JPS59140934A - Controller for liquid pressure buffer of variable damping force type - Google Patents

Abstract

PURPOSE:To decide whether a contactor is contacting correctly with each conductive pattern and providing regular rotary angle position detecting signal by considering the shape of conductive pattern in rotary angle position detector. CONSTITUTION:In a rotary angle position detector to be employed in buffer controller, a contactor 34 rotatable synchronously with motor is slided against first and second conductive patterns 31A, 32A formed in rotary angle regions (a)-(c) of motor splitted into three. Here first conductive pattern 31A is formed across the starting position a1 in first rotary angle region (a) to the end position (b2) of second rotary angle region (b). While second conductive pattern 32A is formed across the start position (b1) of second rotary region (b) to the end position (c2) of third rotary angle region (c). Then a circular common conductive pattern 33A is formed between both patterns 31A, 32A.

Description

[Detailed description of the invention]

The present invention provides a variable damping force In which heavy objects such as automatic trucks and the like can be placed in the dark. Regarding the control device for pressure #1 instruments. Conventionally, a motor yr9f with a piston rod inside or outside π is rotated at a constant angle depending on the driving situation f, such as automatic driving or automatic driving. Then, from this rotational force π, the rotary control force of the rotary force 11 is adjusted to the desired damping force adjustment. A control device for controlling this hydraulic escalator is known. Figure 1 is a block diagram of a control circuit using the conventional σ] 't1411 installation as a substitute, and Figure 2 is a block diagram of the configuration of a hydraulic pressure enhancer controlled by this control circuit. FIG. Therefore, an overview of the conventional control circuit and night pressure suppressor will be explained based on FIGS. 1 and 2. In Fig. 1, 1 is a selector switch for selecting one of the desired damping force setting positions (in this conventional example, high, medium, and low σ), and 2 is a selector switch for selecting one of the three damping force setting positions. Cσ] A selection base signal generation circuit which receives one selection signal 7 selected from the selector switch IK and generates a selection base signal according to the selection signal; 3 is from this A selection base signal generation circuit 2; The output selection standard signal and the output signal corresponding to the rotational angular displacement 1tvc of the motor 4 for adjusting the damping force of the hydraulic threat device, which will be described later? Compare these selections X signal and output signal σ]
There is a signal comparison circuit F6 for determining mismatch or coincidence, and 5 is a motor drive circuit that operates upon receiving each mismatch or coincidence signal 7 outputted from the signal comparison circuit 3. 4 is a motor drive circuit.
A motor driven or stopped by the motor drive circuit 5,
6 is the rotational speed of the motor 4, more specifically, the rotational angle W position of the oscillation shaft 4a of the motor 4 is detected and an output signal corresponding to the rotational angular position is inputted to the signal comparison circuit 3. 1 vertical detection d, v. Reference numeral 7 denotes a signal conversion circuit for manually inputting the anchor point number outputted from the rotation angle position detector 6 to the signal comparison circuit 3. . On the other hand, T is an adjuster 8f for adjusting the damping force by the motor 4Vr; r: a hydraulic pressure softener having a rotary structure, the details of which are shown in FIGS. 2 and 3f. In Fig. 2, 9 is a cylinder with one end sealed and filled with hydraulic fluid, and 10 is the cylinder M c of this cylinder 9.
h It is a piston rod that is pawned and extends in a closed state. Reference numeral 11 denotes a piston slidably inserted into the cylinder 9 at π, and the piston 11 divides the inside of the cylinder 9 into two chambers, an upper liquid chamber 12 and a lower liquid chamber 13. I'm here. This piston 11 has each liquid chamber 12 in the upper part and the F part.
13 minutes ke f summoning operation hydraulic fluid π Nagareshima resistance? A damping force generating means 14 is provided to generate the damping force. 15 connects the piston rod 10 and piston 11 -f. The stud 150 has a generally cylindrical shape, and the inside 1'r of the stud 150 has an axial through hole 17 that communicates with the adjuster accommodating part 16 and the inside of the adjuster accommodating part 16 and the lower I night room 13. Don't let it get formed. 4 studs 1
5α] Cylindrical wall portion +5a [is a cross-sectional view taken along line Vr in FIG.
If you follow the Vr opening 4, orifices 18, 19.degree. 20, which are spaced apart from each other by a distance VrI5r in the circumferential direction, are drilled with different openings. The stud 15σ] is accommodated in the hollow part of the piston mid 10 in the adjuster accommodating part 16 Vr, IK t-L, y,
-Motor 4vr 0 rotation drive 3 reduction adjuster 8 rotation 11t
The regulator 8 has a through hole 22°h in the axial direction that opens and communicates with the lower liquid chamber 13π.
