JP2004010335A - Control device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a control device of an elevator capable of increasing operation efficiency without impairing comfortableness in the elevator car. <P>SOLUTION: The control device of the elevator which drives the car and controls the speed according to a speed command value, is equipped with an in-car load detection means 21 to detect the in-car load, an increased acceleration change recognition means 23 to recognize the increased acceleration change based on an output from the in-car load detection means, and a speed command generation means 24 to output by changing an increased acceleration setting value of the speed command value in accordance with the output of the increased change recognition means. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an elevator control device, and more particularly to an elevator control device that improves operation efficiency.
[0002]
[Prior art]
FIG. 5 is a configuration diagram showing a conventional elevator control device. In the figure, reference numeral 1 denotes a car, 2 denotes a counterweight, and 3 denotes a main rope wound around a hoisting machine 4. The car 1 is connected to one end and the counterweight 2 is connected to the other end. 4 is a hoisting machine, 6 is a motor for driving the drive sheave 4 via a hoisting machine 5, and 7 is a pulse that is coupled to the motor 6 and generates a pulse proportional to the travel distance of the car 1 from the rotation of the motor 6. Generator.
[0003]
8 is a counting circuit that counts pulses from the pulse generator 7 and outputs a pulse count value 8a, 9 is a car internal load detector that is provided in the car 1 and detects a car internal load and issues a car internal load signal 9a. Reference numeral 10 denotes a microcomputer (hereinafter referred to as a microcomputer) which receives a pulse count value 8a and a car load signal 9a and outputs a speed command value 10a, and 11 denotes a power converter which is connected to a three-phase AC power supply 12 and supplies power to the electric motor 6. Device.
[0004]
The conventional elevator control device is configured as described above, and the microcomputer 10 performs a speed command remaining distance calculation to the scheduled stop floor based on the pulse count value 8a and sends the speed command value 10a to the power conversion device 11. I do. The power conversion device 11 controls the torque and the rotation speed of the electric motor 6 according to the speed command value 10a. The rotation of the electric motor 6 is transmitted to the hoist 5, and the speed of the car 1 is controlled.
[0005]
FIG. 6 shows a waveform of the speed command value 10a and an acceleration command value obtained by differentiating the speed command. The elevator speed command has jerk portions called rounding before and after constant elevator acceleration (t2 region) and constant deceleration (t6 region) so as not to impair ride comfort of passengers in the car. In other words, there are four places: starting (t1 area), ending acceleration (t3 area), starting deceleration (t5 area), and stopping (t7 area). The acceleration is gradually changed to obtain a smooth ride. ing. The longer the rounding time, the less the passenger in the car can feel the change in acceleration, and the better the riding comfort.
[0006]
[Problems to be solved by the invention]
In the conventional elevator control device as described above, from the viewpoint of ride comfort, the speed command always has a rounding time, but this requires a longer time to reach the destination floor and sacrifices the operating efficiency of the elevator. Problem.
[0007]
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an elevator control device capable of increasing the operation efficiency without impairing the riding comfort of a car.
[0008]
[Means for Solving the Problems]
An elevator control device according to the present invention is an elevator control device that drives a car and controls the speed according to a speed command value. In the elevator control device, a car load detection unit that detects a load in the car, and the car load detection unit. Jerk changeover judging means for judging the jerk switching based on the output from the motor, and speed command generating means for changing and outputting the jerk set value of the speed command value according to the output of the jerk change judging means It is characterized by having the following.
[0009]
A congestion degree detecting means for detecting a congestion degree of the elevator; a jerk switching judgment means for judging a jerk switching based on an output of the congestion degree detecting means; Speed command generating means for changing and outputting the jerk set value of the speed command value.
[0010]
Further, an in-car load detecting means for detecting a load in the car, a congestion degree detecting means for detecting a congestion degree of the elevator, and a jerk of the jerk based on outputs of the in-car load detecting means and the congestion degree detecting means. A jerk switching determining means for determining switching; and a speed command generating means for changing and outputting a jerk set value of the speed command value in accordance with an output of the jerk switching determining means. Things.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
1 and 2 illustrate an elevator control apparatus according to Embodiment 1 of the present invention. FIG. 1 is a configuration diagram of a microcomputer, and FIG. 2 is a speed command value curve diagram. In the present invention, the overall configuration of the elevator control device is the same as that of the conventional example shown in FIG. 5, but the functional configuration in a microcomputer 10 is different.
[0012]
As shown in FIG. 1, the elevator control apparatus according to the first embodiment receives a car internal load signal 9 a from a car internal load detector 9 as a microcomputer 10 and loads the car 1 with no load. The in-car load detecting means 21 for detecting the percentage of the load (the maximum load that can be loaded when actually used) and the absence of the car based on the output from the in-car load detecting means 21 A jerk changeover judging means 23 for judging whether or not a load (no passengers) exists, thereby judging whether to change the jerk set value, and changing the jerk according to a signal state of the jerk change judging means 23 It has a function with the speed command generating means 24 that outputs the speed command value 10a, which is either one of the case not changed and the case changed, to the power converter 11.
[0013]
When there is no load in the car, no passengers are in the car, and it is not necessary to consider the riding comfort as the operation of the elevator. Therefore, when there is no load in the car, the rounding time is minimized or eliminated to minimize the time to reach the destination floor.
[0014]
FIG. 2 shows a case where the jerk time is abolished as an example. When the signal of the jerk switching determination means 23 is off, a normal speed command value Vp is generated. When the signal is on (no load), the jerk time is abolished at the start, end of acceleration, and start of deceleration. A speed command value V'p is generated. The jerk time of the stop is not abolished if this is abolished, because the landing accuracy is deteriorated. However, the jerk is made larger than usual. An acceleration command value obtained by differentiating the speed command at this time is also shown (αp, αp ′). By eliminating or increasing the jerk time, the travel time to the destination floor can be shortened, and the operating efficiency of the elevator can be increased.
[0015]
Therefore, according to the first embodiment, the rounding time, that is, the jerk is changed in accordance with the presence or absence of a passenger in the car. Therefore, the jerk of the speed command value is changed in accordance with the load in the car. The driving efficiency can be increased without impairing the riding comfort.
[0016]
Embodiment 2 FIG.
In the first embodiment, the jerk set value is switched according to the load in the car. However, when the elevator is congested, the discomfort of the passenger waiting at the landing is prioritized over the ride comfort of the passenger in the car, It is conceivable to reduce the jerk.
[0017]
FIG. 3 shows a configuration diagram of the microcomputer in this case. 22 is a means for detecting the degree of elevator congestion. In the case of a single car in which only one elevator is installed, the number of registered elevators and cars, or the time of rush hours such as commuting or lunch, is used. This is a means for determining that it has become. When a plurality of elevators are installed, the signal on the left is directly output from a group management device (not shown). 23 is a jerk switching determining means for determining whether or not the elevator is congested, thereby determining whether or not to change the jerk set value. 24 is a jerk switching determining means based on the signal state of the jerk switching determining means 23. Is a speed command generating means for generating one of the speed command values 10a when the speed is not changed and when the speed is changed.
[0018]
In the first embodiment, the jerk is changed according to the passengers in the car. However, when the elevator is crowded, the ride comfort is slightly sacrificed, and the jerk (rounding time) is slightly reduced in order to increase the operation efficiency. (shorten. In addition, from the viewpoint of bodily sensation, it is less uncomfortable in terms of riding comfort when the rounding time at the time of startup or the end of acceleration is shorter than the rounding time at the start and stop of deceleration.
[0019]
Therefore, according to the second embodiment, the rounding time, that is, the jerk is changed according to the congestion degree of the elevator. Therefore, the jerk of the speed command value is changed according to the congestion degree of the elevator. The driving efficiency can be increased without impairing the riding comfort.
[0020]
Embodiment 3 FIG.
As a third embodiment, a combination of the first and second embodiments can be considered. FIG. 4 shows a configuration diagram of the microcomputer at this time. As shown in FIG. 4, the microcomputer 10 has functions of an in-car load detecting unit 21, an elevator congestion degree detecting unit 22, a jerk switching determining unit 23, and a speed command generating unit 24.
[0021]
In addition, since each of the above embodiments is constituted by a microcomputer, no mechanical element is required, and the embodiment can be realized at low cost.
[0022]
Therefore, according to the third embodiment, the rounding time, that is, the jerk is changed according to the load in the car and the degree of congestion. Therefore, the jerk of the speed command value is changed according to the load in the car and the degree of congestion. Can be changed, and the driving efficiency can be increased without impairing the riding comfort.
[0023]
【The invention's effect】
As described above, according to the present invention, since the jerk of the speed command value is changed in accordance with the load in the car, the operation efficiency can be improved without impairing the riding comfort.
[0024]
In addition, since the jerk of the speed command value is changed according to the congestion degree of the elevator, the speed command value that emphasizes the riding comfort when the traffic is not crowded and the acceleration is slightly A speed command value that increases (shortens the rounding time) is generated, thereby increasing operating efficiency.
[0025]
Further, the jerk of the speed command value is changed according to the load in the car and the congestion degree of the elevator, so that the operation efficiency can be optimized.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a microcomputer of an elevator control device according to Embodiment 1 of the present invention.
FIG. 2 is a speed command value curve diagram for explaining the elevator control device according to the first embodiment of the present invention.
FIG. 3 is a configuration diagram of a microcomputer of an elevator control device according to Embodiment 2 of the present invention.
FIG. 4 is a configuration diagram of a microcomputer of an elevator control device according to Embodiment 3 of the present invention.
FIG. 5 is a diagram showing an overall configuration of an elevator control device according to the present invention and a conventional example.
FIG. 6 is a speed command value curve diagram for explaining an elevator control device according to a conventional example.
[Explanation of symbols]
10 microcomputer, 21 car load detecting means, 22 elevator congestion degree detecting means, 23 jerk switching determining means, 24 speed command generating means.

Claims (3)

In an elevator control device that drives a car and controls the speed according to a speed command value,
An in-car load detecting means for detecting a load in the car;
Jerk switching determining means for determining switching of jerk based on the output from the in-car load detecting means,
An elevator control device, comprising: speed command generating means for changing and outputting a jerk set value of the speed command value in accordance with an output of the jerk switching determination means. In an elevator control device that drives a car and controls the speed according to a speed command value,
Congestion degree detecting means for detecting the congestion degree of the elevator,
Jerk switching determining means for determining switching of jerk based on the output of the congestion degree detecting means,
An elevator control device, comprising: speed command generating means for changing and outputting a jerk set value of the speed command value in accordance with an output of the jerk switching determination means. In an elevator control device that drives a car and controls the speed according to a speed command value,
An in-car load detecting means for detecting a load in the car;
Congestion degree detecting means for detecting the congestion degree of the elevator,
Jerk switching determining means for determining switching of jerk based on the outputs of the in-car load detecting means and the congestion degree detecting means,
An elevator control device, comprising: speed command generating means for changing and outputting a jerk set value of the speed command value in accordance with an output of the jerk switching determination means.

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