KR100789113B1 - Control apparatus of velocity proportional synchronization for floor machine - Google Patents

Abstract

A control apparatus of velocity proportional synchronization for a floor machine is provided to communicate by digital signals by performing PROFIBUS between a PLC and plural inverters. A control apparatus of velocity proportional synchronization for a floor machine includes a stage control chamber PC(110), a PLC(120), a master inverter(131), slave inverters(132,133), a master motor(141) and slave motors(142,143). The stage control chamber PC selects plural stage machines to be controlled, sets up the speed and the target position of the selected stage machine and inputs a proportional synchronization mode order. The master motor is connected to the master inverter and is driven by the master motor driving control current output from the master inverter. The slaver motors are driven by the slaver motor driving control current output from the slave inverter.

Description

Control Apparatus of Velocity Proportional Synchronization for Floor Machine}

1 is a state diagram used by the stage set control device according to the prior art.

2 is a block diagram of a stage machine speed proportional synchronization control device according to an embodiment of the present invention.

FIG. 3 is a detailed configuration diagram of an input unit of the stage adjusting room PC in FIG. 2.

4 is a detailed configuration diagram of the PLC in FIG. 2.

FIG. 5 is a detailed configuration diagram of the control board in FIG. 4.

6 is a detailed configuration diagram of the calculation unit in FIG. 5.

7 is a flowchart illustrating a proportional synchronous control method using a stage machine speed proportional synchronous control apparatus according to an embodiment of the present invention.

8 is an operational state diagram of the stage machine by the stage machine speed proportional synchronization control device according to an embodiment of the present invention.

          Explanation of symbols on the main parts of the drawings

110; Stage Control Room PC

111a, 111b, 111c; Stage Machine Selection

112a, 112b, 112c; Speed setting part

113a, 113b, 113c, 113a ', 113b', 113c '; Goal position setting part

114, 114 '; Target position selector 115; Group operation selector

116; Proportional synchronization mode selection unit 117; 'Run control signal input unit'

120; PLC 131; Master Inverter

132,133; Slave inverter 141; Master motor

142,143; Slave motor 151; Master encoder

152,153; Slave encoder 410; Ethernet communication board

420; PLC control board 430; Profibus Communication Board

510; CPU 512; Calculator

514; Storage 516; Master inverter selector

610; Moving distance calculating unit 612; Conversion calculation unit

The present invention relates to a stage machine control apparatus, and in particular, to communicate by digital signals through PROFIBUS communication between a PLC and a plurality of inverters, and automatically selects a master inverter from a PLC among a plurality of inverters and slave inverters. Speed proportional synchronization so that the gears move in proportion to the movement distance and speed of the master inverter and their own travel distance, so that multiple stage machines can stop at the same time at the same time at the target position. A synchronous control device.

In general, in a large stage performance, various sets of backgrounds (eg, mountains, trees, birds, etc.) used for the performance, such as LAC lighting fixtures, are attached to a batten or a hoist, or a medal is performed. The barton or hoist is lifted by a drive motor under the control of an inverter and a programmable logic controller (PLC).

1 shows a state diagram of use by a stage set control device according to the prior art.

In the operation control of a stage machine such as the bartons t1, t2, and t3 according to the prior art, when driving several stage machines such as the barton t1 at the same time, the bartons t1, t2, t3 are simultaneously displayed at the same time. There may be times when you need to present the medallion stage sets (eg, mountains, trees, birds, etc.) at the same time.

However, in the stage machine control apparatus according to the prior art, the characteristics of the inverter 13 and the motor 14 are different, and in many cases, a plurality of bartons t1, t2, t3 operating at the same time cannot be simultaneously viewed.

In other words, the barton (t1, t2, t3) could not be identified at the same time, even though it must be stopped at the same time and convey the unified stage set or stage background in one scene. There was a problem that can not provide a lively and harmonious background.

As a result, there was a problem that it was not possible to cope with the performance culture of the performance hall, which was becoming increasingly colorful and large.

The present invention was created to solve the problems of the prior art as described above. The purpose of the stage machine speed proportional synchronization control apparatus according to the present invention is to communicate with a digital signal through a PROFIBUS communication between a PLC and a plurality of inverters. It is possible to communicate with each other, and the master inverter is automatically selected from PLC among several inverters, and the slave inverters are proportionally synchronized to move in proportion to the movement distance and speed of the master inverter and their own movement distance. It is to provide a stage machine speed proportional synchronization control device suitable for being able to stop at the same time at the same time.

