CN218825229U - Feedforward controller for controlling opening of crystal valve - Google Patents

Abstract

The utility model discloses a feedforward controller of control crystal valve aperture, including quick-witted case to and the singlechip of setting at quick-witted incasement, still include: the digital-to-analog conversion chip is in communication connection with the single chip microcomputer, and 4 waveform output channels are arranged on the digital-to-analog conversion chip; the storage module is in communication connection with the single chip microcomputer; the machine case is provided with a channel switch for switching the on-off state of each output channel; each output channel is in communication connection with a corresponding crystal valve through a corresponding valve power supply. The utility model provides a feedforward controller of control crystal valve aperture provides a plurality of output passageways, can control the aperture of a plurality of crystal valves, has better adaptability, the channel switch that all sets up a hardware architecture on each output passageway of feedforward controller simultaneously leads to controller output waveform for preventing to trigger by mistake for only when the hardware switch is opened, output signal just can be exported the valve power and enlargies the output, the safety in utilization of equipment has been guaranteed.

Description

Feedforward controller for controlling opening of crystal valve

Technical Field

The utility model relates to a valve control field. More specifically, the utility model relates to a feedforward controller of control crystal valve opening degree that is used for the working gas air input real-time control on the nuclear fusion device.

Background

In valve control, a feedforward controller can be usually used to control the opening of a crystal valve to control the amount of input gas, and thus to control the gas supply and the gas amount of a specific device, but in the use process of the existing feedforward controller, the existing feedforward controller only simply adjusts the opening of the valve according to a signal after receiving the signal, for example, in patent application No. 201621104088.2 natural gas engine, the central control system includes a feedforward control module for performing feedforward control on a three-way valve, and a PID control module for performing PID control on the three-way valve. The central control system takes the opening of the waste gas supercharging flow control valve as a feed-forward control signal, so that the opening of the three-way valve can be accurately, timely and accurately controlled; when the structure of the feedforward controller is applied to a nuclear fusion device, the safety of the feedforward controller is a problem to be considered, so that each path of output of the feedforward controller needs to be subjected to false touch prevention treatment, and meanwhile, the existing feedforward controller can only realize one path of control generally and has poor adaptability.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve the above problems and/or disadvantages and to provide advantages which will be described later.

In order to realize the utility model of these objects and other advantages, the utility model provides a feedforward controller of control crystal valve opening is provided, including quick-witted case to and set up the singlechip at quick-witted incasement, still include:

the digital-to-analog conversion chip is in communication connection with the single chip microcomputer, and 4 waveform output channels are arranged on the digital-to-analog conversion chip;

the storage module is in communication connection with the single chip microcomputer;

the machine case is provided with a channel switch for switching the on-off state of each output channel;

each output channel is in communication connection with the corresponding crystal valve through the corresponding valve power supply.

Preferably, the channel switch is arranged on a front panel of the case, and a trigger switch, a display module, a mode selection switch and a manual response switch which are in communication connection with the single chip microcomputer are further arranged on the front panel of the case;

a BNC seat I matched with each output channel is arranged on the rear panel of the case;

a BNC seat II which is in communication connection with the single chip microcomputer and used for receiving an interrupt signal, a trigger signal, a central control instruction signal, an IP on-line detection signal and actual control voltage signal acquisition and a BNC seat III for finishing response signal output are arranged on the rear panel of the case;

the BNC seat II and the BNC seat III which receive the trigger signal and the interrupt signal and the central control instruction signal are connected with the single chip microcomputer through the optical coupling isolation module.

Preferably, the system further comprises an upper computer and a middle control computer which are in communication connection with the feedforward controller;

the single chip microcomputer is in communication connection with an upper computer through a network interface on a rear panel of the case;

the single chip microcomputer is in communication connection with the central control machine through a BNC seat II and a BNC seat III which receive the interrupt signal and the central control instruction signal.

The utility model discloses at least, include following beneficial effect: the utility model discloses a feedforward controller provides a plurality of output passageways, can control the aperture of a plurality of crystal valves, better adaptability has, the channel switch that all sets up a hardware architecture on each output passageway of feedforward controller simultaneously leads to controller output waveform for preventing the spurious triggering, only when hardware switch opens, output signal just can export the valve power and enlarge the output, accomplish the aperture control to the crystal valve, the safety in utilization of equipment under the special application scene has been guaranteed.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic block diagram of a feedforward controller for controlling the opening of a crystal valve according to an embodiment of the present invention;

fig. 2 is a schematic block diagram of the cooperation of a feedforward controller for controlling the opening of a transistor valve and an upper computer according to an embodiment of the present invention;

fig. 3 is a schematic view of the front panel of the chassis of the present invention;

fig. 4 is a schematic view of the rear panel of the chassis of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

It should be noted that in the description of the present invention, the terms indicating the orientation or the positional relationship are based on the orientation or the positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, unless otherwise specifically stated or limited, the terms "mounted," "provided," "sleeved/connected," "connected," and the like are to be understood broadly, and for example, "connected," may be a fixed connection, a detachable connection, or an integrated connection, may be a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a connection between two elements.

