KR20100131877A - Stepping motor controller and control method for driving a disk member - Google Patents

Abstract

The present invention is a stepping motor control device for controlling the position of the upper and lower disk member having a through hole, the upper and lower by measuring the number of pulses applied to the stepping motor for driving the upper and lower disk member A position detecting unit for detecting whether the position of the disk member is a flow path communication position or a zero position; And receiving a position detection signal from the position sensing unit, and when rotating from the zero position to the flow path communication position, applying a pulse to the stepping motor at a first predetermined number per second to rotate the stepping motor, and the flow path communication position. And a pulse control rotating part for rotating the stepping motor by applying a pulse to the stepping motor at a second preset number more than the first preset number per second to the stepping motor. It provides a stepping motor controller for driving the.

Description

Control and method for controlling stepping motor driving disk member for driving disk member

The present invention relates to a stepping motor control apparatus and a control method for driving a disk member, and more particularly, to an apparatus and method for controlling the stepping motor for driving a disk member for communicating or blocking a flow path to generate an appropriate torque.

Recently, as various environmental pollutions increase, there are almost no homes or businesses using raw water, and more and more people buy and drink bottled water for drinking water at home. When drinking water is required in large quantities, such as restaurants, it is often used due to the economic burden.

Such a water purifier typically connects water supplied from a water pipe to a filter, and the filter is composed of a plurality of filters to filter various foreign substances or heavy metals by passing the supplied water. The filtered water is stored in the reservoir and the user is configured to drink or use the water by pushing the cup into an externally installed dispenser.

In connection with the use of the conventional water purifier as described above, the stepping motor is operated in the process of driving the disk member rotating inside the flow path opening and closing valve when the raw water is supplied from the water purifier, or the disk member inside the cleaning kit for cleaning the water purifier. At this time, the upper and lower disk members are rotated to slide each other to pass through the flow path to fit the through-holes.

During the stepping motor operation, the torque of the stepping motor varies depending on the external pressure or the degree of adhesion of the upper and lower disk members. In other words, if the torque is too large at the time of zero compensation of the upper disk member, there is a fear that the zero correction is not performed because tension is generated.If the upper disk member is rotated to a predetermined position of the lower disk member, a large external pressure is generated and the torque is increased. It may become too small.

Accordingly, there is a need for an apparatus and method that can generate appropriate torque when driving a stepping motor in accordance with the situation described above.

According to the present invention, the stepping motor for driving the upper disk member for communicating or blocking the flow path generates an appropriate torque so that the upper disk member can be stopped exactly at the zero position of the lower disk member and at the same time rotates to the predetermined position of the lower disk member. It is an object of the present invention to provide an apparatus and a method for rotating without being affected by external pressure.

In one aspect of the present invention, in the stepping motor control device for controlling the position of the upper and lower disk member having a through hole, by measuring the number of pulses applied to the stepping motor for driving the upper and lower disk member A position sensing unit for sensing whether the positions of the upper and lower disk members are flow path communication positions or zero positions; Receiving a position detection signal from the position sensing unit, applying a pulse to the stepping motor from the zero position to the flow path communication position by a first predetermined number per second, and from the flow path communication position to the zero position to the stepping motor per second A pulse controller for applying a pulse to a second preset number greater than the first preset number; And controlling the stepping motor with the first predetermined number so as to rotate the upper disk member from the zero position to the position where the through-hole of the lower disk member is located, from the blocking of the flow path to the flow of the flow. Stepping to drive the disk member, comprising: a rotation control unit for controlling the stepping motor to the second predetermined number to rotate the upper disk member to be positioned at the zero position of the lower disk member. Provides a motor controller.

In one embodiment of the present invention, when the upper disk member is rotated to the predetermined position after the flow path communication, or when the upper disk member is completed to rotate to the zero position after the flow path blocking, the pulse control unit is Provided is a stepping motor controller for driving a disk member, characterized by removing a pulse applied to the stepping motor.

In another embodiment of the present invention, the stepping motor provides a stepping motor control apparatus for driving the disk member, characterized in that to generate a greater torque during the flow path communication than when the flow path blocking.

Another aspect of the invention, the step of detecting that the through-hole of the upper disk member is in the zero position at the time of blocking the flow path of the lower disk member; The upper disk member controls the number of pulses per second applied to the stepping motor for driving the upper disk member from the zero position to the flow path communication position to a first predetermined number so that the upper disk member passes through the lower disk member. Rotating to a position; Detecting that the through hole of the upper disk member is at a position where the through hole is in flow path communication of the lower disk member; And the first preset number of pulses per second applied to the stepping motor from a position at which the upper disk member is a through hole of the lower disk member to a flow path blocking position at which the through holes of the upper and lower disk members are shifted from each other. And controlling the second preset number to rotate to a zero position of the lower disk member.

