CN113541541A - Control method and control system for image forming apparatus - Google Patents
Control method and control system for image forming apparatus Download PDFInfo
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- CN113541541A CN113541541A CN202010321067.0A CN202010321067A CN113541541A CN 113541541 A CN113541541 A CN 113541541A CN 202010321067 A CN202010321067 A CN 202010321067A CN 113541541 A CN113541541 A CN 113541541A
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 239000002699 waste material Substances 0.000 description 13
- 230000002159 abnormal effect Effects 0.000 description 7
- 239000002131 composite material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P8/00—Arrangements for controlling dynamo-electric motors rotating step by step
- H02P8/12—Control or stabilisation of current
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P8/00—Arrangements for controlling dynamo-electric motors rotating step by step
- H02P8/34—Monitoring operation
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- Power Engineering (AREA)
- Control Or Security For Electrophotography (AREA)
- Control Of Stepping Motors (AREA)
Abstract
The invention provides a control method of an image forming apparatus and a control system of the image forming apparatus, which can control the driving current applied to a stepping motor and realize energy saving. The method for controlling the image forming apparatus includes the steps of: a detection step, detecting the parameter value of the stepping motor in the working state; a determination step of comparing the parameter value detected in the detection step with a threshold value corresponding to the parameter value stored in advance in a storage unit, and determining whether or not the stepping motor is in a normal operating state; and a control step of controlling the drive current by the control unit so that the stepping motor is in a normal operation state when it is determined in the determination step that the stepping motor is not in a normal operation state.
Description
Technical Field
The present invention relates to a control method and a control system for an image forming apparatus, and more particularly, to a control method and a control system for an image forming apparatus, which can achieve power saving.
Background
In a composite printer, for example, there is a case where torque output from a motor is insufficient and the motor is out of adjustment. In such a case, a larger current than usual needs to be applied to the motor to overcome the detuning, thereby ensuring that the motor can operate normally.
In contrast, in a conventional composite printer, for example, a drive current larger than that in a normal operation is generally set for a stepping motor in the composite printer. Therefore, the problem that the motor is out of regulation due to insufficient torque output by the motor is solved.
However, in the composite printer as described above, since the motor is always driven with a current larger than that in the normal operation of the motor, a current larger than a necessary current is used for a long time, which causes a waste of energy and is disadvantageous in energy saving. Moreover, the use of a large current may cause the temperature of the device to rise too fast, which is detrimental to the service life of the device.
Disclosure of Invention
The present invention has been made in view of the above circumstances, and an object thereof is to provide a control method and a control system for an image forming apparatus, which can achieve energy saving.
In order to achieve the above object, a method for controlling an image forming apparatus according to the present invention is a method for controlling a drive current applied to a stepping motor, the method comprising: a detection step, detecting the parameter value of the stepping motor in the working state; a determination step of comparing the parameter value detected in the detection step with a threshold value corresponding to the parameter value stored in advance in a storage unit, and determining whether or not the stepping motor is in a normal operating state; and a control step of changing the drive current so that the stepping motor is in a normal operation state by a control unit when it is determined in the determination step that the stepping motor is not in a normal operation state.
According to the control method of the image forming apparatus, when it is determined that the stepping motor is not in the normal operation state, the control unit controls the drive current so that the stepping motor is in the normal operation state. Therefore, abnormal states (such as off-adjustment) of the stepping motor can be timely dealt with, and normal operation of the device is ensured. Further, since the drive current is changed only when it is determined that the stepping motor is not in the normal operation state, it is possible to maintain the state in which the stepping motor is not turned off without setting the drive current to a large current as in the conventional case. Therefore, the device can save energy, is not easy to heat too fast, and is beneficial to the service life of the device.
In the method for controlling an image forming apparatus according to the present invention, the step of detecting may detect a vibration amount of the stepping motor as a parameter value, and when the step of determining determines that the detected vibration amount is larger than the vibration amount stored in advance in the storage unit as the threshold value, the step of determining may determine that the stepping motor is not in a normal operation state, and the step of controlling may apply a driving current larger than the driving current in a state where the stepping motor is normally operated to the stepping motor by the control unit.
