CN118224364A - Step driver, rotary valve control system and control method thereof - Google Patents
Step driver, rotary valve control system and control method thereof Download PDFInfo
- Publication number
- CN118224364A CN118224364A CN202211651485.1A CN202211651485A CN118224364A CN 118224364 A CN118224364 A CN 118224364A CN 202211651485 A CN202211651485 A CN 202211651485A CN 118224364 A CN118224364 A CN 118224364A
- Authority
- CN
- China
- Prior art keywords
- port
- rotary valve
- host
- motor
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000008569 process Effects 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000011065 in-situ storage Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention provides a stepping driver, a rotary valve control system and a control method thereof. The step driver includes: a valve interface that receives an origin homing signal and a port alignment signal; the motor interface is used for sending driving pulses to the motor so that the motor drives the rotating part of the rotary valve to rotate; the host interface is used for receiving a command from a host and feeding back a signal to the host; and the processing unit is configured to analyze the valve position command from the host, perform corresponding operation to enable the rotary valve to rotate to the target gating port position and feed back an in-place signal to the host through the host interface.
Description
[ Field of technology ]
The invention relates to the field of rotary valves, in particular to a stepping driver, a rotary valve control system and a control method thereof.
[ Background Art ]
Fig. 1 is a prior art rotary valve control scheme. As shown in fig. 1, all rotary valves (valves marked in fig. 1) send feedback signals back to a PLC (programmable logic controller) controller through a junction box, which controls a stepper driver, stepper motor, and thus the rotary valves, through a positioning module, the junction box. Such a solution has the following drawbacks: the number of rotary valves which can be supported by the PLC is small, and the expansibility is poor; secondly, the response speed of the PLC is slower; and the distance between the third branch box and the positioning module is not more than 5 meters.
In view of the above, there is a need for a new and improved solution to the above-mentioned problems.
[ Invention ]
The invention aims to provide a stepping driver, a rotary valve control system and a control method thereof, which have the advantages of simple structure, long control cable length (such as tens of meters), high control precision and timely response.
In order to achieve the above object, according to one aspect of the present invention, there is provided a step driver of a rotary valve including a rotary part in a middle part and a fixed part surrounding the rotary part, a common port being provided in the rotary part, a plurality of optional ports being provided in the fixed part, a motor driving the rotary part to rotate so that the common port communicates with any one of the optional ports, the rotary valve including an origin sensor and a port sensor, the origin sensor outputting an effective origin homing signal when the common port communicates with the optional port as an origin, otherwise outputting an ineffective origin homing signal, the port sensor outputting an effective port alignment signal when the common port communicates with any one of the optional ports, otherwise outputting an ineffective port alignment signal, comprising: a valve interface coupled to the home sensor and the port sensor of the rotary valve that receives the home signal from the home sensor and the port alignment signal from the port sensor; the motor interface is connected with the motor and is used for sending driving pulse to the motor so that the motor drives the rotating part of the rotary valve to rotate, and the common port is communicated with one of the selected ports; a host interface connected with the host for receiving a command from the host; and the processing unit is configured to analyze the command of the host, control the motor to rotate according to the original point homing signal and/or the port alignment signal until the command of the host is completed, and feed back a signal to the host through the host interface.
According to another aspect of the present invention, there is provided a rotary valve control system comprising: a motor; the rotary valve comprises a rotary part positioned in the middle and a fixed part surrounding the rotary part, wherein a common port is arranged in the rotary part, a plurality of optional ports are arranged in the fixed part, the motor drives the rotary part to rotate so that the common port is communicated with any one of the optional ports, the rotary valve comprises an origin sensor and a port sensor, when the common port is communicated with the optional port serving as an origin, the origin sensor outputs an effective origin homing signal, otherwise, an ineffective origin homing signal is output, and when the common port is communicated with any one of the optional ports, the port sensor outputs an effective port alignment signal, otherwise, an ineffective port alignment signal is output; the step driver, which includes: a valve interface coupled to the home sensor and the port sensor of the rotary valve that receives the home signal from the home sensor and the port alignment signal from the port sensor; the motor interface is connected with the motor and is used for sending driving pulse to the motor so that the motor drives the rotating part of the rotary valve to rotate, and the common port is communicated with one of the selected ports; the host interface is connected with the host and is used for receiving a command from the host and feeding back a signal to the host; and the processing unit is configured to analyze the command of the host, control the motor to rotate according to the original point homing signal and/or the port alignment signal until the command of the host is completed, and feed back a signal to the host through the host interface.