In another embodiment of the present invention, the pulse is applied to the stepping motor when the upper disk member is rotated to the flow path communication position with the through hole, or when the upper disk member is completed to rotate to the zero position It provides a stepping motor control method for driving a disk member, characterized in that it further comprises the step of removing.

In another embodiment of the present invention, the stepping motor provides a stepping motor control method for driving a disk member, characterized in that a larger torque is generated in the flow path communication than when the flow path blocking.

According to the present invention, a stepping motor for driving the upper disk member for communicating or blocking the flow path generates an appropriate torque so that the upper disk member is stopped exactly at the zero position of the lower disk member and rotates to a predetermined position of the lower disk member. When rotating, it can rotate without being influenced by external pressure.

Further, according to the present invention, the upper disk member is to be stopped exactly at the zero position and at the same time, even when rotating to the predetermined position of the lower disk member to rotate without being affected by the external pressure, through-holes of the upper and lower disk members Allow the enemy to pass through smoothly.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention may be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. The shape and the size of the elements in the drawings may be exaggerated for clarity and the same elements are denoted by the same reference numerals in the drawings.

1 is a perspective view of a flow path opening and closing valve with a stepping motor control device for driving a disk member of the present invention, and FIG. 2 is a schematic internal configuration diagram of FIG. 1.

The main body 40 forms a first flow passage communicating with the raw water pipe 90 and a second flow passage branching from the first flow passage to one side.

The main body 40 has an inlet port 41 connected to the raw water pipe 90 at one side thereof, and a first outlet port 42a connected to the first pipe 91 in a direction perpendicular thereto is formed. The second outlet port 42b connected to the second pipe 92 is formed at the other side opposite to the port 41.

Here, the first flow path connected from the inflow port 41 of the main body 40 to the first outflow port 42a is formed in an L shape, and the second flow path connected from the inflow port 41 to the second outflow port 42b is formed. It is preferable that the flow path is made of a? -Shape.

The disk members 50 and 60 are stacked to be rotatable mutually to communicate or block a flow path of the main body 40, and are divided into an upper disk member 60 and a lower disk member 50.

The upper disk member 60 has one through hole 61 formed therein, and the lower disk member 50 is mounted at a point where the first flow path and the second flow path branch inside the main body 40 and are branched up and down. Has a through hole 61 therethrough. The upper disk member 60 rotates so that the through holes 51, 52, 53, 54 of the upper disk member 60 interact with one of the through holes 51, 52, 53, 54 of the lower disk member 50. If there is a match, the flow path is communicated, and when the through hole 61 of the upper disc member 60 is displaced from the through holes 51, 52, 53, 54 of the lower disc member 50, the flow path is blocked. These through holes 51, 52, 53, and 54 are formed of the first through fourth through holes 51, 52, 53, and 54, and they have a fan-shaped through structure.

In addition, the disk members 50 and 60 are preferably made of a ceramic material, because the ceramic material has an advantage that surface roughness, strength, and durability are much superior to rubber, which was a material of a switchgear in the prior art. to be.

Therefore, when the upper disk member 60 is rotated on the upper portion of the lower disk member 50, the rotational operation is much smoother than the conventional opening and closing port, it is possible to maintain a high airtightness or watertightness excellent in mutual adhesion.

The upper disk member 60 is provided in a state in which the upper disk member 60 is rotatably in close contact with one side of the lower disk member 50, preferably the upper surface of the lower disk member 50.

The upper disk member 60 is rotated by a stepping motor 100. The step detector 200, the pulse controller 300, and the rotation controller 400 are connected to the stepping motor 100.

The position sensor 200 measures the number of pulses applied to the stepping motor 100 to penetrate the upper disk member 60 until the upper disk member 60 rotates and stops on the lower disk member 50. It is detected whether the ball 61 is in the zero position at the time of blocking the flow path of the lower disk member 50 or the predetermined position of the lower disk member 50. That is, the position detecting unit 200 measures the number of pulses generated by the stepping motor 100 and multiplies the number of pulses by the rotation angle per pulse so that the through hole of the upper disk member 60 is the zero position or the lower disk member. Since the angle rotated from the predetermined position of 50 can be obtained, the position of the upper disk member 60 can be detected. In relation to the position detection, since the through hole 61 of the upper disk member 60 is in the zero position in the initial use, the position can be detected by simply measuring the number of pulses thereafter.

