CN100542005C - Motor driver and the recorder that comprises this motor driver - Google Patents
Motor driver and the recorder that comprises this motor driver Download PDFInfo
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- CN100542005C CN100542005C CNB200510133868XA CN200510133868A CN100542005C CN 100542005 C CN100542005 C CN 100542005C CN B200510133868X A CNB200510133868X A CN B200510133868XA CN 200510133868 A CN200510133868 A CN 200510133868A CN 100542005 C CN100542005 C CN 100542005C
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Abstract
A kind of motor driver comprises: the first pulse supply, its supply are used for first pulse of micro-stepping drive motor rotor so that this motor rotor is arranged on single-phase energized position; The second pulse supply, its supply are used for micro-stepping and drive second pulse of this rotor so that this rotor is arranged on the two-phase energized position; And driving governor, it controls the first pulse supply and the second pulse supply to carry out at least one in following two: the quantity that increases first pulse that will supply in predetermined cyclic process; And the quantity of second pulse that minimizing will be supplied in predetermined cyclic process.
Description
The application divides an application, and original application is: application number: 03121670.6, and the applying date: on March 14th, 2003, denomination of invention: motor driver and the recorder that comprises this motor driver.
Technical field
The present invention relates to a kind of system and the recorder that is provided with this motor driver of drive motor.
Background technology
Usually, configuration, is recorded in information on the paper by the recording head that is installed on the roller so that sent into by feeder as recording medium and the paper that is fixed in the paper feed tray as a kind of ink-jet printer of recorder, and described roller is in the main scanning direction reciprocating motion.Carry paper a certain amount of intermittently at auxiliary scanning direction by conveyer.Dispose ink-jet printer so that feeder and conveyer are driven by the paper feeding motor, roller is driven by the roller motor, paper feeding motor and roller motor are driven by motor driver, and for example, described motor driver discloses in Japan Patent publication No.10-323090A.
Be installed in each paper feeding motor and roller motor in the ink-jet printer, stopping of each rotor is so-called two-phase energized position mutually, at described two-phase energized position, rotor is by A-phase and B-two groups of coil excitation mutually, and the resolution of each motor is determined by number of magnetic poles.That is,, require to increase the quantity of magnetic pole, yet this increase is subjected to restriction mechanically in order to strengthen the resolution of each motor.
Be installed in the motor driver on the ink-jet printer, a kind of D/A (numeral is to simulation) transducer considers that each A-is provided with to select a value VREF mutually with B-mutually, described D/A converter has four point resolutions (seeing Figure 15), and described value VREF has determined the current ratio of each phase that will be supplied.Under the constant situation of the output torque that keeps motor, select.
Particularly, the size of output torque has represented A-mutually and the resultant vector of B-each current value mutually. under motor is subjected to situation that W1-2 encourages driving mutually, change A-mutually and B-each current value mutually also conveying so that the track of resultant vector end is a circle as shown in figure 16.
Yet, when select based on the occurrence of VREF electric current select the loop so that it draws bowlder because the interval at the angle of vector motion track is not fixed in each step drives, therefore destroyed the precision of angular stop.On the other hand, when having selected circuit to select the loop, similarly destroyed the precision of angular stop so that the angular spacing of vector motion fixedly the time, is not fixed owing to the vector size.
For example, be installed on motor driver in the ink-jet printer consider independently A-mutually and B-500 and 1000mA between the electric current that will supply of variation so that the output torque of motor is fixed.That is, changing A-also carries so that the track of resultant vector end is a circle as shown in figure 16 with B-each current value mutually mutually.As previously described, the size of output torque has been represented the resultant vector of A-phase and B-each current value mutually.
