阅读说明：本技术 一种金属箔涂布控制系统及方法 (Metal foil coating control system and method ) 是由 林君山 于 2020-05-27 设计创作，主要内容包括：本发明涉及涂布工艺技术领域,提供一种金属箔涂布控制系统及方法,系统包括与下位机通讯交互的N个伺服电机以及与N个伺服电机相对应的用于采集对应位置金属箔张力的N-1个张力传感器,若干个张力传感器向对应的控制闭环的响应电机反馈张力值,对应的伺服电机根据反馈的张力值调整驱动辊的扭矩,保持金属箔恒定张力,实现金属箔涂布的闭环控制,进一步的提升涂布质量和设备精度。(The invention relates to the technical field of coating processes, and provides a metal foil coating control system and a metal foil coating control method.)

1. A metal foil coating control system is characterized by comprising N servo motors which are communicated and interacted with a lower computer and N-1 tension sensors which correspond to the N servo motors and are used for acquiring the tension of metal foils at corresponding positions;

the N servo motors are respectively marked as a first servo motor, a second servo motor, an Nth-1 servo motor and an Nth servo motor, the first servo motor, the second servo motor, the. The first servo motor, the second servo motor, the.

The first servo motor, the second servo motor and the first tension sensor form a first control closed loop for controlling the actual tension of the metal foil to be consistent with the set tension, the second servo motor, the third servo motor and the second tension sensor form a second control closed loop for controlling the metal Bo tension to be constant, the third servo motor, the fourth servo motor and the third tension sensor form a third control closed loop for controlling the tension of the metal foil to be constant, by analogy, the N-2 servo motor, the N-1 servo motor and the N-2 tension sensor form an N-2 control closed loop for controlling the tension of the metal foil to be constant, the N-1 th servo motor, the N-1 th servo motor and the N-1 th tension sensor form an N-1 th control closed loop for controlling the winding/discharging of the metal foil;

the lower computer obtains a preset tension value, a preset target speed and a preset acceleration through the upper computer.

2. The metal foil coating control system according to claim 1, wherein in the first control closed loop, the second servo motor serves as a main motor of the metal foil coating control system, system speed is maintained to be stable, and the first servo motor serves as a response motor;

the first tension sensor is in communication connection with the first servo motor, and the first servo motor adjusts the torque of the first servo motor according to the tension value fed back by the first tension sensor, so that the actual tension of the metal foil is controlled to be consistent with the set tension.

3. The metal foil coating control system of claim 2, wherein in the second control loop, the third servo motor acts as a response motor;

the second tension sensor is respectively connected with the first tension sensor and a third servo motor, and the third servo motor adjusts the torque of the third servo motor according to the tension value fed back by the second tension sensor to control the tension of the metal foil to be constant.

4. The metal foil coating control system of claim 3 wherein in said third control closed loop, said fourth servo motor acts as a response motor;

the third tension sensor is respectively connected with the second tension sensor and a fourth servo motor, and the fourth servo motor adjusts the torque of the fourth servo motor according to the tension value fed back by the third tension sensor to control the tension of the metal foil to be constant.

5. The metal foil coating control system of claim 4, wherein in said N-2 control closed loop, said N-1 servo motor acts as a response motor;

the N-2 tension sensor is respectively connected with the N-2 tension sensor and the N-1 servo motor, and the N-1 servo motor adjusts the torque of the N-1 servo motor according to the tension value fed back by the N-2 tension sensor to control the tension of the metal foil to be constant.

6. The metal foil coating control system of claim 5, wherein in said N-1 control closed loop, said Nth servomotor acts as a response motor;

the N-1 tension sensor is respectively connected with the lower computer and the Nth servo motor, and the Nth servo motor adjusts the torque of the Nth servo motor according to the tension value fed back by the N-1 tension sensor to control the winding/discharging of the metal foil.

7. The metal foil coating control system according to claim 6, wherein each servo motor torque controls a torque M of a corresponding drive roller, respectively;

the radius r of each driving roller, the tension T of the tension sensor and the torque M of the driving roller have the following functional relationship:

……

8. a metal foil coating control method based on the metal foil coating control system according to any one of claims 1 to 7, characterized by comprising the steps of:

the servo motors respectively acquire corresponding target speed and acceleration from the lower computer, respectively control the corresponding driving rollers to start and operate, and execute the unwinding, traction, coating processes and winding/discharging processes of the metal foil;

after starting, according to the acceleration and the target speed set by the lower computer, the second servo motor controls the second driving roller to be in a stable running state;

the method comprises the steps that a first tension sensor obtains a current tension value of a metal foil and feeds the obtained tension value of the metal foil back to a first servo motor, the first servo motor adjusts corresponding torque, controls the torque of a first driving roller and controls the actual tension of the metal foil to be consistent with set tension;

the second tension sensor acquires a current tension value of the metal foil and feeds the acquired tension value of the metal foil back to a third servo motor, the third servo motor adjusts corresponding torque, controls the torque of a third driving roller and keeps the tension of the metal foil constant;

a third tension sensor acquires a current tension value of the metal foil and feeds the acquired tension value of the metal foil back to a fourth servo motor, the fourth servo motor adjusts torque, controls the torque of a fourth driving roller and keeps the tension of the metal foil constant;

and so on;

an N-2 tension sensor acquires a current tension value of the metal foil and feeds the acquired tension value of the metal foil back to an N-1 servo motor, the N-1 servo motor adjusts torque, controls the torque of an N-1 driving roller and keeps the tension of the metal foil constant;

and an N-1 th tension sensor acquires the tension value of the current metal foil, the Nth servo motor adjusts the torque, controls the torque of the Nth driving roller and controls the winding/discharging of the metal foil.

9. The metal foil coating control method according to claim 8, wherein each servo motor torque controls a torque M of a corresponding driving roller, respectively;

the radius r of each driving roller, the tension T of the tension sensor and the torque M of the driving roller have the following functional relationship:

……

Technical Field

The invention belongs to the technical field of coating processes, and particularly relates to a metal foil coating control system and method.

Background

As technology advances, more and more products require a process of coating on the surface of a metal foil. The synchronization of the driving rollers and the system tension are very critical in the coating process. The control of the existing motor is generally divided into displacement control, speed control and torque control.

However, because the metal foil has small elasticity, a large tension is generated due to a small displacement difference, and meanwhile, the driving rollers of the coating system have the characteristics of strong coupling, much interference and nonlinearity, so that the system is easy to shake by adopting the conventional speed or displacement PID control, and the production requirement is difficult to achieve. Taking an aluminum foil as an example: the aluminum foil with the thickness of 0.1mm and the width of 600mm is applied with the tension of 10kg, the deformation amount is 0.015mm, the response between the tension and the deformation is sensitive, and the tension is easily uncontrollable or the system shakes by adopting the speed or displacement control, thereby further influencing the coating quality and the equipment precision.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a metal foil coating control system, aiming at solving the problem that tension is not controlled or the system shakes easily due to speed or displacement control adopted in the prior art, so that the coating quality and the equipment precision are influenced.

The technical scheme provided by the invention is as follows: a metal foil coating control system comprises N servo motors which are in communication interaction with a lower computer and N-1 tension sensors which correspond to the N servo motors and are used for collecting the tension of metal foils at corresponding positions;

the N servo motors are respectively marked as a first servo motor, a second servo motor, an Nth-1 servo motor and an Nth servo motor, the first servo motor, the second servo motor, the. The first servo motor, the second servo motor, the.

The first servo motor, the second servo motor and the first tension sensor form a first control closed loop for controlling the actual tension of the metal foil to be consistent with the set tension, the second servo motor, the third servo motor and the second tension sensor form a second control closed loop for controlling the metal Bo tension to be constant, the third servo motor, the fourth servo motor and the third tension sensor form a third control closed loop for controlling the tension of the metal foil to be constant, by analogy, the N-2 servo motor, the N-1 servo motor and the N-2 tension sensor form an N-2 control closed loop for controlling the tension of the metal foil to be constant, the N-1 th servo motor, the N-1 th servo motor and the N-1 th tension sensor form an N-1 th control closed loop for controlling the winding/discharging of the metal foil;

the lower computer obtains a preset tension value, a preset target speed and a preset acceleration through the upper computer.

As a modified scheme, in the first control closed loop, the second servo motor is used as a main motor of the metal foil coating control system to maintain the system speed stable, and the first servo motor is used as a response motor;

the first tension sensor is in communication connection with the first servo motor, and the first servo motor adjusts the torque of the first servo motor according to the tension value fed back by the first tension sensor, so that the actual tension of the metal foil is controlled to be consistent with the set tension.

As a modified solution, in the second control closed loop, the third servo motor is used as a response motor;

the second tension sensor is respectively connected with the first tension sensor and a third servo motor, and the third servo motor adjusts the torque of the third servo motor according to the tension value fed back by the second tension sensor to control the tension of the metal foil to be constant.

