KR101205976B1 - Controlling method of Driving device used in building automatic control apparatus for safty management of system - Google Patents

Abstract

PURPOSE: A method for controlling a driving device of a building automatic control device for stable system management is provided to stably close a duct with a flow control member by automatically setting a rotational displacement range of a motor, thereby preventing unnecessary energy waste and safety accidents. CONSTITUTION: A method for controlling a driving device of a building automatic control device for stable system management is composed of a motor driving step(S120) for driving a motor based on input signals and a torque control step for setting the maximum torque of the motor according to the rotational load of the motor. The torque control step includes a step for generating current according to the rotational load during the rotation of the motor and voltage according to the current(S140); a step for determining whether or not the current is overcurrent(S160); a step for determining whether or not the torque of the motor is a set torque value when the current is the overcurrent; and a step for controlling the ratio of the amplified voltage by controlling variable resistance when the torque is not the set torque value. [Reference numerals] (AA) No; (BB) Yes; (CC) No; (DD) Yes; (S110) Power ON; (S120) Driving a motor; (S130) Inputting arbitrary load; (S140) Generating current and voltage according to the load; (S150) Amplifying the voltage; (S180) Adjusting variable resistance; (S190) Finishing torque adjustment

Description

Controlling method of driving device used in building automatic control apparatus for safty management of system

The present invention relates to a control method of a drive device for automatic building control equipment, the control of the drive device for building automatic control equipment that can stably operate the system by stably opening and closing the duct for supplying fluid to a specific space of the building. It is about a method.

Ducts are indispensable for the air-conditioning and air conditioning facilities used in the operation of buildings. Through the duct to supply a fluid, for example hot water, steam, etc. to a specific space of the building.

Here, the flow rate of the fluid passing through the duct is controlled by a flow control member such as a valve or a damper installed in the duct.

Specifically, the flow rate adjusting member is controlled by a driving device to adjust the flow rate. The driving device includes a motor for generating a rotational force, and a gear for transmitting the rotational force of the motor to the flow rate control member.

The gear converts the rotational motion of the motor into a linear motion or a rotational motion of the flow regulating member, and decelerates the rotational speed of the motor by a predetermined ratio and transmits it to the flow regulating member.

However, in the related art, since the rotational speed and the torque of the motor are collectively controlled by using a standardized flow curve, the actual environment in which the flow regulating member is installed, for example, the amount of change in load is not considered at all.

As a result, the limit switch is operated before the flow control valve completely closes the duct, so that the operation of the motor is stopped, so that hot water and steam of high temperature are supplied to the user, which may cause personal injury due to burns. . In addition, there is a problem that waste of energy occurs due to excessive heating and cooling.

Republic of Korea Patent Publication No. 10-2010-0043173 (Invention name: electric motor control)

The problem to be solved by the present invention is to provide a control method of a drive device for automatic building control equipment for stable system operation that can automatically set the maximum torque of the motor according to the amount of change in load during operation.

Another problem to be solved by the present invention is to provide a control method of a drive device for automatic building control equipment for stable system operation that can automatically set the rotational movement range of the motor for opening and closing the flow control member.

Another problem to be solved by the present invention is to provide a control method of a drive device for automatic building control equipment for stable system operation that can control the rotational speed of the motor differently according to the rotational position of the motor.

In order to solve the above problems, the present invention in the control of the drive device for automatic building control equipment for stable system operation, the motor drive step for driving the motor based on the input signal; And a torque adjusting step of setting a maximum torque of the motor to match the rotational load connected to the motor, wherein the torque adjusting step includes a current according to the rotational load and a voltage according to the current while the motor is rotating. Generating; amplifying the voltage using an amplifier; determining whether the current corresponds to a preset overcurrent; and if the current corresponds to the overcurrent, whether the torque applied to the motor is a set torque value. And a variable resistance adjustment step of adjusting an amplification ratio of the voltage through a variable resistance adjustment when the torque is not the set torque value. It provides a control method of the device.

The control method of the drive device for automatic building control equipment for the stable system operation may further comprise a movement range setting step of setting the rotational movement range of the motor.