The pulse controller 300 controls the number of pulses per second (PPS) applied to the stepping motor 100, and through holes 51, 52, 53, and 54 of the upper and lower disk members 60 and 50. The control method is different when the flow path is communicated through) and when the flow path is blocked. That is, the pulse control unit 300 receives the position detection signal from the position detection unit 200, so that the upper disk member 60 drives the upper disk member 60 from the zero position to the flow path communication position (100) Pulses are applied at a first preset number per second, and the upper disk member 60 is pulsed at a second preset number more than the first preset number per second to the stepping motor 100 until the flow path is blocked from the flow path communication position. Apply. When controlling the stepping motor 100 in this manner, a larger torque is generated during flow path communication than when the flow path is blocked.

In addition, the pulse control unit 300 when the upper disk member 60 is rotated to the preset position after the flow path communication, or when the upper disk member 60 is completed to rotate to the zero position after the flow path blocking, the pulse control unit 300 removes a pulse applied to the stepping motor 100.

The rotation controller 400 controls the rotation of the stepping motor 100, and the flow path is blocked when the flow path communicates through the through holes 51, 52, 53, 54 of the upper and lower disk members 60 and 50. If so, control method is different. That is, the rotation control unit 400 passes through the through holes 51, 52, 53, 54 of the upper and lower disk members 60 and 50 which are stacked in a rotatable manner so as to communicate or block the flow path. Until the communication, the stepping motor 100 is controlled by the first predetermined number to rotate the upper disk member 60 from the zero position to the predetermined position of the lower disk member 50, and the upper and lower disk members 60, The second preset setting is performed so that the upper disk member 60 is rotated and positioned at the zero position of the lower disk member 50 through the through holes 51, 52, 53, and 54 through the through holes 51, 52, 53, 54, respectively. The stepping motor 100 is controlled by the number.

The zero position of the upper disk member 60 may be designed in various ways, but in the present invention, the zero position is designed such that the through hole 61 of the upper disk member 60 is in the position as shown in FIG. 2. That is, the through hole 61 of the upper disk member 60 is designed to coincide with the first through hole 51 of the lower disk member 50.

Conventionally, during zero calibration of the upper disk member 60, if the torque is too large, tension is generated, which may cause the zero calibration to be difficult, and the upper disk member 60 is rotated to a predetermined position of the lower disk member 50. In this case, a lot of external pressure is generated and the torque is too small. In such states, appropriate torque is generated when the stepping motor 100 is driven according to the present invention, depending on the zero point correction or the case where the lower disk member 50 is rotated to a predetermined position. That is, by increasing the number of pulses per second applied to the stepping motor 100 at the time of blocking the flow path and reducing the number of pulses per second applied to the stepping motor 100 at the time of communication, the stepping motor 100 is generated at the time of blocking the flow path. The torque to be made is small, and the torque generated by the stepping motor 100 during the flow path communication is increased. At this time, the number of pulses per second applied to the stepping motor 100 when the flow path is blocked is greater than the number of pulses per second applied to the stepping motor 100 during the flow path communication, thereby generating the stepping motor 100 when the flow path is blocked. The torque is smaller than the torque generated by the stepping motor 100 during passage flow.

Looking at the stepping motor control method for driving the disk member of the present invention as follows.

First, the position detecting unit 200 detects that the through hole 61 of the upper disk member 60 is in the zero position at the time of blocking the flow path of the lower disk member 50.

Thereafter, the pulse control unit 300 moves from the time when the upper disk member 60 is in the zero position to the flow path communication through the through holes 51, 52, 53, 54 of the upper and lower disk members 60 and 50. After controlling the number of pulses per second applied to the stepping motor 100 for driving the upper disk member 60 to the first predetermined number, the rotation controller 400 controls the upper disk member 60 to provide the lower disk member ( Rotate to the preset position of 50).

Subsequently, the position detecting unit 200 detects that the through hole 61 of the upper disk member 60 is at the position of the through holes 51, 52, 53, and 54 when the lower disk member 50 communicates with the channel. do.

Thereafter, the passages through which the through holes 51, 52, 53, 54 of the upper and lower disk members 60, 50 are displaced from each other when the upper disk member 60 is in a predetermined position of the lower disk member 50. After the pulse control unit 300 controls the number of pulses per second applied to the stepping motor 100 to the second predetermined number more than the first predetermined number until the interruption, the rotation control unit 400 controls the lower disk member 50. To the zero position.

FIG. 3 is an embodiment of a manner in which the upper disk member of FIG. 2 is rotated to move to the zero position.

In FIG. 2, the rotation controller 400 rotates the upper disk member 60 from a zero position to a preset position. The preset position is set by the user using the water purifier. 52, 53, 54 may be any one of the positions.