As a modified solution, in the third control closed loop, the fourth servo motor is used as a response motor;

the third tension sensor is respectively connected with the second tension sensor and a fourth servo motor, and the fourth servo motor adjusts the torque of the fourth servo motor according to the tension value fed back by the third tension sensor to control the tension of the metal foil to be constant.

As a modified scheme, in the N-2 control closed loop, the N-1 servo motor is used as a response motor;

the N-2 tension sensor is respectively connected with the N-2 tension sensor and the N-1 servo motor, and the N-1 servo motor adjusts the torque of the N-1 servo motor according to the tension value fed back by the N-2 tension sensor to control the tension of the metal foil to be constant.

As a modified scheme, in the N-1 control closed loop, the Nth servo motor is used as a response motor;

the N-1 tension sensor is respectively connected with the lower computer and the Nth servo motor, and the Nth servo motor adjusts the torque of the Nth servo motor according to the tension value fed back by the N-1 tension sensor to control the winding/discharging of the metal foil.

As an improved scheme, the torques of the servo motors respectively control the torques M of the corresponding driving rollers;

the radius r of each driving roller, the tension T of the tension sensor and the torque M of the driving roller have the following functional relationship:

……

another object of the present invention is to provide a metal foil coating control method based on a metal foil coating control system, the method comprising the steps of:

the servo motors respectively acquire corresponding target speed and acceleration from the lower computer, respectively control the corresponding driving rollers to start and operate, and execute the unwinding, traction, coating processes and winding/discharging processes of the metal foil;

after starting, according to the acceleration and the target speed set by the lower computer, the second servo motor controls the second driving roller to be in a stable running state;

the method comprises the steps that a first tension sensor obtains a current tension value of a metal foil and feeds the obtained tension value of the metal foil back to a first servo motor, the first servo motor adjusts corresponding torque, controls the torque of a first driving roller and controls the actual tension of the metal foil to be consistent with set tension;

the second tension sensor acquires a current tension value of the metal foil and feeds the acquired tension value of the metal foil back to a third servo motor, the third servo motor adjusts corresponding torque, controls the torque of a third driving roller and keeps the tension of the metal foil constant;

a third tension sensor acquires a current tension value of the metal foil and feeds the acquired tension value of the metal foil back to a fourth servo motor, the fourth servo motor adjusts torque, controls the torque of a fourth driving roller and keeps the tension of the metal foil constant;

and so on;

an N-2 tension sensor acquires a current tension value of the metal foil and feeds the acquired tension value of the metal foil back to an N-1 servo motor, the N-1 servo motor adjusts torque, controls the torque of an N-1 driving roller and keeps the tension of the metal foil constant;

and an N-1 th tension sensor acquires the tension value of the current metal foil, the Nth servo motor adjusts the torque, controls the torque of the Nth driving roller and controls the winding/discharging of the metal foil.

As an improved scheme, the torques of the servo motors respectively control the torques M of the corresponding driving rollers;

the radius r of each driving roller, the tension T of the tension sensor and the torque M of the driving roller have the following functional relationship:

……

in the embodiment of the invention, the metal foil coating control system comprises N servo motors which are communicated and interacted with the lower computer and N-1 tension sensors which are corresponding to the N servo motors and used for collecting the tension of the metal foil at the corresponding position, the tension sensors feed back tension values to the corresponding response motors of the control closed loop, the corresponding servo motors adjust the torque of the driving roller according to the fed back tension values, the constant tension of the metal foil is kept, the closed loop control of the metal foil coating is realized, and the coating quality and the equipment precision are further improved.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of an implementation of a metal foil coating control system provided by the present invention;

fig. 2 is a schematic view of the driving of the rotating roller provided by the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Fig. 1 is a schematic view of an implementation of a metal foil coating control system provided by the present invention, and for convenience of explanation, only the parts related to the embodiment of the present invention are shown in the figure.

The metal foil coating control system comprises N servo motors which are in communication interaction with a lower computer and N-1 tension sensors which correspond to the N servo motors and are used for acquiring the tension of the metal foil at the corresponding position;

the N servo motors are respectively marked as a first servo motor, a second servo motor, an Nth-1 servo motor and an Nth servo motor, the first servo motor, the second servo motor, the. The first servo motor, the second servo motor, the.

The first servo motor, the second servo motor and the first tension sensor form a first control closed loop for controlling the actual tension of the metal foil to be consistent with the set tension, the second servo motor, the third servo motor and the second tension sensor form a second control closed loop for controlling the metal Bo tension to be constant, the third servo motor, the fourth servo motor and the third tension sensor form a third control closed loop for controlling the tension of the metal foil to be constant, by analogy, the N-2 servo motor, the N-1 servo motor and the N-2 tension sensor form an N-2 control closed loop for controlling the tension of the metal foil to be constant, the N-1 th servo motor, the N-1 th servo motor and the N-1 th tension sensor form an N-1 th control closed loop for controlling the winding/discharging of the metal foil;

the lower computer obtains a preset tension value, a preset target speed and a preset acceleration through the upper computer.