The moving range setting step may include checking whether a first current generated by a rotating load corresponds to a first overcurrent while the motor rotates in a counterclockwise direction, and when the first current corresponds to the first overcurrent, Storing the first set range value while the motor is stopped, rotating the motor clockwise after the first set range value is stored, and rotating the motor while the motor rotates clockwise. And checking whether the second current generated by the second current corresponds to the second overcurrent, and when the second current corresponds to the second overcurrent, stopping the operation of the motor and storing a second set range value. can do.

The moving range setting step may further include a rotation counting step in which the rotation speed of the motor is counted when the motor is rotated clockwise after the first setting range value is stored.

Here, the first set range value is stored as 0, the second set range value is stored as 100, and the rotation speed of the motor when the second current corresponds to the second overcurrent is set to the second set range value. Can be corresponded to.

In addition, the control method of the drive device for automatic building control equipment for the stable system operation is a driving mode control step of controlling the operation mode for the rotational speed of the motor in accordance with the rotational position of the motor for driving the flow rate control member It may further include.

The operation mode control step may include comparing a current rotational position and a target rotational position of the motor; Comparing a first difference value with a second difference value that is a difference value between the target rotational position and the initial rotational position of the motor, and the difference between the second difference value and the first difference value is smaller than a set difference value; If the same, the motor may include a deceleration operation step in which the motor is decelerated, and a constant speed operation step in which the motor is driven at constant speed when a difference between the second difference value and the first difference value is greater than the set difference value.

The operation mode control step may include determining whether a third current caused by the rotation load corresponds to a third predetermined overcurrent when the motor is driven at constant speed, and when the third current corresponds to the third overcurrent. The motor may further include a correction operation step of performing a correction operation.

The correction driving step may include a stop driving step in which the motor maintains a stop state for a first set time, and storing the stopped position of the motor as an initial rotation position of the motor.

In another embodiment of the correction operation step, the correction operation step may include an opposite direction driving step in which the motor rotates in the opposite direction by a first set rotation range.

Effects of the control method of the drive device for automatic building control equipment for stable system operation according to the present invention are as follows.

First, by adjusting the variable resistance automatically setting the maximum torque of the motor according to the amount of change of load during operation, it is possible to cope with the flow rate or air volume that changes according to a specific environment to control the operation of the motor more stably and accurately There is an advantage.

Second, by automatically setting the rotational movement range of the motor for opening and closing the flow regulating member, the flow regulating member can reliably close the duct, thereby reducing unnecessary energy waste and reducing the safety accident of the user. There is an advantage that can be prevented.

Third, by controlling the rotational speed of the motor differently according to the rotational position of the motor to prevent the flow rate control member and the gear has an excessive load, there is an advantage that can be prevented damage to the flow rate control member and the gear.

1 is a block diagram showing an embodiment of a drive device for automatic building control equipment for stable system operation according to the present invention.
FIG. 2 is a flowchart illustrating a process of setting a maximum torque of a motor provided in the driving device of FIG. 1.
3 is a flowchart illustrating a process of automatically setting a rotation range of a motor provided in the driving device of FIG. 1.
4 is a flowchart illustrating a process in which the rotational speed of the motor is controlled differently according to the rotational position of the motor provided in the driving device of FIG. 1.

With reference to the accompanying drawings, it will be described a method for controlling the drive device for automatic building control equipment for stable system operation according to the present invention.

Referring to Figure 1, it will be described a drive device for automatic building control equipment for stable system operation according to the present invention.

The driving device for the automatic building control equipment is a motor 300 for driving the flow rate control member 500 for adjusting the flow rate of the fluid passing through the duct, and the rotational force of the motor 300 to the flow rate control member 500 Gear 400 for transmitting to the, and a motor control unit 100 for controlling the drive of the motor 300.

In addition, the driving device for the automatic building control equipment is a signal input unit 210 for transmitting an input signal to the motor control unit 100, an overcurrent detector for checking whether the current consumed by the motor 300 corresponds to the overcurrent ( 220, an encoder 230 for counting the number of revolutions of the motor 300, a variable resistance adjusting unit 240 for adjusting a variable resistance, and an amplifier 250 for amplifying a voltage.