According to the control method described above, the amount of vibration of the stepping motor is detected as a parameter value. Since the stepping motor generally vibrates when the stepping motor is disengaged, the state of the stepping motor can be accurately grasped by detecting the vibration amount of the stepping motor. When the vibration amount is larger than the threshold value, a current larger than that in the normal operation is applied to the stepping motor to overcome the shortage of the torque, so that the stepping motor is in the normal operation state. As described above, a large current can be applied to the stepping motor only when the torque generated by the stepping motor is insufficient, so that waste of power resources can be suppressed, the device can be made energy-saving, and the device is less likely to generate heat too quickly, which is advantageous for the service life of the device.
In the control method of the image forming apparatus of the present invention, the drive current in a normal operation state of the stepping motor is set so that an output torque of the stepping motor is equal to a load on a sheet passage.
According to the control method, the driving current in the normal working state of the stepping motor can be the required minimum current. Therefore, the waste of power resources can be further suppressed, and the energy of the device can be saved.
In the method of controlling an image forming apparatus according to the present invention, the control section does not change the drive current when the vibration amount is equal to or less than the threshold value + 10%.
According to the control method described above, the threshold value can be set according to the amount of vibration in the normal operating state of the stepping motor. When the vibration amount of the stepping motor is equal to or less than the threshold value + 10%, although the vibration amount in the normal operation state may be exceeded, the vibration amount in the normal operation state is not constant, and there is a case where some vibration is caused by other factors. Thus, the operating state of the stepping motor can be more accurately determined, and the driving current can be reasonably controlled, so that the waste of power resources is suppressed, and the energy of the device is saved.
In the method of controlling an image forming apparatus according to the present invention, the control section does not change the drive current when the vibration amount exceeds the threshold + 20%.
According to the above control method, when the vibration amount exceeds the threshold ± 20%, although it is determined that the stepping motor is not in the normal operation state, such a large vibration amount is considered to be highly likely to be caused by the outside. Therefore, in such a case, the drive current is not increased at all. In this way, it can be accurately determined whether the stepping motor is vibrating due to a problem of off-regulation, and therefore, the driving current can be appropriately controlled, thereby suppressing waste of power resources and saving energy of the apparatus.
In the method of controlling an image forming apparatus according to the present invention, the control unit divides the drive current into a plurality of stages and controls the drive current so as to change the drive current stage by stage.
According to the control method, the drive current can be increased in stages, so that the application of an excessive drive current to the stepping motor can be avoided, and the drive current can be appropriately changed according to the operating state of the stepping motor. Therefore, the waste of power resources can be further suppressed, and the energy of the device can be saved. And can also avoid step motor or device because of the too big damage of electric current, guarantee device life.
In the method of controlling an image forming apparatus according to the present invention, after the control section changes the drive current, the drive current is decreased by one step at a predetermined time until the drive current in the normal operation state of the stepping motor is reached.
According to the control method, when the stepping motor is determined not to be in the normal working state and the off-regulation is generated, the stepping motor ensures the output torque so as to overcome the off-regulation after the output torque is increased by applying a larger driving current to the stepping motor. Then, the drive current is decreased by one step at a constant time interval, so that the drive current can be restored to the current in the normal operation state after overcoming the shortage of the output torque without maintaining the increased drive current, thereby avoiding the waste of power resources and saving the energy of the device. And, make the drive current drop by stage, prevent the drive current from changing too much, thus is favorable to the life of the apparatus.
In the method of controlling an image forming apparatus of the present invention, the stepping motor is a stepping motor on a sheet passage of the image forming apparatus.
The problem of insufficient output torque occurs most easily due to the stepping motor located on the paper path. Therefore, the problem of insufficient output torque can be effectively solved by taking the stepping motor on the paper passing path as a control object, and the control method is simple and easy to realize.
In the control method of the image forming apparatus of the present invention, the vibration amount is a vibration amount in a plurality of directions when the stepping motor vibrates.
The vibration quantity in a plurality of directions is detected when the stepping motor vibrates, the working state of the stepping motor can be more accurately grasped, and the driving current can be more accurately and reasonably controlled, so that the waste of power resources is further effectively inhibited.
