JPH0816548A - Motor operating characteristic analysis device - Google Patents

Abstract

PURPOSE:To determine the operating characteristic of a motor in its mounted state without performing an experiment or a trial. CONSTITUTION:The characteristics of the pulse motor and the DC motor collected from a catalogue, etc., and the additional information on the motors are preserved in a motor data base 50. An operator designates a motor to be an analysis object by selecting the motor from the motor base 50 or performing a direct numerical input and the motor characteristic of the designated motor is written in a data storage part 40 by a motor characteristic input part 11. The analysis condition required for an analysis is designated by the operator and an analysis condition input part 12 sites the designated analysis condition in the data storage part 40. An arithmetic processing part 13 calculates the operating characteristic when the analysis object motor is mounted on a prescribed device based on the analysis conditions and the motor characteristic stored in the data storage part 40. A result display part 20 displays the calculation result of the arithmetic processing part 13 on the display part 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention shows what operation characteristics a pulse motor (stepping motor) and a DC motor (DC motor) used as a drive source for mechatronics products, etc., when mounted in products. The present invention relates to a motor operation characteristic analysis device for analyzing the.

[0002]

2. Description of the Related Art In recent years, there has been a strong demand in the market for information equipment, OA equipment, FA equipment and the like to be smaller, lighter, less expensive and more sophisticated. In order to meet these demands, demands for high speed, responsiveness, positioning accuracy, and the like in the motor of the drive source are also increasing. Conventionally, the selection of a motor used in such devices as information equipment, OA equipment and FA equipment is based on the operating conditions such as the moment of inertia of the drive system and the load such as viscosity and friction torque, and the driving speed and resolution. , Was done by referring to each specification shown in the catalog. The specifications referenced from the catalog for pulse motors are the speed-torque characteristic curve that is the characteristics of the target motor, the maximum self-starting frequency, the maximum static torque, the step angle, etc. The torque constant, the rated torque, the rated speed, and the like. However, since the values in the catalog are only values under standard driving conditions, it was not known whether the motor would operate normally depending on the driving method and operating conditions when the motor was installed in the product. Therefore, a method of conducting various experiments and confirming them has been adopted. As a result of the experiment, when it was necessary to change the motor selected in the design, it was necessary to confirm the suitability of the motor by carrying out trial production and experiments again. Therefore, a large amount of trial production cost and man-hours were spent.

[0003]

As described above, the following problems have been encountered in the selection of conventional motors. It is not clear whether the motor operates normally when it is mounted on the product, based only on the catalog value of the motor. for that reason,
It was necessary to confirm whether the selected motor was appropriate by conducting evaluation and verification through trial manufacture and experiments. It is necessary to confirm various items such as rise time and responsiveness, stability against rotation speed and additional fluctuations, heat generation temperature and load, and margin for drive circuit variations in evaluation and verification by trial manufacture and experiment. However, in order to confirm all of these, a great deal of man-hours and trial production costs were required.

[0004]

In order to solve the above-mentioned problems, the first invention searches the characteristics of a motor to be analyzed from a motor database in which the motor characteristics of a plurality of motors are stored in advance, and the searched motor characteristics are searched. The motor characteristic input unit for writing the motor characteristic of the analyzed motor to the data storage unit, and the operating characteristic when the analyzed motor is mounted on a predetermined device based on the motor characteristic stored in the data storage unit I am trying to analyze it. A second invention is a motor database and a motor characteristic input unit according to the first invention, an analysis condition input unit that writes a condition for performing the analysis in the data storage unit, and an arithmetic processing unit that performs the analysis. A result display section for displaying the analysis result on a display device. A third aspect of the present invention is a case where a motor characteristic of a pulse motor to be analyzed and a data storage unit that stores the analysis condition, and a case where the pulse motor is mounted in a predetermined device based on the motor characteristic and the analysis condition stored in the data storage unit Analysis of inertial load characteristics with respect to the self-starting frequency of the pulse motor to be analyzed,
A resonance frequency analysis, a one-step response analysis, a continuous operation characteristic analysis, an optimum operation analysis, or a heat generation temperature analysis. A fourth aspect of the present invention relates to the motor characteristics of the DC motor to be analyzed and a data storage section for storing the analysis conditions, and the torque of the DC motor to be analyzed when mounted on a predetermined device based on the motor characteristics and the analysis conditions. An arithmetic processing unit that analyzes current characteristics and speed characteristics with respect to torque, or rise characteristic analysis is provided.

