JPH08324903A - Controller for elevator - Google Patents

Abstract

PURPOSE: To provide an elevator controller by which the elevator can be stopped precisely at a landing level of a destination floor, regardless of expansion/ contraction of a main rope generated after the elevator enters a landing zone. CONSTITUTION: When a first landing switch, which detects that an elevator car enters a landing zone, acts, a speed pattern change-over computing means 26 selects a car position landing pattern 28a, which is computed by a car position landing pattern computing means 28. When a second landing switch, which detects that the car enters a prescribed position of the destination floor after the case entered the landing zone, acts, the means 26 selects a motor shaft position landing pattern 30a, which is computed by a motor shaft position landing pattern computing means 30. In addition, a speed control computing means 35 controls the speed of the car, based on the landing pattern selected by the pattern change-over computing means 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is based on a landing pattern proportional to the difference between the current position of a motor shaft for driving a car and a target position when the car enters the landing zone of each floor. And an elevator control device for controlling the speed of a car.

[0002]

2. Description of the Related Art Generally, an elevator controller 17 is constructed as shown in FIG. Speed command generator 1
Outputs the speed command 1a of the car 2,
The speed command 1a is given to the speed control amplifier 3. The speed control amplifier 3 calculates a current designation 3a corresponding to the deviation between the speed command 1a and the speed signal 6a of the car 2 and outputs it to the current control amplifier 7. The speed signal 6 a of the car 2 is obtained by detecting the position signal 5 a of the motor shaft of the electric motor 4 that drives the car 2 with the position detector 5 and converting the position signal 5 a by the position / speed conversion 6.
The speed signal 6a obtained by the position / speed conversion 6 is compared with the speed command signal 1a from the speed command generator 1 and a current command 3a corresponding to the deviation is given to the current control amplifier 7.

The current control amplifier 7 calculates the deviation between this current command 3a and the current signal 8a from the current detector 8 which detects the current of the electric motor 4, and the deviation is supplied from the unbalanced torque command device 9. The current control signal 7a is added to the load signal 9a and output to the power converter 10. The power converter 10 controls the power supplied to the electric motor 4 based on the power control signal 7a, and controls the speed of the car 2.

In this case, the car 2 and the counterweight 1
A main rope 12 to which 1 is coupled is wound around a sheave 13, and the electric motor 4 rotates the sheave 13. A landing device 14 is attached to the car 2, and landing detection plates 15A, 1A provided on each floor of the elevator hoistway,
5B is detected and the landing signal 14a is sent to the speed command generator 1. The speed command generator 1 outputs a speed command signal 1a based on the landing signal 14a so that the car 2 can be smoothly stopped at the target position.

Furthermore, the car 2 has a load detector 16
Is provided, and the load detection signal 16a is given to the unbalanced torque command device 9. The unbalanced torque command device 9 is
A signal for correcting an unbalanced torque amount with the counterweight 11 is generated and given to the current control amplifier 7.

By the way, with the recent development of microcomputer technology, digital control by a microcomputer is being widely adopted also in the elevator control device 17. Even in the elevator control device 17 of FIG. 6, the functions of the elements surrounded by broken lines, namely, the speed command generator 1, the speed control amplifier 3, the position / speed converter 6, and the current control amplifier 7, The one realized by the microcomputer is being used.

In this case, the speed command generator 1 generates a speed reference as shown in FIG. 7 as the speed command 1a.
This speed reference includes a time base pattern area R1 (time t1 to t6) calculated based on time, and a distance base pattern area R2 (time t6 to t7) calculated in parallel based on the remaining distance to the destination floor. , A landing pattern region R3 for landing the car 2 (time t7 to t
8) and.

Among these, in the time base pattern region R1, the car 2 is called a mode 1 called an acceleration start jerk mode in which the change in acceleration is constant, a mode 2 in a constant acceleration region, and an acceleration end jerk mode. The vehicle is operated in mode 3, mode 4 which is a constant traveling mode region, and mode 5 called deceleration start jerk mode.

In the distance-based pattern region R2, the car 2 is operated in the constant deceleration mode 6, and in the landing pattern region R3, the car 2 receives the landing signal 14a.
In response to this, the vehicle is driven in the deceleration mode 7 in which the change in acceleration is constant, that is, the jerk is constant, so that the user can land smoothly and accurately.