Owing on the two-phase energized position, apply the magnetic attraction (putting on epitrochanterian load) that overcomes loss of machine of torque, so rotor stops on the angle shown in Figure 17 upper point.On the other hand, because magnetic attraction is little when single-phase energized position compares at the two-phase energized position, so rotor stops on the angle shown in Figure 17 lower point.Significantly, the angle that stops of rotor distributes as shown in figure 17.Angle between adjacent two-phase energized position is 7.5 degree, and extremely the angle of single-phase energized position is 3.75 degree, and described single-phase energized position is positioned at the centre of two-phase energized position.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of motor driver and the recorder that comprises this motor driver, described motor driver can increase the resolution of motor, and can increase the angle precision that rotor stops.
In order to achieve the above object, according to the present invention, provide a kind of motor driver, comprising: the first pulse supply, its supply are used for first pulse of micro-stepping drive motor rotor so that this motor rotor is arranged on single-phase energized position; The second pulse supply, its supply are used for micro-stepping and drive second pulse of this rotor so that this rotor is arranged on the two-phase energized position; And driving governor, it controls the first pulse supply and the second pulse supply to carry out at least one in following two: the quantity that increases first pulse that will supply in predetermined cyclic process; And the quantity of second pulse that minimizing will be supplied in predetermined cyclic process.
With respect to prior art, the present invention adopts such structure, can be in the first phase energized position and the second energized position direction of proofreading and correct resultant vector mutually.
In order to achieve the above object,, also provide a kind of motor driver, comprising according to the present invention:
First current supply, its first electric current is supplied to first phase coil of motor;
Second current supply, its second electric current is supplied to second phase coil of described motor; With
The electric current selector, it selects first current value and second current value, so that one of the following remains unchanged at least:
Each micro-stepping at motor drove in the step, the resultant vector size that is obtained by the first electric current selective value and the second electric current selective value; With
The adjacent micro-stepping of corresponding motor drives the angle intervals between the resultant vector that goes on foot.
With respect to prior art, the present invention adopts such structure, can make the angular stop of rotor accurately increase the step resolution of motor simultaneously.
According to the present invention, a kind of motor driver also is provided, comprising:
First current supply, its first electric current is supplied to first phase coil of motor;
Second current supply, its second electric current is supplied to second phase coil of described motor; With
The electric current selector, at least one item below it is carried out:
Increase in first electric current of single-phase excitation and second electric current one to change the magnetic balance that first electric current or second electric current are obtained; And
Reduce first electric current of two-phase excitation and second electric current to change the magnetic balance that first electric current and second electric current are obtained.
With respect to prior art, the present invention adopts such structure, is positioned at single-phase energized position even work as rotor, also can encourage the magnetic attraction that overcomes loss of machine of torque.
In addition, can be equilibrated at the magnetic attraction of single-phase energized position and two-phase energized position.
According to the present invention, a kind of motor driver also is provided, comprising:
Pulse supply, its supply are used for the pulse of micro-stepping driving at the motor rotor of single-phase energized position; With
Driving governor, its control impuls supply is with the first quantity pulse of supply along the first direction drive motor, supply the second quantity pulse of the edge second direction drive motor relative, and supply the 3rd quantity pulse again along the first direction drive motor with first direction.
With respect to prior art, the present invention adopts such structure, moves the direction of the resultant vector of proofreading and correct the first phase energized position by damping.
According to the present invention, above-mentioned motor driver is fit to pack in the tape deck, this tape deck comprises first motor that can operate moving recording head support mounted thereto and can operate second motor of carrying the recording medium that recording head thereon writes down; And motor driver is fit to drive first motor and second motor.