The stage machine speed proportional synchronization control apparatus of the present invention for achieving the above object, selecting a plurality of stage machines of the operation control target, set the speed and the target position of the selected stage machine, and inputs a proportional synchronization mode command It is operated based on the 'PLC run control signal' received from the stage control room PC and the stage control room PC, receives the ID, speed data and target position data of the selected stage machine from the stage control room PC, and receives the received target position data. Calculates the moving distance that the selected stage machine should move based on the conversion, converts the received speed data and the calculated moving distance into data that an inverter can recognize, and converts the calculated moving distance and speed data. And store to the selected stage machine based on the proportional sync mode command received from the stage control room PC. A PLC which selects a master inverter among the connected inverters, transmits a master selection signal to the inverter selected as the master inverter, and outputs an inverter run control signal to a plurality of inverters corresponding to the selected stage machine, the inverter received from the PLC A master inverter which is operated based on a run control signal, receives a master selection signal from the PLC, speed data and movement distance data of the stage machine, and outputs a master motor driving control current based on the received data; and an inverter from the PLC When the run control signal is received, the stage machine connected to the master inverter is read by reading the movement distance and the speed data of the master inverter and its own movement distance stored in the PLC, and the connected stage machine is based on the read data. Calculate the moving speed according to its moving distance to stop at the same time A slave inverter for outputting a slave motor driving control current based on the same speed and controlling the speed proportional synchronously, a master motor connected to the master inverter and driven by a master motor driving control current output from the master inverter, and connected to the slave inverter And a slave motor driven by a slave motor drive control current output from the slave inverter.

In the stage machine speed proportional synchronization control device according to the present invention, a stage machine selection unit for selecting a plurality of stage machines that are operation control targets and a speed setting for setting and inputting speeds for the plurality of stage machines are provided in the stage adjusting room PC. A target position setting unit for setting and inputting target positions for the plurality of stage machines, a target position selecting unit for selecting a target position to be executed from among the target positions set by the target position setting unit, and a proportional synchronization mode command. And a key input unit including a proportional synchronous mode selection unit for setting input and a PLC 'run control signal input unit' for inputting an operation command of the PLC.

In accordance with an aspect of the present invention, there is provided a speed proportional synchronization control device for a stage machine, wherein the PLC performs Ethernet communication with the stage control room PC to transmit an ID, a speed data, a target position data, a proportional synchronous mode command signal and a ' An Ethernet communication board that receives data and commands including a PLC run control signal, and calculates a moving distance that the selected stage machine should move based on the target position data received from the Ethernet communication board, and receives the received speed data and the Converts the calculated movement distance into data that can be recognized and processed by the inverter, stores the converted movement distance and speed data, and transmits to the selected stage machine based on the proportional synchronous mode command received from the stage control room PC. PLC control board for selecting a master inverter from a plurality of connected inverters, the control of the PLC control board And PROFIBUS communication with the master inverter and the slave inverter to transmit the master selection signal and the speed data and the movement distance data of the stage machine connected to the master inverter to the master inverter, and run the inverter with the master inverter and the slave inverter. Characterized in that the PROFIBUS communication board for transmitting a control signal.

In accordance with an aspect of the present invention, there is provided a speed proportional synchronization control device for a stage machine, wherein the PLC control board includes: a CPU controlling data storage, operation, and transmission and reception by the Ethernet communication board and the PROFIBUS communication board; and the Ethernet under control of the CPU. An operation unit for calculating a moving distance that the selected stage machine should move based on the target position data received from the communication board, and converting the received speed data and the calculated moving distance into data that an inverter can recognize and process; A storage unit for storing the converted operation distance and speed data, and a master for selecting a master inverter among a plurality of inverters connected to the stage machine selected based on the proportional synchronization mode command received from the Ethernet communication board under control of the CPU. Characterized in that the inverter selection unit.

In the stage machine speed proportional synchronization control apparatus according to the present invention, the operation unit is a movement distance calculation unit for calculating the movement distance that the selected stage machine should move based on the target position data received from the Ethernet communication board under the control of the CPU And a conversion calculation unit configured to convert the speed data received from the Ethernet communication board and the moving distance calculated by the moving distance calculating unit into data that can be recognized and processed by an inverter under the control of the CPU. .

