JPH0553606A - Physical value fluctuation controller - Google Patents

Abstract

PURPOSE:To actuate an operating means like a motor, etc., so as to secure its operating power spectrum surely equal to 1/f fluctuation by correcting the fluctuation signal data in accordance with the characteristic of the operating means and operating this means based on the corrected data. CONSTITUTION:The detection time series signal data z(s) is corrected based on the fluctuation time series signal data (s) on the heart beat cycle, the natural wind, etc., so that the power spectrum of the data z(s) is equal to 1/f fluctuation. Thus the new detection time series signal data x(s) showing the 1/f fluctuation is obtained together with the corrected fluctuation time series signal data v(s). These signal data are written into a ROM 8. An inverter 3 performs the control based on the deta v (s) so that the power spectrum of the rotational frequency of a motor 5 of a pump 4 is equal to 1/f fluctuation, that is, the power spectrum of the rotational frequency of the pump 4 itself is equal to 1/f fluctuation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to physical quantity fluctuation control for controlling fluctuations (so-called 1 / f fluctuations) having a power spectrum such that physical quantities such as wind speed, temperature and pressure are proportional to the reciprocal of frequency f. It relates to the device.

[0002]

2. Description of the Related Art Since the rhythm of the body represented by the human heart rate, the alpha rhythm of brain waves, etc. has a so-called 1 / f fluctuation, a fluctuation stimulus having the same properties as this biological rhythm affects the human body. It is said to give pleasure. A 1 / f fluctuation control technique utilizing this property has been disclosed in Japanese Patent Publication No. Sho 62-22378. FIG. 6 is a configuration diagram of a circulation type bathtub using the 1 / f fluctuation control disclosed in Japanese Patent Publication No. 62-22378.

This circulating bath 100 is equipped with a heat exchanger 10.
1, a bath unit 104 including a pump 102 and a burner 103, and a bathtub 105 are provided.
4 and the bath 105 are connected by connecting pipes 106 and 107. Then, the pump control circuit 108
When the operation of the pump 102 is started, the power spectrum of the rotation speed of the pump is controlled to 1 / f fluctuation by the signal from the 1 / f fluctuation signal generator 109. In addition, 110 is a human body taking a bath.

[0004]

However, the 1 / f fluctuation control in this conventional circulating bath has the following problems. That is, the 1 / f fluctuation control in this circulating bath is based on the characteristics of the pump itself, such as the response of a so-called pump operation rise and fall, such as a sudden change in the rotation of the motor and the start of operation from a stopped state, and the pump and jet flow. Since the characteristics such as the pipe resistance between the discharge ports are not taken into consideration, the power spectrum of the rotational speed of the pump does not necessarily have 1 / f fluctuation, and the power spectrum of the jet itself does not also have 1 / f fluctuation.

The present invention has been made to solve such a problem, and its purpose is to ensure the operating power spectrum of operating means such as a pump, a fan motor or the like for generating a jet, or the physical quantity itself such as the pressure of a jet. To 1 / f
An object of the present invention is to provide a fluctuation control device for a physical quantity that can be controlled so that fluctuations occur.

[0006]

In order to solve the above problems, a physical quantity fluctuation control device according to a first aspect of the present invention comprises an operating means for manipulating physical quantities such as wind speed, temperature and pressure, and 1 / f fluctuation signal generating means. A control means for controlling a physical quantity operated by the operating means based on the fluctuation time series signal data from the 1 / f fluctuation signal generating means, and a time series which operates in conjunction with the operating means and indicates an operating state of the operating means. It is characterized by comprising a detecting means for detecting the signal data and a data correcting means for correcting the fluctuation time series signal data so that the time series signal data detected by the detecting means has a 1 / f fluctuation.

A physical quantity fluctuation control device according to a second aspect of the present invention comprises an operating means for manipulating physical quantities such as wind speed, temperature, pressure, etc., 1 / f fluctuation signal generating means, and fluctuations from the 1 / f fluctuation signal generating means. Control means for controlling a physical quantity operated by the operating means by time-series signal data; detection means for detecting time-series signal data indicating a physical quantity state such as wind speed, temperature, pressure, etc. operated by the operating means; The time series signal data detected by the detection means is 1 / f
And a data correction means for correcting the fluctuation time-series signal data so that the fluctuation occurs.

[0008]

In the fluctuation control device for physical quantity according to the first aspect, the fluctuation signal data is corrected by the data correction means in accordance with the characteristics of the operation means such as the motor, and the operation means is controlled based on the corrected fluctuation signal data. To do.

According to a second aspect of the present invention, there is provided a physical quantity fluctuation control device which detects an operation power spectrum of a physical quantity itself operated by an operating means, and uses data correction means so that the power spectrum becomes 1 / f fluctuation signal data. Is corrected, and the operating means is controlled based on the corrected fluctuation signal data.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a configuration diagram of a circulating bath using a physical quantity fluctuation control device according to a first embodiment of the present invention.