Description of drawings
Describe preferred embodiment in detail with reference to accompanying drawing, above-mentioned purpose of the present invention and advantage will be called more tangible, wherein:
Fig. 1 is the front perspective view of the whole external structure of explanation ink-jet printer;
Fig. 2 is the whole in-built front perspective view of explanation ink-jet printer when removing upper case;
Fig. 3 is the sectional view of the critical component of explanation ink-jet printer;
Fig. 4 is the block diagram of explanation according to the motor driver of first embodiment of the present invention;
Fig. 5 A to 5C be the explanation motor A-mutually and the table of the instantiation of B-current value mutually;
Fig. 6 has illustrated that the A-shown in Fig. 5 A to 5C mutually and the relation between the current value of B-phase;
Fig. 7 has illustrated the angular stop of each situation lower rotor part shown in Fig. 5 A to 5C;
Fig. 8 is the block diagram that has illustrated according to the motor driver of second embodiment of the present invention;
Fig. 9 has illustrated in the motor driver of Fig. 8 that A-mutually and the relation between the current value of B-phase;
The rotor angular stop that Figure 10 and 11 explanations are realized by the motor driver among Fig. 8;
Figure 12 be explanation before implementing and afterwards according to correction of the present invention, the change in torque curves in 64 steps of driving;
Figure 13 be explanation before implementing and afterwards according to correction of the present invention, the current ratio curves in 64 steps of driving;
Figure 14 is the part enlarged drawing of Figure 13;
Figure 15 has illustrated the set of the D/A converter of the motor driver relevant with technology;
Figure 16 illustrated in the motor of correlation technique A-mutually and the relation between the current value of B-phase;
Figure 17 has illustrated the precision of angular stop of the motor rotor of correlation technique.
Embodiment
Hereinafter will describe the preferred embodiments of the invention in detail with reference to accompanying drawing.
As shown in Figure 1, ink-jet printer 100 comprises upper case 101 and lower case 102, and described ink-jet printer is a kind of of recorder.Upper case 101 and lower case 102 are connected to each other by clamping.
At the rear side of upper case 101, make paper feeding port one 03.In paper feeding port one 03, connect paper feed tray 110, the quires that supply is placed on the described paper feed tray 110.Connect paper feed tray 110 so that it is outstanding to the top rear side diagonally, and keep paper under the state that tilts.
In the front side of upper case 101, make paper delivery port one 04.Front side at upper case 101 and lower case 102 is provided with output stacker 120, and the quires of output is placed on the described output stacker 120.Output stacker 120 is connected to the front side of paper delivery port one 04.When without output stacker 120, it is collected in the inside (state shown in Figure 1) of paper delivery port one 04.When using output stacker 120, it is hauled out and is parked in from lower case 102 from paper delivery port one 04 and projects to diagonally on the position of front side, top to accept paper under heeling condition.Output stacker 120 is provided with fixture 121, and it supports the back end of output paper.
Make window 105 from top to its front surface of upper case 101.Window 105 is covered by transparent or semitransparent openable lid 106.Cover 106 by opening, can carry out easily that ink cylinder more changes jobs and the maintenance work of internal mechanism.And button-type power switch 131 and console switch 132,133 are located at the left rear side of upper case 101.
As shown in Figure 2, in lower case 102, the control board 130 of forming printer controller is placed vertically, and forms recording section 140, feeder 150 and the conveyer 160 of printing mechanism and installs as shown in Figure 3.
Control element and memory cell (for example CPU, ROM, RAM, ASIC do not show), other multiple loop element is installed on the control board 130.In the upper end of control board 130, Light- Emitting Diode 133 and 134 is placed highlightedly, and when power switch 131 or console switch 132,133 closed, described diode 133 and 134 was luminous, and the user can confirm that switch is in out state like this.
Fig. 4 has illustrated the motor driver 180 according to first embodiment driving arm motor 143 of the present invention and paper feeding motor 165.Motor driver 180 comprises D/A converter, and described D/A converter is selected predetermined current based on the reference voltage VREF3 from the external equipment input.Motor driver 180 is installed on the control board 130.
Fig. 5 A has illustrated and has only made selected current value when the size of each little activation point resultant vector keeps constant.Fig. 5 B has illustrated and has only made selected current value when each little activation point resultant vector motion angle keeps constant at interval.Fig. 5 C has illustrated and has made selected current value when the size of each little activation point resultant vector and angle intervals all keep constant.The value of VREF3 shown in Fig. 5 C and Fig. 5 A and 5B are common.