[0005]

According to the first aspect of the present invention, since the motor operation characteristic analysis device is configured as described above, the motor characteristic of the motor to be analyzed is searched from the motor database by the motor characteristic input unit, and the searched motor characteristic is searched. Is written in the data storage section. Based on the motor characteristics of the analysis target motor stored in the data storage unit, the operation characteristics of the analysis target motor when mounted on a predetermined device are analyzed by the motor operation characteristics analysis device. According to the second invention, the characteristics of the motor to be analyzed are retrieved from the motor database by the motor characteristic input unit and written in the data storage unit, and the conditions for analysis are written in the data storage unit by the analysis condition input unit. Be done. The arithmetic processing unit analyzes the operating characteristics of the analysis target motor when mounted on a predetermined device from the motor characteristics of the analysis target motor stored in the data storage unit and the conditions for analysis, and the analysis result is displayed as a result. Displayed on the display device by the unit. According to the third aspect of the invention, based on the motor characteristics and the analysis conditions of the pulse motor stored in the data storage unit, analysis of the inertial load characteristics with respect to the self-starting frequency when the pulse motor to be analyzed is mounted in a predetermined device, Resonance frequency analysis, one-step response analysis, continuous operation characteristic analysis, optimum operation analysis, or heat generation temperature analysis is performed by the arithmetic processing unit.
According to the fourth aspect of the present invention, based on the motor characteristics of the DC motor and the analysis conditions stored in the data storage unit, the current characteristics with respect to the torque and the speed characteristics with respect to the torque when the DC motor to be analyzed is mounted in a predetermined device. The analysis or the rising characteristic analysis is performed by the arithmetic processing unit. Therefore, the above problem can be solved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of the entire configuration of a motor operating characteristic analyzing apparatus showing an embodiment of the present invention. The motor operation characteristic analysis device is a device for assisting motor selection by performing operation analysis in a mounted state of a pulse motor and a DC motor used in a product device, and is a main processing unit configured by a computer or the like for performing operation analysis. Equipped with 10. A display device 20, an input device 30, a data storage unit 40, and a motor database 50 are connected to the main processing means 10 by a bus. The main processing means 10 is a motor characteristic input unit 11
And an analysis condition input unit 12, an arithmetic processing unit 13, and a result display unit 14. The display device 20 is used to display commands and visually display the input information, the calculation result of the main processing unit 10, and the like, and is configured by a display such as a CRT. The input device 30 is for inputting numerical values of motor characteristics or analysis conditions and for selecting commands, and is composed of a keyboard or a mouse. The data storage unit 40 has a function of storing the motor characteristic value input by the motor input unit 11, the analysis condition for the motor characteristic analysis input by the analysis condition input 12, and the analysis result. The motor database 50 includes product names of pulse motors and DC motors, basic specifications shown in catalogs, drawing numbers of additional information,
Information such as price and size is stored in advance.

The motor characteristic input unit 11 is a processing unit for inputting the characteristics of the motor required for analysis to the data storage unit 40, and includes a numerical value input unit 11-1, a drawing number designation input unit 11-2, and a search processing unit. 11-3. Analysis condition input section 1
Reference numeral 2 denotes a driving condition input unit 12-1 for designating a driving method and a driving voltage of a motor according to an analysis item, and an operating condition input unit 12-2 for designating operating conditions such as a driving time and a driving frequency (speed). And a load characteristic input unit 12-3 for inputting the moment of inertia J applied to the motor shaft of the drive system, the viscosity coefficient D, and the friction torque T. The load characteristic input unit 12-3 directly inputs the values of the inertia moment J, the viscosity coefficient D, and the friction torque T, and also calculates the load obtained by another load analysis device 60 that analyzes the load of the drive system. It is also possible to take in the value of. The arithmetic processing unit 13 is a processing unit that analyzes the operating characteristics of the motor, and includes a pulse motor analyzing unit 13-1 that performs an analytical operation for the pulse motor and a DC analyzing unit 13-2 that performs an analytical operation for the DC motor. ing. The pulse motor analysis unit 13-1 analyzes the inertial load characteristic with respect to the self-starting frequency (hereinafter referred to as self-starting frequency-inertial inertia characteristic analysis), resonance frequency analysis, one-step response analysis, continuous operation characteristic analysis, It has a function of performing six types of analytical calculations, namely, optimum operating characteristic analysis and heat generation temperature analysis. The DC motor analysis unit 13-2 has a function of performing two types of analytical calculations, that is, basic characteristic analysis and rising characteristic analysis. The result processing unit 14 has a function of performing a process on the calculation result of the calculation processing unit 13 and displaying a numerical value output or a graph output on the display device 20.

