operational factor of E, arbitrarily change Devices to test, repeats steps A, B, C and D;
F, the interpretation of records Devices to test corresponding output power under different operational factor, obtains optimal operating parameter group.
The described measuring method for intermittent work device output power value, wherein, in described steps A, described power take-off module comprises motor and driving circuit thereof, and described constant load comprises damping motor; Utilize belt or gear to be connected with damping motor by motor, and set the constant rotational speed of damping motor; Motor works, and makes damping motor according to the constant rotational speed running of setting; Record now inputs electric current and the voltage of motor, calculates power input P
0, and make power input P
0with the image of time.
The described measuring method for intermittent work device output power value, wherein, in described step B, described Devices to test is magnetic heat engine, and described monitoring modular is with the speed probe of rotating ratio compared with amplifying circuit; Utilize belt or gear magnetic heat engine, motor and damping group of motors to be fitted together, form the power system of sustainable operation; Magnetic heat engine and motor do work to damping motor simultaneously, the real-time rotate speed of speed probe monitoring damping motor, real-time rotate speed and the constant rotational speed preset are compared and difference amplified, monitoring modular sends to control module speed difference information, described control module regulates the voltage and current of input motor according to this information, operates under making damping motor remain on the constant rotational speed of setting.
The described measuring method for intermittent work device output power value, wherein, in described step B, the rotary speed information of damping motor is changed into pulse signal by speed probe, relatively the pulse signal that current real-time rotate speed transforms the pulse signal obtained and the constant rotational speed of presetting compares by amplifying circuit, and sends to control module after both difference being amplified.
The described measuring method for intermittent work device output power value, wherein, in described step B, the voltage and current of record input motor, calculates the power P of motor
1, make P
1with the image of time.
The described measuring method for intermittent work device output power value, wherein, in described step C, by P
0with P
1curve be presented in same power against time coordinate diagram, for the P on any one time point on time shaft
0with P
1difference be the instantaneous output P of magnetic heat engine on this time point
survey.
The described measuring method for intermittent work device output power value, wherein, in described step D, the rotating speed of record damping motor and the operational factor of magnetic heat engine, described operational factor comprises the rotating speed of the temperature of magnetic heat engine thermal source, thermal source uninterrupted, the temperature of low-temperature receiver, low-temperature receiver uninterrupted, soft magnetism model, soft magnetic size and line shaft.
Beneficial effect of the present invention: the present invention is by being placed in the system of a sustainable operation by Devices to test, and it is constant to maintain the running status of this system by monitoring modular and control module, by the change of the output power of other work device in measuring system, draw the output power of Devices to test indirectly, accurately; Optimal parameter measuring system provided by the invention is easy to assembly, automaticity is high, and its measuring method is simple and practical, is very suitable for the parameter measurement of the equipment (the magnetic heat engine as in technical background) that some output powers are little, the dynamic change of output state is large.Because system rotating speed maintains certain numerical value all the time, its every resistance is all constant, and that is utilize this method to measure, resistance is zero on the impact of measuring accuracy, and measuring accuracy is high.
Accompanying drawing explanation
Fig. 1 is the module map of system in the present invention.
Fig. 2 is the process flow diagram of the inventive method.
Fig. 3 is the module map of the embodiment of the present invention.
Fig. 4 is P in embodiment
0with P
1image schematic diagram.
Embodiment
For making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.
In actual production, there are some equipment, these equipment monomer output powers are little, and the dynamic change of acting process is large.Existing power detection device is utilized to be difficult to directly measure accurately the output power of this equipment, and be difficult to describe its behavioral characteristics accurately, therefore have no way of determining the optimum working parameter (make equipment output power maximum, or allow equipment reach the equipment operational factor of most high conversion efficiency) of equipment.
The invention discloses a kind of output power measurement method and system for this equipment, the module frame chart of its system as shown in Figure 1, comprises Devices to test, power take-off module and constant load; Described Devices to test, power take-off module all connect constant load, do work to constant load simultaneously; The monitoring modular also comprising the duty of moment monitoring constant load and the signal that can export according to monitoring modular carry out the control module of quick adjustment to power take-off module; Monitoring modular obtains the actual working state information (this status information can be rotary speed information, monochrome information, temperature information etc.) of constant load and this information and the standard operating conditions information (i.e. constant duty information) preset is compared, control module is sent to after difference value being amplified, control module flows to the power of constant load according to this difference value size adjustment power take-off module, makes constant load keep the duty of setting constant; Also comprise data processing module, data processing module connects Devices to test and power take-off module respectively, obtains, records and analyze the operational factor of Devices to test and the power of power take-off module; Also comprise display module, the analysis result of described display module display data processing module.