Further, the control system of the image forming apparatus of the present invention can also obtain the above-described technical effects by the arrangement of the respective portions.
According to the above aspects, a control method and a control system for an image forming apparatus capable of saving energy can be provided.
Drawings
Fig. 1 shows graphs of the amount of vibration of a stepping motor in different states.
Fig. 2 is a main part of a circuit diagram showing an example of controlling the drive current.
Fig. 3 is a flowchart showing a method of controlling the image forming apparatus according to the present invention.
Detailed Description
Hereinafter, a method of controlling an image forming apparatus according to the present invention will be described in detail with reference to the drawings.
In an image forming apparatus, a sheet is conveyed through a fixed path, and an image is fixed to the sheet by, for example, a fixing section, and then the sheet on which the image is printed is output to the outside of the apparatus for use, reading, and the like by a user. Paper is generally conveyed by a member such as a roller, and a stepping motor is generally used to drive the roller. Under the normal working state of the device, the stepping motor is enabled to work through a certain driving current to drive the roller part. However, the output torque is often insufficient due to various reasons, so that the stepping motor is not adjusted, and the roller cannot be effectively driven. The present invention can control the driving current applied to the stepping motor under such a condition, and adjust the driving current to ensure a sufficiently large torque output, thereby preventing the stepping motor from being in a state of off-regulation and operating normally.
Specifically, the method of controlling the image forming apparatus according to the present invention can be implemented as follows. The method for controlling an image forming apparatus according to the present invention includes at least a detection step, a determination step, and a control step. First, in the detection step, a parameter value in an operating state of the stepping motor is detected. Here, the vibration amount of the stepping motor is set as the parameter to be measured, and since vibration is generally generated when the stepping motor is turned off, the state of the stepping motor can be grasped more accurately by detecting the vibration amount of the stepping motor. However, the measurement parameter is not limited to the vibration amount of the stepping motor, and for example, the rotational frequency of the stepping motor may be detected as a parameter value. That is, the parameters of the stepping motor that change during normal operation compared to off-set can be used as the measured parameter values.
Next, in the determination step, the parameter value detected in the detection step is compared with a threshold value corresponding to the parameter value stored in advance in a storage unit, and it is determined whether or not the stepping motor is in a normal operating state.
Specifically, in the present embodiment, the amount of vibration of the stepping motor in a state in which the image forming apparatus having the stepping motor mounted thereon is normally operated, that is, in a state in which the stepping motor is normally operated, is measured in advance and stored in the storage unit. The storage unit is constituted by a storage medium capable of recording data. The storage medium may store a program that can be read by the control unit and used to control the stepping motor and the drive current thereof.
The vibration amount of the stepping motor in the current working state is detected by a vibration sensor, and is converted into an electric signal to be input to the judging part. The determination unit is constituted by, for example, a microcomputer, and compares the input signal from the vibration sensor with the vibration amount in the normal operation state of the stepping motor stored in advance in the storage unit, where the vibration amount in the normal operation state of the stepping motor is defined as a and is set as a threshold. By comparing the vibration amount detected by the vibration sensor with the threshold a, it can be determined that the stepping motor is in a normal operating state when the detected vibration amount is equal to or less than the threshold a, and it is determined that the stepping motor is not in a normal operating state, that is, is in an abnormal operating state when the detected vibration amount exceeds the threshold.
In the control step, when it is determined in the determination step that the operating state in which the stepping motor is not in the normal state is the abnormal operating state, the control unit changes the drive current so that the stepping motor is in the normal operating state.
Specifically, in the present embodiment, the control unit controls the magnitude of the drive current input to the stepping motor. Since the control unit is constituted by a microcomputer, for example, in the present embodiment, the determination unit and the control unit may be constituted by a microcomputer, and the functions of the determination unit and the control unit are realized by hardware, software, or a combination of hardware and software of the microcomputer. In a usual case, a drive current is input to the stepping motor to drive the stepping motor so that it rotates the roller. Here, the drive current in the normal operation state of the stepping motor is set so that the output torque of the stepping motor is equal to the load on the paper path. Thus, the driving current in the normal operation state of the stepping motor can be set to the required minimum current, thereby restraining the extra consumption of the electric power resource of the device and saving the energy of the device.