Next, the operation of the motor operation characteristic analysis device of FIG. 1 will be described with reference to the drawings. FIG. 2 is a diagram showing stored information about the pulse motor stored in the motor database 50 shown in FIG. 1, and FIG. 3 is a diagram showing stored information about the DC motor. As shown in FIGS. 2 and 3, the motor database 50 previously stores specifications and additional information regarding the motor from a catalog or the like. FIG. 4 is a flowchart showing the processing of the motor characteristic input unit in FIG. In the processing of steps S1 to S13 shown in this figure,
The motor characteristics of the motor to be analyzed are input and stored in the data storage unit 40. That is, in step S1, the operator uses the input device 30 to select a pulse motor or a DC motor. In step S2, the motor database 50
It is determined whether to search for. That is, the operator determines whether the motor to be analyzed is one whose information is stored in the motor database 50 or another motor is used. When a motor whose information is stored in the motor database 50 is used, step S
In step S3 after 2, the operator specifies the search method. It is selected whether to search by inputting motor characteristics or by designating a drawing number. When the motor characteristics are input and the search is performed, the operator inputs the characteristics of the motor to be searched in the numerical value input unit 11-1 as search conditions in step S4.

FIG. 5 is a diagram showing the search conditions for the pulse motor, and FIG. 6 is a diagram showing the search conditions for the DC motor. The operator inputs search conditions on the panels shown in FIGS. 5 and 6 displayed on the display device 20. In the subsequent step S5, the search processing section 11-3 searches the motor database 50 for a motor that matches the search conditions as shown in FIG. 5 or 6. If there is a motor that matches the search conditions in the motor database 50, step S6
Then, select one of the motors that match the search criteria. The details of the motor characteristics of the selected motor are displayed on the display device 20 in step S9. Here, when the drawing number of the motor to be searched is already known, step S
The drawing number designation is selected in 3, and in step S8, the operator designates the drawing number in the drawing number designation input unit 11-2. In subsequent step S9, the search processing unit 11-3 searches the motor database 50 for a motor corresponding to the designated drawing number. If there is a motor matching the drawing number in the motor database 50, the process proceeds to step S9. In step S10, the information of the motor displayed in step S9 is confirmed by the operator, and if the information is proper information, it is stored in the data storage unit 40.
If the motor information is inappropriate, step S11
In step S12, it is determined whether or not to perform the search again.
The characteristics are modified by. On the other hand, in step S2, the motor to be analyzed may not be stored in the motor database 50, but may be analyzed using the specifications of another motor. For example, it is possible to analyze a motor that has not been written in the motor database 50.

FIG. 7 is a diagram showing the information items required for analyzing the pulse motor, and FIG. 8 is a diagram showing the information items required for analyzing the DC motor. When the analysis is performed using the specifications of the motor other than the information stored in the motor database 50, in step S13, the operator inputs the calculation information for analysis shown in FIG. And enter additional information. This numerical value input section 11-1
The information input to is stored in the data storage unit 40.
On the other hand, in the analysis condition input unit 12, the drive method and drive voltage of the motor instructed by the operator are determined by the drive condition input unit 12
-1 is input to the data storage unit 40, and the data storage unit 40 stores them. The driving time and the driving frequency instructed by the operator are input and stored in the data storage unit 40 by the operation condition input unit 12-2. In addition, a moment of inertia J of the drive system, a viscosity coefficient D, which is input from an operator's instruction or an external load analysis device 60,
And the friction torque T are input and stored in the data storage unit 40 by the load characteristic input unit 12-3. The arithmetic processing unit 13 sequentially reads the information for analysis stored in the data storage unit 40 and performs various analytical calculations of the motor. The result of the analytical calculation is output to the display unit 20 via the result display unit 14.