The present invention by Devices to test is placed in a sustainable operation, the system of dynamic stability, adding of Devices to test must cause this system by disturbance, the contribution (acting) made system due to Devices to test is inevitable be existed one with the variable quantity of system and directly contact, in the present system, can be understood as the energy that equipment to be detected increases system, equal power take-off module and reduce the amount exported.Because the duty of constant load remains unchanged all the time, its every dynamic resistance is all constant, that is utilizes this method to measure, and resistance is zero on the impact of measuring accuracy.The dynamic stability of system is maintained by the moment, the simultaneously variable quantity that externally exports of Measurement accuracy power take-off module, can by calculating the instantaneous output indirectly obtaining Devices to test, and then determine its work in every parameter, so that the optimum working parameter of the equipment of acquisition or judge this equipment (such as: detect the single device of new production, whether its conversion efficiency meets design standards) whether up to specification.
As shown in Figure 2, be method flow schematic diagram of the present invention, comprise the following steps:
A, power take-off module and constant load realize physical connection, the constant duty (such as rotating speed 2 revs/min) of setting constant load; Power take-off module actuating motor rotates, and makes constant load reach the rotating speed of setting and accurately remain on constant duty, the now instantaneous power P of data processing module record power take-off module
0, draw power P
0with the image of time;
B, Devices to test is connected constant load, due to the interrupted output of equipment to be detected, interval disturbance is produced to the duty of constant load, utilize the duty of monitoring module monitors constant load, and the duty change information of constant load is sent to control module, control module according to the output power of this change information fine adjustment power take-off module, under making constant load remain on the constant duty of setting, the instantaneous power P of data processing module real time record power take-off module
1, obtain power P
1with the image of time;
C, by power P
1-time and power P
0-temporal image compares analysis, draws the power P of Devices to test
surveywith the image of time;
The constant duty parameter of D, recording constant load, records the operational factor of Devices to test simultaneously;
The operational factor of E, arbitrarily change Devices to test, repeats steps A, B, C and D;
F, the interpretation of records Devices to test corresponding output power under different operational factor, obtains optimal operating parameter group (equipment to be detected reaches maximum conversion efficiency, or the operational factor of peak power output).
In steps A, provide the system (power take-off module and constant load) of a dynamic stability, and draw the running parameter of this system cloud gray model: power take-off module output power P
0the duty K(making constant load reach setting such as reaches the temperature, rotating speed, dynamic resistance moment size etc. of setting).
In step B, added by Devices to test in this system, Devices to test has an impact to constant load simultaneously.When Devices to test does not work, the duty K of constant load is constant, and power take-off module output power is P
0; When Devices to test does work to constant load, the duty K of constant load produces trickle change, and monitoring modular catches this change information, is amplified and sends to control module rapidly, and control module controls power take-off module, makes its output power P
0be reduced to P
1, constant with the duty K maintaining constant load.Suppose that the output power to constant load of Devices to test is P
survey, so certainly exist: P
0=P
1+ P
survey.Because adjustable output device power can be measured accurately, so by the accurate output power P measuring power take-off module
1the power P of Devices to test can be drawn accurately
survey.
In step C, can by P
0and P
1be recorded in same power against time image, utilize mathematical computations to draw P
surveyimage, to reduce error, improve accuracy.
In step D, the operational factor (comprising working environment parameter, each number of element types dimensional parameters etc.) of record Devices to test, forms the preset parameter group of Devices to test, by this preset parameter group and P
surveyimage is corresponding, draws the output power P of this Devices to test under this preset parameter group
survey.
In step e, by changing arbitrarily the parameter in preset parameter group, then measure P
survey, draw the output power P of Devices to test under different parameters group
survey.
In step F, the data that interpretation of records obtains, form the database corresponding with this Devices to test.