When the determination unit determines that the stepping motor is in a normal operation state, the control unit does not change the drive current for driving the stepping motor. When the determination unit determines that the stepping motor is not operating normally, that is, in a state of operating abnormally, the control unit controls the drive current for driving the stepping motor so that the drive current, that is, a current larger than the current during normal operation (the required minimum current) is applied to the stepping motor to overcome the problem of insufficient output torque of the stepping motor, thereby making the stepping motor operate normally again and avoiding the occurrence of a problem of overshoot.
In this way, through the series of operations, when the vibration amount of the stepping motor is detected to be large and the stepping motor is judged to be in the abnormal working state, the driving current is immediately controlled to prevent the stepping motor from being out of regulation, so that the abnormal working state of the stepping motor can be timely responded, and the normal operation of the device is ensured. Further, since the drive current is increased only when it is determined that the stepping motor is in an abnormal operating state, the state in which the stepping motor is not turned off can be maintained without always setting the drive current to a large current as in the conventional case. In the present embodiment, the vibration amount of the stepping motor is detected as a parameter value. Since the stepping motor generally vibrates when it is released, the state of the stepping motor can be accurately grasped by detecting the vibration amount of the stepping motor.
Here, in the control step, the control unit may not increase the driving current when the detected vibration amount is equal to or less than the threshold a + 10% in consideration of the fact that the vibration amount of the stepping motor in the normal operation state is not a constant amount and that some vibration is caused by other factors.
In the above case, even if the vibration amount of the stepping motor exceeds the threshold a, the stepping motor can satisfy the torque output even in such a case, and does not impose an excessive burden on the stepping motor, and therefore, it is not necessary to apply a larger current to the stepping motor. Therefore, the working state of the stepping motor can be more accurately judged, and the driving current can be reasonably controlled, so that the waste of power resources is inhibited, and the energy of the device is saved.
Further, in the method of controlling an image forming apparatus of the present invention, the control section does not change the drive current when the vibration amount exceeds the threshold + 20%.
As described above, there are many factors causing the vibration of the stepping motor, and in the case where the vibration amount of the stepping motor exceeds the threshold value a ± 20%, it is highly possible to consider that such a large vibration amount is caused by the vibration of the outside. Therefore, in such a case, although it is determined that the stepping motor is not in a normal operation state, the drive current is not increased any more. Since the vibration generated from the outside cannot be overcome even if the driving current is increased to normally operate the stepping motor. In such a case, for example, the notification device may not operate normally when receiving external vibration, such as displaying or outputting sound to the user.
When the vibration amount of the stepping motor is detected to exceed the threshold value a ± 20%, the vibration of the stepping motor is considered to be caused by external vibration, and the control unit does not change the drive current. Therefore, by such control, it is possible to accurately determine whether or not the stepping motor is vibrating due to a problem of overshoot, and to appropriately control the drive current, thereby suppressing an unnecessary increase in the drive current, avoiding waste of power resources, and saving energy of the apparatus.
Fig. 1 shows the above-described respective states of the stepping motor. As shown in fig. 1, the detection of the amount of vibration of the stepping motor is based on the detection of the amplitude of the stepping motor by the vibration sensor, and the horizontal axis represents time, the vertical axis represents the amplitude of the stepping motor, and the vertical axis represents the positive or negative part of the amplitude, and the positive or negative part represents the difference only in the amplitude direction, and the part represents the value of the amplitude. And the vibration amount can be regarded as an absolute value of the amplitude (amplitude in any direction). When the amplitude of the stepping motor is less than or equal to A (threshold value) ± 10%, the vibration of the stepping motor is considered to be the vibration generated during normal operation, and therefore the stepping motor is considered to be in a normal operation state. And when the amplitude of the stepping motor detected by the vibration sensor meets the condition that A +/-20 percent is more than or equal to amplitude which is more than A +/-10 percent, the danger of the off-regulation is judged. At this time, the control unit applies a larger driving current to the stepping motor to prevent the stepping motor from being detuned due to insufficient output torque. On the other hand, if the amplitude of the stepping motor is greater than a ± 20%, the control unit continues to detect the vibration without increasing the drive current because it is considered that the vibration of the stepping motor is highly likely to be caused by the external vibration.