In this embodiment, the second servo motor serves as a control core of the entire system, and controls acceleration, deceleration and operation speed of the entire system.

As shown in fig. 2, each servo motor torque controls the torque M of the corresponding driving roller;

the radius r of each driving roller, the tension T of the tension sensor and the torque M of the driving roller have the following functional relationship:

……

as shown in fig. 1 and fig. 2, in the first control closed loop, the second servo motor is used as a main motor of the metal foil coating control system to maintain the system speed stable, and the first servo motor is used as a response motor; the first tension sensor is in communication connection with the first servo motor, and the first servo motor adjusts the torque of the first servo motor according to the tension value fed back by the first tension sensor and controls the actual tension of the metal foil to be consistent with the set tension;

in the second control closed loop, the third servo motor is used as a response motor; the second tension sensor is respectively connected with the first tension sensor and a third servo motor, and the third servo motor adjusts the torque of the third servo motor according to the tension value fed back by the second tension sensor to control the tension of the metal foil to be constant;

in the third control closed loop, the fourth servo motor acts as a response motor; the third tension sensor is respectively connected with the second tension sensor and a fourth servo motor, and the fourth servo motor adjusts the torque of the fourth servo motor according to the tension value fed back by the third tension sensor to control the tension of the metal foil to be constant;

and so on;

in the N-2 control closed loop, the N-1 servo motor is used as a response motor; the N-2 tension sensor is respectively connected with the N-2 tension sensor and the N-1 servo motor, and the N-1 servo motor adjusts the torque of the N-1 servo motor according to the tension value fed back by the N-2 tension sensor to control the tension of the metal foil to be constant;

in the N-1 control closed loop, the Nth servo motor is used as a response motor;

the N-1 tension sensor is respectively connected with the lower computer and the Nth servo motor, and the Nth servo motor adjusts the torque of the Nth servo motor according to the tension value fed back by the N-1 tension sensor to control the winding/discharging of the metal foil.

In the embodiment of the invention, the first tension sensor, the second tension sensor, the (N-2) th tension sensor and the (N-1) th tension sensor are sequentially in communication connection, and the (N-1) th tension sensor transmits information to the lower computer for storage and recording.

In this embodiment, with the above arrangement, the fluctuation of the entire metal foil coating control system is small, and the tension balance can be achieved quickly.

On the basis of fig. 1 and fig. 2, the method for controlling the coating of the metal foil provided by the invention specifically comprises the following steps:

(1) the servo motors respectively acquire corresponding target speed and acceleration from the lower computer, respectively control the corresponding driving rollers to start and operate, and execute the unwinding, traction, coating processes and winding/discharging processes of the metal foil;

(2) after starting, according to the acceleration and the target speed set by the lower computer, the second servo motor controls the second driving roller to be in a stable running state;

(3) the method comprises the steps that a first tension sensor obtains a current tension value of a metal foil and feeds the obtained tension value of the metal foil back to a first servo motor, the first servo motor adjusts corresponding torque, controls the torque of a first driving roller and controls the actual tension of the metal foil to be consistent with set tension;

(4) the second tension sensor acquires a current tension value of the metal foil and feeds the acquired tension value of the metal foil back to a third servo motor, the third servo motor adjusts corresponding torque, controls the torque of a third driving roller and keeps the tension of the metal foil constant;

(5) a third tension sensor acquires a current tension value of the metal foil and feeds the acquired tension value of the metal foil back to a fourth servo motor, the fourth servo motor adjusts torque, controls the torque of a fourth driving roller and keeps the tension of the metal foil constant;

and so on;

(6) an N-2 tension sensor acquires a current tension value of the metal foil and feeds the acquired tension value of the metal foil back to an N-1 servo motor, the N-1 servo motor adjusts torque, controls the torque of an N-1 driving roller and keeps the tension of the metal foil constant;

(7) and an N-1 th tension sensor acquires the tension value of the current metal foil, the Nth servo motor adjusts the torque, controls the torque of the Nth driving roller and controls the winding/discharging of the metal foil.

The embodiment of the invention can realize rapid multi-axis synchronous control, the whole system is rapidly balanced, and the tension of each control closed loop is respectively controllable.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.