Measuring method of the present invention and system may be used for the output power measurement of the equipment to some new research and development, also may be used for whether meeting established standards to the equipment of the new production detecting this type.
Below, in conjunction with a specific embodiment, the present invention will be described in detail.
Embodiment 1
Devices to test in the present embodiment is the magnetic heat engine unit (i.e. magnetic heat engine) in a kind of magnetic hot systems (application number is 201310321824.4) of patent of invention.This magnetic hot systems is made up of thousands of up to a hundred magnetic heat engine unit, and each magnetic heat engine unit replaces change by thermal source and low-temperature receiver and realizes soft magnetic property change, drives line shaft to rotate, external output power by the change of soft magnetic property.The Power output of single magnetic heat engine unit is that (this is because thermal source and low-temperature receiver are the intensification and the cooling that are realized soft magnetism by the method for heat trnasfer to interval, when soft magnetism temperature reaches a certain temperature, line shaft just can be driven to rotate an angle), its output power is very little, utilize existing power detection device, be difficult to measure its output power: on the one hand, the output power of magnetic heat engine unit is too little, is not enough to urge power detection device work; On the other hand, the not continual drive line shaft of magnetic heat engine unit rotates, and its output has intermittence, and dynamic change is large.
As shown in Figure 3, in the present embodiment, Devices to test is magnetic heat engine (i.e. magnetic heat engine unit), and power take-off module comprises motor and driving circuit thereof, and constant load comprises damping motor; Magnetic heat engine, motor and damping motor are connected to form the power system of sustainable operation by belt or gear; Monitoring modular is speed probe, and speed probe is connected to rotating ratio comparatively amplifying circuit; Control module according to speed probe detect the tach signal of the damping motor obtained change regulate the power of motor, the rotating speed of damping motor is remained unchanged.
In the present embodiment, motor selection quality better, the high-quality motor that machining precision is high, guarantee that its input electric energy and outputting power have good linear corresponding relation.
In the present embodiment, the line shaft of magnetic heat engine accesses this power system by single-phase bearing, when ensureing that the line shaft of magnetic heat engine externally exports, and can by power transmission to system; When magnetic heat engine does not work, resistance can not be produced to power system.
In the present embodiment, damping motor is made up of the generator of an accurate high-quality and a stable resistance, and the mechanical energy that this generator obtains and the electric energy transformed have good linear relationship.
In the present embodiment, speed probe converts the tach signal of generator to pulse signal.In order to ensure the sensitivity of speed probe, can find rapidly that change appears in the rotating speed of generator accurately, setting generator amature often rotates a circle, and speed probe can acquire hundreds of or thousands of pulses signal.In practical application, the speed probe of photo-electric or the speed probe of electromagnetic type can be adopted.
In the present embodiment, speed probe also connects a rotating speed comparison amplifier, this rotating speed comparison amplifier can compare amplifying circuit for conventional signal, compare for the pulse signal that pulse signal corresponding for the real-time rotate speed of generator amature is corresponding with the constant rotational speed of setting, show that its variable quantity (different information) is incited somebody to action and amplified by this variable quantity, improve the accuracy measured.
In the present embodiment, control module comprises power electronic element, and the voltage and current (namely inputing to the voltage and current of motor) that power electronic element can export it according to the change information of generator speed carries out accurate fine setting.By finely tuning this voltage and current, the output power of motor can be controlled accurately, thus make system Restoration dynamics balance again.
In the present embodiment, the concrete steps of measuring method are as follows:
S1, utilize belt or gear to be connected with damping motor by motor, and set the constant rotational speed of damping motor; Motor works, and makes damping motor according to the constant rotational speed running of setting; Record now inputs electric current and the voltage of motor, calculates power input P
0, and make power input P
0with the image of time.
S2, utilize belt magnetic heat engine, motor and damping group of motors to be fitted together, form the power system of sustainable operation; Magnetic heat engine and motor do work to damping motor simultaneously, rotating speed (i.e. the rotating speed of the generator amature) convert information of damping motor is become pulse signal by speed probe, through rotating speed comparison amplifier relatively after obtain the different information of rotating speed, control module is sent to after being amplified by this different information again, described control module regulates the voltage and current of input motor according to different information, operates under making damping motor remain on the constant rotational speed of setting; The voltage and current of record input motor, calculates the power P of motor
1, make P
1with the image of time; .
