CN102564672A

CN102564672A - Constant torque servo amplifier

Info

Publication number: CN102564672A
Application number: CN2012100465832A
Authority: CN
Inventors: 椚砂土诗
Original assignee: KUNSHAN AIDUSI ELECTRONIC TECHNOLOGY CO LTD
Current assignee: KUNSHAN AIDUSI ELECTRONIC TECHNOLOGY CO LTD
Priority date: 2012-02-28
Filing date: 2012-02-28
Publication date: 2012-07-11
Anticipated expiration: 2032-02-28
Also published as: CN102564672B

Abstract

The utility model discloses a constant torque servo amplifier, which comprises a motor, wherein bearings are connected to two ends of the motor, and fixed on a fixed stand, and a fixing part is connected to the fixed stand; and a rotating shaft is connected to one end of the motor, a rotating stop card is connected to the other end of the motor, a load sensor is arranged on the rotating stop card, and a rotational speed sensor is connected to one end of the rotating shaft. When the constant torque servo amplifier is used for a winding machine, the torque and the diameter of the cylinder are determined, then the tension is calculated, and the current of the motor is controlled, so that the tension is stable; when the motor is inspected, the constant torque servo amplifier as the load equipment is used for controlling the torque for enhancing the correctness of characteristic inspection; and when the constant torque servo amplifier is used for a servo stamping machine, the stamping torque is set, the power supply for the motor is controller, the structure is simple, and a stamping machine with low cost can be manufactured.

Description

Decide the servo expander of torsion

Technical field

The present invention relates to a kind of servo expander, decide servo expander of torsion and revolution tester in particular to a kind of.

Background technology

The servo expander of main flow all adopts digital signal processor (DSP) as the control core at present, can realize the control algolithm of more complicated, realizes digitizing, networking and intelligent.It is the driving circuit of core design that power device generally adopts with SPM (IPM); The inner integrated driving circuit of IPM; Have superpotential, excess current, fault detect holding circuit such as overheated, under-voltage simultaneously; In major loop, also add soft starting circuit, to reduce the impact of start-up course to driver.Power drive unit at first carries out rectification through three-phase bridge rectification circuit to three-phase electricity or the civil power of importing, and obtains corresponding direct current.Through overcommutation good three-phase electricity or civil power, drive three-phase permanent formula synchronous ac servomotor through the frequency conversion of three phase sine PWM voltage source inverter again.The whole process of power drive unit can briefly be exactly the process of AC-DC-AC.The main topological circuit of rectification unit (AC-DC) is a not control rectifying circuit of three phase full bridge.

Prior art is measured the mechanism that moment of torsion does not utilize the torsion difference of motor fixed part and motor rotating part to measure.

Summary of the invention

The objective of the invention is to overcome the above problem that prior art exists, a kind of servo expander of torsion of deciding is provided.

For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention realizes through following technical scheme:

Decide the servo expander of torsion, comprise motor, said motor two ends are connected with bearing, and said bearing fixing is in fixed stand, and said fixed stand is connected with fixed part; Said motor one end is connected with turning axle, and the other end is connected with the card that stops the rotation, and the said card that stops the rotation is provided with load cell, and said turning axle one end is connected with speed probe.

Further, said load cell and said speed probe are connected in CPU through lead.

Further, said CPU is connected with the PWM power supply through lead.

Further, said load cell is a load cell.

Further, said fixed stand is a housing.

The invention has the beneficial effects as follows:

The present invention is used for wrapping machine, measures torsion and drum diameter, calculates tension force then, and the electric current of control motor makes tension stability.When being used for the motor inspection, as load equipment, control torsion improves the correctness of motor characteristics inspection.Be used for servo stamping machine, set punching press torsion, the control motor power, simple in structure, can make the electric automobile of stamping machine and the driving of four-wheel separate motors cheaply.

Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technological means of the present invention in order can more to know, and can implement according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. specify as after.Embodiment of the present invention is provided by following examples and accompanying drawing thereof in detail.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 model synoptic diagram of the present invention;

Fig. 2 circuit of the present invention connects synoptic diagram;

Fig. 3 structural representation of the present invention;

Fig. 4 wrapping machine embodiment synoptic diagram;

Fig. 5 motor inspection embodiment synoptic diagram;

The servo stamping machine embodiment of Fig. 6 synoptic diagram;

Fig. 7 vehicle actual travel embodiment synoptic diagram.

