JPS63217962A - Vibration type generating motor-driven engine - Google Patents

Abstract

PURPOSE:To stabilize the functions of generating and motor-driving by connecting a flywheel through a connecting rod instead of a vibrator which becomes a permanent magnet to a rotor. CONSTITUTION:An engine body is composed of a vibrator 1 which becomes a permanent magnet, the core 2 and the winding 3 of a stator, an outer frame 4, bearings 5 and 6, a flywheel 8, a connecting rod 7, a detecting permanent magnet 9, and a detecting winding 10. An engine control system is composed of a preamplifier connected to the winding 10, a band filter, a digital delay circuit, and a microcomputer, etc., and, when any load is applied to the flywheel 8 to rotate it, the vibrator 1 is reciprocated through the rod 7. A vibration signal is delayed or processed by the microcomputer to obtain the vibrating period of the vibrator, and a delay time adapted for generating or motor-driving is delivered on the basis of the period as a command signal. The motion of the vibrator is smoothened by the flywheel 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a generator and an electric motor, and particularly relates to a vibration generator-motor having both power generation and electric motor functions.

[Conventional technology]

A brushless servo motor consists of a semiconductor power conversion device (power amplifier) that includes the motor body, an angle/angular velocity detector, a current/voltage/magnetic flux detector, a temperature detector, and various analog/digital electronics for ignition control. However, the optimum capacity of the motor is at most several kilowatts, the motor structure cannot necessarily be called simple or robust, and the range of use is limited to 7-cut units for precision machines.

[Problem that the invention seeks to solve]

The purpose of the present invention is to create a power generation system with a simple, robust structure that can freely function as either a power generator or an electric motor for the load, can also handle large-capacity loads, and can be used for multiple purposes.
The purpose of the present invention is to provide a dual-purpose electric electromagnetic force engine.

[Means for solving problems]

In conventional generators and motors, the rotor is replaced with a vibrator that is a permanent magnet, and the stator is also changed to a shape that matches this.
A flywheel is connected to the vibrator via a connecting rod. Additionally, a permanent magnet for detection is embedded in the vibrator. Furthermore, an outer frame for sliding the vibrator and supporting the stator is provided, and a detection winding is embedded in the outer frame.The detection winding includes a bandpass filter, a digital delay circuit,
Connect the power amplifier (including the power supply) in series and connect it to the stator windings. Only one series circuit of a bandpass filter and a digital delay circuit can be used, or a plurality of them can be connected in parallel.

On the other hand, a microcomputer (equipped with an A/D converter) is connected to the detection winding, and its output is connected to each band filter and each digital delay circuit.

[Effect]

In order to freely have both power generation and electric functions.

The vibration signal of the vibrator detected by a permanent magnet embedded in the vibrator and a detection winding embedded in the outer frame is passed through a bandpass filter to remove disturbances, and then the vibration signal is delayed through a digital delay circuit. , the delayed signal is amplified by a power amplifier as a current source, and the electromagnet is driven by this current source.

When delaying the vibration signal, the vibration signal is processed by a microcomputer to determine the vibration period of the vibrator, and based on this, a delay time suitable for power generation or electric power is sent to the digital delay circuit as a command signal. . Furthermore, the center frequency of the bandpass filter is also set using the frequency (reciprocal of the vibration period) of the vibrator sent from the microcomputer.

In addition, by using a flywheel, the movement of the oscillator is made smooth, improving the controllability of the engine, and changing the shape of the mechanical energy involved in the engine from vibration motion, which is used in a narrow range, to rotary motion, which is used in a wide range of use. replace it with

〔Example〕

FIG. 1 shows the structure of an engine body according to an embodiment of the present invention.

Furthermore, the engine control system is shown in FIG.

In Fig. 1, the engine body consists of a vibrator 1 that serves as a permanent magnet, a stator core 2 and winding 3 that are fitted into the vibrator, an outer frame 4 that slides the vibrator 1 and fixes the core 2, and a bearing ( For linear sliding) 5,
6. Flying wheel 8. Connecting rod that connects the vibrator 1 and the flywheel 8.
It consists of a detection permanent magnet 9 embedded in the vibrator 1 and a detection winding 10 embedded in the outer frame 4. The stroke of the vibrator 1 is set so that when the flywheel 8 makes one revolution, the magnetic poles of the vibrator 1 and the magnetic poles of the iron core 2 overlap at both dead centers.

In Fig. 2, the engine control system consists of a preamplifier connected to the detection winding 10, a bandpass filter and a digital delay circuit coupled in series with this (this series circuit may be only one, or two or more may be coupled in parallel). It consists of a power amplifier, its power supply, and a microcomputer (with a built-in A/D converter) that sets the center frequency of the bandpass filter and the delay time of the digital delay circuit. Next, the operating principle of this embodiment will be explained.

