CN102954068A - Servo energy-saving electro-hydraulic power system - Google Patents
Servo energy-saving electro-hydraulic power system Download PDFInfo
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- CN102954068A CN102954068A CN2011102450714A CN201110245071A CN102954068A CN 102954068 A CN102954068 A CN 102954068A CN 2011102450714 A CN2011102450714 A CN 2011102450714A CN 201110245071 A CN201110245071 A CN 201110245071A CN 102954068 A CN102954068 A CN 102954068A
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Abstract
The invention discloses a servo energy-saving electro-hydraulic power system which comprises a control unit. The control unit comprises a program control element, an action execution element and an action control element, wherein the program control element is connected with a digital control module, the digital control module is connected with a servo motor driving module, the servo motor driving module is connected with an alternating-current permanent magnet synchronous motor provided with a position sensor, the alternating-current permanent magnet synchronous motor is connected with a fixed-displacement pump, and the action control element is connected with the fixed-displacement pump by a pressure sensor. The servo energy-saving electro-hydraulic power system has the advantages that characteristics of high efficacy and high corresponding speed of a servo motor are utilized, so that energy consumption is greatly reduced, and the movement efficiency is greatly improved; the servo energy-saving electro-hydraulic power system is provided with the pressure detection sensor and a rotation speed detection sensor, and accordingly required pressure and required flux can be precisely controlled; and the system is wide in applicability, and effects of saving energy and improving the production efficiency and the production precision can be achieved after the servo energy-saving electro-hydraulic power system is applied.
Description
Technical field
The present invention relates to a kind of hydraulic power system, be specifically related to a kind of servo energy-saving electric hydraulic power system.
Background technique
The hydraulic power system that conventional hydraulic equipment adopts, general binding by induction asynchronous motor and quantitative oil pump namely releases pressure and the flow that unnecessary flow is controlled hydraulic pressure in flow overflow mode.So, not only cause the very large waste in cost aspect, and power transmission mode is lower because of the effect of induction asynchronous motor, it is not enough and cause the highly energy-consuming of conventional hydraulic equipment, low precision and poor efficiency that the mode energy consumption of relief valve control hydraulic pressure reaches greatly precision.
Summary of the invention
For improving the shortcoming of conventional hydraulic power system, the present invention aims to provide a kind of servo energy-saving electric hydraulic power system, this invention is connected high moment of torsion AC permanent-magnet synchronous servo motor and high pressure quantitative oil pump, the power supply driver that the power electronics conversion is strengthened in collocation drives actuating motor, and does efficient output control with high performance numerical digit control module for oil pressure unit action executing required pressure and speed.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions: a kind of servo energy-saving electric hydraulic power system, comprise a control unit, affiliated control unit is installed on the hydraulic equipment lathe, described control unit comprises sequence control element, action executing element and action control element, and described sequence control element connects the numerical digit control module, and it is sent pressure instruction signal and flow instruction signal; Described numerical digit control module connects the driven by servomotor module, and described driven by servomotor module connection one is provided with the AC permanent magnet synchronous motor of position transducer, and it is carried out moment of torsion control and rotating speed control; Described AC permanent magnet synchronous motor connects quantitative oil pump, and described action control element connects described quantitative oil pump by pressure transducer, and it is carried out Output pressure and flow output.
Further, described position transducer and described numerical digit control module are electrically connected, and it is carried out the flux signal feedback.
Further, described pressure transducer and described numerical digit control module are electrically connected, and it is carried out the pressure signal feedback.
Principle of the present invention is as follows: servo energy-saving electric hydraulic power system is the new hydraulic power transmission system of a cover that AC permanent-magnet synchronous servo motor, high pressure quantitative oil pump, high-performance numerical digit control module, driven by servomotor module, pressure detection sensor, rotating speed detection sensor and connecting member set are formed.AC permanent-magnet synchronous servo motor and quantitative oil pump are connected, and form hydraulic equipment and move the output maincenter of required oil mass.
Described AC permanent-magnet synchronous servo motor has the characteristic of high rotating speed, high-effect and high corresponding speed, and according to the demand of hydraulic equipment, adopts the design of high moment of torsion output, can be in response to the output demand of high pressure action.
