JPH0751429B2 - Elevator control equipment - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to an elevator control device for controlling the speed of an elevator.

[Prior Art] As a conventional elevator control device of this type, for example, a technique disclosed in Japanese Patent Publication No. 61-22671 can be cited.

FIG. 5 is a block diagram showing an outline of the conventional elevator control device, and FIG. 6 is a characteristic diagram showing a speed control state by the elevator control device.

In the figure, 1 is a microcomputer, which calculates a speed command of an elevator car and a torque command of a motor for driving the car. Reference numeral 2 is a speed command generating means, which generates a speed command from acceleration to deceleration of the elevator car. Then, in particular, when decelerating the elevator car, the microcomputer 1 uses the position detection plate attached to the hoistway of each floor to measure the remaining distance from the floor height value between each floor measured in advance to the stop floor. The speed command generation means 2 generates a speed command corresponding to this remaining distance.

3 is a landing position correction means for correcting the landing position of the elevator car, and the amount of adjustment of the landing position can be obtained by a rotary switch or the like. That is, in the floor height measurement during deceleration of the elevator car, the mounting accuracy of the position detection plates provided on each floor is an important factor for the landing accuracy of the elevator car, and this landing accuracy is improved. In order to do so, a predetermined adjustment amount is set by the landing position correction means 3, and the microcomputer 1 takes in the adjustment amount and calculates the adjustment amount with respect to the reference speed command from the speed command generation means 2 to land. Adjust the position. Reference numeral 4 denotes a motor torque command generating means, which calculates a motor torque command based on the adjusted speed command and drives and controls the motor for the elevator car.

Next, the operation of the elevator control device configured as described above will be described.

When adjusting the landing position of the elevator car, if a predetermined adjustment amount is set by the landing position correcting means 3, as shown in FIG. 6, the reference speed command 5 from the speed command generating means 2 is obtained. On the other hand, this adjustment amount is added to create a speed command that is a uniform shift of the reference speed command 5, and the landing position is adjusted. That is, 6 indicates a speed command when the shift amount 7 is taken in as a negative value and added to the reference speed command 5, and the speed command is lower than the reference speed command 5. As a result, the elevator car can be stopped before the floor as compared with the case of the reference speed command 5. Also, for 8 the shift amount 9 is taken in as a positive value,
It shows a speed command when added to the reference speed command 5, and is a speed command higher than the reference speed command 5.
As a result, the elevator car can be stopped too far beyond the case of the reference speed command 5.

[Problems to be Solved by the Invention] However, in this conventional elevator control device,
In order to adjust the landing position for each floor, as the landing position correcting means 3, it is necessary to provide as many rotary switches as the number of floors, which leads to an increase in hardware cost. To avoid this trick
If it is configured to adjust all floors by one rotary switch etc., the shift amount becomes the same over all floors, and depending on the position of the position detection plate handled in the hoistway of each floor, The landing accuracy may deteriorate. Therefore, it is necessary to accurately attach the position detection plate on each floor, which makes installation and maintenance difficult.

Further, even if the load of the elevator car is the same, the landing position is likely to deviate between the uppermost floor and the lowermost floor due to the difference in the amount of rope unbalance.

On the other hand, as another prior art, there is a technology disclosed in Japanese Patent Laid-Open No. 62-111880. The technology disclosed in this publication is a non-volatile second memory different from the first memory used for normal operation, a program for writing to the second memory, and a program in the second memory. Disclosed is an elevator control device including means for using a writing program when not using. However, this technology stores the programs and data according to the installed elevator environment so that the data adjusted after the delivery of the elevator can be stored safely and with high reliability, and the manufacturability can be improved. Yes, it is necessary to prepare programs and various data to be produced in the factory, various data set in the field and the programs, and it is necessary to prepare programs with a lot of waste. Especially, in the process of correcting the deviation of the landing position. As a method, there is a problem that the cost becomes expensive.

Therefore, according to the present invention, it is possible to obtain a high landing accuracy for each floor over all floors, and further, it is possible to reduce the cost of hardware and to easily perform installation and maintenance. It is an object of the present invention to provide a control device of the above.