When a certain load is applied to the flywheel 8 and the flywheel 8 rotates, the vibrator 1 makes a reciprocating linear movement through the connecting rod 7.

Bearings 5 and 6 provided on the outer frame 4 allow this movement to occur smoothly. When the vibrator 1 vibrates linearly, an induced electromotive force is generated in the detection winding 10 on the outer frame 4 side by the detection permanent magnet 9 of the vibrator 1. This is proportional to the vibration velocity V of the vibrator 1, and is assumed to be in a state of almost simple harmonic motion.

The vibration speed V of the vibrator 1 obtained from this electromotive force is v=vo 5in2zft! : Frequency t: Time This electromotive voltage is amplified by a preamplifier, and this amplified signal is input to a microcomputer. Here, a built-in A/D converter converts the voltage analog signal into a digital signal, and a microcomputer performs sampling work to calculate the frequency f.

A digital signal of f is sent to the bandpass filter as the center frequency setting signal of the bandpass filter, and its reciprocal 1/f is calculated to be the vibration period T of the vibrator 1, and the engine t! When functioning as an electric motor, a signal with period T is sent to the digital delay circuit as a delay time setting signal for the digital delay circuit. Further, when the engine is to function as a power generator, a 1.5 T signal is sent to the digital delay circuit as a near-extension time setting signal for the digital delay circuit. In the digital delay circuit, only a signal proportional to the vibration velocity V is input through a bandpass filter, so its output signal is a delayed signal, v=vo sin 2tcf (t-()τ:T(
It is expressed as a value proportional to 1.5T (electric power) and 1.5T (power generation).

This delayed signal is power amplified by a power amplifier as a current source, and sent to the stator winding 10 to generate an electromagnetic force between it and the permanent magnet of the vibrator 1. This electromagnetic force F is proportional to the delayed signal.

It is expressed as F=Fo sin 2tcf (t-t). The vibration waveform showing the phase relationship between vibration speed and electromagnetic force is
As shown in the figure, the electromagnetic force that is in phase with the vibration speed has an electric function, and the electromagnetic force that is in the opposite phase has a power generation function.

Generally, m is 0. Or, when it is an arbitrary natural number, τ=mT...Electric function τ= (m+0
．． 5) T...A power generation function is considered, and if the delay time setting signal sent to the digital 7j/delay circuit is determined accordingly, it can function as both power generation and electric power, and furthermore, it is possible to use the intermediate value between them. By finely adjusting and determining the value according to the load of the engine, it is possible to smoothly switch from power generation to electric power, and from electric power to power generation.

When these setting tasks are processed by a microcomputer, they can be done much faster than normal load fluctuations, so it is possible to stably maintain power generation and electric power functions regardless of actual load fluctuations. Furthermore, even if a disturbance were to enter the control system of this embodiment, the bandpass filter would always remove frequencies other than the frequency f of the oscillator 1, and from this fact, the stability of the engine could be maintained. It will be done.

According to this embodiment, when the motion of the vibrator is almost simple harmonic,
One engine body has both power generation and electric power functions, regardless of changes in the frequency of the vibrator due to load fluctuations.
This can be sustained. In addition, the functions of the flywheel and bandpass filter ensure stability of power generation and electric power functions.

Furthermore, since the device for detecting the vibration of the vibrator is simple, an engine with a simple and robust structure can be obtained.

Furthermore, by finely adjusting the delay time signal sent to the digital delay circuit by operating a microcomputer, it is possible to smoothly convert from electric power to power generation, and from power generation to electric power.

Next, a control system of an engine that is an application example of the present invention is shown in FIG. (Three in the figure) are inserted in parallel. Its functions are described below.

When a certain load is applied to the flywheel 8 and one flywheel rotates, the vibrator 1 makes a reciprocating linear movement through the connecting rod 7. This motion is generally considered to be a one-period oscillation, if not a simple harmonic motion. When the vibrator 1 moves linearly, the detection winding 10 on the outer frame 4 side is caused by the detection permanent magnet 9 on the vibrator 1 side.
The electromotive force induced in the oscillator is also considered to be proportional to the vibration speed of the oscillator.

The vibration principal component is also the vibration principal component V1 of the vibration speed of the vibrator:
VO15in2πfzt tx Second-order frequency vz=vozsin2πft(t-τ') tz: Second-order frequency va=voasin2πfa(t-τ') ta
: Proportional to the tertiary frequency. (However, depending on the degree of distortion in the waveform of the vibration velocity of the vibrator 1, the number of vibration principal components to be considered may be two, four or more, but the basic function is the same as described below. Consider this: Amplify the electromotive voltage with these oscillating components using a preamplifier, and input this amplified signal to the microcontroller.

The built-in A/D converter converts the voltage analog signal into a digital signal, and the microcomputer performs sampling to calculate the period T of the periodic vibration.