According to another aspect of the present invention, there is provided a control method based on the above rotary valve control system, comprising: parsing a valve position command from the host to obtain a target strobe port position; determining a rotation direction according to the current gating port position and the target gating port position; and sending a preset number of driving pulses to the motor through the motor interface, so that the motor drives the rotating part of the rotary valve to rotate, judging whether the current gating port position is the target gating port position when the port alignment signal is effective, stopping valve rotation if the current gating port position is the target gating port position, and feeding back an in-place signal to the host through the host interface.
Embodiments of the present invention may provide a number of advantages over existing solutions: the control cable has the advantages of simple structure, long control cable length (such as tens of meters), high control precision, timely response and good expansibility.
It is therefore to be understood that this summary is provided only for purposes of summarizing some embodiments in order to provide a basic understanding of some aspects of the invention. Accordingly, the above-described embodiments are merely examples and should not be construed as narrowing the scope or spirit of the present invention in any way. Features, aspects, and advantages of the various embodiments will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of some embodiments.
[ Description of the drawings ]
The invention will be more readily understood by reference to the following detailed description in conjunction with the accompanying drawings, wherein like reference numerals designate like structural elements, and in which:
FIG. 1 is an example of a prior art rotary valve control scheme;
FIG. 2 is a schematic diagram of a rotary valve control system of the present invention in an embodiment;
FIG. 3 is a schematic cross-sectional view of a rotary valve according to the present invention;
FIG. 4 is a block diagram of a stepper driver in one embodiment of the present invention;
FIG. 5 is an example of the valve interface of FIG. 4;
Fig. 6 is an example of the motor interface of fig. 4.
[ EXAMPLES ]
Some embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments are shown. Indeed, various embodiments of the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. For example, unless otherwise indicated, nothing herein as first, second, etc. should be construed as implying a particular order. Furthermore, something may be described as being higher than something (unless otherwise stated) and actually lower than something, and vice versa; also something described as being on the left side may be on the right side and vice versa. Like reference numerals refer to like elements throughout.
FIG. 2 is a schematic diagram of a rotary valve control system according to an embodiment of the present invention. As shown in fig. 2, the rotary valve control system 100 includes: a host 110, a stepper driver 120, a motor 130, and a rotary valve 140.
The host 110 may be a PLC controller or a computer device. The motor 130 includes a driving interface 131 connected to the step driver 120, and the driving interface 131 can receive driving pulses to drive the rotating shaft of the motor to rotate step by step. For example, 3200 drive pulses are required to rotate the valve one revolution.
Fig. 3 is a schematic cross-sectional view of the rotary valve 140 according to the present invention. The rotary valve 140 includes a rotary portion 143 located in the middle and a fixed portion 142 surrounding the rotary portion 143, a common port 145 is provided in the rotary portion 143, a plurality of optional ports 143 are provided in the fixed portion 142, and the motor 130 drives the rotary portion 143 to rotate so that the common port 145 communicates with any one of the optional ports 144. The rotary valve 140 includes a home sensor (not shown) and a port sensor (not shown). When the common port 145 is connected to the optional port 144 as the origin, the origin sensor outputs a valid origin return signal, and otherwise, outputs an invalid origin return signal. That is, one of the optional ports 144 will be referred to as the origin or origin position, and when the common port 145 is in communication with the selected port 144 located at the origin, the origin sensor will output a valid origin homing signal indicating that the common port 145 is currently located at the origin position, or indicating that the rotary valve 140 is currently located at the origin position. An inactive home signal indicates that the common port 145 is not currently in the home position, or that the rotary valve 140 is not currently in the home position. When the common port 145 is in communication with any one of the selected ports, the port sensor outputs a valid port alignment signal, otherwise, outputs an invalid port alignment signal. That is, each time the common port 145 passes through a selected port, the port sensor outputs a valid port alignment signal, and by counting the number of times and the rotation direction of the valid port alignment signal, it is possible to know which selected port the common port 145 of the rotary valve is currently gating with, or to know which position the rotary valve is currently located. The rotary valve 140 further includes an interface 141 connected to the step driver 120, and the port alignment signal and the origin homing signal are outputted through the interface 141.