Various analysis processes will be described in the following (1) to (8). (1) Self-starting frequency-inertial load characteristic analysis FIG. 9 is a flowchart showing the processing of self-starting frequency-inertial load characteristic analysis in FIG. Step S of FIG.
In FIG. 21, the operator specifies the characteristics of the motor to be analyzed by selecting from the motor database 50 or directly inputting a numerical value in the motor characteristics input unit 11 in the motor operation characteristics analysis device of FIG. The characteristics are input to the data storage unit 40. In the following step S22, the calculation range J _{1 of the} inertial load to be obtained is designated, and the self-starting frequency f in the calculation range designated in step S23 is calculated by the arithmetic processing unit 13. Step S24
At, the self-starting frequency f, which is the calculation result, is displayed as a graph on the display device 20 by the processing of the result display unit 14.

FIG. 10 is a diagram showing the output result of FIG. Here, the relationship between the self-starting frequency f and the inertial load is as shown in equation (a) from the relationship between the maximum self-starting frequency f _s of the motor alone, the rotor inertia moment J _R, and the load inertial moment J _L. You can ask. Normally, the self-starting frequency of the motor alone can be found in the catalog,
The self-starting frequency f with a load added is unknown. In the motor operating characteristic analysis device of FIG. 1, the self-starting frequency f in the state where the load is added can be easily obtained, and the starting frequency at the start-up of the pulse motor can be determined using the output result. .

[Equation 1] (2) Resonant Frequency Analysis FIG. 11 is a flowchart showing the process of resonant frequency analysis in FIG. In step S31 of FIG. 11, the motor characteristic input unit 11 in the motor operation characteristic analyzer of FIG. 1 specifies the characteristic of the motor to be analyzed by selecting from the motor database 50 or directly inputting a numerical value. The characteristics of the motor are input to the data storage unit 40. In the following step S32, the load characteristic is input to the data storage unit 40 by the load characteristic input unit 12-3, and in step S33, the arithmetic processing unit 13 causes the data storage unit 4 to operate.
The resonance frequency analysis is performed using the data stored in 0.
The arithmetic processing unit 13 obtains the value of the resonance frequency in the case of one-phase and two-phase excitation based on the equation (b). Next step S3
4, the calculation result of the arithmetic processing unit is displayed on the display device 20 by the processing of the result display unit 14.

[Equation 2] FIG. 12 is a diagram showing an angle and a torque characteristic curve. The resonance frequency f in the pulse motor can be calculated based on the slope at the stable point P ₀ as shown in FIG. 12 in the angle-torque characteristic of the pulse motor. In a pulse motor, vibration may increase or output torque may decrease in a certain speed range. Although it is necessary to avoid use in such a velocity region (resonance region), since the apparatus of FIG. 1 has a resonance frequency analysis function, the resonance frequency (velocity) can be easily obtained.

(3) One-Step Response Analysis FIG. 13 is a flowchart showing the processing of the one-step response analysis in FIG. In step S41 of FIG. 13, the motor characteristic input unit 11 in the motor operation characteristic analysis device of FIG. 1 specifies the motor to be analyzed by selecting from the motor database 50 or by directly inputting a numerical value,
The characteristics of the designated motor are input to the data storage unit 40. In step S42, the drive condition of the one-phase excitation, the two-phase excitation or the 1-2 phase excitation as the excitation method, the drive voltage, and the external additional resistance value are stored in the data storage unit via the drive condition input unit 12-1. Stored in 40. Continuing step S
In 43, the load characteristic of the analysis condition is loaded into the data storage section 40 by the load characteristic input section 12-3, and in step S44, the arithmetic processing section 13 performs the analysis calculation based on the information stored in the data storage section 40. In step S45, the generated torque, the current waveform, the motor displacement, the motor speed, the phase plane analysis diagram, and the like, which are the results of the analytical calculation, are output. FIG. 14 is a diagram showing an example of the displacement output of the one-step response. Basically, the dynamic characteristics of the pulse motor are calculated by considering the torque equation that approximates the angle-torque characteristic curve of the motor torque generated in proportion to the torque constant and the exciting current with a sine wave, and the resistance, inductance, and back electromotive force. Can be obtained by solving the voltage equation expressed as follows and the motion equation expressed in consideration of the moment of inertia of the rotor and the load, viscous resistance, and friction torque. In this embodiment, each equation is discretized with respect to current and velocity in the time direction and directly integrated to obtain the dynamic characteristic. By analyzing the dynamic characteristics, a displacement graph of the motor, a phase plane analysis diagram, and the like are obtained, and as a result, the operator can know the overshoot amount, settling time, and the like. For example. 14
From this, the operator can know the response and stability of the pulse motor.