[Means for Solving the Problems] An elevator control device according to the present invention includes a motor for traveling and moving an elevator car between a plurality of floors, and a speed command generating means for generating a reference speed command for the elevator car, A rewritable memory that stores the correction data of the landing position at the time of deceleration of the elevator car for each floor, and the correction data of the memory from outside, and the landing of the elevator car during the installation or maintenance of the elevator. When the position is adjusted for each floor and the elevator car is stopped at the designated floor by rewriting the position, the correction data of the landing position corresponding to the designated floor is read from the memory, and the correction data is read. The reference speed command from the speed command generating means is adjusted based on the above, and the motor is driven and controlled by the adjusted speed command. And a control means for performing the operation.

[Operation] In the present invention, the correction data of the landing position during deceleration of the elevator car stored in the memory is adjusted for each floor by adjusting the landing position of the elevator car during elevator installation or maintenance. It is possible to rewrite each floor by the rewriting means. For this reason, since the position detection plate is not installed accurately on each floor, there is variation in the landing accuracy of each floor, the load condition of the elevator car, or even if the elevator car is under the same load condition, the top floor Even if the landing position deviates between the floor and the lowest floor due to the difference in the amount of unbalance of ropes, the landing position can be adjusted for each floor to improve the landing accuracy.

Then, when the elevator car is stopped on the designated floor, the correction data of the landing position corresponding to the designated floor is extracted from the memory, and the reference speed command from the speed command generating means is adjusted based on the correction data. The motor is drive-controlled by the adjusted speed command, and the elevator car is accurately stopped at the landing position on the designated floor.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 is a block diagram of an elevator control apparatus according to an embodiment of the present invention, FIG. 2 is a configuration diagram showing an entire elevator control apparatus according to an embodiment of the present invention, and FIG. 3 is a block diagram of FIG. 4 is an explanatory view showing a data storage state in the memory of FIG. 4, and FIG. 4 is a flow chart of a "stop control routine" for explaining the operation of the elevator control apparatus according to the embodiment of the present invention. In the drawings, the same reference numerals and symbols as those of the conventional example indicate the same or corresponding portions as those of the conventional example, and therefore, duplicated description will be omitted here.

In FIG. 2, 11 is a three-phase AC power supply and 12 is a three-phase AC power supply.
Thyristor connected to 11, 13 is a motor connected to thyristor 12, 14 is a sheave of a hoist driven by motor 13, 15 is a rope wound around sheave 14, 16 is an elevator car, 17 is It is a counterweight.

18 is a tachogenerator directly connected to the motor 13,
A speed feedback signal 19 corresponding to the speed of the motor 13 is output to the microcomputer 1. Further, a motor torque command signal 20 is output from the microcomputer 1 to the thyristor 12, and the thyristor 12 is on / off controlled by this output signal. 21 is a position detection plate provided in the hoistway on each floor, 22 is a position detection plate 21
The position detection device 23 is provided in the elevator car 16 in correspondence with the position detection signal 23 of the elevator car and is output to the microcomputer 1.

In FIG. 1, 2 is a speed command generating means for generating a speed command from acceleration to deceleration of an elevator car as in the conventional example, and 24 is a memory EEPROM capable of rewriting stored data, as shown in FIG. Further, the correction data of the landing position at the time of deceleration of the elevator car 16 is stored for each floor. Reference numeral 25 is a rewriting means for rewriting the data in the memory 24 from the outside, and it is possible to change the correction data of the landing position stored in the memory 24 for each floor during the installation and maintenance of the elevator.

Then, the microcomputer 1 as the control means is
When stopping the elevator car 16 on the designated floor, the correction data of the landing position corresponding to the designated floor is extracted from the memory 24, and the reference speed command from the speed command generating means 2 is based on the correction data. It is supposed to be adjusted.
4 is a motor torque command generating means similar to the conventional example,
A motor torque command signal 20 is generated by calculating a motor torque command based on the adjusted speed command.

Next, the operation of the elevator control device of this embodiment configured as described above will be described.

Now, in the elevator control device of this embodiment, during installation and maintenance of the elevator, while stopping the elevator car 16 on each floor, the correction data of the landing position stored in the memory 24, by the rewriting means 25. It is changed and set in advance for each floor. When the elevator is in operation, under the control of the microcomputer 1, the operation shown in the flowchart of the "stop control routine" of FIG. 4 is performed.

That is, the presence or absence of the determination of the stop floor of the elevator car 16 is determined in step S1, and the presence or absence of a deceleration command is determined in step S2, and if those conditions are not satisfied, the shift amount of the speed command in step S3. Vs is set to 0. On the other hand, when the conditions of step S1 and step S2 are satisfied, the shift amount Vs corresponding to the target stop floor is extracted from the memory 24 in step S4. Next steps
In S5, the reference speed command Vp from the speed command generation means 2
And the shift amount Vs are added to create a speed command value Vps. Then, based on this speed command value Vps, the motor torque command generation means 4 calculates a motor torque command to generate a motor torque command signal 20.
The motor 13 is drive-controlled at 20.