Described high-performance numerical digit control module, it is the computing center of whole system, can do high performance vector control, Torque Control and rotating speed control to actuating motor, and has the actuating motor computing of high precision and special application controls computing organically combines at software, can do perfect formula for the program of distinct device and power demand and write, realize efficiently, accurately perfect control.
Described driven by servomotor module is the high power electronics converting system of strengthening, moment and rotary speed signal that reception is passed on by the numerical digit module, actuating motor is done precisely certain motion control, integrated and the modular design of intelligence, volume is little but possess efficient power transfer, and is fit to various severe environment applications.
Described pressure detection sensor, to be installed on the oil pump oil outlet to a device between the device action hydraulic equipment, the hydraulic oil actual pressure of can detecting being exported by the servo motor transmission oil pump converts analog signal to and passes fast numerical digit module arithmetic center back and do the computing of contrast difference.
Described rotating speed detection sensor is installed on actuating motor inside, detects accurately motor movement position amount and is converted into analog signal, passes rapidly numerical digit module arithmetic center back and does the computing of contrast difference.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention links the high pressure quantitative oil pump as the hydraulic pressure output maincenter of hydraulic equipment take AC permanent-magnet synchronous servo motor, replacing heritage answers asynchronous motor to link quantitative oil pump and the old hydraulic power transmission that generates pressure and speed through inflow-rate of water turbine overflow mode, utilize the characteristic of the high-effect and high corresponding speed of actuating motor, greatly reduced energy consumption and promoted sport efficiency.
2, pressure detection sensor and rotating speed detection sensor have been installed, the digit arithmetic center is detected rapidly and fed back to the pressure of reality output and flow do the computing of contrast difference, by the numerical digit module difference conversion and control signal is conducted to actuating motor via driver module again and do compensation correction, form the circuit controls of a closed loop, can do accurate control to required pressure and flow.
3, this system suitability is wide, such as has the hydraulic equipment of pressure conversion and rate conversion all can use, and can reach energy-conservation, improving production efficiency after the utilization and improve the effect of production precision.
Description of drawings
Accompanying drawing described herein is used for carrying
Further understanding, consist of the application's a part, illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 shows structural principle schematic representation of the present invention.
Number in the figure explanation: 1, control unit, 2, sequence control element, 3, the action executing element, 4, the action control element, 5, numerical digit control module, 6, the driven by servomotor module, 7, position transducer, 8, AC permanent magnet synchronous motor, 9, quantitative oil pump, 10, pressure transducer.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Referring to shown in Figure 1, a kind of servo energy-saving electric hydraulic power system, comprise a control unit 1, described control unit 1 is installed on the hydraulic equipment lathe, described control unit 1 comprises sequence control element 2, action executing element 3 and action control element 4, described sequence control element 2 connects numerical digit control module 5, and it is sent pressure instruction signal and flow instruction signal; Described numerical digit control module 5 connects driven by servomotor module 6, and described driven by servomotor module 6 connections one are provided with the AC permanent magnet synchronous motor 8 of position transducer 7, and it is carried out moment of torsion control and rotating speed control; Described AC permanent magnet synchronous motor 8 connects quantitative oil pump 9, and described action control element 4 connects described quantitative oil pump 9 by pressure transducer 10, and it is carried out Output pressure and flow output.
Further, described position transducer 7 is communicated by letter with described numerical digit control module 5, and it is carried out the flux signal feedback.
Further, described pressure transducer 10 is communicated by letter with described numerical digit control module 5 it is carried out the pressure signal feedback.
Claims (3)
1. servo energy-saving electric hydraulic power system, it is characterized in that: comprise a control unit (1), described control unit (1) comprises sequence control element (2), action executing element (3) and action control element (4), described sequence control element (2) connects numerical digit control module (5), described numerical digit control module (5) connects driven by servomotor module (6), described driven by servomotor module (6) connection one is provided with the AC permanent magnet synchronous motor (8) of position transducer (7), described AC permanent magnet synchronous motor (8) connects quantitative oil pump (9), and described action control element (4) connects described quantitative oil pump (9) by pressure transducer (10).