(4) Continuous Operation Characteristic Analysis FIG. 15 is a flowchart showing the processing of the continuous operation characteristic analysis in FIG. In step S51 of FIG. 15, the motor characteristic input unit 11 in the motor operation characteristic analysis device of FIG. 1 specifies the motor to be analyzed by selecting from the motor database 50 or by directly inputting a numerical value, and the specified motor Is input to the data storage unit 40. In step S52, the drive condition input unit 12-1
The driving condition is specified by the
Stored in 0. In the following step S53, the load characteristic of the analysis condition is loaded into the data storage section 40 by the load characteristic input section 12-3. In step S54, the operation condition is input by the operation condition input unit 12-3, and the data storage unit 40
Stored in the calculation processing unit 13 in step S55.
Performs analytical calculation based on the information stored in the data storage unit 40. In step S56, the generated torque, current waveform, motor displacement, motor speed, phase plane analysis diagram, pulse rate, etc., which are the results of the analytical calculation, are output.

The drive condition designation in step S52 will be described. First, in step S52-1, the excitation method is designated. Excitation methods are 1-phase excitation and 2
There are phase excitation and 1-2 phase excitation methods, and the operator selects and specifies one of these three excitation methods. Further, various driving methods are used to improve the current rising characteristic, but the operator selects and specifies these driving methods in step S52-2. The drive method specified by the operator is normal drive, constant current drive for self-excited oscillation,
There are constant current drive, overvoltage drive, and two-voltage drive in the case of separately excited oscillation. A constant current driving method in the case of separately excited oscillation is a method in which a triangular wave having a low voltage V−ΔV, a high voltage V + ΔV, and a cycle 1 / f is used as a reference voltage with respect to a drive voltage V, and a detection resistor Rs × current is used as a reference voltage. In the overvoltage driving method, the pulse width (<1 /
In this method, the overvoltage V ₂ of f) is applied, and thereafter, the motor is driven by the reference voltage V ₁ . Further, the two-voltage driving method is a method in which the motor is driven by the overvoltage V ₂ at the leading edge Δt seconds of the pulse and thereafter by the reference voltage V ₁ .
The operator inputs drive parameters from the input device 30 while referring to the display input panel displayed on the display device 20 according to the selected and specified drive method.

FIG. 16 is a normal drive input panel, FIG. 17 is a self-oscillation constant current drive input panel, FIG. 18 is a separately excited oscillation constant current drive input panel, and FIG. 19 is an overvoltage drive input panel. FIG. 20 is a diagram showing a 2-voltage drive input panel. The operator inputs data corresponding to the blank portion of the input panel of FIGS. 16 to 20, and the driving condition input unit 12-1 stores the data in the data storage unit 40. The designation of operation conditions in step S54 will be described. In specifying the operating conditions, first, a control profile for driving the motor is defined. As a control method, trapezoidal control, exponential function control, or a method of directly specifying a table is possible. 21 shows an example of an input panel for trapezoidal control, FIG. 22 shows an example of an input panel for exponential function control, and FIG. 23 shows an example of an input panel for directly specifying a table. The operator is trapezoidal control, exponential function control,
Alternatively, one of the methods for directly designating the table is selected and designated, and depending on the driving method selected and designated, one of FIGS.
The drive parameters are input from the input device 30 while referring to the input panel displayed as described above. Here, in the case of trapezoidal control, the relationship between time and frequency for driving is input as a parameter, and in the case of exponential function control, in order to control time and frequency in driving, each of the following formulas (c) is configured: Parameters are entered. In the case of the method of directly specifying the table, the values of time T and frequency F of each control point are shown in FIG.
Is displayed, and the operator inputs the time T and the frequency F of each control point via the input device 30, respectively.

[0017]

(Equation 3) FIG. 24 is a diagram showing an example of a motor displacement graph which is an output of the continuous operation analysis, and FIG. 25 is a diagram showing another example of the motor displacement graph. It is important for the pulse motor to operate normally without step-out, and in the continuous operation characteristic analysis, the operator should confirm that the motor to be analyzed operates normally from the motor displacement graphs and phase plane analysis diagrams of FIGS. 24 and 25. You can know. For example, FIG. 24 shows normal operation of the motor, and FIG. 25 shows that the motor goes out of step.

