CN201168594Y - Six-side top superhard material hydraulic press power adjust control system - Google Patents
Six-side top superhard material hydraulic press power adjust control system Download PDFInfo
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- CN201168594Y CN201168594Y CNU2008201040383U CN200820104038U CN201168594Y CN 201168594 Y CN201168594 Y CN 201168594Y CN U2008201040383 U CNU2008201040383 U CN U2008201040383U CN 200820104038 U CN200820104038 U CN 200820104038U CN 201168594 Y CN201168594 Y CN 201168594Y
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Abstract
The utility model discloses a power regulating control system of six side top superhard material liquid pressing machine, which is composed of a microprocessor, a silicon controlled voltage regulator connected to the primary side of a heating transformer, and a hall sensor. A heating quantity set value is given by a host computer or other input units or memory data, control signals are connected with the silicon controlled voltage regulator by a photoelectric isolated circuit, and the microprocessor is provided with a signal processing module, a fuzzy control module and a PI control module inside. The fuzzy control module is stored with fuzzy control rules used for regulating PI parameters. The signal processing module carries out rectification and wave filtration on instantaneous values of heating electric current, voltage and power, and current heating power average value is calculated compared with the set value. The fuzzy control module carries out the PI parameters, obtains a silicon controlled control angle of next time, and stably controls the heating power of the transformer keeping at the set value. The power regulating control system of the six side top superhard material liquid pressing machine has the advantages that the electric measurement is accurate, the inertia and the lag are small, the heating power can be regulated in time when the network voltage fluctuation is big, the control precision is high, and the quality of composite superhard materials is ensured efficiently.
Description
(1) technical field
The utility model relates to cubic apparatus superhard material hydraulic press control system, is specially a kind of cubic apparatus superhard material hydraulic press Power Regulation control system.
(2) background technology
Cubic apparatus superhard material hydraulic press is by low-voltage and high-current in addition on two relative tops hammers, the electric current synthetic piece of flowing through, and synthetic piece reaches heating purposes because of the resistance heating of inside.According to thermodynamics and high-pressure physics, can calculate the pressure match curve in time of formulating heating power and hydraulic system by superhard material growth synthesis mechanism.For synthetic piece temperature inside of control and pressure are controlled entire synthesis process easily, the method of present commonplace employing is to control by the system pressure of the heating power of measurements and calculations heating system and hydraulic system and to it, can control synthetic piece internal temperature and pressure indirectly and concern over time, make it to meet synthetic material temperature, pressure match curve.
The heating power control system of present widely used cubic apparatus superhard material hydraulic press is promptly according to above-mentioned principle design.This system generally constitutes master controller with single-chip microcomputer, Programmable Logic Controller or other device, adopts D.C mutual-inductor to detect the voltage and current signal on the former limit of heating transformer and convert mean value to and is for further processing.These signals compare with the heating process parameter that prestores, and after certain control algolithm is handled, control the output voltage and the output current of heating transformer by control silicon controlled pilot angle, thereby control the heating power of synthetic piece.The persevering average voltage of regulative mode, permanent effective voltage, permanent average current, permanent effective current and five kinds of modes of permanent power.The general analog or digital PID control method that adopts.In the practical application, pure analog circuit power regulating eqiupment is still quite general.This control system is simple in structure, and reliable operation is widely used.
But theory analysis and on-the-spot test result show that the control accuracy of the heating power control system of above-mentioned cubic apparatus superhard material hydraulic press is not high, and especially the external power grid voltage pulsation is very big to the influence of heating power control accuracy.Because there are various large power-consuming equipments of working off and in the production scene, voltage ripple of power network even may be up to more than 20%.And the D.C mutual-inductor response speed is slow, accuracy of detection is not high, and signal processing circuit inertia is big, and therefore, the heating control precision of synthetic piece is difficult to guarantee.In addition, synthesizing superhard material product kind is more and more at present, and the assembling mode of synthetic piece is varied, will face different loads with a kind of heating control system, and temperature control precision also is affected.
Synthetic deblocking temperature control accuracy has been considered to influence the primary factor of diamond quality and output.Therefore, need badly and improve cubic apparatus superhard material hydraulic press Power Regulation control system, to improve its control accuracy.
(3) utility model content
The purpose of this utility model is a kind of cubic apparatus superhard material hydraulic press Power Regulation control system of design, real-time accurate detects heating voltage and current signal, change at electrical network timely and effectively heating power is controlled, improve the control accuracy of synthetic piece heating power.