In FIG. 3, the upper disk member 60 is rotated 90 ° from the zero position by the driving of the stepping motor 100. The through-hole 61 of the upper disk member 60 is the lower disk member 50. The flow path is in communication with each other with the fourth through hole 54. Similarly, when the upper disk member 60 is rotated 180 degrees from the zero position by the driving of the stepping motor 100, the through hole 61 of the upper disk member 60 is the third through hole of the lower disk member 50. The flow paths communicate with each other at 54.

4 is a relation graph of torque generated by the stepping motor with respect to the number of pulses per second applied to the stepping motor of the present invention. As shown in FIG. 4, the torque [Torque, T] is changed according to the number of pulses per second applied to the stepping motor. At this time, the torque tends to decrease as the number of pulses per second increases.

In the example of FIG. 4, the number of pulses per second applied to the stepping motor 100 when the flow path is reduced to about 100 PPS, and the number of pulses per second applied to the stepping motor 100 when the flow path is blocked to about 250 PPS. By controlling the number of pulses per second as described above, the torque generated by the stepping motor 100 during flow path communication can be increased to about 5T, and the torque generated by the stepping motor 100 when the flow path is blocked can be reduced to about 3T.

The stepping motor control apparatus for driving the disk member of the present invention has been applied to the disk member applied to the channel opening / closing valve of the water purifier as described above, but it can also be applied to the disk member applied to the cleaning kit for cleaning the water purifier. Of course.

The present invention is not limited by the above-described embodiment and the accompanying drawings. It is intended that the scope of the invention be limited by the appended claims, and that various forms of substitution, modification, and alteration are possible without departing from the spirit of the invention as set forth in the claims. Will be self-evident.

1 is a perspective view of a flow path opening and closing valve with a stepping motor control device for driving a disk member of the present invention.

FIG. 2 is a schematic internal configuration diagram of FIG. 1.

FIG. 3 is an embodiment of a manner in which the upper disk member of FIG. 2 is rotated to move to the zero position.

4 is a relation graph of torque generated by the stepping motor with respect to the number of pulses per second applied to the stepping motor of the present invention.

                 <Explanation of symbols for the main parts of the drawings>

30: flow path opening and closing valve 40: main body

41: inlet port 42a: first outlet port

42b: second outlet port 50, 60: disk member

51, 52, 53, 54, 61: through hole 70: control panel

90: raw water pipe 91: first pipe

92 second pipe 100 stepping motor

200: position detection unit 300: pulse control unit

400: rotation control unit

Claims (6)

A stepping motor controller for controlling positions of upper and lower disk members having through holes, A position sensing unit configured to measure the number of pulses applied to the stepping motor for driving the upper and lower disk members to detect whether the position of the upper and lower disk members is a flow path communication position or a zero position; Receiving a position detection signal from the position sensing unit, when rotating from the zero position to the flow path communication position, a pulse is applied to the stepping motor at a first predetermined number per second, and when rotating from the flow path communication position to the zero position A pulse controller for applying a pulse to the stepping motor at a second preset number greater than the first preset number per second; And A rotation controller which rotates the stepping motor with a preset number of pulses applied to the pulse controller; Stepping motor control device for driving a disk member comprising a. The method of claim 1, When the upper disk member is rotated to the position of the through-hole of the lower disk member after the flow path communication, or when the upper disk member is completed to rotate to the zero position after the flow path blocking, the pulse control unit to the stepping motor Stepping motor control device for driving the disk member, characterized in that for removing the applied pulse. The method of claim 1, The stepping motor control apparatus for driving a disk member, characterized in that the stepping motor generates a greater torque during flow path communication than when the flow path blocking. Detecting that the through hole of the upper disk member is in the zero position at the time of blocking the flow path of the lower disk member; The upper disk member penetrates the lower disk member by controlling the number of pulses per second applied to the stepping motor for driving the upper disk member from the zero position to the flow path communication position to a first predetermined number. Rotating to the position where the ball is located; Detecting that the through hole of the upper disk member is at a position where the through hole is in flow path communication of the lower disk member; And The number of pulses per second applied to the stepping motor from the position where the through-hole of the upper disk member passes through the flow path of the lower disk member to the flow path blocking position where the through-holes of the upper and lower disk members shift from each other is determined. Rotating to a zero position of the lower disc member by controlling a second preset number greater than one preset number; Stepping motor control method for driving a disk member comprising a. The method of claim 4, wherein Removing the pulse applied to the stepping motor when the upper disk member is rotated to the flow path communication position in which the through disk of the lower disk member is located, or when the upper disk member is completed to the zero position. Stepping motor control method for driving a disk member, characterized in that it further comprises. The method of claim 4, wherein The stepping motor control method for driving a disk member, characterized in that the stepping motor generates a greater torque when the flow path communication than when the flow path blocking.

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