In the stage machine speed proportional synchronization control apparatus according to the present invention, the moving distance calculating unit subtracts the current position of the selected stage machine and the received target position by the control of the CPU from the inverters connected to the selected stage machine. It is characterized by performing calculation by operation.

In the stage machine speed proportional synchronization control apparatus according to the present invention, the master inverter selecting unit selects an inverter connected to the stage machine having the longest movement distance from the movement distances calculated by the calculating unit as a master inverter.

In the stage machine speed proportional synchronization control apparatus according to the present invention, the slave inverter, the movement speed calculation of the master inverter based on the movement distance and the speed data of the master inverter, the movement distance and the speed data of the master inverter It is characterized by the calculation based on the proportional relationship between its own moving distance and its own moving speed.

The following will be described in detail with reference to the accompanying drawings, preferred embodiments of the present invention, the stage machine speed proportional synchronization control device.

2 is a block diagram of a stage machine speed proportional synchronization control device according to an embodiment of the present invention.

As shown in FIG. 2, the apparatus 100 for speed proportional synchronization control according to an embodiment of the present invention includes a stage adjusting room PC 110, a PLC 120, a master inverter 131, and a slave inverter 132, 133. ) And the master motor 141 and the slave motors 142 and 143.

The stage adjusting room PC 110 selects a plurality of stage machines which are the operation control targets, and selects a speed and a target position H3 of the selected stage machine (a target position for moving the stage machine, that is, a target position = current position + movement). Distance) and input the proportional synchronous mode command.

The target position means the distance from the floor (stage floor).

The PLC 120 is operated based on the 'PLC run control signal' received from the stage adjusting room PC 110, and outputs the ID, speed data, and target position data of the selected stage machine from the stage adjusting room PC 110. Receives, calculates the moving distance (H2) that the selected stage machine should move based on the received target position data, and the inverter can process the received speed data and the calculated moving distance (H2) Converting data into data, storing the converted travel distance H2 and speed data, and mastering the plurality of inverters connected to the selected stage machine based on the proportional synchronous mode command received from the stage adjusting room PC 110. Select the inverter, send the master selection signal to the inverter selected by the master inverter, and output the inverter run control signal to a plurality of inverters corresponding to the selected stage machine do.

The master inverter 131 is driven based on the inverter run control signal received from the PLC 120, the master selection signal from the PLC 120, the speed data Va and the moving distance data H2a of the stage machine. ) And outputs the master motor drive control current based on the received data.

When the slave inverters 132 and 133 receive the inverter run control signal from the PLC 120, the slave inverters 132 and 133 move the distance H2a and the speed data Va of the master inverter stored in the PLC 120 and their own. Read the moving distances H2b and H2c, and the moving speed according to the moving distances H2b and H2c so that the stage machine connected based on the read data stops simultaneously with the stage machine connected to the master inverter 131. The speed proportional synchronous control is performed by outputting the slave motor drive control current based on the calculated moving speed.

The slave inverters 132 and 133 may calculate their own movement speed based on the movement distance H2a and the speed data Va of the master inverter and their movement distances H2b and H2c. It is characterized in that it is calculated based on the proportional relationship between the distance H2a and the speed data Va versus its own moving distances H2b and H2c and its own moving speed.

The master motor 141 is connected to the master inverter 131 and is driven by a master motor driving control current output from the master inverter 131.

The slave motors 142 and 143 are connected to the slave inverters 132 and 133 and are driven by slave motor driving control currents output from the slave inverters 132 and 133.

On the other hand, the stage machine speed proportional synchronization control apparatus 100 according to an embodiment of the present invention, may further comprise a master encoder 151 and a slave encoder (152,153).

The master encoder 151 is provided in the master motor 141 and detects the rotational speed of the master motor 141 and transmits it to the master inverter 131.

The slave encoders 152 and 153 are provided in the slave motors 142 and 143 to detect the rotation speed of the slave motors 142 and 143.

3 is a detailed configuration diagram of the input unit of the stage adjusting room PC 110.