Fig. 4 is a block diagram of a stepper driver 120 in one embodiment of the present invention. As shown in fig. 4, the step driver 120 includes: a valve interface 123 connected to the home sensor and the port sensor of the rotary valve 140, a motor interface 122 connected to the motor 130, a host interface 121 connected to the host 110, and a processing unit 124.
The host interface 121 may be an RJ45 or RS485 interface. The wiring between the PLC controller and the stepper driver may be long, e.g. several tens of meters, thus freeing from distance limitations. The host interface 121 is used to receive various commands from the host 110 and to feed back various signals to the host.
The motor interface 122 is configured to send a driving pulse to the motor 130, so that the motor 130 drives the rotating portion 143 of the rotary valve 140 to rotate, and the common port 145 is further communicated with one of the selected ports 144. Fig. 6 is an example of the motor interface 122 of fig. 4, with drive pulses sent to the motor through ports a+, a-, b+, and B-.
The valve interface 123 receives an origin homing signal from the origin sensor and a port alignment signal from the port sensor. Fig. 5 is an example of the valve interface 123 of fig. 4, the valve interface 123 receiving an origin homing signal from the origin sensor and a port alignment signal of the port sensor through one or both of ports X3-X8, XCOM, the valve interface 123 powering the origin sensor and the port sensor through ports y1+, y1-, y2+, and Y2-.
The processing unit 124 is configured to parse the command of the host 110, control the motor 130 to rotate according to the origin homing signal and/or the port alignment signal until the command of the host is completed, and feed back a signal to the host 110 through the host interface 121.
Since the host 110 only needs to send commands and receive feedback signals, specific command execution is performed by the stepper driver 120, the host 100 can support a greater number of stepper drivers 120 and be more easily scalable. In addition, since the stepper driver 120 directly controls the motor 130 according to the signal from the rotary valve 140, the response speed is high and the control accuracy is high. In addition, the system architecture is simpler.
In one embodiment, the processing unit 124 is configured to parse the valve position command from the host 110 to obtain a target gate port position, determine a rotation direction according to the current gate port position and the target gate port position of the rotary valve 140, send a predetermined number of driving pulses to the motor 130 through the motor interface 122, so that the motor 122 drives the rotating portion of the rotary valve 140 to rotate, determine whether the current gate port position is the target gate port position when the port alignment signal is valid, if yes, stop valve rotation, and feed back a bit signal to the host 110 through the host interface 121, if no, continue to rotate the rotary valve 140. The direction of rotation may be a first direction, such as a clockwise direction, also referred to as a positive direction, or a second direction opposite the first direction, such as a counter-clockwise direction, also referred to as a negative direction. Because the rotary valve can rotate either positively or negatively, a positive rotation may be used to rotate in place more quickly when the processing unit 124 determines that positive rotation is closer based on the current gate port position and the target gate port position, and a negative rotation may be used to rotate in place more quickly when the processing unit 124 determines that negative rotation is closer based on the current gate port position and the target gate port position.
Specifically, the number of the selected ports of the rotary valve is N, where N is greater than or equal to 3, for example, n=16 in fig. 3, and the rotary portion of the rotary valve 140 makes one rotation, that is, 360 degrees, for example, the port alignment signal is valid 17 times (where the origin position is twice) when the rotary portion starts from the origin position and returns to the origin position, and the origin homing signal is valid 2 times. The processing unit 124 includes a position memory, where the position memory stores a current gating port position of the rotary valve 140, where the current gating port position indicates a position of a currently selected port of the rotary valve that is in communication with the common port, and the current gating port position stored in the position memory is updated in real time during rotation of the rotary valve. In one example, the position memory has a position value P, which is an initial value, such as 0, when the rotary valve 140 is located at the origin position, and is self-increased by 1 each time the port alignment signal is valid when the rotary valve 140 is rotated in a first direction, and is self-decreased by 1 each time the port alignment signal is valid when the rotary valve 140 is rotated in a second direction opposite to the first direction, and is directly hopped to a predetermined value from the initial value, which is equal to the initial value +n-1, if the rotary valve 140 is rotated in the second direction opposite to the first direction when the rotary valve 140 is located at the origin position. And indicating the position of the currently selected port communicated with the common port according to the position value.
