CN204468369U - A kind of electricity-liquid servo-control system of automatic cervical vertebra traction chair - Google Patents
A kind of electricity-liquid servo-control system of automatic cervical vertebra traction chair Download PDFInfo
- Publication number
- CN204468369U CN204468369U CN201520081775.6U CN201520081775U CN204468369U CN 204468369 U CN204468369 U CN 204468369U CN 201520081775 U CN201520081775 U CN 201520081775U CN 204468369 U CN204468369 U CN 204468369U
- Authority
- CN
- China
- Prior art keywords
- electricity
- servo
- pid controller
- cervical vertebra
- control system
- 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.)
- Expired - Fee Related
Links
Abstract
Electricity-liquid servo-control system of automatic cervical vertebra traction chair, comprises the PID controller for Electric signal processing, and the input of PID controller is connected with the pressure transducer for detecting pull strength and the input through keyboard module for setting pull strength maximum; The outfan of described PID controller is connected with the electricity-hydraulic servo for performing control instruction, and described electricity-hydraulic servo is arranged on hydraulic cylinder.Adopt PID controller and hydraulic power mechanism composition close loop negative feedback control system, SERVO CONTROL is carried out to pull strength, hydraulic control actuating unit can be carried out by the maximum setting pull strength and automatically perform, improve the automatic control performance of automatic cervical vertebra traction chair.
Description
Technical field
This utility model relates to automatic cervical vertebra traction chair technical field of servo control, specifically a kind of electricity-liquid servo-control system of automatic cervical vertebra traction chair.
Background technology
Cervical vertebra, as one of the mainstay of human body, has abundant blood vessel, plexus nervorum, ensures that uploading of the basic vital movement information of human body is assigned and nutrient delivery.In actual life, cervical spondylosis sickness rate is very high, especially the occupation disease of the crowd that bends over one's desk working for a long time such as teacher, computer work race.The whole nation about has 5,000 ten thousand to 15,000 ten thousand people to suffer from this disease according to statistics, and sickness rate is about 3.8%-17.6%, and the method for medically treating cervical spondylosis is at present a lot, can be divided into substantially for operative therapy and non-operative treatment.Cervical traction is important, a conventional effective therapy in cervical spondylosis non-operative treatment.
Present society there is many different types of cervical traction apparatuses, cervical stretching chair is exactly wherein a kind of, cervical stretching chair draws by applying external force to cervical vertebra, can dredging the meridian, recover cervical vertebra normal physiological curve and spinal column mechanical balance, adhering to for a long time using has the effect of effecting a permanent cure to cervical spondylosis.But the cervical stretching chair of existing market is main mainly with artificial applying pull strength, and need other people the auxiliary overall process that could realize traction treatment, and cannot each basic parameter be optimum accurately and stably, therapeutic effect be undesirable.And the whole-course automation of cervical traction is the effective ways solved the problem, wherein control system is the core of whole automatic cervical vertebra traction chair, its effect is equivalent to install a brain to cervical stretching chair, automatically controls the action of cervical stretching chair and ensure the optimum of each fundamental of traction with brain.Thus, the quality of control system performance determines the overall performance quality of automatic cervical vertebra traction chair.
Electricity-liquid servo-control system is a kind of close loop negative feedback control system be made up of electric signal process unit and hydraulic power mechanism, is the newer science and technology of of growing up in hydraulic drive and automatic control technology basis.Along with the improvement of the element function such as electricity-hydraulic servo, servopump, servo motor, the overall performance of electro-hydraulic seryo system is had been further upgraded.At present, electricity-liquid SERVO CONTROL occupies very important position in automatic field.Based on this, applicant starts with from the implementation process of cervical spondylosis traction, the key control unit of design automatic cervical vertebra traction chair: electricity-liquid servo-control system.
Summary of the invention
The utility model discloses a kind of electricity-liquid servo-control system of automatic cervical vertebra traction chair, adopt PID controller and hydraulic power mechanism composition close loop negative feedback control system, achieve the SERVO CONTROL to pull strength.
The technical solution adopted in the utility model: a kind of electricity-liquid servo-control system of automatic cervical vertebra traction chair, comprise the PID controller for Electric signal processing, the input of PID controller is connected with the pressure transducer for detecting pull strength and the input through keyboard module for setting pull strength maximum; The outfan of described PID controller is connected with the electricity-hydraulic servo for performing control instruction, and described electricity-hydraulic servo is arranged on hydraulic cylinder.
The beneficial effects of the utility model: adopt PID controller and hydraulic power mechanism composition close loop negative feedback control system, SERVO CONTROL is carried out to pull strength, hydraulic control actuating unit can be carried out by the maximum setting pull strength to automatically perform, improve the automatic control performance of automatic cervical vertebra traction chair.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is structural representation of the present utility model.
Detailed description of the invention
Be below detailed description of the invention of the present utility model, be now described further by reference to the accompanying drawings.
As shown in Figure 1 and Figure 2, a kind of electricity-liquid servo-control system of automatic cervical vertebra traction chair, comprise the PID controller for Electric signal processing, the input of PID controller is connected with the pressure transducer 1 for detecting pull strength and the input through keyboard module 2 for setting pull strength maximum; The outfan of described PID controller is connected with the electricity-hydraulic servo 3 for performing control instruction, and described electricity-hydraulic servo is arranged on hydraulic cylinder 6.
Wherein, pressure transducer 1 adopts the miniature press type sensor of WNK, and the outfan of described PID controller connects electricity-hydraulic servo 3 by servo amplifier 4; Described input through keyboard module 2 and pressure transducer 1 are connected the input of PID controller by a subtractor 5.