The motor control unit 100 controls the rotation speed of the converter unit 150 connected to the signal input unit 210, the position detection unit 120 for detecting the rotation position of the motor 300, and the motor 300. And a speed controller 130, a position controller 140 for controlling the rotational position of the motor 300, and an overload detector 110 for checking whether the motor 300 is overloaded, for example, whether or not the maximum torque is applicable. .

The converter unit 150 converts the analog signal input from the signal input unit 210 into a digital signal, and transmits the converted digital signal to the position control unit 140.

The position controller 140 controls the motor 300 based on the digital signal transmitted from the converter 150 and the rotation position data of the motor 300 transmitted from the position detector 120. The control signal is transmitted to the speed controller 130.

The speed controller 130 controls the rotational speed of the motor 300 based on the signal received from the position controller 140.

1 and 2, the process of setting the maximum torque of the motor 300 is set to match the rotational load connected to the motor provided in the drive device for automatic building control equipment according to the present invention.

First, when the power for driving the motor 300 is turned on (ON), the motor 300 is driven based on the input signal of the signal input unit 210 (S110, S120).

Next, an arbitrary rotation load is input while the motor 300 rotates, and a current according to the rotation load and a voltage according to the current are generated (S130 and S140).

Here, the rotation load is variable according to the type of equipment on which the motor 300 is installed, the flow rate or the air flow rate of the fluid flowing through the duct. Therefore, the current consumed by the motor, that is, the DC motor, is variably changed according to the rotational load.

Next, the amplifier 250 amplifies the voltage, and the overcurrent detector 220 determines whether the current L corresponds to a preset overcurrent (S150 and S160). Here, when the current L is greater than the current upper limit Lo, the current L corresponds to an overcurrent.

Next, when the current (L) corresponds to the overcurrent, the overload detection unit 110 determines whether the torque (T) applied to the motor 300 is a set torque value (To) (S170).

If the current L does not correspond to the overcurrent, the motor 300 is continuously operated and a new rotational load is input while the motor 300 is continuously operated. Therefore, a new load is input until the current L corresponds to the overcurrent.

Here, the reason why the overcurrent is applied to the motor 300 is that when the flow regulating member 500 moves in a predetermined direction and reaches a position where the duct is completely sealed, the flow regulating member 500 no longer moves. In the impossible state, the constant current flows to the motor 300.

Next, when the torque T satisfies the set torque value To, the set torque value is set to the maximum torque of the motor (S190).

If the torque T is not the set torque value To, a variable resistance adjusting step of adjusting an amplification ratio of the voltage through a variable resistance is performed (S180).

After the variable resistance adjusting step is performed, the motor 300 is continuously operated.

At this time, the current L is in the state of maintaining the overcurrent, and the variable resistance is continuously adjusted until the torque T reaches the set torque value To.

As a result, it is possible to stably set the maximum torque of the motor 300 according to a specific environment by automatically setting the maximum torque of the motor 300 according to the change amount of the load during operation by adjusting the variable resistance. It is possible to control the operation of the motor 300 more stably and accurately.

Meanwhile, referring to FIGS. 1 and 3, a process of automatically setting a rotation range of the motor in a control method of a driving device for automatic building control equipment for stable system operation according to the present invention will be described.

First, when the power for driving the motor 300 is turned on (ON), the motor 300 is driven in a first direction, for example counterclockwise (S211, S213).

Next, it is checked whether the first current I1 generated by the rotation load corresponds to the first overcurrent while the motor 300 rotates in the counterclockwise direction (S215).

Here, when the first current I1 is greater than the first current upper limit Is, the first current I1 corresponds to the first overcurrent.

Next, when the first current I1 corresponds to the first overcurrent, the operation of the motor 300 is stopped (S217).

As the driving of the motor 300 is stopped, the first set range value is stored as a marker value for the stopped position (S219). Here, the first set range value is stored as zero.

If the first current I1 does not correspond to the first overcurrent, the motor 300 continuously rotates counterclockwise, and a new rotation load is input. Therefore, a new rotational load is input until the first current I1 corresponds to the first overcurrent.

Next, after the first set range value is stored, the motor 300 is rotated in the opposite direction, that is, clockwise (S223).

Here, as the motor 300 rotates in the clockwise direction, the encoder 230 counts the rotation speed of the motor 300.

Next, it is checked whether the second current I2 generated by the rotation load corresponds to the second overcurrent while the motor 300 rotates in the clockwise direction (S225).