Here, the amplitude of the vibration of the stepping motor can be measured in three directions of X (front-back) direction, Y (left-right) direction, and Z (up-down) direction. The directions X, Y, Z respectively indicate the front-back, left-right, and up-down directions in a state where the device can be used. And when the amplitudes in the three directions all meet the amplitude of less than or equal to A (threshold value) ± 10%, the stepping motor is considered to be in a normal working state, when the amplitude of any direction meets the condition that A +/-20% ≧ amplitude > A +/-10%, the danger of off-regulation is judged, and when the amplitude of any direction is greater than A +/-20%, the vibration given by the outside is considered to be the vibration, and the amplitude is continuously detected.
By detecting the amplitudes (vibration amounts) in a plurality of directions (three directions in the present embodiment) when the stepping motor vibrates as described above, the operating state of the stepping motor can be grasped more accurately, and the drive current can be controlled more accurately and reasonably, thereby further effectively suppressing the waste of power resources.
In the present embodiment, when increasing the drive current, the control unit may control the drive current so that the drive current is changed in stages.
Fig. 2 shows a main part of a circuit diagram of an example of controlling the drive current. As shown in fig. 2, a CPU of the control unit (microcomputer) is connected with, for example, 3 stages (levels) of circuit paths. The control unit receives vibration values detected by the three-directional vibration sensor X, Y, Z, for example, and when it is determined that the drive current needs to be increased, the control unit controls the drive current so as to change the drive current stage by stage.
Specifically, first, the CPU of the control unit supplies power to the drive chip P of the stepping motor via the current path TR1, and increases the drive current of one stage, that is, the secondary drive current. And the current in the normal operation state is set as the primary current. Then, the vibration sensor measures the vibration amount of the stepping motor again, and if the vibration amount of the stepping motor is within the range of the threshold value a + 10%, the CPU determines that the stepping motor has recovered to the normal operating state, and does not increase the driving current any more. And when the vibration sensor measures the vibration quantity of the stepping motor again and the vibration quantity is still A + 20% or more and the vibration quantity is more than A + 10%, the CPU further changes to a TR2 current path, and increases the driving current of one stage on the basis of increasing the driving current of one stage (secondary driving current), namely, the driving current of three stages. Similarly, if it is determined that the drive current needs to be increased again after the drive currents of the two stages are increased, the CPU further changes the current path to TR3, and increases the drive current of one stage after the drive currents of the two stages (three-stage drive current) are increased, that is, the drive current of four stages.
Here, the drive current can be changed by providing the resistors R1 to R4 in the respective drive current paths TR1 to TR 3. Also, the drive current of each stage may be increased by the same amount, e.g., 20%, as compared to the drive current of the previous stage. That is, the secondary driving current is 1.2 times of the primary driving current, which is the driving current during normal operation, the tertiary driving current is 1.4 times of the primary driving current, and the quaternary driving current is 1.6 times of the primary driving current.
In this way, by increasing the drive current in stages, it is possible to avoid a sudden change in the drive current applied to the stepping motor, and it is possible to protect the drive chip of the stepping motor from being damaged by an overexcited current change, and it is possible to appropriately change the drive current according to the operating state of the stepping motor. Further, by increasing the drive current step by step, it is possible to further suppress waste of power resources and save energy of the device. Further, by increasing the drive current by the same amount for each stage, the circuit TR1-TR3 and the resistors R1-R4 can be easily provided.
Fig. 3 shows a flowchart of a control method of an image forming apparatus of the present invention. As shown in fig. 3, first, the vibration sensor detects the vibration of the stepping motor, i.e., the amplitude (step S1). Then, the amplitude detected by the vibration sensor is transmitted to the CPU of the microcomputer, and compared with a threshold value of vibration stored in advance in the storage medium (step S2). The judgment unit first compares the detected amplitude with a threshold value a ± 20% (step S3), and when the amplitude is larger than a ± 20% (no in S3), the judgment unit returns to step S1 to continue detecting the amplitude in the case where the vibration is considered to be vibration given from the outside, and when the amplitude is equal to or smaller than a ± 20% (yes in S3), the judgment unit further judges whether or not the amplitude is equal to or smaller than a ± 10% (step S4). If the amplitude is equal to or smaller than a ± 10% (yes at S4), the stepping motor is determined to be in a normal operating state, and the process returns to step S1 to continue detecting the amplitude. When the amplitude is larger than a ± 10% (no in S4), the control unit controls the drive current to increase the current by one step, for example, by raising the primary current to the secondary current, and so on, the drive current is raised step by step.