S3, by P
0with P
1curve be presented in same power against time coordinate diagram, for the P on any one time point on time shaft
0with P
1difference be the output power P of magnetic heat engine on this time point
survey.
S4, the rotating speed of record damping motor and the operational factor of magnetic heat engine, and and P
surveycorresponding.Described operational factor comprises the rotating speed of the temperature of magnetic heat engine thermal source, thermal source uninterrupted, the temperature of low-temperature receiver, low-temperature receiver uninterrupted, soft magnetism model, soft magnetic size and line shaft.
Operational factor and the rotating speed of setting damping motor of S5, arbitrarily conversion magnetic heat engine, repeat step S1, S2, S3 and S4, the data drawn carried out arrangement backup.
As shown in Figure 4, be the present embodiment under a certain carrying out practically parameter of magnetic heat engine, the power P obtained
0and P
1image.P
0motor power (output) image when not connecing magnetic heat engine, be a straight line being parallel to X-axis (in actual measurement, due to factors such as friction force, P
0straight line can there is faint fluctuation, but in same system, the extraneous factors such as friction force are constant, do not affect the accuracy of measurement).P
1be connect the motor power (output) image after magnetic heat engine, as can be seen from the figure, when magnetic heat engine is done work, the power of motor slowly reduces along with the increase of magnetic heat engine power, and when magnetic heat engine is not done work, the power of motor is P
0(i.e. P
1with P
0overlap).Because magnetic heat engine is intermittent acting, therefore P
1also be intermittent fluctuation (Fig. 4 is through the figure of amplification, in actual measurement, because the power of magnetic heat engine is less, P
1fluctuation not obvious, need through amplification calculate, with ensure measure accuracy).In figure, hatched area is t
0the size of magnetic heat engine acting in the time.
The present embodiment passes through P
0with P
1curve be presented in same power against time coordinate diagram, for the P on any one time point on time shaft
0with P
1difference be the output power P of magnetic heat engine on this time point
survey; Or, directly calculate the area of the closed image that two curves are formed, the output work size of magnetic heat engine can be obtained.More direct, by changing arbitrarily the operational factor of magnetic heat engine, obtain multiple series of images, P in more each image
0and P
1the size (area large explanation magnetic heat engine output work is large) of the area of the closed image that two curves are formed, gets final product the operational factor that direct magnetic heat engine output work of must sening as an envoy to is maximum.
In practical application, the automatic exchange system of the operational factor of magnetic heat engine can be configured, such as, can configure an automatic heating and cooling system, make thermal source and low-temperature receiver reach the temperature of setting; Soft magnetism automatic-exchanging system can be configured, realize automatically changing soft magnetism, change the parameter such as model, shape, size of soft magnetism; Line shaft rotation speed change system can be configured, realize the quantity automatically selecting magnetic heat engine soft magnetism, to change the slewing rate of line shaft.Meanwhile, in the present embodiment, configure a central data processing system, process, monitor and store detecting all data obtained, to realize the full-automation of system of the present invention and to facilitate user to inquire about.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (8)
1. for a measuring system for intermittent work device output power value, it is characterized in that, comprise Devices to test, power take-off module and constant load; Described Devices to test, power take-off module all connect constant load, do work to constant load simultaneously;
Also comprise the monitoring modular of moment monitoring constant load duty and the control module be connected with power take-off module and monitoring modular respectively; Described monitoring modular obtains the duty change information of constant load, and send to control module after being amplified by this change information, described control module regulates the output power of power take-off module according to the duty change information of constant load, makes the duty that constant load keeps constant;
Also comprise data processing module, described data processing module connects Devices to test and power take-off module respectively, obtains, records and analyze the operational factor of Devices to test and the power of power take-off module;
Also comprise display module, the analysis result of described display module display data processing module;
Described Devices to test comprises magnetic heat engine, and described power take-off module comprises motor and driving circuit, and described constant load comprises damping motor; Described magnetic heat engine, motor and damping motor are connected to form the power system of sustainable operation by belt or gear;
Described monitoring modular comprises speed probe, and described speed probe is connected to rotating ratio comparatively amplifying circuit; The speed probe of monitoring modular detects the actual speed of damping motor in real time, the actual speed of damping motor and the rated rotational frequency of setting is compared, and difference value is scaled up, be transferred to control module; Described control module comprises power electronic element, the speed difference signal that control module sends according to monitoring modular, regulates the output power of motor in power take-off module, makes damping motor maintain setting speed constant.