(5) Optimal Motion Analysis Process FIG. 26 is a flowchart showing the process of optimal motion analysis in FIG. In step S61 of FIG.
Motor characteristic input unit 1 in the motor operation characteristic analysis device of FIG.
In 1, the motor to be analyzed is designated by selecting from the motor database 50 or by directly inputting a numerical value, and the characteristics of the designated motor are input to the data storage unit 40. In step S <b> 62, the drive condition input unit 12-1 specifies the drive condition, and the drive condition is stored in the data storage unit 40. In a succeeding step S63, the load characteristic of the analysis condition is loaded into the data storage section 40 by the load characteristic input section 12-3. In step S64, the operation condition input unit 12-3 specifies the operation condition and the operation condition is stored in the data storage unit 40. In step S65, the arithmetic processing unit 13 performs the analysis calculation based on the information stored in the data storage unit 40. . Note that the target speed and the target operating distance (pulse number) are designated as the operating conditions. In step S66, the generated torque, current waveform, motor displacement, motor speed, phase plane analysis diagram, optimum pulse rate, etc., which are the results of the analytical calculation, are output. In the optimum operation analysis, considering the pulse rate that reaches the target speed and target operating distance in the shortest time without the motor getting out of step, the line connecting the points of maximum speed on the phase plane, that is, the inclination of the orbit on the phase plane. The moment when the envelope curve reaches "0" is obtained as the pulse switching timing.

(6) Heat Generation Temperature Analysis FIG. 27 is a flow chart showing the heat generation temperature analysis processing in FIG. In step S71 of FIG. 27,
Motor characteristic input unit 1 in the motor operation characteristic analysis device of FIG.
In 1, the motor to be analyzed is designated by selecting from the motor database 50 or by directly inputting a numerical value, and the characteristics of the designated motor are input to the data storage unit 40. In step S <b> 72, the driving condition is specified by the driving condition input unit 12-1 and the driving condition is stored in the data storage unit 40. In a succeeding step S73, the load characteristic of the analysis condition is taken into the data storage section 40 by the load characteristic input section 12-3. In step S74, the operating condition is designated by the operating condition input unit 12-3 and stored in the data storage unit 40. Further, in step S75, the heating temperature calculation condition necessary for the heating temperature analysis of the motor is stored in the data storage unit 40. It The heat generation temperature calculation conditions include, for example, the emissivity of heat in the case of natural air cooling, and the wind speed in the case of forced air cooling. In step S76, the arithmetic processing unit 13 performs an analytical calculation based on the information stored in the data storage unit 40. In step S77, the heat generation temperature of the motor, which is the result of the analytical calculation, is displayed on the display device 20. In the heat generation temperature analysis, the shape of the motor is considered to be a cylinder, for example, and the surface area of the motor is obtained from the diameter and height of the motor held in the motor database 50. The heat generation temperature of the motor is calculated from the thermal conductivity in consideration of the surface area of the motor, power consumption, convection, and emissivity.

(7) Basic Characteristic Analysis of DC Motor FIG. 28 is a flowchart showing the processing of the basic characteristic analysis of the DC motor in FIG. In step S81 of FIG. 28, the motor characteristic input unit 11 in the motor operation characteristic analysis device of FIG. 1 specifies the motor to be analyzed by selecting from the motor database 50 or by directly inputting a numerical value. The characteristics of the selected motor are retrieved and input to the data storage unit 40. In step S82,
The drive voltage is specified by the drive condition input unit 12-1, and the drive voltage is stored in the data storage unit 40. In the following step S83, the arithmetic processing unit 13 performs an analytical calculation based on the information stored in the data storage unit 40. Step S84
In the process, the analysis result is processed by the result display unit 14,
For example, a graph is output from the display device 20. The graph output in the basic characteristic analysis of the DC motor is the torque-current characteristic (T-I curve) and the torque-speed (T-
N) It is a curve.