In addition to the above-described control of the drive current, the drive current may be decreased in a stepwise manner at a constant time interval after the drive current is increased by the control unit until the drive current in the normal operation state of the stepping motor is obtained.
Specifically, as described above, when it is determined that the stepping motor is in the abnormal operation state and the control unit increases the drive current step by step to return the stepping motor to the normal operation state, the detection unit continues to detect the vibration of the stepping motor. When the vibration amount detected by the detection unit is within a range of less than the threshold value a + 10% and continues for a predetermined time, the stepping motor is considered to have overcome the shortage of the output torque. In consideration of the fact that the output torque of the stepping motor is insufficient, which is generally temporary, the control unit lowers the drive current step by step when the drive current is raised to cause the stepping motor to be in a normal operation state and maintained for a certain period of time.
For example, after the control unit raises the drive current to the four-stage drive current and brings the stepping motor into the normal operation state, the control unit lowers the four-stage drive current by one stage and brings the drive current into the three-stage drive current after the stepping motor maintains the normal operation state for a certain period of time, for example, several minutes or ten and several minutes. At this time, the detection part still detects the vibration quantity of the stepping motor, and when the vibration of the stepping motor is not further increased and the stepping motor continues to maintain the normal working state for a certain time, the control part reduces the three-stage driving current by one stage, so that the driving current is the two-stage driving current. And so on until the drive current is reduced to a primary drive current. During this period, when it is determined that the increase in the vibration amount of the stepping motor is detected again and it is necessary to increase the current in one stage, the control unit increases the drive current in one stage.
According to the control method, the control method of the present invention repeats the raising and lowering of the drive current, so that the drive current can be optimized, thereby avoiding waste of power resources and saving energy of the device. And, the drive current is lowered section by section, preventing the drive current from changing sharply, thereby contributing to the service life of the device.
The stepping motor to be controlled is, for example, a stepping motor on a paper path of the image forming apparatus. The problem of insufficient output torque occurs most easily due to the stepping motor located on the paper path. Therefore, the problem of insufficient output torque can be effectively solved by taking the stepping motor on the paper passing path as a control object, and the control method is simple and easy to realize.
The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and can be realized by various configurations without departing from the scope of the invention. For example, the technical features of the embodiments described in the summary of the invention can be replaced or combined as appropriate. In addition, portions that are not described as essential technical features in the present specification can be appropriately deleted.
Claims (10)
1. A control method of an image forming apparatus controls a drive current applied to a stepping motor,
the method for controlling the image forming apparatus includes the steps of:
a detection step, detecting the parameter value of the stepping motor in the working state;
a determination step of comparing the parameter value detected in the detection step with a threshold value corresponding to the parameter value stored in advance in a storage unit, and determining whether or not the stepping motor is in a normal operating state;
and a control step of controlling the drive current by a control unit so that the stepping motor is in a normal operation state when it is determined in the determination step that the stepping motor is not in a normal operation state.
2. The method of controlling an image forming apparatus according to claim 1,
in the detecting step, a vibration amount of the stepping motor is detected as a parameter value,
when it is determined in the determining step that the detected vibration amount is larger than the vibration amount stored in the storage unit in advance as the threshold value, it is determined that the stepping motor is not in a normal operation state, and a drive current larger than the drive current in the normal operation state of the stepping motor is applied to the stepping motor by the control unit in the controlling step.
3. The method of controlling an image forming apparatus according to claim 2,
the drive current in a normal operating state of the stepping motor is set in such a manner that the output torque of the stepping motor is equal to the load on the paper path.
4. The method of controlling an image forming apparatus according to claim 2 or 3,
when the vibration amount is equal to or less than the threshold value + 10%, the control unit does not change the drive current.