A physical quantity fluctuation control device 1 controls a 1 / f fluctuation signal generator 2, an inverter 3 as a control means, a rotation motor (M) 5 for a pump (P) 4 as an operation means, and a rotation speed of the motor 5. A motor rotation speed detector (TG) 6, which is detection means for detecting, a data correction means 7, a read-only memory (ROM) 8, and a ROM writing device 9 are provided. In addition, 10 is an air intake part, 11 is a jet nozzle of a jet flow, 12
Is its drive motor (M1), 13 and 14 are baths 15
A jet port and an intake port leading to the inner wall of the human body 16 are a human body taking a bath.

When the pump 4 is driven, the 1 / f fluctuation signal generator 2 generates a fluctuation time series signal based on time series data (physical quantity) such as the heartbeat cycle of a person exhibiting 1 / f fluctuation or the wind in the natural world. Data u (s) {s = 1, 2, 3, ... N}
(Of FIG. 3) is sent to the inverter 3 and the data correction means 7 which are the control means.

The inverter 3 drives the rotation motor 5 of the pump 4, which is the operating means, based on the fluctuation time series signal data u (s) sent from the ROM 8. At that time, the detection time series signal data z (s) {s = 1, 2 ,, is detected by the motor rotation speed detector 6 which is a detecting means connected to the motor 5.
3, ... n} is calculated (in FIG. 3).

In the data correction means 7, the fluctuation time series signal data is calculated based on the correlation between the detected time series signal data z (s) obtained by the motor rotation speed detector 6 and the fluctuation time series signal data u (s). Correct u (s) (see FIG. 2). Fluctuation time series signal data u (s) and inverter 3
When the transfer function between the detected time series signal data z (s) for detecting the operating state of G is set to G (s), these fluctuation time series signal data u (s) and detected time series signal data z (s)
And the transfer function G (s) can be expressed as z (s) = G [u (s)] (1). The transfer function G (s) is obtained by controlling the inverter 3 as the control means and the pump 4 as the operation means.
It is unique to the system composed of the rotation motor 5 and is usually determined by the characteristics of the motor 5.

In addition, the inverse transfer function of the equation 1 is G ^-1 (s)
, These fluctuation time series signal data u (s),
The detection time series signal data z (s) and the inverse transfer function are set to G
The relationship of ⁻¹ (s) can be expressed as u (s) = G ⁻¹ [z (s)] (2).

The detection time-series signal data z (s) of the above equation 1 is used as the fluctuation time-series signal data of the heartbeat period and the natural wind so that the power spectrum of the detection time-series signal data z (s) becomes 1 / f fluctuation. Detection time-series signal data x corrected by using the data based on u (s) and newly showing 1 / f fluctuation
(S) {s = 1, 2, 3, ... N} is obtained (in FIG. 3).

This corrected detection time series signal data x
The new fluctuation time series signal data v (s) {s = 1, 2, 3, which is obtained by substituting (s) into Equation 2 and corrected as shown in Equation 3.
... n} is calculated. v (s) = G ^-1 [x (s)] (3)

This corrected fluctuation time series signal data v
(S) is written in the ROM 8 via the ROM writing device 9.
The inverter 3 uses this corrected fluctuation time series signal data v
Based on (s), control is performed so that the power spectrum of the rotation speed of the rotation motor 5 of the pump 4 has a 1 / f fluctuation, in other words, the power spectrum of the rotation speed of the pump 4 itself has a 1 / f fluctuation.

FIG. 4 is a block diagram of a physical quantity fluctuation control device according to the second embodiment of the present invention. The same parts are designated by the same reference numerals and their description is omitted.

In the physical quantity fluctuation control device 1 in this embodiment, instead of providing the rotation speed detector 6 on the rotation motor 5 of the pump 4 as an operating means, a diaphragm or the like for detecting a change in the physical quantity such as jet pressure by the motor 5 or the like. The jet pressure detector 17 using is provided in the bathtub 15.

When the pump 4 is driven, the 1 / f fluctuation signal generator 2 generates a fluctuation time series signal based on time series data (physical quantity) such as the heartbeat cycle of a person exhibiting 1 / f fluctuation or the wind in the natural world. Data u (s) {s = 1, 2, 3, ... N}
5 (of FIG. 5) is sent to the inverter 3 and the data correction means 7 which are the control means.

The inverter 3 drives the rotation motor 5 of the pump 4, which is the operating means, based on the fluctuation time series signal data u (s) sent from the ROM 8. At that time, a change in the jet flow, which is a physical quantity operated by the motor 5, is detected by a jet pressure detector 17, which is a detection means, and detection time series signal data z (s) {s = 1, 2, 3, ... } Is obtained (in FIG. 5).

In the data correction means 7, the fluctuation time series signal data u is based on the correlation between the detected time series signal data z (s) obtained by the jet pressure detector 17 and the fluctuation time series signal data u (s) described above. Correct (s) (see FIG. 2). Fluctuation time series signal data u (s) and inverter 3
When the transfer function between the detection time series signal data z (s) for detecting the operating state of G is set to G (s), these fluctuation time series signal data u (s) and detection time series signal data z (s)
And the transfer function of G (s) can be expressed as z (s) = G [u (s)] (4).