(8) DC Motor Rising Characteristic Analysis FIG. 29 is a flow chart showing the processing of the DC motor rising characteristic analysis in FIG. Step S in FIG. 29
In step S91, the motor characteristic input unit 11 in the motor operation characteristic analysis device of FIG. 1 specifies the motor to be analyzed by selecting from the motor database 50 or directly inputting a numerical value, and the characteristic of the specified motor is specified. Is retrieved and input to the data storage unit 40. In step S92, the inertia moment J, the viscosity coefficient D, and the friction torque T are input as load conditions from the load characteristic input unit 12-3 and stored in the data storage unit 40. In step S93, the drive voltage is specified in the drive voltage input unit 12-1 and the drive voltage is stored in the data storage unit 40. In the following step S94, the arithmetic processing unit 13 performs an analytical calculation based on the information stored in the data storage unit 40. Step S95
In the process, the analysis result is processed by the result display unit 14,
It is output from the display device 20. The operating characteristics of the DC motor can also be obtained by solving the motor torque equation, voltage equation, and equation of motion. In the DC motor start-up characteristic analysis, the start-up time of the motor, the steady rotation speed, the current value, and the like are obtained as calculation results. Further, although temporary load fluctuation may be a problem, the load fluctuation can be obtained by inputting the load fluctuation time and the fluctuation load in the load condition input.

As described above, the present embodiment is provided with the motor database 50 in which the characteristics of individual motors and the like are collected in advance from the catalog, and the motor characteristics input unit 11 searches for the motor to be analyzed to obtain the characteristics of the motor. The data is stored in the storage unit 40. Further, the analysis condition input unit 12 is provided to analyze the operation when the target motor is mounted, and the drive condition of the motor, the operation condition such as the control method, and the load condition are stored in the data storage unit 40, and the calculation is performed. The processing unit 13 is configured to perform analysis based on the information stored in the data storage unit 40. Therefore, the following advantages are exhibited. (I) The operator does not have to select a motor to be analyzed from a catalog or the like each time analysis is performed, and quick analysis can be performed. (Ii) Even an operator with little knowledge of motors
The analysis can be executed only by inputting the analysis conditions as parameters, and it is possible to easily confirm whether or not the selected motor operates normally when the selected motor is mounted. (iii) Since motor analysis can be performed without relying on evaluation and verification by repeating prototypes and experiments, the operating characteristics and operating margin of the motor under various conditions can be viewed. (Iv) Since the optimum operation analysis of the pulse motor can be performed, the acceleration pulse rate can be calculated at high speed without step out. The present invention is not limited to the above embodiment, and various modifications can be made. For example, in each analysis, the data storage unit 40
The order of inputting motor characteristics and analysis conditions in FIG. 9, FIG. 11, FIG. 13, FIG. 15, FIG. 26, FIG. 27, FIG. 28, FIG.
However, the analysis condition is not limited to 9, and the analysis condition can be input first.

[0023]

As described in detail above, according to the first aspect of the present invention, the motor characteristic input unit that obtains the characteristic of the motor to be analyzed from the motor database storing the motor characteristic and writes it in the data storage unit. And is configured to analyze the operating characteristics when the motor to be analyzed is mounted on a predetermined device based on the data. Therefore, the operator does not need to select the motor to be analyzed from the catalog or the like, for example. Therefore, the motor operation characteristics in the mounted state can be quickly obtained without performing trial manufacture and verification. According to the second invention, since the motor characteristic input section and the analysis condition input section of the first invention are provided, the analysis conditions can be sequentially input as parameters, and the margin or the like for the design can be calculated. It will be possible. Further, since the result display section is provided, the analysis result can be immediately displayed to the operator, and it is possible to judge the increase / decrease in the number of analyzes on the spot. According to the third invention, based on the motor characteristics and analysis conditions stored in the data storage unit, analysis of inertial load characteristics with respect to self-starting frequency of the pulse motor to be analyzed, resonance frequency analysis, one-step response analysis, continuous operation characteristics. An arithmetic processing unit for performing analysis, optimum operation analysis, or heat generation temperature analysis is provided. for that reason,
It is possible to obtain the operating characteristics when a pulse motor for information equipment, which has high market demands such as high speed, responsiveness, and positioning accuracy, is mounted in a prescribed device without repeating experiments or trial production, and improving design efficiency. Can be measured. According to the fourth aspect of the present invention, it is provided with an arithmetic processing unit that analyzes the current characteristic with respect to the torque of the DC motor and the speed characteristic with respect to the torque or the rising characteristic analysis based on the motor characteristic and the analysis condition stored in the data storage unit. There is. Therefore, it is possible to obtain the operating characteristics of a DC motor used for information equipment, which has high market demands such as high speed, responsiveness, and positioning accuracy, when it is mounted in a predetermined device without repeating experiments or trial production. Yes, design efficiency can be improved.