As described above, in the conventional elevator control device, the elevator car 2 is controlled by the landing pattern in the deceleration mode 7 in order to land the elevator car 2 smoothly and accurately. The landing pattern in the deceleration mode 7 is created by the speed command generator 1 based on the landing signal 14a. Landing signal 1 to create a landing pattern for deceleration mode 7
4a is detected by the landing device 14 provided with the car 2 and the landing detection plates 15A and 15B provided on each floor of the hoistway.

[0011]

However, providing the landing detection plate 15 on each floor and installing the landing device 14 on the car 2 complicates the structure of the elevator system and reduces the cost. Is also expensive.

Therefore, it is proposed to remove the landing detecting plate 15 and the landing device 14 as described above. This is because the landing switch detects that the elevator car 2 has entered the landing zone, and when the landing switch operates, the landing is performed based on the difference between the current position of the motor shaft and the target stop shaft position. It creates a speed pattern.

However, in this case, since the elevator car 2 is caused to do so based on the difference between the current position of the motor shaft and the target stop shaft position, it is confirmed that the car 2 has entered the landing zone. If the main rope 12 expands or contracts after the detection, a deviation occurs from the actual traveling distance of the car 2. In other words, an error will occur in the landing accuracy of stopping at the target stop floor. This is more likely to occur as the building becomes taller and the main ropes 12 used for the elevator become longer.

An object of the present invention is to provide an elevator control device capable of accurately stopping the elevator within the landing level of the target stop floor even if the main ropes expand or contract after entering the landing zone. That is.

[0015]

According to a first aspect of the present invention, there is provided a first landing switch for detecting that a car has entered the landing zone, and a destination floor after the car has entered the landing zone. When the first landing switch and the second landing switch that detects that the car has entered the predetermined position, the car position landing pattern that is proportional to the difference between the car position and the target position is calculated. A car shaft landing pattern calculation means and a motor shaft position landing pattern for calculating a motor shaft position landing pattern proportional to the difference between the current position of the motor shaft and the target position when the second landing switch is operated. Computing means and speed pattern switching computing means for selecting a car position landing pattern when the first landing switch operates and a motor shaft position landing pattern when the second landing switch operates.
A speed control calculation means for controlling the speed of the car based on the landing pattern selected by the speed pattern switching calculation means.

The invention of claim 2 is proportional to the landing switch for detecting that the car has entered the landing zone, and is proportional to the difference between the position of the car and its target position when the landing switch operates. The car position landing pattern calculation means for calculating the car position landing pattern, and the motor shaft position landing proportional to the difference between the current position of the motor shaft and the target position when a predetermined time has elapsed since the landing switch was operated Motor shaft position landing pattern calculation means for calculating the floor pattern, and the car position when the landing switch is operated.The car landing pattern is selected, and when the predetermined time has elapsed after the landing switch was operated, the motor shaft position It is provided with speed pattern switching calculation means for selecting a floor pattern and speed control calculation means for controlling the speed of the car based on the landing pattern selected by the speed pattern switching calculation means.

According to a third aspect of the present invention, in the second aspect of the present invention, the electric motor shaft position landing pattern calculation means is arranged so that the electric motor shaft position is set when the car is below a predetermined speed after the landing switch is operated. The floor pattern is calculated, and the speed pattern switching calculation means selects the motor shaft position landing pattern when the car becomes a predetermined speed or less after the landing switch is operated.

The invention of claim 4 is the first to third aspects of the invention.
In the invention described above, the distance is calculated based on the traveling distance of the car from the time the car enters the landing zone until the car switches to the motor shaft position landing pattern and the motor shaft position detected by the motor shaft position detection means. When the difference from the traveling distance is within a predetermined distance range, the speed pattern switching calculation means does not switch from the car position landing pattern to the motor shaft position landing pattern.

The invention of claim 5 is the invention of claims 2 to 4.
In the invention described above, the predetermined time, the predetermined speed, or the predetermined distance when the car position landing pattern is switched to the electric motor shaft position landing pattern can be set separately for the ascending driving direction and the descending driving direction of the car. It is what

[0020]

According to the invention of claim 1, the speed pattern switching calculating means operates the car position landing pattern calculating means when the first landing switch for detecting that the car has entered the landing zone is operated. When the second landing switch that detects that the car has entered the predetermined position on the floor after entering the landing zone after selecting the car position landing pattern calculated in The motor shaft position landing pattern calculated by the landing pattern calculation means is selected. Then, the speed control calculating means speed controls the speed of the car based on the landing pattern selected by the pattern switching calculating means.

