JPS5819632Y2 - pneumatic calculator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pneumatic calculator that calculates a pneumatic pressure signal to generate a square root or square root output pressure.

The purpose of the present invention is to realize a pneumatic computing unit with a simple configuration.

FIG. 1 is a diagram showing the basic configuration of the present invention.

In FIG. 1, L is a movable ring S 1 t S 2 that rotates around a pivot point a, and springs that suspend the movable end of the movable ring from both sides.

These two springs have the same spring constant and are stretched to the same length.

One spring S1 is provided in the XX direction orthogonal to the YY direction in which the movable ring is arranged.

Further, the other spring S2 is arranged at an angle of θ with respect to XX.

b is the tension point of springs S1 and S2 on the movable ring, c and d are the tension points of spring S1. This is the fixed point of S2.

Here, when a force Fi is applied to a point on the movable ring and the extension force of the spring is Fs, the following equation holds between θ, Fi, and Fs.

Fi=Fs(1-CO3θ)(1) θ2 θ4 On the other hand, CO8θ=1−1+−.

The nozzle spacing of a normal 4-nozzle flapper mechanism is small and the part below θ is omitted, and equation (1) can be expressed as equation (2).

Fi = 1θ2 (2) Also, θ = k 2 A1 (3) 2 is a constant for kl+, that is, the present invention utilizes the principles of equations (2) and (3) above to calculate the square root or 2 This is to obtain the calculation output of the multiplication.

FIG. 2 is an explanatory diagram of the configuration of an embodiment of the present invention.

In Fig. 2, 1 is a first movable rod that rotates around a pivot point a, and 2 is arranged in a direction intersecting the movable ring, and is independently pivoted coaxially with the vicinity of b near its movable end. supported second
The movable rods 3 and 4 are the first movable rods that suspend the first movable rod 1 from both sides.
and the second spring.

The tension points of the two springs 3 and 4 are selected above the pivot point of the second movable rod, and in particular, the other end of the second spring 4 is selected at the fulcrum point of the second movable rod.
is fixed.

And these first and second movable rods 1 and 2 and the first and second
The springs 3 and 4 constitute the principle element shown in FIG. 1 described above.

5 is a first bellows, and 6 is a second bellows, each of which is connected to the first movable rod 1 and the second movable rod 2 at the movable end side.

51 and 61 are zero adjustment springs. 7 is a nozzle flapper mechanism consisting of a nozzle 71 and a flapper 72 formed by the first movable rod 1; 8 is a pneumatic amplifier that amplifies the back pressure of the nozzle 71; 9
is the aperture.

Pi is input pressure, Po is output pressure, and Ps is supply air pressure.

In the device configured as described above, it is assumed that a constant input pressure is supplied to the first bellows 5 and the first movable rod 1 button and the second movable rod 2 are balanced in the illustrated state.

Here, when the input pressure of the first bellows 5 increases, the first movable rod 1
rotates clockwise around the pivot point a, narrowing the gap between the nozzle 71 and the flapper 72.

When the nozzle gap narrows, the back pressure of the nozzle flapper mechanism 7 increases, and this pressure is amplified by the amplifier 8 and supplied to the second bellows 6.

The second bellows 6 receives the output pressure of the amplifier 8 and moves the second movable rod 2
is rotated counterclockwise to deviate by a small angle θ as shown by the dotted line.

Therefore, the horizontal component of the tensile force of the second spring 4 becomes smaller, and the first movable rod 1 is pushed back to the left.

The movable frame 1 then comes to rest in equilibrium at the new position.

Subsequently, when the input pressure Pi decreases, the first movable rod 1 tilts to the left to lower the nozzle back pressure.

At the same time, the pressure inside the second bellows 6 decreases and θ becomes smaller, pushing the first movable rod 1 to the right and reaching a new equilibrium point again.

In this case, the force generated by the input pressure Pi and the second bellows 6
The feedback force generated in the F
Corresponds to i and θ.

Therefore, the calculated output pressure PO corresponding to the square root value of the input pressure Pi can be extracted from the output terminal of the amplifier 8 in the above-mentioned balanced state.

Similarly, the nozzle flapper mechanism 7 for displacement detection is
If it is provided on the left side of the movable rod and the input pressure Pi is supplied to the second bellows 6, and the output of the amplifier 8 is fed back to the first bellows 5, the square calculation can be performed according to the principle of equation (3). (See Figure 3).

As explained above, the present invention utilizes the relative relationship between the displacement and inclination angle of two movable frames connected by tension springs and arranged in intersecting directions, so the principle is simple. It has good accuracy and almost no failures occur.

In addition, only two movable frames, a tension spring, a bellows deflection mechanism, a nozzle flapper mechanism, and a pneumatic amplifier are used as the constituent elements, making the configuration extremely simple.

Therefore, according to the present invention, it is possible to provide a pneumatic square root or square arithmetic unit with high accuracy and a simple structure.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the basic structure of the present invention, and FIGS. 2 and 3 are explanatory diagrams of embodiments of the present invention. 1.2... Movable frame, 3, 4... Tension spring, 5, 6...
... Bellows 7... Nozzle flapper mechanism, 8... Air pressure amplifier.

Claims (1)

[Scope of utility model registration request] A first movable rod that is rotationally deflected around a pivot point by a first bellow, first and second springs having the same characteristics that tension the movable end of the first movable rod from both sides, and a second bellow that a second movable rod that is rotationally deflected around a suspension point on the first movable rod and receives a force in the direction of the suspension point by the second spring; and a deflection of the first movable rod by the first or second bellows. a nozzle flapper mechanism that changes the nozzle back pressure in relation to the position of the nozzle, and a pneumatic amplifier that amplifies the back pressure of the nozzle flapper mechanism and returns it to the second or first bellows, from the output end of the pneumatic amplifier to the A pneumatic calculator configured to take out a calculation output pressure of the square root or square of the input pressure supplied to the first or second bellows.