The cubic apparatus superhard material hydraulic press Power Regulation control system of the utility model design comprises control centre, silicon-controlled voltage regulation device, electric current and voltage detecting circuit, transformer and other relevant circuit.The former limit of transformer through the silicon-controlled voltage regulation device connect AC power, secondary is bonded into piece, control centre of the present utility model is a microprocessor, its control port is connected with the silicon-controlled voltage regulation device through photoelectric isolating driving circuit, regulate its pilot angle, the silicon-controlled voltage regulation device is connected in the former limit circuit of synthetic piece heating transformer, the voltage on the former limit of control transformer; The electric current that joins with the former limit of transformer and electric current, the voltage sensor of voltage detecting circuit are respectively Hall current sensor and Hall voltage sensor, the electric current of current detection circuit and voltage detecting circuit, voltage signal output end connect multiplier, insert microprocessor simultaneously, and multiplier inserts microprocessor.Store the production technology data of heating power and time relationship in the microprocessor, also have digital signal processing module, fuzzy control model and proportional plus integral control module.
Microprocessor has the communication interface that links with host computer, and/or analog output interface circuit, and/or the set amount input interface, can with information such as host computer or the direct exchanging control data of other I/O unit, or direct input power setting value.
The control method of the cubic apparatus superhard material hydraulic press Power Regulation control system of the utility model design is as follows:
Electric current and voltage detecting circuit are surveyed the instantaneous value of the current/voltage on the former limit of transformer and are sent into microprocessor and multiplier, by the product of four-quadrant analog multiplier calculating voltage and electric current, the instantaneous value of acquisition heating power, the instantaneous value of heating power is also sent into microprocessor processes.Precision and the real-time that has guaranteed heating current, voltage and power calculated in measurement of the present utility model.
The signal processing module of microprocessor is to the instantaneous value rectification of heating current, voltage and power, carry out mean filter then, obtain the rectification average, the conversion relation of virtual value routinely and average obtains the virtual value of current accurately heating current, heating voltage again.This signal processing method effectively reduces the inertia and the hysteresis of traditional measurement method, has improved the real-time of signal, helps improving the dynamic characteristic of control system.Particularly this average heating power measuring method has guaranteed the certainty of measurement of effective heating power.
The signal processing module of microprocessor calculates current set-point poor of above-mentioned gained heating power mean value and heating power, obtains error e, again e is carried out differential calculation, obtains error rate ec.
The fuzzy control model of microprocessor stores the fuzzy control rule of regulating the proportional integral parameter.The fuzzy control model of microprocessor is an input variable with error e and error rate ec, asks for proportionality coefficient K by fuzzy control rule
P0With integral coefficient K
I0Online correction amount K
P, Δ K
IWith gained Δ K
P, Δ K
ITo K
P0And K
I0Carry out online correction, correction result is current K
PAnd K
IWith current K
PAnd K
ISend into next moment SCR control angle of proportional plus integral control module accurate Calculation, microprocessor is sent into high-power silicon controlled rectifier pressure regulator with the pilot angle signal through photoelectric isolating driving circuit by output port, it is carried out phase shift triggers, the voltage on the former limit of control heating transformer obtains stable low-voltage, high-current heating power at the transformer secondary.
Microprocessor has RS232 communication interface and set amount input interface, analog output interface circuit, is connected with host computer and/or other I/O unit, effectively gets in touch with, manages and control.
The advantage of the utility model cubic apparatus superhard material hydraulic press Power Regulation control system is: the Hall element that 1, has adopted accurate measurement electric weight, and the signal processing method that converts of the mean filter of very little alternation of inertia lag and average virtual value, make the signal that is obtained can reflect the variation of line voltage preferably in real time; 2, fuzzy control model carries out the fuzzy control adjusting according to the parameter of statistical value Comparative Examples integral controller, tackle the variation of line voltage in time by real-time heating power signal, voltage to the former limit of transformer is controlled in real time, reach the setting value of heating power, and overshoot can not appear, effectively improve the quality of synthesizing superhard material synthetic diamond single crystal and composite sheet thereof (PDC); 3, native system provides the good communication interface, and host computer can be set the heating power parameter of microprocessor according to actual conditions, is convenient to make up the cubic apparatus superhard material hydraulic press system that adaptability is strong, integration is high.
(4) description of drawings
Fig. 1 is this cubic apparatus superhard material hydraulic press Power Regulation control system embodiment electrical block diagram; The figure internal label is:
AC power 1, silicon-controlled voltage regulation device 2, transformer 3, synthetic piece 4, multiplier 5, microprocessor 6;
Fig. 2 is the fuzzy control model structural representation of this cubic apparatus superhard material hydraulic press Power Regulation control system embodiment;
Fig. 3 is the embodiment of this cubic apparatus superhard material hydraulic press Power Regulation control system and the heating power response curve comparison diagram of common pid Power Regulation control system.Among the figure, 2. being the heating power response curve of present embodiment, 1. is the heating power response curve of conventional PID control.
(5) specific embodiment
This cubic apparatus superhard material hydraulic press Power Regulation control system embodiment circuit structure as shown in Figure 1, heating transformer 3 secondary are bonded into piece 4, silicon-controlled voltage regulation device 2 is connected in the circuit of the former limit of heating transformer 3 and AC power 1, the current detection circuit and the voltage detecting circuit that are connected to Hall current sensor and Hall voltage sensor respectively are connected on the transformer 3 former limit circuit, its output signal inserts multiplier 5, and inserts microprocessor 6 as control centre with the output of multiplier 5.Microprocessor 6 joins through photoelectric isolating circuit and silicon-controlled voltage regulation device 2.Store the process data that heating power and time relationship are set in the microprocessor 6, also have signal processing module, fuzzy control model and proportional plus integral control module.