Here, when the second current I2 is greater than the second current upper limit Io, the second current I2 corresponds to a second overcurrent.

Next, when the second current I2 corresponds to the second overcurrent, the second set range value is stored as a marker value for the stopped position while the motor 300 is stopped.

Finally, when the second set range value is stored, the rotation range of the motor 300 is set.

The second set range value is stored as 100. Here, when the second current I2 corresponds to the second overcurrent, the rotation speed of the motor, for example, N, corresponds to the second set range value.

Specifically, when the rotation speed of the motor is 0, it corresponds to the first setting range value, and when the rotation speed of the motor is N, it corresponds to the second setting range value. That is, the rotation speed of the motor becomes N from the position where the flow rate control member 500 completely closes the duct to the position where the duct is completely opened.

Therefore, the specific position of the flow control member 500 can be seen how much can be reached when the motor rotates in the position where the duct is closed.

As a result, by automatically setting the rotational movement range of the motor for opening and closing the flow control member 500, the flow control member 500 can be reliably closed the duct, thereby reducing unnecessary energy waste It can prevent the user's safety accident.

On the other hand, referring to Figures 1 and 4, in the control method of the drive device for automatic building control equipment for stable system operation according to the present invention for controlling the operation mode for the rotational speed of the motor according to the rotational position of the motor Explain the process.

First, while the motor is driven based on the input signal, the position controller 140 compares the current rotation position P and the target rotation position Po of the motor (S310 and S320).

If the current rotation position P and the target rotation position Po of the motor are the same, the operation of the motor 300 is stopped (S330).

If the current rotational position P and the target rotational position Po do not coincide with each other, a first difference value (| Po-P which is a difference value between the current rotational position P and the target rotational position Po) is obtained. ) And a second difference value (Po-P1 |), which is a difference value between the target rotational position Po and the initial rotational position P1 of the motor, is compared (S340).

Next, when the difference between the second difference value and the first difference value is less than or equal to a set difference value (Po-P1 | x 0.1), the motor 300 is decelerated and operated (S350).

Here, the set difference value is set to 10% of the second difference value. Of course, the setting difference value may be set to another value according to the user's setting.

When the motor 300 performs the deceleration operation, if the current rotation position P and the target rotation position Po of the motor are the same, the operation of the motor is stopped.

If the difference between the second difference value (Po-P1 |) and the first difference value (| Po-P |) is greater than the set difference value (| Po-P1 | × 0.1), the motor 300 ) Is constant speed operation (S360).

As a result, by controlling the rotational speed of the motor differently according to the rotational position of the motor to prevent the flow rate control member 500 and the gear 400 has an excessive load, the flow rate control member 500 and the gear 400 of the It is possible to prevent breakage.

Specifically, in the related art, since the speed of the flow regulating member 500 is set constant according to the position, the flow regulating member 500 is not in a position in which the duct is completely closed or in a position in which the duct is completely opened. In this case, since the motor 300 has to be moved at a predetermined speed, a large reaction is instantaneously caused to the gear 400 and the flow rate control member 500.

However, in the present invention, even if the flow regulating member 500 is not in a position to completely close the duct or the duct completely open, the flow regulating member 500 starts at a low speed and operates at a constant speed. By doing so, the load applied to the flow regulating member 500 and the gear 400 at the time of starting is reduced to prevent breakage of the flow regulating member 500 and the gear 400.

Next, when the motor is driven at constant speed, it is determined whether the third current I3 due to the rotation load corresponds to a predetermined third overcurrent (S370).

Here, when the third current I3 is greater than the third current upper limit Ip, the third current I3 corresponds to a third overcurrent.

If the third current I3 does not correspond to the third overcurrent, the first difference value, which is a difference value between the current rotation position P and the target rotation position Po of the motor, and the target rotation position ( The second difference value, which is the difference value between P) and the initial rotational position P1 of the motor, is again compared.

When the third current I3 corresponds to the third overcurrent, a correction operation on the motor 300 is performed (S380).

 The correction operation of the motor 300 is a stop operation step in which the motor 300 maintains a stopped state for a first set time, and a position at which the motor 300 is stopped is initially rotated of the motor 300. And saving again.