As shown in FIG. 3, the stage adjusting room PC 110 includes stage machine selecting units 111a, 111b, and 111c for selecting a plurality of stage machines which are subject to operation control. T1), Barton2 (T2), Barton3 (T3) is illustrated as a configuration for selecting) and the speed setting unit for setting and inputting the speed for the plurality of stage machines Barton (T1, T2, T3) 112a, 112b and 112c, target position setting units 113a, 113b, 113c, 113a ', 113b', and 113c 'for setting and inputting target positions for the plurality of stage machines; and the target position setting unit. A target position selector 114, 114 'for selecting a target position to be executed from among the target positions set by (113a, 113b, 113c, 113a', 113b ', 113c'), and selecting group operation / individual operation. The group operation setting unit 115 for setting, the proportional synchronization mode selecting unit 116 for setting and inputting the proportional synchronization mode command, and the operation of the PLC 120 A key input unit including a 'run control signal input unit' 117 for inputting a command and a 'stop control signal input unit' 118 for inputting a stop control signal for stopping operation of the PLC; It is characterized by being.

4 is a detailed configuration diagram of the PLC 120.

As shown in FIG. 4, the PLC 120 includes an Ethernet communication board 410, a PLC control board 420, and a PROFIBUS communication board 430.

The Ethernet communication board 410 performs the Ethernet communication with the stage control room PC 110 to transmit the stage machine ID (eg, Barton 1, Barton 2, Barton 3), speed data, and target position from the stage control room PC 110. Receive data and command including data and proportional synchronous mode command signal and 'PLC run control signal'.

The PLC control board 420 calculates the movement distance H2 at which the selected stage machine should move based on the target position data received from the Ethernet communication board 410, and receives the velocity data and the calculated movement. Convert the distance H2 into data that the inverter can recognize and process, store the converted calculated travel distance H2 and speed data, and base the proportional synchronous mode command received from the stage control room PC 110. By controlling the entire PLC 120 to select a master inverter from a plurality of inverters connected to the selected stage machine.

The Profibus communication board 430 communicates with the master inverter 131 and the slave inverters 132 and 133 under the control of the PLC control board 420 and communicates with the master inverter 131 to the master selection signal and the master. The speed data Va and the movement distance data H2a of the stage machine connected to the inverter are transmitted, and the inverter run control signal is transmitted to the master inverter 131 and the slave inverters 132 and 133.

5 is a detailed configuration diagram of the control board 420.

As shown in FIG. 5, the PLC control board 420 includes a CPU 510, a calculator 512, a storage 514, and a master inverter selector 516.

The CPU 510 controls the storage, operation, and transmission and reception of data by the Ethernet communication board 410 and the PROFIBUS communication board 430.

The operation unit 512 calculates the movement distance H2 at which the selected stage machine should move based on the target position data received from the Ethernet communication board 410 under the control of the CPU 510, and receives the received position. The speed data and the calculated movement distance H2 are converted into data that can be recognized and processed by the inverter.

The storage unit 514 stores the converted operation distance H2 and the speed data.

The master inverter selector 516 is a master inverter 131 of the plurality of inverters connected to the stage machine selected based on the proportional synchronization mode command received from the Ethernet communication board 410 by the control of the CPU 510. Select.

The master inverter selecting unit 516 has a longest moving distance H2a among the moving distances H2 calculated by the calculating unit 512 (more precisely, the moving distance calculating unit 610 to be described below). Selecting the inverter connected to the master inverter

6 shows a detailed configuration diagram of the operation unit 512.

As illustrated in FIG. 6, the calculator 512 includes a movement distance calculator 610 and a transform operator 612.

The movement distance calculator 610 calculates the movement distance H2 to which the selected stage machine should move based on the target position data received from the Ethernet communication board 410 under the control of the CPU 510.

The conversion operator 612 recognizes the speed data received from the Ethernet communication board 410 and the movement distance H2 calculated by the movement distance calculator 610 under the control of the CPU 510. Convert to data that can be processed.

The movement distance calculating unit 610, the current position (H1) and the received position of the selected stage machine read by the control of the CPU 510 from the inverter (system ready or standby state inverter) connected to the selected stage machine It is characterized by performing calculation by the subtraction arithmetic operation of the target position H3.

The following describes the operation process of the stage machine speed proportional synchronization controller of the present invention having the configuration as described above.

FIG. 7 is a flowchart illustrating a proportional synchronous control method using a stage machine speed proportional synchronous control device according to an embodiment of the present invention, and FIG. 8 illustrates a stage machine speed proportional synchronous control device according to an embodiment of the present invention. The operation state diagram of the stage machine is shown.