Its work process is: use keyboard input module 2 to set pull strength maximum Fmax=196N, when automatic cervical vertebra traction chair initially starts shooting work, electrohydraulic servo valve 3 is opened to the left, hydraulic cylinder piston rod rises, pull strength F suffered by liquid presses piston pole is detected by pressure transducer 1 and is converted to output voltage Uf, voltage constant value Ui corresponding when this voltage and maximum drawbar pull obtains the difference U of both voltages after subtractor computing, again after servo amplifier amplifies, input to electro-hydraulic servo valve coil with the form of electric current I.As pull strength F<Fmax=196N, △ U=Ui-Uf>0, I>0, electro-hydraulic servo valve core moves left, and displacement is with the size respective change of electric current I, Hydraulic power units continues to hydraulic cylinder fuel feeding, hydraulic oil promotes piston acting, makes draw bar increase, cervical traction, liquid presses piston pole constantly rises, until pressure transducer detects pressure F=Fmax.Now, △ U=Ui-Uf=0, I=0, electro-hydraulic servo valve core is in meta, motor stall, and Hydraulic power units stops to hydraulic cylinder fuel feeding, keeps pull strength F=Fmax.Liquid presses piston pole is stabilized in a certain height, keeps the traction state of maximum drawbar pull, reaches the object of continuous traction cervical vertebra; After traction terminates, opening pressure sensor output voltage, Uf=0, △ U=Ui-Uf reaches maximum, and I reaches maximum, and electro-hydraulic servo valve core moves right.Now, motor rotates again, and Hydraulic power units starts to hydraulic cylinder fuel feeding, and hydraulic cylinder piston rod declines fast; When dropping to the limit switch of automatic cervical vertebra traction chair, motor stall, Hydraulic power units stops to hydraulic cylinder fuel feeding, I=0, and automatic cervical vertebra traction chair is shut down after completing all drawing-in motions and waited for start next time.
Claims (4)
1. electricity-liquid the servo-control system of an automatic cervical vertebra traction chair, it is characterized in that: comprise the PID controller for Electric signal processing, the input of PID controller is connected with the pressure transducer (1) for detecting pull strength and the input through keyboard module (2) for setting pull strength maximum; The outfan of described PID controller is connected with the electricity-hydraulic servo (3) for performing control instruction, and described electricity-hydraulic servo is arranged on hydraulic cylinder (6).
2. electricity-liquid the servo-control system of a kind of automatic cervical vertebra traction chair according to claim 1, is characterized in that: described pressure transducer adopts the miniature press type sensor of WNK.
3. electricity-liquid the servo-control system of a kind of automatic cervical vertebra traction chair according to claim 1, is characterized in that: the outfan of described PID controller connects electricity-hydraulic servo (3) by servo amplifier (4).
4. electricity-liquid the servo-control system of a kind of automatic cervical vertebra traction chair according to claim 1, is characterized in that described input through keyboard module (2) and pressure transducer (1) are connected the input of PID controller by a subtractor (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520081775.6U CN204468369U (en) | 2015-02-05 | 2015-02-05 | A kind of electricity-liquid servo-control system of automatic cervical vertebra traction chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520081775.6U CN204468369U (en) | 2015-02-05 | 2015-02-05 | A kind of electricity-liquid servo-control system of automatic cervical vertebra traction chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204468369U true CN204468369U (en) | 2015-07-15 |
Family
ID=53624109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520081775.6U Expired - Fee Related CN204468369U (en) | 2015-02-05 | 2015-02-05 | A kind of electricity-liquid servo-control system of automatic cervical vertebra traction chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204468369U (en) |
-
2015
- 2015-02-05 CN CN201520081775.6U patent/CN204468369U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104042259A (en) | Slave manipulator device for auxiliary system of main and slave minimally invasive blood vessel interventional surgery | |
| CN203576793U (en) | Electric nursing bed automatically adjustable according to patient's will | |
| CN104434493B (en) | CPR external chest compression device | |
| US20240017407A1 (en) | Control method, apparatus, and system of a composite robot | |
| CN204468369U (en) | A kind of electricity-liquid servo-control system of automatic cervical vertebra traction chair | |
| CN106421946A (en) | Multi-degree-of-freedom automated cupping device | |
| CN101961271B (en) | Dynamic knee prothesis-based impedance control method | |
| CN203208165U (en) | Intelligent brain controlled power exoskeleton prosthesis | |
| CN203935213U (en) | A kind of principal and subordinate's minimally-invasive vascular intervene operation aid system is from operator device | |
| CN103807249B (en) | robot bionic hydraulic system | |
| CN105030405A (en) | Forcing device of cervical vertebra tractor | |
| CN204814324U (en) | Cervical vertebra tractor's force means | |
| CN109333533B (en) | Man-machine contact force control method and device based on hydraulic drive | |
| CN110811910B (en) | Injection device capable of quickly replacing plug and reducing labor intensity | |
| CN202005927U (en) | Blood vessel perfusion device | |
| CN104678807B (en) | A kind of hydraulic cylinder draw bar control circuit of automatic cervical vertebra traction chair | |
| CN201542925U (en) | Diabetes physical-therapy device | |
| CN202313843U (en) | Surgical lumbar traction bed | |
| CN207084824U (en) | A kind of collimater drive system | |
| CN216222514U (en) | Gravity induction type transfusion rod | |
| CN201807020U (en) | Cardiovascular interventional injector | |
| CN204698690U (en) | A kind of continous pouring device for soft uretero-renoscope operation | |
| CN212627732U (en) | High-precision multichannel giant magnetostrictive infusion device | |
| CN210749313U (en) | Medical dermatology acne removing device | |
| CN208987886U (en) | A kind of vamp planisher of shoemaking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20160205 |