Of course, the present invention is not limited thereto, and the correction operation of the motor 300 may include an opposite direction driving step in which the motor rotates by the first set rotation range in the opposite direction.

As a result, after the foreign matter is caught between the duct and the flow control member 500, or if excessive force is used in the motor 300 for other reasons, after detecting the overcurrent of the motor 300, based on this By stopping for a predetermined time or rotating by a predetermined rotation range it is possible to reduce the excessive load applied to the flow control member 500 and the gear 400, thereby the flow control member 500 and the gear 400 ) Can be prevented from being damaged.

As described above, the present invention is not limited to the above-described specific preferred embodiments, and various modifications may be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. It is possible and such variations are within the scope of the present invention.

100: motor control unit 110: overload detection unit
120: position detection unit 130: speed control unit
140: position control unit 150: converter unit
210: signal input unit 220: overcurrent detection unit
230: encoder 240: variable resistance adjustment unit
250: amplifier 300: motor
400: gear 500: flow control member

Claims (10)

In controlling the drive system for automatic building control equipment for stable system operation,
A motor driving step of driving a motor based on an input signal; And,
Torque adjustment step of setting the maximum torque of the motor to match the rotational load connected to the motor,
The torque adjusting step may include generating a current according to the rotation load and a voltage according to the current while the motor is rotating;
Amplifying the voltage using an amplifier;
Determining whether the current corresponds to a preset overcurrent;
Determining whether the torque applied to the motor is a set torque value when the current corresponds to the overcurrent;
And a variable resistance adjustment step of adjusting an amplification ratio of the voltage through a variable resistance adjustment when the torque is not the set torque value. The method of claim 1,
And a moving range setting step of setting the range of rotational movement of the motor. The method of claim 2,
The moving range setting step may include checking whether a first current generated by a rotational load corresponds to a first overcurrent while the motor rotates counterclockwise;
If the first current corresponds to the first overcurrent, stopping the operation of the motor and storing a first set range value;
Rotating the motor clockwise after the first set range value is stored;
Checking whether a second current generated by the rotation load corresponds to a second overcurrent while the motor rotates in a clockwise direction;
If the second current corresponds to the second overcurrent, stopping the operation of the motor, and storing a second set range value. The method of claim 3,
The moving range setting step further includes a speed counting step of counting the rotation speed of the motor when the motor is rotated clockwise after the first setting range value is stored. Control method of drive system for automatic control equipment. 5. The method of claim 4,
The first set range value is stored as 0, the second set range value is stored as 100, and the rotation speed of the motor is increased when the second current corresponds to the second overcurrent. Control method of the drive device for automatic building control equipment for stable system operation, characterized in that corresponding to the second set range value. The method according to any one of claims 1 to 5,
And a driving mode control step of controlling a driving mode with respect to the rotational speed of the motor according to the rotational position of the motor for driving the flow regulating member. The method according to claim 6,
The operation mode control step
Comparing a current rotational position and a target rotational position of the motor;
If the current rotational position and the target rotational position do not coincide with each other, a first difference value, which is a difference between the current rotational position and the target rotational position, and a second difference value between the target rotational position and the initial rotational position of the motor. Comparing the difference values,
A deceleration driving step in which the motor is decelerated and operated if the difference between the second difference value and the first difference value is less than or equal to a set difference value;
If the difference between the second difference value and the first difference value is greater than the set difference value, the motor includes a constant speed operation step of driving at a constant speed. Way. The method of claim 7, wherein
The operation mode control step may include determining whether a third current caused by the rotation load corresponds to a third predetermined overcurrent when the motor is driven at constant speed, and when the third current corresponds to the third overcurrent. The control method of the drive device for automatic building control equipment for stable system operation, characterized in that it further comprises a correction operation step of the correction operation. 9. The method of claim 8,
The correction operation step includes a stop operation step in which the motor maintains a stop state for a first set time, and a step of storing the position where the motor is stopped again as an initial rotation position of the motor. Control method of driving device for building automatic control equipment for operation. 9. The method of claim 8,
The correcting operation step is a control method of a drive system for automatic control equipment for a building for stable system operation, characterized in that the motor comprises a reverse direction operation step to move the rotation in the opposite direction by the first set rotation range.

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