In the stage machine speed proportional synchronization control apparatus according to the present invention, data and signals are transmitted and received by Ethernet communication between the stage adjusting room PC 110 and the PLC 120, and the PLC 120 and the inverters 131, 132, and 133. ) Is characterized in that data and signals are transmitted and received by PROFIBUS communication.

The user selects a stage machine, for example, Barton 1 (T1), Barton 2 (T2), Barton 3 (T3), which is to be operated through an input unit provided in the stage adjusting room PC 110, and the stage machine selection units 111a, 111b, and 111c. (S710), the speed setting unit (112a, 112b, 112c) through each stage machine speed (for example, 80%, where 80% means 80% of the maximum motor output, of course) The target position setting unit 113a, 113b, 113c, 113a ', 113b', and 113c 'is set in advance to set a target position (height from the floor) where the barons are to be placed (S712).

The target to be actually operated from the target positions set by the target position setting units 113a, 113b, 113c, 113a ', 113b', and 113c 'through the target position selection units 114 and 114'. To select a position (eg, target position 1 (for example, Barton 1 is 15000 mm, Barton 2 is 12000 mm, Barton 3 is 10000 mm), press target position selection unit 114, and select target position 2. Press the target position selector 114 ') (S714).

After selecting the group operation (operation mode when operating three bar (T1, T2, T3) at the same time) (S716), the proportional synchronous mode is selected through the proportional synchronous mode selection unit 116 to select the proportional synchronous mode ( According to the present invention, a command is input to execute a stage machine (for example, an operation mode for simultaneously stopping the barton 1, the barton 2, and the barton 3 at the same time at the desired target position) (S718), and the 'run control signal input unit' ( Input the 'PLC run control signal' through 117) (S720).

Receiving the data and the command including the stage machine ID, the speed data, the target position data, the proportional synchronous mode command signal and the run control signal from the stage control room PC 110 by performing Ethernet communication with the stage control room PC 110. The Ethernet communication board 410 transmits this to the PLC control board 420.

The PLC control board 420 calculates the movement distance H2 at which the selected stage machine should move based on the target position data received from the Ethernet communication board 410, and receives the velocity data and the calculated movement. Convert the distance H2 into data that the inverter can recognize and process, store the converted calculated travel distance H2 and speed data, and base the proportional synchronous mode command received from the stage control room PC 110. Selects a master inverter from a plurality of inverters connected to the selected stage machine.

The operation of the PLC control board 420 will be described in more detail.

The movement distance calculator 610 calculates the movement distance H2 to which the selected stage machine should move based on the target position data received from the Ethernet communication board 410 under the control of the CPU 510.

The calculation method of the movement distance calculating unit 610 is the current position (H1) and the reception of the selected stage machine read by the control of the CPU 510 from the inverter (system ready or standby state inverter) connected to the selected stage machine The operation is performed by subtraction arithmetic at one target position H3. That is, the arithmetic operation is performed based on the movement distance H2 = the target position H3-the current position H1.

Table 1

Barton 1 (T1) (mm) Barton 2 (T2) (mm) Barton 3 (T3) (mm) Current position (H1) 3000 2000 1000 Target position (H3) 15000 12000 10000 Travel distance (H2) 12000 (H2a) 10000 (H2b) 9000 (H2c)

Table 1 shows example data calculated by the moving distance calculator 610 for each bar. It goes without saying that the distances or positions are all from the floor F.

The conversion operator 612 recognizes the speed data received from the Ethernet communication board 410 and the movement distance H2 calculated by the movement distance calculator 610 under the control of the CPU 510. The conversion operation is performed to the data that can be processed. In more detail, the speed data is converted into data having further improved resolution, and the target position data is converted into pulse data of the encoder (S722).

The storage unit 514 stores the converted operation distance H2 and the speed data (S724).

The master inverter selecting unit 516 is a master inverter 131 of the plurality of inverters connected to the stage machine selected based on the proportional synchronous mode command received from the Ethernet communication board 410 by the control of the CPU 510. (S726).

On the other hand, the master inverter selection unit 516 designates the master inverter 131, the stage machine having the longest movement distance (H2a) of the movement distance (H2) calculated by the movement distance calculation unit 610 Select the inverter connected to (Barton) as the master inverter.