5. The method of controlling an image forming apparatus according to claim 4,
the control portion does not change the drive current when the vibration amount exceeds the threshold + 20%.
6. The method of controlling an image forming apparatus according to any one of claims 1 to 5,
the control unit divides the drive current into a plurality of stages and controls the drive current so as to change the drive current stage by stage.
7. The method of controlling an image forming apparatus according to claim 6,
after the control unit changes the drive current, the drive current is decreased by one step at a constant time until the drive current in the normal operation state of the stepping motor is obtained.
8. The method of controlling an image forming apparatus according to any one of claims 1 to 7,
the stepping motor is a stepping motor on a paper passage of the image forming apparatus.
9. The method of controlling an image forming apparatus according to any one of claims 2 to 7,
the vibration quantity is in a plurality of directions when the stepping motor vibrates.
10. A control system for an image forming apparatus controls a drive current applied to a stepping motor,
the control system for an image forming apparatus is characterized by comprising:
a detection unit that detects a parameter value of the stepping motor in an operating state;
a determination unit that compares the parameter value detected by the detection unit with a threshold value corresponding to the parameter value stored in advance in a storage unit, and determines whether or not the stepping motor is in a normal operating state;
and a control unit that controls the drive current so that the stepping motor is in a normal operating state when it is determined that the stepping motor is not in a normal operating state.
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| CN202010321067.0A CN113541541B (en) | 2020-04-22 | 2020-04-22 | Control method and control system for image forming apparatus |
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| CN202010321067.0A CN113541541B (en) | 2020-04-22 | 2020-04-22 | Control method and control system for image forming apparatus |
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| CN (1) | CN113541541B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0759392A (en) * | 1993-08-17 | 1995-03-03 | Hitachi Kiden Kogyo Ltd | Oscillating current controller of induction motor driving by inverter |
| JPH09146363A (en) * | 1995-11-20 | 1997-06-06 | Ricoh Co Ltd | Image forming device |
| JP2000166296A (en) * | 1998-11-27 | 2000-06-16 | Fujitsu Ltd | Method and device for driving body to be driven and printer using drive device |
| CN1767364A (en) * | 2004-10-27 | 2006-05-03 | 日本电气株式会社 | Motor-drive circuit and driving method |
| JP2006123251A (en) * | 2004-10-27 | 2006-05-18 | Canon Inc | Printing apparatus equipped with vibration suppressing function |
| KR100677491B1 (en) * | 2005-09-12 | 2007-02-02 | 엘지전자 주식회사 | Sound coupling vibration power control apparatus for mobile communication device |
| CN106160603A (en) * | 2016-09-23 | 2016-11-23 | 北京灵铱科技有限公司 | A kind of low-power-loss stepping |
| WO2019176338A1 (en) * | 2018-03-13 | 2019-09-19 | オムロン株式会社 | Motor drive device |
-
2020
- 2020-04-22 CN CN202010321067.0A patent/CN113541541B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0759392A (en) * | 1993-08-17 | 1995-03-03 | Hitachi Kiden Kogyo Ltd | Oscillating current controller of induction motor driving by inverter |
| JPH09146363A (en) * | 1995-11-20 | 1997-06-06 | Ricoh Co Ltd | Image forming device |
| JP2000166296A (en) * | 1998-11-27 | 2000-06-16 | Fujitsu Ltd | Method and device for driving body to be driven and printer using drive device |
| CN1767364A (en) * | 2004-10-27 | 2006-05-03 | 日本电气株式会社 | Motor-drive circuit and driving method |
| JP2006123251A (en) * | 2004-10-27 | 2006-05-18 | Canon Inc | Printing apparatus equipped with vibration suppressing function |
| KR100677491B1 (en) * | 2005-09-12 | 2007-02-02 | 엘지전자 주식회사 | Sound coupling vibration power control apparatus for mobile communication device |
| CN106160603A (en) * | 2016-09-23 | 2016-11-23 | 北京灵铱科技有限公司 | A kind of low-power-loss stepping |
| WO2019176338A1 (en) * | 2018-03-13 | 2019-09-19 | オムロン株式会社 | Motor drive device |
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| CN113541541B (en) | 2023-12-05 |
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