[Brief description of drawings]

FIG. 1 is an overall configuration block diagram of a motor operation characteristic analysis device showing an embodiment of the present invention.

FIG. 2 is a diagram showing stored information regarding a pulse motor stored in a motor database 50 shown in FIG.

3 is a diagram showing storage information regarding a DC motor stored in a motor database 50 in FIG.

FIG. 4 is a flowchart showing a process of a motor characteristic input unit in FIG.

FIG. 5 is a diagram showing search conditions for a pulse motor.

FIG. 6 is a diagram showing search conditions for a DC motor.

FIG. 7 is a diagram showing information items required for analysis of a pulse motor.

FIG. 8 is a diagram showing information items required for analysis of a DC motor.

9 is a flowchart showing a process of a self-starting frequency-inertial load characteristic analysis in FIG.

FIG. 10 is a diagram showing an output result of FIG. 9.

FIG. 11 is a flowchart showing a process of resonance frequency analysis in FIG.

FIG. 12 is a diagram showing an angle and a torque characteristic curve.

FIG. 13 is a flowchart showing a process of one-step response analysis in FIG.

FIG. 14 is a diagram showing an example of displacement output in a one-step response.

FIG. 15 is a flowchart showing a process of continuous operation characteristic analysis in FIG.

FIG. 16 is a diagram showing a normal drive input panel.

FIG. 17 is a diagram showing an input panel for self-excited oscillation constant current drive.

FIG. 18 is a diagram showing an input panel for separately excited oscillation constant current drive.

FIG. 19 is a diagram showing an overvoltage driven input panel.

FIG. 20 is a diagram showing an input panel driven by two voltages.

FIG. 21 is a diagram showing an input panel for trapezoidal control.

FIG. 22 is a diagram showing an input panel for exponential function control.

FIG. 23 is a diagram showing an input panel for directly specifying a table.

FIG. 24 is a diagram showing an example of a motor displacement graph which is an output of continuous operation analysis.

FIG. 25 is a diagram showing another example of a motor displacement graph which is an output of continuous operation analysis.

FIG. 26 is a flow chart showing a process of an optimum operation analysis in FIG.

FIG. 27 is a flowchart showing a process of heat generation temperature analysis in FIG. 1.

28 is a flowchart showing a process of basic characteristic analysis of the DC motor shown in FIG.

FIG. 29 is a flowchart showing a process of analyzing a rising characteristic of the DC motor shown in FIG. 1.

[Explanation of symbols]

 11 Motor Characteristic Input Unit 12 Analysis Condition Input Unit 13 Calculation Processing Unit 14 Result Display Unit 20 Display Device 30 Input Device 40 Data Storage Unit 50 Motor Database

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location // H02P 5/00 Z 8/00 9191-5H G06F 15/60 450 H02P 8/00 Z

Claims (4)

[Claims] 1. A motor characteristic input unit for retrieving the characteristic of an analysis target motor from a motor database in which motor characteristics of a plurality of motors are stored in advance, and writing the retrieved motor characteristic of the analysis target motor in a data storage unit. A motor operation characteristic analysis device comprising: a motor operation characteristic analysis device having a function of analyzing operation characteristics when the analysis target motor is mounted in a predetermined device based on the motor characteristics stored in the data storage unit. 2. A motor database and a motor characteristic input unit according to claim 1, an analysis condition input unit for writing conditions for performing the analysis in the data storage unit, an arithmetic processing unit for performing the analysis, A motor operation characteristic analysis device, comprising: a result display unit for displaying an analysis result on a display device. 3. A data storage unit that stores the motor characteristics of the pulse motor to be analyzed and the analysis conditions, and the data storage unit that is mounted on a predetermined device based on the motor characteristics and the analysis conditions stored in the data storage unit. An inertial load characteristic analysis with respect to the self-starting frequency of the pulse motor to be analyzed, a resonance frequency analysis, a one-step response analysis, a continuous operation characteristic analysis, an optimum operation analysis, or a heat generation temperature analysis are provided. Motor operating characteristic analysis device. 4. A data storage unit that stores the motor characteristics of the DC motor to be analyzed and the analysis conditions, and the current with respect to the torque of the DC motor to be analyzed when mounted on a predetermined device based on the motor characteristics and the analysis conditions. A motor operation characteristic analysis device, comprising: an arithmetic processing unit that analyzes speed characteristics with respect to characteristics and torque or rise characteristic analysis.