After completing selection of the master inverter as described above, the PROFIBUS communication board 430 communicates with the PROFIBUS with the master inverter 131 and the slave inverters 132 and 133 under the control of the PLC control board 420. The master selector 131 transmits the master selection signal and the speed data Va and the movement distance data H2a of the stage machine connected to the master inverter, and the inverters to the master inverter 131 and the slave inverters 132 and 133. The run control signal is transmitted (S728).

The master inverter 131 is driven based on the inverter run control signal received from the PLC 120, and moves with the master selection signal and the speed data Va of the stage machine (Barton 1) from the PLC 120. Upon receiving the distance data H2a, the master motor driving control current is output to the master driving motor 141 to move the baton 1 (T1) based on the received data (S730).

When the slave inverters 132 and 133 receive the inverter run control signal from the PLC 120, the slave inverters 132 and 133 may move the distance H2a and the speed data Va of the master inverter stored in the PLC 120. It reads its own travel distance (H2b, H2c), and based on the read data, its own travel distance (H2b, H2c) so that the stage machine connected at the same time stops with the stage machine connected to the master inverter (131). The speed proportional synchronous control is performed by calculating the movement speed according to the controller and outputting a slave motor driving control current based on the calculated movement speed (S732).

The movement speed calculations of the bartons 2 and 3 are calculated based on the proportional relationship between the movement distance H2a and the speed data Va of the master inverter versus the movement distances H2b and H2c of the master inverter.

As described above, when the slave motors 152 and 153 are driven at a rotational speed proportional to the rotational speed of the master motor 151 and the movement distance of the barton 1, all the barons T1, T2, and T3 stop at the same time.

In other words, even if the points where each barton is located, that is, the target positions are different (of course, even if the target positions are all input identically, the result is the same because the slave inverter calculates the speed of the slave motor in proportion), Will be exactly the same.

On the other hand, except for the speed of the master motor connected to the master inverter among the speed input by the user through the input unit of the stage control room PC 110, in the proportional synchronous mode, the speed of the slave motor to the speed proportional control operation by the slave inverter The speed of the slave motor input by the user in this case is virtually meaningless.

However, the user will not know which inverter will be determined as the master, so all the speed settings will be entered.

The above embodiments of the present invention are merely one embodiment of the technical idea of the present invention, and of course, other modifications are possible within the technical idea of the present invention.

Stage machine speed proportional synchronization control device of the present invention having the configuration and operation process as described above has the following effects.

In other words, PROFIBUS communication between PLC and plural inverters enables communication by digital signal, and master inverters are automatically selected from PLC among several inverters so that slave inverters move distance and speed of master inverter and their own. By synchronizing the speed proportional to move in proportion to the moving distance of, it is possible to simultaneously stop at the same time at the target position of several stage machines.

Claims (8)