As shown in Figure 6, the situation with according to Fig. 5 A or 5B selective value the time relatively, vector locus becomes complete circle during according to Fig. 5 C selective value, the vector locus of corresponding figures 5B is preferred than the vector locus of corresponding figures 5A.
As shown in Figure 7, the situation with according to Fig. 5 A or 5B selective value the time relatively, during according to Fig. 5 C selective value, the rotor stop position in the two-phase position becomes more accurate.The stop position of corresponding figures 5B is more accurate than the stop position of corresponding figures 5A.Particularly, according to Fig. 5 A, 5B during with the 5C selective value error of relative stop position be respectively 30%, 15% and 7.5%.
According to above-mentioned structure, can make the angular stop of rotor accurately strengthen the step resolution of motor simultaneously.The structure motor driver 180 so that the size of resultant vector and angular spacing any all keep constant.Can adopt motor driver 180 to control bipolar motor and unipolar motor.
Fig. 8 illustrates according to second embodiment of the present invention, the motor driver 170 of driving arm motor 143 and paper feeding motor 165.Construct motor driver 170 so that reference voltage VREF1 or reference voltage VREF2 that each electric current selector 171 is imported based on each external equipment select the predetermined current value, and make each control logic loop 172 pass through each transistor 173 output signal according to the electric current of selecting.Motor driver 170 also comprises Re Guan loop circuit 174, serial transducer 175 and single the triggering many blanking times 176.Motor driver 170 is installed on the control board 130.
The motor driver 170 of such structure changes magnetic balance by the input current that increases single-phase excitation still can produce the magnetic attraction (being applied to epitrochanterian load) that overcomes loss of machine of torque so that rotor is in single-phase energized position even have.Particularly, the current value of magnetic balance by increasing the B-phase between two-phase energized position (position of first quartile 45 degree among Fig. 9) and the single-phase energized position (among Fig. 9 on the axle of B-phase) be to 1.4 times of maximums, and the current value that increases the A-phase between two-phase energized position (position of four-quadrant among Fig. 9-45 degree) and the single-phase energized position (among Fig. 9 A-phase spool on) simultaneously changes to 1.4 times of maximums.
Therefore, as shown in figure 10, when the input current of single-phase excitation increases to 600mA, 850mA, 1000mA and 1200mA, can strengthen the precision of the angular stop of single-phase energized position between the adjacent two-phase energized position.Particularly, when the input current of each single-phase excitation is 600mA, 850mA, 1000mA and 1200mA, each angular stop is respectively 2.15 degree, 3 degree, 3.25 degree and 3.3 degree, and each precision of spending with respect to reference value 3.75 is 43%, 20%, 13% and 12%, has increased precision.
As above-mentioned, also can carry out owing to overcome the magnetic attraction of loss of machine of torque, so the rotor angular stop can be the accurate step resolution that also increases motor simultaneously at single-phase energized position.Can construct motor driver 170 so that magnetic balance changes by the input current that reduces the two-phase excitation, make magnetic attraction balance at the magnetic attraction and the two-phase energized position of single-phase energized position.Also can construct motor driver 170 so that magnetic balance changes by the input current that the input current that increases single-phase excitation reduces the two-phase excitation simultaneously, make in the magnetic attraction of single-phase energized position and the magnetic attraction balance of two-phase position.Can adopt motor driver 170 to control bipolar motor and unipolar motor.
Can construct motor driver 170 so that the direction of the resultant vector of A-phase current values of putting in single-phase excitation and B-phase current values is proofreaied and correct by the driving pulse quantity that increases single-phase excitation.Particularly, as shown in figure 11,, improve with respect to the angular stop precision of reference value (3.75) when the driving pulse quantity of single-phase excitation when 8 increase to 9 (the driving pulse quantity of two-phase excitation simultaneously is reduced to 7 from 8).When the driving pulse quantity of single-phase excitation when 8 increase to 10 because precision worsens, therefore should correctly select the number of pulses that increases.
Because therefore the direction that can proofread and correct the resultant vector of single-phase energized position can make the rotor angular stop accurately increase the step resolution of motor simultaneously.