Taking fig. 3 as an example, the uppermost selected port is denoted as the origin position O, and is denoted as the first selected port, at this time, assuming that the initial value is 0, i.e., P is 0, the rotary valve 140 is rotated forward, if p+1=1 arrives at the second selected port, when p+1=2, … …, and so on, if p+1=15 arrives at the 16 th selected port, then the rotary valve 140 is rotated again to return to the origin position O, i.e., the first selected port, and at this time P is reset to the initial value 0 again. If the rotary valve 140 is at the origin position, when the rotary valve 140 is rotated reversely, the 16 th selected port is directly reached, p=15, and when the rotary valve 140 is rotated reversely, P is reduced by 1 per one selected port.
In one embodiment, the processing unit 124 is configured to parse an origin homing command from the host, and then send a driving pulse to the motor through the motor interface 122, so that the motor 130 drives the rotary part of the rotary valve 140 to rotate in a first direction or a second direction opposite to the first direction, and when the origin homing signal is valid and the port alignment signal is valid, the current gating port position is considered to be the origin position. After the rotary valve moves to the origin position, the processing unit 124 controls the rotary valve 140 to rotate 360 degrees along the first direction or the second direction opposite to the first direction, determines whether all the selected ports can be used normally according to the valid times of the port alignment signals, and if so, feeds back a homing signal to the host 110 through the host interface 121. The host 110 can know that the rotary valve 140 has returned to the original position according to the feedback homing signal, and each optional port is normal.
In one embodiment, the processing unit 124 includes a relational memory. The relation memory stores a reference correspondence between the rotational position of the rotary valve 140 and the rotational position of the motor 130, and if the processing unit 124 finds that the actual correspondence between the rotational position of the rotary valve 140 and the rotational position of the motor 130 does not satisfy the reference correspondence, the host 110 is alerted or requested to stop through the host interface 121. Therefore, the fault can be timely detected, and hidden danger is eliminated.
According to another aspect of the present invention, the present invention also provides a control method based on the above rotary valve control system, which includes: parsing a valve position command from the host to obtain a target strobe port position; determining a rotation direction according to the current gating port position and the target gating port position; and sending a preset number of driving pulses to the motor through the motor interface, so that the motor drives the rotating part of the rotary valve to rotate, judging whether the current gating port position is the target gating port position when the port alignment signal is effective, stopping valve rotation if the current gating port position is the target gating port position, and feeding back an in-place signal to the host through the host interface.
In one embodiment, the processing unit is configured to parse a valve position command from the host to obtain a target gate port position, determine a rotation direction according to a current gate port position and the target gate port position, send a predetermined number of driving pulses to the motor through the motor interface, so that the motor drives the rotating part of the rotary valve to rotate, when the port alignment signal is valid, judge whether the current gate port position is the target gate port position, if yes, stop the valve from rotating, and feed back a signal to the host through the host interface, where the number of selected ports of the rotary valve is N, and N is greater than or equal to 3. The processing unit comprises a position memory, the position memory stores the current gating port position of the rotary valve, the current gating port position indicates the position of the current selected port of the rotary valve, which is communicated with the common port, and the current gating port position stored in the position memory can be updated in real time in the process of rotating the rotary valve.
In one embodiment, the processing unit is configured to parse an origin homing command from the host, then send a driving pulse to the motor through the motor interface, so that the motor drives the rotating part of the rotary valve to rotate along a first direction or a second direction opposite to the first direction, when the origin homing signal is valid and the port alignment signal is valid, consider the current gating port position to be the origin position, after the rotary valve moves to the origin position, control the rotary valve to rotate 360 degrees along the first direction or the second direction opposite to the first direction, and judge whether all selected ports can be normally used through the valid times of the port alignment signal, if so, feed back the homing signal to the host through the host interface.