Further, in the present disclosure, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature in direct contact with the first and second features, or in indirect contact with the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example 1

A feedforward controller for controlling the opening of a crystal valve is shown in figures 1-4, and comprises a case 1 and a singlechip 2 arranged in the case, and further comprises:

the core of the feedforward controller in the structure is an STM32H7 series singlechip which is used for driving the digital-to-analog conversion chip (AD 5754) to output corresponding control waveforms, and the precision control is realized through the 16-bit digital-to-analog conversion chip, so that the output precision of the feedforward controller is ensured to meet the requirement;

the storage module 4 is in communication connection with the single chip microcomputer and is configured to comprise an internal memory (SDRAM) and a flash memory (W25Q 128) which is used for storing a waveform file for controlling the opening degree of the transistor valve and can be used for buffering so as to support faster output frequency;

the intelligent controller comprises a case, a controller, a valve power supply, a channel switch (or hardware switch) 5, a hardware switch and a power supply, wherein the case is provided with the channel switch (or hardware switch) 5 for switching the on-off state of each output channel;

each output channel is communicatively connected to a corresponding crystal valve 7 via a corresponding valve power supply 6.

The working principle is as follows: in practical application, the single chip microcomputer performs digital-to-analog conversion on a control signal of the single chip microcomputer by using a digital-to-analog conversion chip based on a control waveform stored in the memory, and when a hardware switch is turned on, the control signal is output to a valve power supply through a corresponding waveform output passage to be amplified and output, so that the opening degree of the crystal valve is controlled.

Example 2

Embodiment 2 is a preferred embodiment of the present invention, and the specific structure is shown in fig. 3 to 4, which discloses the following improvements on the basis of embodiment 1:

the channel switch sets up on the front panel of quick-witted case, still be provided with trigger switch 8, display module 9, mode selection switch 10, the manual answer switch 11 with singlechip communication connection on the quick-witted case front panel, in this kind of structure, display module is the touch-sensitive screen for show controller parameter and set up controller parameter, and the trigger development on the quick-witted case front panel: for manual triggering signals (one trigger per press), the feed forward controller works in the local mode effectively; simultaneously triggering a self-resetting key switch, automatically resetting the key when the key is released after being pressed, generating a 5V voltage pulse by the key at the next time, and controlling signal output by the singlechip through detecting the trigger pulse;

a BNC seat I12 matched with each output channel is arranged on the rear panel of the case;

a BNC seat II 13 which is in communication connection with the single chip microcomputer and used for receiving an interrupt signal, a trigger signal, a central control instruction signal, an IP on-line detection signal and actual control voltage signal acquisition and a BNC seat III 14 used for finishing response signal output are arranged on the rear panel of the case;

the BNC seat II and the BNC seat III which are used for triggering signals, receiving interrupt signals and central control instruction signals are connected with the single chip microcomputer through the optical coupling isolation module 15.

The working principle is as follows: the chassis with the time delay trigger is used for the chassis, and the front panel comprises a touch screen, a trigger button (also called a trigger switch), a channel switch, an instruction indicator light, a mode selection switch, a manual response switch and a power switch 20. The rear panel contains BNC seat, 220V power socket, RJ45 net twine socket of four ways output, interrupt signal input, trigger signal input, well accuse command signal input, IP on-line measuring signal input, answer signal output, actual control voltage gathers input interface, all adopts BNC seat, the trigger signal of quick-witted case rear panel for the connection: if the equipment works in a remote mode, the working mode is switched by a trigger signal given by a central controller, and if the equipment works in a local mode, a user manually presses a front panel trigger button of a controller to trigger;

the controller can work in two working modes of supplementary air supply and main air supply, and the conditions for triggering pulse output under different working modes are different.

When the controller works in a main air supply mode, when the trigger signal is detected to be effective, within a pre-air supply time period, the controller does not output a pulse signal if an instruction signal, an IP on-line detection signal and a manual response signal are all effective; after the pre-air feeding is finished, the three signals are required to be effective, and an interrupt signal is also required to be detected, if the interrupt signal is ineffective, the subsequent pulse signals are output in sequence, and if the interrupt signal is effective, a 0 reset output signal is immediately written into the AD chip, and the pulse signal output is stopped.