Can construct motor 170 so that the direction of the resultant vector of single-phase energized position by rotate forward predetermined quantity (for example, 2) single-phase driving pulse, the opposite spin predetermined quantity (for example, 3) pulse, with the damping operation of (for example, 2) pulse of normal rotation predetermined quantity and proofread and correct.Can adopt motor driver 170 to control bipolar motor and unipolar motor.
Below, with reference to Figure 12 to 14, illustrate with above-mentioned embodiment and control the positive method of step position, angle recalibration by the exciting current of control excitation phase.
At first, whether satisfactory in order to check the step angle, detect the variation of moment of torsion, when the step, the angle was big, output torque reduced; When step angle hour, output torque increases.That is, proofread and correct the deviation of each micro-stepping activation point desired value as shown in figure 12.Former value is proofreaied and correct in the dotted line representative, and later value is proofreaied and correct in the solid line representative.
Secondly, in output torque under the single-phase excitation situation of A-phase and output torque balance under B-single-phase excitation situation mutually.Particularly, A-mutually is corrected into the value of solid line representative with B-current value mutually from the value of dotted line representative, shown in Figure 13 and 14.At last, confirm that more whether the output torque of each micro-stepping activation point keeps constant in essence.
Though in above-mentioned multiple embodiments the present invention has been described, the present invention is not limited in the above-mentioned embodiment, but also can be applied to other embodiment within the scope of the invention.For example, though the example of ink-jet printer as recorder illustrated that the present invention is limited to here, but can be applied to have other recorder of paper roller, for example, hot transmission type printer and inkjet type or hot transmission type facsimile machine or photocopier.
Claims (1)
1. motor driver comprises:
The first pulse supply, its supply are used for first pulse of micro-stepping drive motor rotor so that this motor rotor is arranged on single-phase energized position;
The second pulse supply, its supply are used for micro-stepping and drive second pulse of this rotor so that this rotor is arranged on the two-phase energized position; With
Driving governor, described driving governor are controlled the first pulse supply and the second pulse supply to carry out at least one in following two:
In predetermined cyclic process, increase the quantity of first pulse that will supply; And
In predetermined cyclic process, reduce the quantity of second pulse that will supply; Wherein
This motor driver is fit to pack in the tape deck, and this tape deck comprises first motor that can operate traversing carriage, and wherein recording head is installed on the described support; With second motor that can operate conveying recording medium, wherein recording head is at the enterprising line item of described recording medium; And
Motor driver is fit to drive first motor and second motor as described motor.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002069557 | 2002-03-14 | ||
| JP2002069556 | 2002-03-14 | ||
| JP2002069556 | 2002-03-14 | ||
| JP2002160243 | 2002-05-31 | ||
| JP2003055999 | 2003-03-03 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN03121670.6A Division CN1463074B (en) | 2002-03-14 | 2003-03-14 | Motor driver and registering instrument including same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1825749A CN1825749A (en) | 2006-08-30 |
| CN100542005C true CN100542005C (en) | 2009-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510133868XA Expired - Fee Related CN100542005C (en) | 2002-03-14 | 2003-03-14 | Motor driver and the recorder that comprises this motor driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100542005C (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4906910A (en) * | 1987-10-08 | 1990-03-06 | Oki Electric Industry Co., Ltd. | Drive circuit for a stepping motor control device |
| US5982134A (en) * | 1997-05-20 | 1999-11-09 | Seiko Epson Corporation | Method and apparatus for driving a stepping motor |
-
2003
- 2003-03-14 CN CNB200510133868XA patent/CN100542005C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4906910A (en) * | 1987-10-08 | 1990-03-06 | Oki Electric Industry Co., Ltd. | Drive circuit for a stepping motor control device |
| US5982134A (en) * | 1997-05-20 | 1999-11-09 | Seiko Epson Corporation | Method and apparatus for driving a stepping motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1825749A (en) | 2006-08-30 |
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Granted publication date: 20090916 Termination date: 20120314 |