2. servo energy-saving electric hydraulic power system according to claim 1 is characterized in that: described position transducer (7) and described numerical digit control module (5) electric connection.
3. servo energy-saving electric hydraulic power system according to claim 1 is characterized in that: described pressure transducer (10) and described numerical digit control module (5) electric connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011102450714A CN102954068A (en) | 2011-08-25 | 2011-08-25 | Servo energy-saving electro-hydraulic power system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102450714A CN102954068A (en) | 2011-08-25 | 2011-08-25 | Servo energy-saving electro-hydraulic power system |
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| CN102954068A true CN102954068A (en) | 2013-03-06 |
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| CN2011102450714A Pending CN102954068A (en) | 2011-08-25 | 2011-08-25 | Servo energy-saving electro-hydraulic power system |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6089849A (en) * | 1998-02-27 | 2000-07-18 | Van Dorn Demag Corporation | Hybrid injection molding machine |
| CN101367262A (en) * | 2008-08-22 | 2009-02-18 | 昌盛达机械(浙江)有限公司 | Servo energy conservation power system of hollow molding machine |
| CN201300540Y (en) * | 2008-11-14 | 2009-09-02 | 苏州龙盛测试设备有限公司 | Automatic constant stress and energy-saving type pressure testing machine |
| CN201415463Y (en) * | 2009-05-21 | 2010-03-03 | 宁波弘讯科技有限公司 | Energy-saving high-precision gas-electric hybrid injection molding machine |
| CN201432288Y (en) * | 2009-07-20 | 2010-03-31 | 宝元数控精密股份有限公司 | Hydraulic energy-saving device of machine tool |
| CN201520045U (en) * | 2009-09-15 | 2010-07-07 | 宁波弘讯科技有限公司 | Energy-saving control system for oil-electric compound injection molding machine |
| CN101865190A (en) * | 2010-06-29 | 2010-10-20 | 哈尔滨工业大学 | Position and flow double-close-loop direct-drive volume control electro-hydraulic servo system |
| CN101900153A (en) * | 2010-08-23 | 2010-12-01 | 西安建筑科技大学 | Energy-efficient hydraulic power supply driven by permanent magnet servo motor |
| CN202187980U (en) * | 2011-08-25 | 2012-04-11 | 苏州晟世能源管理有限公司 | Servo energy-saving electric hydraulic power system |
-
2011
- 2011-08-25 CN CN2011102450714A patent/CN102954068A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6089849A (en) * | 1998-02-27 | 2000-07-18 | Van Dorn Demag Corporation | Hybrid injection molding machine |
| CN101367262A (en) * | 2008-08-22 | 2009-02-18 | 昌盛达机械(浙江)有限公司 | Servo energy conservation power system of hollow molding machine |
| CN201300540Y (en) * | 2008-11-14 | 2009-09-02 | 苏州龙盛测试设备有限公司 | Automatic constant stress and energy-saving type pressure testing machine |
| CN201415463Y (en) * | 2009-05-21 | 2010-03-03 | 宁波弘讯科技有限公司 | Energy-saving high-precision gas-electric hybrid injection molding machine |
| CN201432288Y (en) * | 2009-07-20 | 2010-03-31 | 宝元数控精密股份有限公司 | Hydraulic energy-saving device of machine tool |
| CN201520045U (en) * | 2009-09-15 | 2010-07-07 | 宁波弘讯科技有限公司 | Energy-saving control system for oil-electric compound injection molding machine |
| CN101865190A (en) * | 2010-06-29 | 2010-10-20 | 哈尔滨工业大学 | Position and flow double-close-loop direct-drive volume control electro-hydraulic servo system |
| CN101900153A (en) * | 2010-08-23 | 2010-12-01 | 西安建筑科技大学 | Energy-efficient hydraulic power supply driven by permanent magnet servo motor |
| CN202187980U (en) * | 2011-08-25 | 2012-04-11 | 苏州晟世能源管理有限公司 | Servo energy-saving electric hydraulic power system |
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Application publication date: 20130306 |