Label declaration among the figure: 1, turning axle, 2, bearing, 3, fixed stand, 4, the card that stops the rotation, 5, motor, 6, load cell, 7, tachometer generator, 8, fixed part.

Embodiment

Below with reference to accompanying drawing and combine embodiment, specify the present invention.

With reference to Fig. 1, shown in Figure 3, decide the servo expander of torsion, comprise motor 5, said motor 5 two ends are connected with bearing 2, and said bearing 2 is fixed in fixed stand 3, and said fixed stand 3 is connected with fixed part 8; Said motor 5 one ends are connected with turning axle 1, and the other end is connected with the card 4 that stops the rotation, and the said card 4 that stops the rotation is provided with load cell 6, and said turning axle 1 one ends are connected with speed probe 7.

With reference to shown in Figure 2, further, said load cell 6 and said speed probe 7 are connected in CPU through lead.

Further, said CPU is connected with the PWM power supply through lead.

Further, said load cell 6 is a load cell.

Further, said fixed stand 3 is a housing.

Said load cell 6 and said speed probe 7 are measured simultaneously.

With reference to shown in Figure 4, the film of drum is seen machine off, and the application on the wrapping machine is appended the measuring diameter electronic loop in addition and can be realized keeping the stable of tension force.

The film of drum is seen machine off, and the wrapping machine unloading part divides and keeps equal tension force, so can measure the torsion of axle and the diameter of drum, calculates tension force then, the strength that lets tension stability control brake.

Wrapping machine is measured torsion and drum diameter, calculates tension force then.Let tension stability, the electric current of control motor.

Compare with existing mode, the tension force of seeing machine and wrapping machine off is equal, and so stable control is not for the lax of film can be taken place in the conveyance of film, along with not needing lax mechanism of revisal and askew capable mechanism.

When using the kinking machine, stable tension is come very neat wound wire.The speed of sending electric wire is to keep stable, so the rotational speed of bobbin is a high speed rotating when just having begun.The gradual slow rotational speed is so the translational speed of bobbin becomes inverse proportion bobbin rotational speed.

The tension force deviation can not take place on the principle in the arm tensioning mode relatively, so can set torsion bigger than normal, can increase the spiral amount.

With reference to shown in Figure 5, connect motor and this equipment, the stop the rotation charge capacity of the corresponding brake torsion on the card of rotation motor is measured the power that this charge capacity is controlled motor, does not influence the rotation number of motor, can keep stable load torsion.

Load equipment in the past is to use solenoid valve to become motor power, sets the structure of load torsion, but this equipment is the charge capacity of measuring axle, and control torsion is so can improve the correctness of motor characteristics inspection.

With reference to shown in Figure 6, measure the torsion of axle, the rotation number of control motor descends gradually, and the motor top speed is rotated during no load condition, so the power supply of control motor is controlled decline rate.

Staking punch partly contacts is pressed object big with regard to charge capacity, can fall the motor rotational speed, and this state is set punching press torsion down, utilizes control horse large power supply, uses the punching press torsion of setting to be pressed into and is pressed object.

Follow with previous mode relatively, being pressed into does not have load cell on the panel, thus need not consider the intensity of load cell, simple in structure, can make stamping machine cheaply.

With reference to shown in Figure 7, the vehicle actual travel of use engine or motor is experimentally improved the charge capacity that engine support comes the detection of engine support, the torsion in the time of also detecting vehicle '.

The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. decide the servo expander of torsion, it is characterized in that: comprise motor (5), said motor (5) two ends are connected with bearing (2), and said bearing (2) is fixed in fixed stand (3), and said fixed stand (3) is connected with fixed part (8); Said motor (5) one ends are connected with turning axle (1), and the other end is connected with the card that stops the rotation (4), and the said card that stops the rotation (4) is provided with load cell (6), and said turning axle (1) one end is connected with speed probe (7).

2. according to claim 1ly decide the servo expander of torsion, it is characterized in that: said load cell (6) and said speed probe (7) are connected in CPU through lead.

3. according to claim 1ly decide the servo expander of torsion, it is characterized in that: said CPU is connected with the PWM power supply through lead.

4. according to claim 1ly decide the servo expander of torsion, it is characterized in that: said load cell (6) is a load cell.

5. according to claim 1ly decide the servo expander of torsion, it is characterized in that: said fixed stand (3) is housing.