2. the measuring method for intermittent work device output power value, it is characterized in that, by Devices to test, power take-off module, constant load is joined together to form a dynamic system, and accurately maintain the dynamic stability of this system, by measuring the variable quantity of power take-off module output power, indirect measuring goes out the output power of Devices to test; Described measuring method comprises the following steps:
A, power take-off module are connected with constant load, the constant duty of setting constant load; Power take-off module works, and constant load is reached and accurately remains on the constant duty of setting, the now instantaneous power P of data processing module record power take-off module
0, draw power P
0with the image of time;
B, Devices to test is connected constant load, due to the interrupted output of equipment to be detected, interval disturbance is produced to the duty of constant load, utilize the duty of monitoring module monitors constant load, and the duty change information of constant load is sent to control module, control module according to the output power of this change information fine adjustment power take-off module, under making constant load remain on the constant duty of setting, the instantaneous power P of data processing module real time record power take-off module
1, obtain power P
1with the image of time;
C, by power P
1-time and power P
0-temporal image compares analysis, draws the power P of Devices to test
surveywith the image of time;
The constant duty parameter of D, recording constant load, records the operational factor of Devices to test simultaneously;
The operational factor of E, arbitrarily change Devices to test, repeats steps A, B, C and D;
F, the interpretation of records Devices to test corresponding output power under different operational factor, obtains optimal operating parameter group.
3. the measuring method for intermittent work device output power value according to claim 2, is characterized in that, in described steps A, described power take-off module comprises motor and driving circuit thereof, and described constant load comprises damping motor; Utilize belt or gear to be connected with damping motor by motor, and set the constant rotational speed of damping motor; Motor works, and makes damping motor according to the constant rotational speed running of setting; Record now inputs electric current and the voltage of motor, calculates power input P
0, and make power input P
0with the image of time.
4. the measuring method for intermittent work device output power value according to claim 3, is characterized in that, in described step B, described Devices to test is magnetic heat engine, and described monitoring modular is with the speed probe of rotating ratio compared with amplifying circuit; Utilize belt or gear magnetic heat engine, motor and damping group of motors to be fitted together, form the power system of sustainable operation; Magnetic heat engine and motor do work to damping motor simultaneously, the real-time rotate speed of speed probe monitoring damping motor, real-time rotate speed and the constant rotational speed preset are compared and difference amplified, monitoring modular sends to control module speed difference information, described control module regulates the voltage and current of input motor according to this information, operates under making damping motor remain on the constant rotational speed of setting.
5. the measuring method for intermittent work device output power value according to claim 4, it is characterized in that, in described step B, the rotary speed information of damping motor is changed into pulse signal by speed probe, relatively the pulse signal that current real-time rotate speed transforms the pulse signal obtained and the constant rotational speed of presetting compares by amplifying circuit, and sends to control module after both difference being amplified.
6. the measuring method for intermittent work device output power value according to claim 5, is characterized in that, in described step B, the voltage and current of record input motor, calculates the power P of motor
1, make P
1with the image of time.
7. the measuring method for intermittent work device output power value according to claim 6, is characterized in that, in described step C, by P
0with P
1curve be presented in same power against time coordinate diagram, for the P on any one time point on time shaft
0with P
1difference be the instantaneous output P of magnetic heat engine on this time point
survey.
8. the measuring method for intermittent work device output power value according to claim 7, it is characterized in that, in described step D, the rotating speed of record damping motor and the operational factor of magnetic heat engine, described operational factor comprises the rotating speed of the temperature of magnetic heat engine thermal source, thermal source uninterrupted, the temperature of low-temperature receiver, low-temperature receiver uninterrupted, soft magnetism model, soft magnetic size and line shaft.
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| CN106817064B (en) * | 2015-11-27 | 2019-01-11 | 新唐科技股份有限公司 | The driving method of alternating current generator and the motor driver for applying it |
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