The above description is intended to be illustrative, and not restrictive. Although the invention has been described with reference to specific illustrative examples, it is to be understood that the invention is not limited to the described embodiments. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
Reference herein to "one example" or "an example" means that a particular feature, structure, or characteristic described in connection with the example is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. The terms "plurality" and "a plurality" as used herein mean two or more. "and/or" in the present invention means "and" or ". Furthermore, the terms "first," "second," "third," "fourth," and the like as used herein are intended as labels to distinguish between different elements and may not necessarily have a sequential meaning depending on their numerical designation. Thus, the terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting.
It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may in fact be executed substantially concurrently or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
Although the method operations are described in a particular order, it should be understood that other operations may be performed between the described operations. The described processes may be adjusted so that they occur at slightly different times, or the described operations may be distributed throughout the system. The system allows multiple unrelated programs to be processed simultaneously.
Many modifications and other implementations of the invention will come to mind to one skilled in the art to which this invention pertains having knowledge of the relevant industry and some of the raw data. Therefore, it is to be understood that the invention is not to be limited to the specific embodiments disclosed and that modifications are intended to be included within the scope of the appended claims. Furthermore, although the foregoing description and the associated drawings describe the implementation of particular combinations of elements, functions in particular embodiments, elements, functions in different combinations are also included by substitution within the scope of the appended claims. The following claims also contain elements, functions in combination with those explicitly described above. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (13)
1. A stepping driver of a rotary valve, the rotary valve includes a rotary part located in the middle and a fixed part surrounding the rotary part, a common port is provided in the rotary part, a plurality of optional ports are provided in the fixed part, a motor drives the rotary part to rotate so that the common port is communicated with any one of the optional ports, the rotary valve includes an origin sensor and a port sensor, when the common port is communicated with the optional port serving as an origin, the origin sensor outputs an effective origin homing signal, otherwise, an ineffective origin homing signal is output, when the common port is communicated with any one of the optional ports, the port sensor outputs an effective port alignment signal, otherwise, an ineffective port alignment signal is output, the stepping driver is characterized in that: it comprises the following steps:
A valve interface coupled to the home sensor and the port sensor of the rotary valve that receives the home signal from the home sensor and the port alignment signal from the port sensor;
The motor interface is connected with the motor and is used for sending driving pulse to the motor so that the motor drives the rotating part of the rotary valve to rotate, and the common port is communicated with one of the selected ports;
a host interface connected with the host for receiving a command from the host;
and the processing unit is configured to analyze the command of the host, control the motor to rotate according to the original point homing signal and/or the port alignment signal until the command of the host is completed, and feed back a signal to the host through the host interface.
2. The stepper driver of claim 1 wherein the processing unit is configured to parse a valve position command from the host to obtain a target gate port position, determine a rotational direction based on a current gate port position and a target gate port position, send a predetermined number of drive pulses to the motor via the motor interface to cause the motor to rotate a rotating portion of the rotary valve, determine if the current gate port position is a target gate port position whenever the port alignment signal is valid, if so, stop valve rotation, and feed back a bit signal to the host via the host interface, otherwise continue to control the rotary valve rotation.
3. The stepper driver of claim 2 wherein the number of selected ports of the rotary valve is N, N being 3 or more,
The processing unit comprises a position memory, the position memory stores the current gating port position of the rotary valve, the current gating port position indicates the position of the current selected port of the rotary valve, which is communicated with the common port, and the current gating port position stored in the position memory can be updated in real time in the process of rotating the rotary valve.
4. The stepper driver of claim 3 wherein the step of moving the actuator is performed,
The position memory is provided with a position value, when the rotary valve is positioned at an original point position, the position memory is provided with an initial value, when the rotary valve is rotated along a first direction, the position value is automatically increased by 1 each time the port alignment signal is effective, when the rotary valve is rotated along a second direction opposite to the first direction, the position value is automatically decreased by 1 each time the port alignment signal is effective,
When the rotary valve is located at the origin position, if the rotary valve is rotated in a second direction opposite to the first direction, the position value is directly hopped from the initial value to a predetermined value, which is equal to the initial value + N-1,
And indicating the position of the currently selected port communicated with the common port according to the position value.