The digital signal is sent to each band filter as the center frequency setting signal of each band filter, and the reciprocal numbers 1/fx, 1/fz, and 1/fs are calculated to obtain the principal component element 1 of the vibration period of the vibrator 1. Tx.

When T3 is used and the engine is operated as an electric motor, τ1:
T 1 Tx = T z + τ' τ3 = T3+
The signal τ1 is sent to the digital delay circuit as a delay time setting signal for the digital delay circuit. Also, if the engine is to function as a power generator.

τ5=1.5T τ2=1.5Tz+τ′τ3=
A signal of 1.5Ta+τ' is sent to the digital delay circuit as a delay time setting signal for the digital delay circuit. In each digital delay circuit, the vibration velocity components V1 and V2 are passed through each band filter.
, only a signal proportional to V3 is input, so its output signal is a delayed signal, v1=vot 5in2πJz(t-τt)v2=vo
z 5in2 πfz(t-τz) vs= voa 5
It is expressed as a value proportional to in2πJa(t-τ3).

This delayed signal is power amplified by a power amplifier as a current source, and sent to the stator winding 10 to generate an electromagnetic force between it and the permanent magnet of the vibrator 1. The main vibration component of this electromagnetic force is proportional to each delay signal, Ft=Foz 5in2πft(t-tz)Fz=Fo
z 5in2πfz(t-tz)Fs=Foa 5in
It is expressed as 2πfs(t-ta). Here, when the electromagnetic force has an in-phase relationship with the vibration speed for each vibration component, the engine has an electric function, and when it has an anti-phase relationship, the engine has a power generation function.

In general, -ml + TnZ When HTna is 0 or any natural number, tx=mtTt τx=mxTz+c'τa=ma
Ta+τ' - electric function t t= (m
z+0,5) Tttx=(mz+o,5)T
z+τ' ra= (ms+0.5) Ta+v' - A power generation function can be considered. Here, τ' and τ' are constants determined by the shape of the engine body, and are unrelated to the load on one flywheel 8. The delay time setting signal to be sent to the digital delay circuit can be determined according to these conditions.

The engine can function as both a generator and an electric generator, and furthermore, by finely adjusting and determining intermediate values between these depending on the load on the engine, the function can be smoothly switched from generating to electric, and from electric to generating. When processing these setting tasks with a microcomputer, it can be done significantly faster than the speed of general load fluctuations (flywheel 8
(promotes this effect), it is possible to stably maintain power generation and electric power functions regardless of load fluctuations. Furthermore, even if a disturbance were to enter the control system of this application example, the bandpass filter would always remove frequencies other than the principal component frequencies ft, fx, and fs of the vibrator 1. , the stability of the institution is maintained.

According to this application example, if the vibrator does not vibrate monotonically but periodically vibrates, the series circuit (bandpass filter and digital By selecting the number of delay circuits), the same effect as in the embodiment can be obtained. In other words, an engine with higher efficiency than the embodiment can be obtained.

Furthermore, the vibration detection mechanism required to drive the engine is simple and does not require precision.The engine itself is also simple in structure.
Highly reliable institutions are easily obtained.

Furthermore, since a flywheel is used to replace vibrational motion with rotational motion, the engine can be used in an extremely wide range of applications.

〔Effect of the invention〕

According to the present invention, the electromagnet can freely and instantaneously delay the phase of the electromagnetic force acting on the vibrator with respect to the speed phase of the vibrator, according to the vibration period of the vibrator, so that power generation and electric An engine whose functions can be maintained freely and whose functions can be smoothly switched can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a vibratory generator-motor engine according to an embodiment of the present invention, Fig. 2 is a control circuit diagram of the engine, Fig. 3 is a vibration waveform diagram showing the operating principle of the engine, and Fig. 4 is 1 shows a control circuit diagram of an engine that is an application example of the present invention. 1... Vibrator, 2... Fixed core, 3... Winding wire.
ρ...5, ['Nyama-i Agent Patent Attorney Katsuma Ogawa □]

Claims (1)

[Scope of Claims] 1. In an electromagnetic engine comprising a vibrator serving as a permanent magnet, an electromagnet, an outer frame for sliding the vibrator and fixing the electromagnet, a flywheel, and a connecting rod connecting the vibrator and the flywheel. , a detection permanent magnet is provided in addition to the vibrator, a detection winding is provided in the outer frame, and an electromotive force signal generated between this and the detection winding due to linear vibration of the vibrator, that is, The vibration signal of the vibrator is passed through a bandpass filter whose center frequency can be changed and a digital delay circuit whose delay time can be changed in accordance with the vibration period of the vibrator, and the output signal is power amplified. driving the electromagnet;
A vibratory generator-motor engine characterized in that the delay time can be instantaneously and freely finely adjusted using a microcomputer or the like.