In this way, the elevator control device of the above-described embodiment is a motor for moving the elevator car 16 between a plurality of floors.
13, a speed command generating means 2 for generating a reference speed command for the elevator car 16, a rewritable memory 24 for storing the correction data of the landing position during deceleration of the elevator car 16 for each floor, and its memory 24. When the elevator car 16 is stopped at the designated floor, and the rewriting means 25 for rewriting the data of the above from the outside, the correction data of the landing position corresponding to the designated floor is extracted from the memory 24, and the correction data The control means 1 adjusts the reference speed command from the speed command generating means 2 based on the above, and controls the drive of the motor 13 by the adjusted speed command.

Therefore, since the position detection plate is not attached accurately on each floor, there is variation in the landing accuracy of each floor, and under the same load condition of the elevator car, the rope between the top floor and the bottom floor Even if there is a difference in the landing position due to the difference in the unbalance amount of
During installation or maintenance of the elevator, the landing position of the elevator car can be adjusted for each floor to improve the landing accuracy.

Further, since it is not necessary to provide as many rotary switches as the number of floors in order to correct the landing position of each floor, the cost of hardware can be reduced.
Moreover, since it is not necessary to increase the mounting accuracy of the position detection plate provided in the hoistway of each floor, the elevator can be easily installed and maintained.

[Advantages of the Invention] As described above, the elevator control device of the present invention includes a motor for traveling the elevator car between a plurality of floors, a speed command generating means for generating a reference speed command for the elevator car, and an elevator. A rewritable memory that adjusts the flooring position correction data during deceleration of the car, adjusts the flooring position of the elevator car for each floor during installation or maintenance of the elevator, and stores it for each floor, and the memory. When the elevator car and the elevator car are stopped at the designated floor, the correction data of the landing position corresponding to the designated floor is extracted from the memory and the speed command is generated based on the correction data. And a control means for adjusting the reference speed command from the means and controlling the drive of the motor according to the adjusted speed command. Therefore, the correction data of the landing position at the time of deceleration of the elevator car stored in the memory can be rewritten for each floor by the rewriting means, and the landing position can be adjusted for each floor to obtain the landing accuracy. Can be increased.

Then, when the elevator car is stopped on the designated floor, the correction data of the landing position corresponding to the designated floor is extracted from the memory, and the reference speed command from the speed command generating means is adjusted based on the correction data. , The motor is driven and controlled by the adjusted speed command, and the elevator car is accurately stopped at the landing position of the designated floor, so it is possible to obtain high landing accuracy for each floor over all floors. it can.

In addition, the configuration required for these controls can be handled by software, and by slightly expanding the memory area, the cost of hardware can be reduced and the installation and maintenance can be easily performed. it can.

[Brief description of drawings]

1 is a block diagram of an elevator control apparatus according to an embodiment of the present invention, FIG. 2 is a configuration diagram showing an entire elevator control apparatus according to an embodiment of the present invention, and FIG. 3 is a block diagram of FIG. FIG. 4 is an explanatory view showing a data storage state in the memory, and FIG. 4 is a "stop control routine" for explaining the operation.
5 is a block diagram of a conventional control device, and FIG. 6 is a characteristic diagram showing a speed control state by the conventional control device. In the figure, 1: microcomputer (control means) ,: speed command generation means, 13: motor, 16: elevator car, 24: memory, 25:
It is a rewriting means. In the drawings, the same reference numerals and symbols indicate the same or corresponding constituent parts.

Claims (1)

[Claims] 1. A motor for moving an elevator car between a plurality of floors, a speed command generating means for generating a reference speed command for the elevator car, and correction data for a landing position when decelerating the elevator car. , A rewritable memory that stores it for each floor, and a rewriting unit that adjusts the landing position of the elevator car for each floor at the time of installation or maintenance of the elevator from the outside by the correction data of the memory, and rewrites it And when stopping the elevator car on the designated floor, read the correction data of the landing position corresponding to the designated floor from the memory, and adjust the reference speed command from the speed command generation means based on the correction data. And a control means for driving and controlling the motor according to the adjusted speed command. Control device.