5. The stepper driver of claim 1 wherein the step of driving the motor is performed,
The processing unit is configured to analyze an origin homing command from the host, and then send a driving pulse to the motor through the motor interface, so that the motor drives the rotating part of the rotary valve to rotate along a first direction or a second direction opposite to the first direction, and when the origin homing signal is valid and the port alignment signal is valid, the current gating port position is considered to be the origin position.
6. The stepper driver of claim 5 wherein the step of providing a drive signal to the stepper motor is,
After the rotary valve moves to the original point position, the rotary valve is controlled to rotate 360 degrees along the first direction or the second direction opposite to the first direction, whether all selected ports can be normally used is judged through the effective times of the port alignment signals, and if so, a homing signal is fed back to the host through the host interface.
7. The step driver according to claim 1, wherein the processing unit includes a relation memory in which a reference correspondence of a rotational position of the rotary valve and a rotational position of the motor is stored, and if the processing unit finds that an actual correspondence of the rotational position of the rotary valve and the rotational position of the motor does not satisfy the reference correspondence, the host is alerted or requested to stop through the host interface,
The valve interface provides electrical power to the in-situ sensor and the port sensor.
8. A rotary valve control system, comprising:
A motor;
The rotary valve comprises a rotary part positioned in the middle and a fixed part surrounding the rotary part, wherein a common port is arranged in the rotary part, a plurality of optional ports are arranged in the fixed part, the motor drives the rotary part to rotate so that the common port is communicated with any one of the optional ports, the rotary valve comprises an origin sensor and a port sensor, when the common port is communicated with the optional port serving as an origin, the origin sensor outputs an effective origin homing signal, otherwise, an ineffective origin homing signal is output, and when the common port is communicated with any one of the optional ports, the port sensor outputs an effective port alignment signal, otherwise, an ineffective port alignment signal is output;
A stepper driver, comprising: a valve interface coupled to the home sensor and the port sensor of the rotary valve that receives the home signal from the home sensor and the port alignment signal from the port sensor; the motor interface is connected with the motor and is used for sending driving pulse to the motor so that the motor drives the rotating part of the rotary valve to rotate, and the common port is communicated with one of the selected ports; the host interface is connected with the host and is used for receiving a command from the host and feeding back a signal to the host; and the processing unit is configured to analyze the command of the host, control the motor to rotate according to the original point homing signal and/or the port alignment signal until the command of the host is completed, and feed back a signal to the host through the host interface.
9. The rotary valve control system according to claim 8, wherein,
The processing unit is configured to parse a valve position command from the host to obtain a target gate port position, determine a rotation direction according to a current gate port position and the target gate port position, send a predetermined number of driving pulses to the motor through the motor interface, enable the motor to drive a rotating part of the rotary valve to rotate, judge whether the current gate port position is the target gate port position when the port alignment signal is valid, stop the valve from rotating if the current gate port position is the target gate port position, and feed back a bit signal to the host through the host interface,
The number of the selected ports of the rotary valve is N, N is more than or equal to 3,
The processing unit comprises a position memory, the position memory stores the current gating port position of the rotary valve, the current gating port position indicates the position of the current selected port of the rotary valve, which is communicated with the common port, and the current gating port position stored in the position memory can be updated in real time in the process of rotating the rotary valve.
10. The rotary valve control system according to claim 8, wherein,
The processing unit is configured to parse an origin homing command from the host, and then send a driving pulse to the motor through the motor interface, so that the motor drives the rotating part of the rotary valve to rotate along a first direction or a second direction opposite to the first direction, and when the origin homing signal is valid and the port alignment signal is valid, the current gating port position is considered to be the origin position,
After the rotary valve moves to the original point position, the rotary valve is controlled to rotate 360 degrees along the first direction or the second direction opposite to the first direction, whether all selected ports can be normally used is judged through the effective times of the port alignment signals, and if so, a homing signal is fed back to the host through the host interface.