In the second aspect of the present invention, the speed pattern switching calculation means selects the car position landing pattern when the landing switch for detecting that the car has entered the landing zone is operated, and the landing pattern is selected. When a predetermined time has passed since the switch was operated, the motor shaft position landing pattern is selected. The speed control calculation means controls the speed of the car based on the landing pattern selected by the switching calculation means.

According to a third aspect of the present invention, in the second aspect of the present invention, the speed pattern switching calculation means is arranged such that when the car has a predetermined speed or less after the landing switch is operated, the motor shaft position is landed on the floor. The motor shaft position landing pattern calculated by the pattern calculation means is selected.

According to a fourth aspect of the present invention, in the first to third aspects of the present invention, the traveling distance of the car from the time the car enters the landing zone until the car is switched to the motor shaft position landing pattern, When the difference with the traveling distance calculated based on the electric motor shaft position detected by the electric motor shaft position detecting means is within a predetermined distance range, the speed pattern switching calculating means,
The car position landing pattern is not switched to the motor shaft position landing pattern.

According to the invention of claim 5, in the invention of claims 2 to 4, a predetermined time, a predetermined speed, or a predetermined distance when the car position landing pattern is switched to the motor shaft position landing pattern. Are set separately for the ascending driving direction and the descending driving direction of the car.

[0025]

Embodiments of the present invention will be described below. Figure 1
It is a block block diagram of the elevator control apparatus 17 of this invention, and FIG. 2 is a whole block diagram which applied the elevator control apparatus 17 of this invention to an elevator. As can be seen from FIG. 2, the elevator controller 17 of the present invention comprises a microcomputer.

In FIG. 2, the same elements as those of the conventional example shown in FIG. 6 are designated by the same reference numerals. The elevator control device 17 includes a CPU 18, a ROM 19 in which a program is stored, a RAM 20 for temporarily storing the contents of calculation results, an input interface 21 for reading an input signal, and an output signal for outputting. It is composed of an output interface 22 and a data bus line 23 connecting them.

In the hoistway of the elevator, a plurality of landing switches 24 for detecting the position of the car 2 are provided for each floor. The detection signal 24a is input to the elevator control device 17. Here, the landing switch 24 is not a complicated one like the conventional landing detection plate 15, but is a switch having a simple structure capable of outputting an on / off signal simply by passing the car 2. Is not likely to increase.

FIG. 1 shows an elevator control apparatus 1 according to the present invention.
7 is a functional block diagram of No. 7, showing details of functions particularly related to the present invention. Speed pattern calculation means 25
Is a normal speed pattern 2 as a speed command for the car 2
5a, and its speed pattern 25a
Is input to the speed pattern switching calculation means 26.

The operation signal 24a of the landing switch 24 is input to the landing zone calculation means 27, and the car 2 has entered the landing zone and after the car 2 has entered the landing zone, Detecting that a predetermined position has been entered. That is, when the landing zone calculation means 27 detects that the car 2 has entered the landing zone, it outputs the first landing switching signal 27a, and the car 2 enters the landing zone. When it detects that you have entered the predetermined position on the destination floor,
The second landing switching signal 27b is output. The second landing switching signal 27b is a signal output closer to the target stop position than the first landing switching signal 27a. For example, the landing switching signal 27a is the target stop position ± 200 mm, the second
The landing switching signal 27b is a signal that turns on at the target stop position ± 10 mm.

When the first landing switching signal 27a is input, the car position / landing pattern calculation means 28 receives the position data 29 of the car 2 calculated by the car position calculation means 29.
A car position landing pattern 28a is calculated based on a.
On the other hand, the motor shaft position landing pattern calculation means 30 is
When the landing switching signal 27b is input, the shaft position data 31a of the electric motor 4 calculated by the electric motor shaft position calculation means 31.
Based on the above, the motor shaft position landing pattern 30a is calculated. Here, the motor shaft position calculation means 31 calculates the shaft position data 31a of the motor 4 based on the position signal 5a of the motor shaft from the position detector 5.

The car position landing pattern calculation means 28 calculates the car position landing pattern 28a and the motor shaft position landing pattern calculation means 30 calculates the motor shaft position landing pattern 30a. 32 is input. The landing pattern switching calculation unit 32 speeds up the car position landing pattern 28a calculated by the car position landing pattern calculation unit 28 until the second landing switching signal 27b from the landing zone calculation unit 27 is received. When the second landing switching signal 27b is input to the pattern switching calculation means 26, the motor shaft position landing pattern 30a calculated by the motor shaft position landing pattern calculation means 30 is converted into the speed pattern switching calculation means 26. Output to.

Therefore, when the car 2 enters the landing zone, first, the car position landing pattern 28a is output to the speed pattern switching calculation means 26, and the purpose after the car 2 enters the landing zone. When the vehicle enters a predetermined position on the floor, the motor shaft position landing pattern 30a is output to the speed pattern switching calculation means 26.

The speed pattern switching calculation means 26 includes a speed pattern 25a from the speed pattern calculation means 25 and a car position landing pattern 2 from the landing pattern switching calculation section 32.
8a or the motor shaft position landing pattern 30a is input, and the first landing switching signal 2 from the landing zone calculation means 27 is input.
Until 7a, the speed pattern 25a is output from the speed pattern calculating means 25. Then, when the first landing switching signal 27a is input from the landing zone calculation means 27, the car position landing pattern 28a or the electric motor shaft position landing pattern 30a is output from the landing pattern switching calculation means 32. .

Therefore, until the car 2 enters the landing zone, the speed pattern 25a is output from the speed pattern calculating means 25, and when the car 2 enters the landing zone,
The car position landing pattern 28a or the motor shaft position landing pattern 30a is output from the landing pattern switching calculation means 32.

The output signal of the speed pattern switching calculation means 26 is compared with the speed signal 33a of the car 2 from the speed conversion calculation means 33 by the addition means 34, and the deviation thereof is input to the speed control calculation means 35. The speed control calculation means 35 controls the speed of the car 2 based on the deviation. Here, the speed conversion calculation unit 33 converts the signal 5a from the position detector 5 into a speed.

As described above, in the elevator control device 17 of the present invention, the car 2 is landed by using the speed pattern 25a from the speed pattern calculation means 25 as a speed command until the car 2 enters the landing zone. Once in the floor zone,
When the car position landing pattern 28a is used as a speed command and the car 2 enters a predetermined position on the destination floor after entering the landing zone, the motor shaft position landing pattern 30
a will be used as the speed command.

FIG. 3 is a flow chart showing the operation according to the first embodiment of the present invention. Elevator car 2
Whether or not the vehicle has decelerated and entered the landing zone is checked by the first landing switching signal 27a (S1). If the vehicle is not in the landing zone, the landing pattern calculation process is ended without doing anything. When entering the landing zone, the second landing switching signal 27 is used to determine whether or not the next-stage landing switch 24 is turned on.
b) (S2), the second landing switching signal 27
When b is not established, the car position landing pattern is determined by the remaining distance from the landing zone position (the position of the landing switch 24 that turns on the first landing switching signal 27a) to the target stop position and the car position. 28a is calculated (S3), and the calculated car position landing pattern 28a is output to control the car position landing pattern.

On the other hand, if the second landing switching signal 27b is established in the determination in step S2, the distance from the position of the landing switch 24 that turns on the second landing switching signal 27b to the target stop position is calculated ( S4). Then, the rotation angle of the motor shaft corresponding to the distance is calculated (S5), and the motor shaft position landing pattern 30a is calculated from the rotation angle (S5).
6) Output the calculated electric motor shaft position landing pattern 30a to control the electric motor shaft position landing pattern.

Next, FIG. 4 is a flow chart showing the operation of the second embodiment of the present invention. This second embodiment is
For a predetermined time after the car 2 enters the landing zone, the car is landed on the car position landing pattern 28a, and after the predetermined time has elapsed, the car shaft position landing pattern 30a is switched to. That is, in the first embodiment of FIG. 3, switching from the car position landing pattern 28a to the electric motor shaft position landing pattern 30a is performed by the second landing switching signal 27b from the landing switch 24. However, in the second embodiment, it is assumed that a predetermined time has elapsed after the car 2 entered the landing zone.

In FIG. 4, it is determined whether the elevator car 2 has decelerated to enter the landing zone or not.
Check with 7a (S1). If the vehicle is not in the landing zone, the landing pattern calculation process is ended without doing anything. When entering the landing zone, it is checked whether or not a predetermined time has passed since entering the landing zone (S2). If the predetermined time has not elapsed, the landing zone position (the landing switching signal 27a The car position landing pattern 28a is calculated according to the remaining distance from the position of the landing switch 24 to be turned on) to the target stop position and the car position (S3), and the calculated car position landing pattern 28a is output to arrive at the car position. Control the floor pattern.

On the other hand, if it is determined in step S2 that a predetermined time has elapsed, the distance from the position of the car 2 at that time to the target stop position is calculated (S4). Then, the rotation angle of the motor shaft corresponding to the distance is calculated (S5), the motor shaft position landing pattern 30a is calculated from the rotation angle (S6), and the calculated motor shaft position landing pattern 30a is calculated.
Is output to control the motor shaft position landing pattern.

FIG. 5 is a flow chart showing the operation of the third embodiment of the present invention. In the third embodiment, when the speed of the car 2 exceeds a predetermined speed after the car 2 enters the landing zone,
The car is landed on the car position landing pattern 28a, and when the speed of the car 2 becomes equal to or lower than a predetermined speed, the car shaft position landing pattern 30a is switched to. That is, in the first embodiment of FIG. 3, switching from the car position landing pattern 28a to the motor shaft position landing pattern 30a is performed by the second landing switching signal 27b from the landing switch 24. However, in the third embodiment, it is performed when the speed of the car 2 becomes lower than a predetermined speed after entering the landing zone. As a result, when the car 2 is in the state of exceeding the predetermined speed after entering the landing zone,
The car is landed according to the car position landing pattern, and when the speed becomes lower than a predetermined speed, the electric shaft position landing pattern is switched to.

In FIG. 5, it is determined whether the elevator car 2 has decelerated and entered the landing zone.
Check with 7a (S1). If the vehicle is not in the landing zone, the landing pattern calculation process is ended without doing anything. When entering the landing zone, it is checked whether or not the speed of the car 2 is below a predetermined speed after entering the landing zone (S2). If the speed of the car 2 is not below the predetermined speed, Landing zone position (landing switching signal 2
Based on the remaining distance from the position of the landing switch 24 that turns on 7a) to the target stop position and the car position, the car position landing pattern 28a is calculated (S3), and the calculated car position landing pattern 28a is output. Controls the position landing pattern.

On the other hand, if it is determined in step S2 that the speed is less than the predetermined speed, the distance from the position of the car 2 at that time to the target stop position is calculated (S4). Then, the rotation angle of the motor shaft corresponding to the distance is calculated (S5), the motor shaft position landing pattern 30a is calculated from the rotation angle (S6), and the calculated motor shaft position landing pattern 30a is calculated.
Is output to control the motor shaft position landing pattern.

In the above description, the car position landing pattern 2
Switching from 8a to the motor shaft position landing pattern 30a,
Although it is always performed, if it can be determined that the main rope 12 is not stretched or contracted, the landing pattern may not be switched. That is, the travel distance value of the car 2 from when it detects that the car 2 has entered the landing zone to when the landing pattern is switched, and the travel distance conversion calculated by detecting the position of the motor shaft during that time. If the deviation from the value is within a predetermined distance, the landing pattern is not switched. This is a state in which there is no deviation between the actual traveling distance of the car 2 and the traveling distance conversion value calculated by detecting the position of the electric motor shaft as long as the deviation is within a predetermined distance range, This is because it can be determined that the main rope 12 does not extend or contract.

Further, in the case where the landing stop level varies in the ascending operation direction and the descending operation direction of the elevator,
It is also possible to separately set a predetermined time, a predetermined speed and a predetermined distance for rising and lowering.

[0047]

As described above, according to the present invention, when the elevator car slows down and enters the landing zone, the car position and landing pattern are selected to control the car. When the car approaches the target stop position, the car shaft control is performed by selecting the motor shaft position landing pattern, so even if the main rope extends or contracts, the car landing accuracy becomes unstable. Therefore, the car can be smoothly stopped at the target stop position.

Therefore, it is not necessary to provide a costly landing detection plate or a landing device, and it is possible to realize landing control with low cost and high landing accuracy.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an overall configuration diagram in which an elevator control device of the present invention is applied to an elevator.

FIG. 3 is a flowchart showing the operation of the first exemplary embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the second exemplary embodiment of the present invention.

FIG. 5 is a flowchart showing the operation of the third exemplary embodiment of the present invention.

FIG. 6 is an overall configuration diagram in which a conventional elevator control device is applied to an elevator.

FIG. 7 is an explanatory diagram of a speed reference of an elevator car.

[Explanation of symbols]

 1 speed command generator 2 car 3 speed control amplifier 4 motor 5 position detector 6 position / speed detector 7 current control amplifier 8 current detector 9 unbalanced torque command device 10 power converter 11 counterweight 12 main rope 13 rope Vehicle 14 Landing device 15 Landing detection plate 16 Load detector 17 Elevator control device 18 CPU 19 ROM 20 RAM 21 Input interface 22 Output interface 23 Data bus line 24 Landing switch 25 Speed pattern calculation means 26 Speed pattern switching means 27 Landing zone calculation means 28 Car position landing pattern calculation means 29 Car position calculation means 30 Electric motor shaft position Landing pattern calculation means 31 Electric motor shaft position calculation means 32 Landing pattern switching calculation means 33 Speed conversion calculation means 34 Addition means 35 Speed Control calculation means

Claims (5)

[Claims] 1. An electric motor shaft position detecting means for detecting an axial position of an electric motor for driving a car of an elevator; and an electric motor shaft position detecting means for detecting the electric car shaft position when the car enters a landing zone of each floor. In an elevator control device having speed control calculation means for controlling the speed of the car based on a landing pattern proportional to the difference between the current position of the electric motor shaft and the target position, the car has a landing zone. A first landing switch for detecting that the car has entered, a second landing switch for detecting that the car has entered a predetermined position on the destination floor after entering the landing zone, and When the landing switch No. 1 operates, a car position landing pattern calculation means for calculating a car position landing pattern proportional to the difference between the position of the car and the target position thereof;
When the landing switch is operated, the motor shaft position landing pattern calculation means for calculating a motor shaft position landing pattern proportional to the difference between the current position of the motor shaft and the target position, and the first landing switch Is operated, the car position landing pattern is selected, and when the second landing switch is operated, the motor shaft position landing pattern is selected. An elevator control apparatus comprising: speed control calculation means for controlling the speed of the car based on the selected landing pattern. 2. An electric motor shaft position detecting means for detecting an axial position of an electric motor for driving a car of an elevator, and the electric motor shaft position detecting means when the car enters a landing zone of each floor. In an elevator control device having speed control calculation means for controlling the speed of the car based on a landing pattern proportional to the difference between the current position of the electric motor shaft and the target position, the car has a landing zone. A landing switch that detects entry and a car position landing pattern calculation that is proportional to the difference between the position of the car and its target position when the landing switch operates And a motor for calculating a motor shaft position landing pattern proportional to a difference between the current position of the motor shaft and a target position when a predetermined time has passed since the landing switch was operated. Axis position landing pattern calculation means,
Speed pattern switching calculation means for selecting the car position landing pattern when the landing switch operates, and selecting the motor shaft position landing pattern for a predetermined time after the landing switch operates; And a speed control calculation means for controlling the speed of the car based on the landing pattern selected by the speed pattern switching calculation means. 3. The motor shaft position landing pattern calculation means,
When the car becomes a predetermined speed or less after the landing switch is operated, the electric motor shaft position landing pattern is calculated, and the speed pattern switching calculation means is set after the landing switch is operated. 3. The elevator control device according to claim 2, wherein the motor shaft position landing pattern is selected when the speed of the car is below a predetermined speed. 4. The traveling distance of the car from the time the car enters the landing zone until it switches to the motor shaft position landing pattern, and the motor shaft position detected by the motor shaft position detecting means. When the difference from the travel distance calculated based on the above is within a predetermined distance range, the speed pattern switching calculation means does not switch from the car position landing pattern to the electric motor shaft position landing pattern. The elevator control device according to any one of claims 1 to 3, characterized in that. 5. The predetermined time, the predetermined speed, or the predetermined distance when switching from the car position landing pattern to the electric motor shaft position landing pattern is the ascending operation direction and the descending operation of the car. The elevator control device according to any one of claims 2 to 4, wherein the setting can be made separately for the direction and the direction.