When the controller works in a supplementary air supply mode, when the trigger of the signal is detected to be effective, the pulse signal output is started only when the detection instruction signal, the IP on-line detection signal and the manual response signal are simultaneously effective and the interrupt signal is ineffective, and when the interrupt signal is detected to be effective, the 0 reset output signal is immediately written into the AD chip, and the pulse signal output is stopped.

When the upper computer works in a local mode, the controller must work in a supplementary air supply mode, under the state, the pulse signal output of the controller is not concerned with a central control trigger signal, a central control instruction signal, a central control IP online detection signal and an interrupt signal, the upper computer is in a state to be triggered after waveform data are issued, when the manual trigger signal of the controller is detected or the trigger instruction of the upper computer is received, the pulse signal output is immediately started, and the signal output is stopped until the complete waveform data are output.

In order to ensure that the output signal frequency is refreshed once in 1ms, the pulse signal output of the controller adopts a timer to output, when all the signal output enabling conditions are effective, the timer with the timing of 1ms is started, and the output data is refreshed once every 1 ms.

The response signal provided by the controller to the central control requires that the central control command signal and the manual response signal are simultaneously effective.

Example 3

Embodiment 3 is a preferred embodiment of the present invention, and the specific structure thereof is as shown in fig. 2, which discloses the following improvements on the basis of embodiment 1:

the system also comprises an upper computer 16 and a central control machine (also called as a central control system) 17 which are in communication connection with the feedforward controller;

the single chip microcomputer is in communication connection with an upper computer through a network interface (LAN 8720) 18 on a rear panel of the case, and receives an opening control waveform of the crystal valve from the upper computer through the network interface, wherein the waveform change time represents the control time, and the waveform amplitude represents the control quantity;

the single chip microcomputer is in communication connection with the central control machine through a BNC seat II and a BNC seat III which receive the interrupt signal and the central control instruction signal.

The working principle is as follows: the feed-forward controller realizes the supplement of the vacuum chamber gas by controlling the opening of the crystal valve, the upper computer reads and downloads a pulse waveform data file configured in the FTP server 19, the industrial personal computer is in communication connection with the central control system to receive a waveform data refreshing mark sent by the central control system, the upper computer sends the downloaded pulse waveform data file to the feed-forward controller through the network interface, and the feed-forward controller enters a pulse output state to be triggered after receiving the waveform file sent by the upper computer.

The feedforward controller outputs pulse waveform data according to a trigger signal output by the central control system in real time, and the pulse waveform data is amplified by the valve power supply and then output to the controlled crystal valve to realize the control of the opening of the crystal valve.

The above embodiments are merely illustrative of a preferred embodiment, but not limiting. When the utility model is implemented, the proper replacement and/or modification can be carried out according to the requirements of users.

The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the applications listed in the specification and the examples. It can be applicable to all kinds of being fit for the utility model's field completely. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims (3)

1. The utility model provides a control crystal valve opening's feedforward controller, includes quick-witted case to and the singlechip of setting in quick-witted case, its characterized in that still includes:

the digital-to-analog conversion chip is in communication connection with the single chip microcomputer, and 4 waveform output channels are arranged on the digital-to-analog conversion chip;

the storage module is in communication connection with the single chip microcomputer;

the machine case is provided with a channel switch for switching the on-off state of each output channel;

each output channel is in communication connection with the corresponding crystal valve through the corresponding valve power supply.

2. A feedforward controller for controlling the opening of a crystal valve according to claim 1, wherein the channel switch is disposed on a front panel of a chassis, and a trigger switch, a display module, a mode selection switch, and a manual response switch, which are communicatively connected to a single chip microcomputer, are further disposed on the front panel of the chassis;

a BNC seat I matched with each output channel is arranged on the rear panel of the case;

a BNC seat II which is in communication connection with the single chip microcomputer and used for receiving an interrupt signal, a trigger signal, a central control instruction signal, an IP on-line detection signal and actual control voltage signal acquisition and a BNC seat III for finishing response signal output are arranged on the rear panel of the case;

the BNC seats II and the BNC seats III which receive the interrupt signal and the central control instruction signal are connected with the single chip microcomputer through the optical coupling isolation module.

3. A feedforward controller for controlling the opening of a crystal valve as in claim 1, further including an upper computer and a central control computer communicatively coupled to the feedforward controller;

the single chip microcomputer is in communication connection with an upper computer through a network interface on a rear panel of the case;

the single chip microcomputer is in communication connection with the central control machine through a BNC seat II and a BNC seat III which receive the interrupt signal and the central control instruction signal.

Images