11. A control method based on the rotary valve control system according to claim 10, characterized by comprising:
Parsing a valve position command from the host to obtain a target strobe port position;
Determining a rotation direction according to the current gating port position and the target gating port position;
And sending a preset number of driving pulses to the motor through the motor interface, so that the motor drives the rotating part of the rotary valve to rotate, judging whether the current gating port position is the target gating port position when the port alignment signal is effective, stopping valve rotation if the current gating port position is the target gating port position, and feeding back an in-place signal to the host through the host interface.
12. The control method of claim 11, wherein the number of selected ports of the rotary valve is N, N being 3 or more,
The processing unit comprises a position memory, the position memory stores the current gating port position of the rotary valve, the current gating port position indicates the position of the current selected port of the rotary valve, which is communicated with the common port, and the current gating port position stored in the position memory can be updated in real time in the process of rotating the rotary valve.
13. The control method according to claim 11, characterized by further comprising:
the processing unit is configured to parse an origin homing command from the host;
sending a driving pulse to the motor through the motor interface, so that the motor drives the rotating part of the rotary valve to rotate along a first direction or a second direction opposite to the first direction;
when the origin homing signal is valid and the port alignment signal is valid, the current gating port position is considered to be the origin position;
And controlling the rotary valve to rotate 360 degrees along the first direction or a second direction opposite to the first direction, judging whether all the selected ports can be normally used according to the effective times of the port alignment signals, and if so, feeding back a homing signal to the host through the host interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211651485.1A CN118224364A (en) | 2022-12-21 | 2022-12-21 | Step driver, rotary valve control system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211651485.1A CN118224364A (en) | 2022-12-21 | 2022-12-21 | Step driver, rotary valve control system and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118224364A true CN118224364A (en) | 2024-06-21 |
Family
ID=91499609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211651485.1A Pending CN118224364A (en) | 2022-12-21 | 2022-12-21 | Step driver, rotary valve control system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118224364A (en) |
-
2022
- 2022-12-21 CN CN202211651485.1A patent/CN118224364A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104245242B (en) | For controlling the control device that joint of robot rotates | |
| US6898483B2 (en) | Driver board control system for modular conveyor with address-based network for inter-conveyer communication | |
| US6845276B2 (en) | Multiple axis modular controller and method of operating same | |
| CN112824059B (en) | Encoder data conversion method, device and equipment | |
| CN112498865B (en) | Method and system for cutting material | |
| US20240059305A1 (en) | Autonomous vehicle interface using bus impedance to identify control units, and associated systems and methods | |
| CN219493213U (en) | Step driver and rotary valve control system | |
| CN118224364A (en) | Step driver, rotary valve control system and control method thereof | |
| US4513234A (en) | Method and apparatus for controlling zero-point return of a movable element | |
| CN105403190A (en) | Displacement detection system of stepping machine | |
| JP2983462B2 (en) | Robot origin return device | |
| US7437209B2 (en) | Modular control system for a glass forming machine | |
| JP5472865B2 (en) | Driver setting operation method for stepping motor | |
| WO2023165075A1 (en) | Mechanical limitation-based automatic slave controller addressing method | |
| CN111045392A (en) | Servo motion control card interface circuit based on FPGA | |
| JPH08233599A (en) | Multiplex transmission encoder | |
| KR102395546B1 (en) | Control system for drum-type tool magazine and control method thereof | |
| US7868781B2 (en) | Encoder | |
| CN103699054B (en) | The quick accurately predicting localization method of industry straight-line motion mechanism and positioning system | |
| CN103580554A (en) | Method for controlling servo motor by secondary controller, secondary controller and system | |
| CN110499574B (en) | Electronic transverse moving controller and control method | |
| CN108170102B (en) | Motion control system | |
| CN111208849A (en) | High-precision positioning control system and method based on motor speed reducer drive | |
| JP3183427B2 (en) | Motor abnormal state storage device and motor with encoder | |
| US8874401B2 (en) | Process and device for the parameterization of measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination |