JP2561715Y2 - Structural vibration control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a vibration control device for a structure.

(Prior Art) In recent years, various types of vibration damping (vibration isolation) devices have been actively developed in order to reduce vibration of a structure when an earthquake or the like occurs.

As one of the measures, a mass having a predetermined weight is attached to a structure (building) so as to be relatively displaceable, and the mass is driven by an actuator in a direction to absorb the vibration of the structure, thereby achieving a large control. There are devices that exert vibration effects.

In this device, while detecting the actual vibration of the structure, the mass is moved synchronously with the vibration in the direction to cancel it, and the controller controls the actuator necessary to absorb the detected vibration. In order to perform the calculation, an arithmetic expression and an arithmetic constant are stored.

(Problems to be Solved by the Invention) However, accurate values for the operation constants and the like for performing such control can be calculated only after the actual structure is completed. The operation constants and the like predicted in advance in the design stage do not greatly differ from the actual values, but from the viewpoint of increasing the control accuracy, it is desirable to correct the constants correctly in accordance with the structure.

However, the conventional controller had a structure in which previously set operation constants and the like could not be changed later.In order to insert a new numerical value, a part of the memory storing the operation constants and the like had to be completely replaced. I had to.

The present invention solves such a problem, and an object of the present invention is to provide an apparatus that can easily change an arithmetic constant or the like later.

(Means for Solving the Problems) The present invention provides a mass having a predetermined weight that is displaced relative to a structure, an actuator attached to the structure that drives the mass, and a unit that detects vibration of the structure. A controller for operating an actuator to absorb the vibration of the structure via the mass, a structure vibration control device comprising: a means for detecting vibration of the structure; and a means for detecting displacement of the mass. A circuit for calculating a control amount of an actuator for displacing a mass so as to absorb the vibration of a structure, a writable storage means for storing the calculation constants and the like, and a storage means for storing the calculation constant and the like by an external input. Rewriting means for rewriting arithmetic constants and the like, and the rewriting means is provided separately from the controller.

(Operation) Therefore, even after the equipment is installed on the structure, the operation constants and the like necessary for control corresponding to the actual structure can be rewritten to accurate values by external input. It is possible to realize more accurate vibration suppression control.

(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to FIG.

In the figure, reference numeral 1 denotes a structure, on the upper surface of which is a mass 2 of a predetermined weight.
Are mounted on the structure 1 so as to be relatively displaceable in a horizontal plane.

A hydraulic cylinder 3 as an actuator is connected to the mass 2, and a base end of the hydraulic cylinder 3 is attached to the structure 1.

The hydraulic pressure supplied to the hydraulic cylinder 3 is controlled by the controller 5, and when the earthquake occurs, the hydraulic cylinder 3 is expanded and contracted so as to absorb the vibration of the structure 1 via the mass 2. In other words, by driving the mass 2 in the opposite direction while synchronizing with the shaking of the structure 1, the driving reaction force is exerted on the structure 1, and the shaking caused by the earthquake is absorbed.

A sensor 7 for detecting the actual vibration of the structure 1,
A sensor 8 for detecting the actual displacement of the mass 2 is provided, and these detection signals are input to the controller 5.

The controller 5 calculates a control signal of the hydraulic cylinder 3 for absorbing the vibration of the structure 1 based on these input signals according to a preset calculation formula.
For this purpose, a memory 5a as writable storage means for storing arithmetic constants, arithmetic expressions, and the like set according to the structure 1, and the above-described input based on the arithmetic expressions and arithmetic constants read from the memory 5a. Hydraulic cylinder 3 while receiving signals
And an arithmetic circuit 5b for calculating the control signal.

Further, there is provided means 5c for rewriting the storage contents of the memory 5a by an external input operation.The rewriting means 5c has a serial interface, such as a personal computer, and has an external operation via a bidirectional communication means. Rewrite part of memory 5a directly.

Thus, when an earthquake or the like occurs, the controller 5 sends a drive control signal for the hydraulic cylinder 3 while analyzing the actual vibration, and drives the mass 2 so as to absorb the vibration of the structure 1. I do. Due to this damping action, the vibration of the structure 1 is suppressed to a minimum, and the structure 1 is effectively protected from an earthquake or the like.

The arithmetic operation in the controller 5 is performed based on arithmetic expressions, arithmetic constants, and the like stored in the memory 5a. The arithmetic constants and the like are stored in the structure 1 on which the device is actually installed.
It is determined by the size, weight, structure, etc. of the structure 1, and an accurate result can be obtained only when the structure 1 is completed. Therefore, if the vibration damping device is manufactured before the structure 1 is completed in advance, the operation constants and the like are set based on the predicted values, and thus the values may not always be accurate. In this case, Memory 5a
It is necessary to change the stored contents of the 正 し い to the correct one.

However, in the present invention, in such a case, rewriting means
Since the stored contents of the memory 5a can be corrected by an external operation via the 5c, the value can be very easily changed to an appropriate value without replacing a part of the memory 5a as in the related art.

This correction can be used not only for the specification of the structure 1 but also for compensating for variations in the control response characteristics of the driving parts such as the hydraulic cylinder 3 and the like. is there.

(Effects of the Invention) As described above, according to the present invention, even after the equipment is installed on the structure, the operation constants and the like necessary for control corresponding to the actual structure can be input from the outside, An accurate value can be rewritten, and a response characteristic variation of the actuator can be compensated, so that the most effective vibration damping action can be exhibited in accordance with the actual product.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention. 1 ... structure, 2 ... mass, 3 ... hydraulic cylinder, 5 ...
… Controller, 5a …… Memory, 5b …… Operation circuit, 5c…
... Rewriting means, 7: Vibration detection sensor, 8: Displacement detection sensor.

Claims (1)

(57) [Scope of request for utility model registration] 1. A mass having a predetermined weight which is displaced relative to a structure, an actuator mounted on the structure for driving the mass, means for detecting vibration of the structure, and a mass of the structure via the mass. In a vibration damping control device for a structure, comprising a controller for operating an actuator to absorb vibration, a means for detecting vibration of the structure, a means for detecting displacement of a mass, and absorbing vibration of the structure Circuit for calculating the control amount of the actuator for displacing the mass, writable storage means for storing the operation constants, etc., and rewriting for rewriting the operation constants, etc. stored in this storage means by an external input Means for controlling vibration of the structure, wherein the rewriting means is provided separately from the controller.