A stage adjusting room PC (110) for selecting a plurality of stage machines which are operation control targets, setting a speed and a target position (H3) of the selected stage machine, and inputting a proportional synchronous mode command; It is operated based on the 'PLC run control signal' received from the stage adjusting room PC 110, receives the ID and speed data and the target position data of the selected stage machine from the stage adjusting room PC 110, the received target Calculate a movement distance H2 to which the selected stage machine should move based on the position data, convert the received speed data and the calculated movement distance H2 into data that an inverter can recognize, and calculate Stores the converted operation distance (H2) and speed data, selects a master inverter from among a plurality of inverters connected to the selected stage machine based on the proportional synchronization mode command received from the stage control room PC (110), and master inverter A PLC 120 for transmitting a master selection signal to a selected inverter and outputting an inverter run control signal to a plurality of inverters corresponding to the selected stage machine; It is operated based on the inverter run control signal received from the PLC 120, and receives the master selection signal, the speed data Va and the moving distance data H2a of the stage machine from the PLC 120, and received the data. A master inverter 131 for outputting a master motor driving control current based on the control unit; When the inverter run control signal is received from the PLC 120, the movement distance H2a and the speed data Va of the master inverter stored in the PLC 120 are read and their movement distances H2b and H2c are read. (read) and calculates the moving speeds according to the moving distances H2b and H2c so that the stage machine connected based on the read data stops simultaneously with the stage machine connected to the master inverter 131 and based on the calculated movement speed Slave inverters (132, 133) for outputting the slave motor drive control current to control the speed proportional synchronization; A master motor 141 connected to the master inverter 131 and driven by a master motor driving control current output from the master inverter 131; And And a slave motor (142, 143) connected to the slave inverter (132, 133) and driven by a slave motor drive control current output from the slave inverter (132, 133). The method according to claim 1, In the stage adjusting room PC (110), Stage machine selection units 111a, 111b, and 111c for selecting a plurality of stage machines which are operation control objects; Speed setting units (112a, 112b, 112c) for setting and inputting speeds for the plurality of stage machines; Target position setting units 113a, 113b, 113c, 113a ', 113b', and 113c 'for setting and inputting target positions for the plurality of stage machines; A target position selector (114, 114 ') for selecting a target position to be executed among the target positions set by the target position setting units (113a, 113b, 113c, 113a', 113b ', 113c'); A proportional synchronization mode selection unit 116 for setting and inputting a proportional synchronization mode command; And And a key input unit including a PLC 'run control signal input unit' (117) for inputting an operation command of the PLC (120). The method according to claim 2, wherein the PLC 120, The stage control room PC (110) performs Ethernet communication with the stage control room PC (110) to transmit data and commands including the stage machine ID, speed data, target position data, proportional synchronous mode command signal and 'PLC run control signal'. Ethernet communication board 410 for receiving; Based on the target position data received from the Ethernet communication board 410, the moving distance H2 to which the selected stage machine should move is calculated, and the inverter recognizes the received speed data and the calculated moving distance H2. A plurality of transformed operation data to be processed, storing the converted operation distance H2 and velocity data, and connected to the selected stage machine based on the proportional synchronous mode command received from the stage adjusting room PC 110. PLC control board 420 for selecting a master inverter from the inverter of the; PROFIBUS communication with the master inverter 131 and the slave inverters 132 and 133 under the control of the PLC control board 420, the master selection signal of the stage machine connected to the master inverter with the master inverter 131 Characterized in that the PROFIBUS communication board 430 for transmitting the speed data (Va) and the movement distance data (H2a), and transmits the inverter run control signal to the master inverter 131 and the slave inverters (132,133) Stage machine speed proportional synchronous controller. The method of claim 3, wherein the PLC control board 420, CPU 510 for controlling the storage, operation and transmission and reception of data by the Ethernet communication board 410 and PROFIBUS communication board 430; Based on the target position data received from the Ethernet communication board 410 under the control of the CPU 510, the moving distance H2 to which the selected stage machine should move is calculated, and the received speed data and the calculated An operation unit 512 for converting and converting the movement distance H2 into data that the inverter can recognize and process; A storage unit 514 for storing the converted operation distance H2 and speed data; A master inverter selecting unit 516 for selecting a master inverter 131 from a plurality of inverters connected to the stage machine selected based on the proportional synchronization mode command received from the Ethernet communication board 410 by the control of the CPU 510. Stage proportional synchronous control device, characterized in that consisting of. The method of claim 4, wherein the calculation unit 512, A movement distance calculator 610 for calculating a movement distance H2 to which the selected stage machine should move based on the target position data received from the Ethernet communication board 410 under the control of the CPU 510; And Under the control of the CPU 510, the speed data received from the Ethernet communication board 410 and the moving distance H2 calculated by the moving distance calculator 610 are converted into data that an inverter can recognize. Stage machine speed proportional synchronization control device, characterized in that consisting of a conversion calculation unit 612 to calculate. The method of claim 5, wherein the movement distance calculation unit 610, It is characterized in that the operation is performed by subtraction arithmetic operation of the current position (H1) and the received target position (H3) of the selected stage machine read by the control of the CPU 510 from the inverters connected to the selected stage machine Stage machine speed proportional synchronous controller. The method according to claim 6, The master inverter selecting unit 516 selects an inverter connected to the stage machine having the longest moving distance H2a among the moving distances H2 calculated by the calculating unit 512 as a master inverter. Proportional Synchronous Control. The method according to claim 7, wherein the slave inverters (132, 133), The movement speed calculation based on the movement distance H2a and the speed data Va of the master inverter and its movement distances H2b and H2c is based on the movement distance H2a and the speed data Va of the master inverter. Stage machine speed proportional synchronous control device, characterized in that calculated by the proportional relationship between the moving distance (H2b, H2c) and their own moving speed.

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