In addition, the inverse transfer function of the above equation 4 is G ^-1 (s)
, These fluctuation time series signal data u (s),
The detection time series signal data z (s) and the inverse transfer function are set to G
The relation of ^-1 (s) can be expressed as u (s) = G ^-1 [z (s)] (5).

The detection time-series signal data z (s) of the above equation (4) is used as fluctuation time-series signal data of the heartbeat period or natural wind so that the power spectrum of the detection time-series signal data z (s) becomes 1 / f fluctuation. Detection time-series signal data x corrected by using the data based on u (s) and newly showing 1 / f fluctuation
(S) {s = 1, 2, 3, ... N} is calculated (in FIG. 5).

This corrected detection time series signal data x
Substituting (s) into Equation 5 and correcting the fluctuation time-series signal data v (s) {s = 1, 2, 3, ... N} as shown in Equation 6.
Ask for. v (s) = G ^-1 [x (s)] (6)

This corrected fluctuation time series signal data v
(S) is written in the ROM 8 via the ROM writing device 9.
The inverter 3 uses this corrected fluctuation time series signal data v
Based on (s), control is performed so that the power spectrum of the rotation speed of the rotation motor 5 of the pump 4 has a 1 / f fluctuation, in other words, the power spectrum of the rotation speed of the pump 4 itself has a 1 / f fluctuation. As a result, the power spectrum of the pressure of the jet flow ejected from the ejection port 13 becomes 1 / f fluctuation. According to the above-described embodiment, the pressure of the jet flow ejected from the ejection port 13 has a 1 / f fluctuation, which makes it possible to give the human body 16 a pleasant sensation while taking a bath. Note that, in the first and second embodiments, the power spectrum of the detected time series signal data x (s) is not necessarily limited to that of FIG. 3 and FIG. 5 as long as it is parallel to the 1 / f fluctuation. Of course.

[0028]

As described above, the physical quantity fluctuation control device according to the present invention has the following effects. (1) The fluctuation signal data is corrected according to the characteristics of the operating means such as a motor, and the operating means is operated based on the corrected signal data, so that the operating power spectrum of the operating means is reliably 1 / f fluctuation. To work. (2) The operating power spectrum of the physical quantity itself operated by the operating means is detected, the fluctuation signal data is corrected so that the detected data becomes 1 / f fluctuation, and the operating means is operated based on the corrected signal data. Therefore, the operation power spectrum of the physical quantity itself operates so as to have 1 / f fluctuation without fail.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a circulation bathtub using a physical quantity fluctuation control device according to a first embodiment.

FIG. 2 is a functional block diagram of data correction means.

FIG. 3 is a relationship diagram between a power spectrum of a pump rotation speed and a frequency of a physical quantity fluctuation control device according to the first embodiment.

FIG. 4 is a configuration diagram of a circulating bath using a physical quantity fluctuation control device according to a second embodiment.

FIG. 5 is a relationship diagram between the power spectrum of the pump rotation speed and the frequency of the physical quantity fluctuation control device according to the second embodiment.

FIG. 6 is a configuration diagram of a conventional circulating bathtub.

[Explanation of symbols]

1 ... Fluctuation control device, 2 ... 1 / f fluctuation signal generator, 3
... Inverter, 4 ... Pump, 5, 12 ... Motor, 6 ... Rotation speed detector, 7 ... Data correction means, 8 ... Read only memory (ROM), 9 ... ROM writing device, 10 ... Air intake section, 11 ... Jet nozzle, 13 ... Jet port, 14 ... Suction port, 15 ... Bathtub, 16 ... Human body, 17 ... Jet pressure detector.

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hiroshi Okada 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka Prefecture Totoki Kikai Co., Ltd. (72) Kenji Ito 2 Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka 1st-1st Totoki Equipment Co., Ltd.

Claims (2)

[Claims] 1. An operating means for operating a physical quantity such as wind speed, temperature, pressure, etc .; 1 / f fluctuation signal generating means; and 1 / f
Control means for controlling a physical quantity to be operated by the operating means based on fluctuation time-series signal data from the fluctuation signal generating means, and time-series signal data indicating an operating state of the operating means, which operates in cooperation with the operating means. A physical quantity fluctuation control device comprising: a detection means and a data correction means for correcting the fluctuation time series signal data so that the time series signal data detected by the detection means has a 1 / f fluctuation. 2. An operating means for operating a physical quantity such as wind speed, temperature, pressure, etc., 1 / f fluctuation signal generating means, and 1 / f
Control means for controlling the physical quantity operated by the operating means by the fluctuation time series signal data from the fluctuation signal generating means, and time series signal data indicating the state of the physical quantity such as wind speed, temperature, pressure, etc. operated by the operating means. Fluctuation control of physical quantity, characterized by comprising: detection means for detecting; and data correction means for correcting the fluctuation time series signal data so that the time series signal data detected by the detection means becomes 1 / f fluctuation. apparatus.