Microprocessor 6 is furnished with RS232 communication interface and analog output interface circuit, set amount input interface, for linking with host computer and/or other I/O unit, effectively gets in touch with, manages and control.
As shown in Figure 2, the schematic diagram that is connected with signal processing module, proportional plus integral control module for the fuzzy control model of microprocessor 6 (be called for short FLC, be Mamdani pattern fuzzy logic controller).Store the fuzzy control rule of regulating proportional integral parameter correction in the fuzzy control model.
Figure 3 shows that when supply voltage is the sinusoidal voltage of ± 20% changes in amplitude, this cubic apparatus superhard material hydraulic press Power Regulation control system embodiment and the control effect contrast figure of conventional PID Power Regulation control system in 2 second time, wherein 2. curve is depicted as present embodiment heating power response curve, and 1. curve is the heating power response curve of conventional PID Power Regulation control system.The heating power fluctuation of the control system of present embodiment is less than 0.05kW, and the fluctuation up 0.8kW of conventional PID Power Regulation control system heating power.As seen stability improves greatly.
Native system can be selected to determine current heating power setting value by the heating power of microprocessor 6 storage inside and time relationship process data, perhaps read the current heating power setting value that host computer gives by microprocessor 6 input interfaces, perhaps other input block is directly imported current heating power setting value by microprocessor 6 set amount input interfaces.
Claims (2)
1, a kind of cubic apparatus superhard material hydraulic press Power Regulation control system, comprise control centre, silicon-controlled voltage regulation device and current detection circuit and voltage detecting circuit, the former limit of transformer (3) through silicon-controlled voltage regulation device (2) connect AC power (1), secondary is bonded into piece (4), the holding wire of control centre is connected, controls the SCR control angle with silicon-controlled voltage regulation device (2), the signal of the current/voltage testing circuit that joins with the former limit of transformer (3) is sent into control centre, it is characterized in that:
Described control centre is microprocessor (6), microprocessor (6) joins through photoelectric isolating circuit and silicon-controlled voltage regulation device (2), the electric current that described current detection circuit and voltage detecting circuit connect, voltage sensor are Hall current sensor and Hall voltage sensor, the electric current of current detection circuit and voltage detecting circuit, voltage signal output end connect multiplier (5), insert microprocessor (6) simultaneously, and multiplier (5) inserts microprocessor (6); Signal processing module, fuzzy control model and proportional plus integral control module are arranged in the microprocessor (6).
2, cubic apparatus superhard material hydraulic press Power Regulation control system according to claim 1 is characterized in that:
Described microprocessor (6) is furnished with the RS232 communication interface, and/or analog output interface circuit, and/or the set amount input interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201040383U CN201168594Y (en) | 2008-01-16 | 2008-01-16 | Six-side top superhard material hydraulic press power adjust control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201040383U CN201168594Y (en) | 2008-01-16 | 2008-01-16 | Six-side top superhard material hydraulic press power adjust control system |
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| Publication Number | Publication Date |
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| CN201168594Y true CN201168594Y (en) | 2008-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201040383U Expired - Lifetime CN201168594Y (en) | 2008-01-16 | 2008-01-16 | Six-side top superhard material hydraulic press power adjust control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105629723A (en) * | 2016-03-30 | 2016-06-01 | 桂林电子科技大学 | Cubic press artificial diamond heating power adjustment system and control method thereof |
| CN113972899A (en) * | 2021-10-22 | 2022-01-25 | 中国科学院光电技术研究所 | Novel operational amplification compensation circuit for inertial link and control system thereof |
| CN117047985A (en) * | 2023-08-03 | 2023-11-14 | 广州捷克易自动化设备有限公司 | Hot runner voltage control system and control method |
-
2008
- 2008-01-16 CN CNU2008201040383U patent/CN201168594Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105629723A (en) * | 2016-03-30 | 2016-06-01 | 桂林电子科技大学 | Cubic press artificial diamond heating power adjustment system and control method thereof |
| CN105629723B (en) * | 2016-03-30 | 2019-08-27 | 桂林电子科技大学 | Cubic apparatus diamond heats power-regulating system and its control method |
| CN113972899A (en) * | 2021-10-22 | 2022-01-25 | 中国科学院光电技术研究所 | Novel operational amplification compensation circuit for inertial link and control system thereof |
| CN113972899B (en) * | 2021-10-22 | 2023-06-30 | 中国科学院光电技术研究所 | Novel operational amplification compensation circuit for inertial link and control system thereof |
| CN117047985A (en) * | 2023-08-03 | 2023-11-14 | 广州捷克易自动化设备有限公司 | Hot runner voltage control system and control method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20081224 Effective date of abandoning: 20080116 |