Biko σ) ^ Hole 22 and 11n stud 15Vr with either one of each orifice 18, 19, 20 and optional V
Communication holes 23 capable of rilJ are formed respectively. In addition, the input end (work, predetermined σ) harness 24 of the motor 4
, 24 as shown in FIG. 1, and the motor 4 is driven by the motor drive circuit 5 of C. Next, Fig. 4 and Fig. 5 show the specific configuration of the small device 6 for the io1 rotation angle displacement (fOI mentioned above).In other words, the 1 rotation angular position f41! As shown in FIGS. 4 and 5, an insulating substrate 30 and concentric conductive patterns 31 . The second conductive pattern 32, the common conductive pattern 33, and the rotation center of the motor 4 (more specifically, the drive shaft 4a of the motor 4) serve as the rotation center of the first conductive pattern 32 and the common conductive pattern 33. each second conductive pattern 31.32 and the common conductive pattern 3. It consists of a contactor 34 that makes sliding contact. And the first
．． Each second conductive pattern 31.32 is located at each orifice 18, 19.20 provided in the aforementioned stud 15. In order to selectively match the communication hole 23 provided in the adjuster 8,! i, Different rotational position detection signal output ″″t′
5. It can be formed into a predetermined shape6.
-f, that is, the communication hole 23 and each oriSwiss 18, 19.
, 211 corresponds to the corresponding position of the motor 4] Let the stop positions be X, Y, and Z, and the rotation angle of the motor 4 that rotates +01 through those positions X, Y, and Z. Give the area 1. Each of the second and third rotational angle areas bfi a
, b'+ and Cπ. 2nd, 3rd and '$4
of each rotation angle area a, b, and C, from the starting end position a1 of the first rotation angle area a to the final position t#ta2 K of the first rotation angle area a.
It is formed into an arc shape. Also, the conductive pattern 32 &! , the starting end position of the rotation angle region V%ML2 at the position V%ML2 inside the first conductive pattern 31, and the terminal position of the collar are formed in an arc shape π. Note that B is an electrode of the first conductive pattern 31, A is an electrode of the second conductive pattern 32, and C is an electrode of the common conductive pattern 33.
Between B, C' and the first and second conductive patterns 31, 32 and the common conductive pattern 33, conductive patterns 3ta, 32a, and 33a, which are covered with an upper insulating layer, are connected. It is connected to the In FIG. 4, reference numeral 35 is a deceleration device that decelerates the motor 4 at the same time and transmits it to the adjuster 8. However, this deceleration image point mechanism 35 is not provided, and the motor 4 is directly driven. Axis 4a
Adjuster 8-bit may be recommended. In addition, each electrode 37 is connected to a harness for extracting a rotational angle position detection signal, and 38 and 38 are rotatably supported by a shaft. !I!ll, 39 is the case. According to the configuration of the Tx control system and hydraulic pressure relief device described above, the vertical movement of the piston rod 10 along with the piston IIY causes the vertical movement of the piston rod 10 to The spring of the valve plate 26.26 which closes the opening end of each of the five oil passages 25.25 makes up the damping force generating means 14v. While resisting the force, the liquid in each of the upper and lower liquid chambers 12 and 13 is allowed to flow.The desired damping force can be secured.On the other hand, the automatic Depending on the running conditions of the koshiki, etc., the damping force setting position can be set at any Q) damping force setting position, for example, η mouth damping force setting position # shown in Fig. 1.
Select N and select switch 1? When the switch is switched, a selection base signal generating circuit 2 outputs a selection signal corresponding to the selection signal from the ON/OFF switch 1. This selected X signal generation time/ft2 is connected to the signal comparison circuit 3,
In addition, this comparison circuit 3π receives the selection basis ugly signal σ] and
From the rotation angle position detector 6, the oscillation shaft 4a of the motor 4 is detected.
Since the rotational position detection signal indicating the rotational angular displacement l1lin at the current point in time is converted into a digital value by the signal conversion circuit 7 and inputted, these two signals are compared in the signal comparison circuit σ. . This signal comparison circuit 3 outputs a match signal when the two signals match, and outputs a mismatch signal when they do not match.
T-ro. Therefore, the motor drive circuit 5 is activated by each of these signals. In other words, if the motor/pivot circuit 5f match signal is manually input, the supply of drive current from the motor drive circuit 5 to the motor 4 is stopped, and the motor The rotation of 4 is stopped. On the other hand, if a mismatch signal is not input to the motor drive circuit 5, the drive is supplied to the motor drive circuit 5 and the motor 4 in response to this mismatch signal. The motor 4 continues to rotate until the output signal from the signal comparison circuit 3 becomes a matching signal. In this way, when selecting with the changeover switch 1, the orifice 19K was provided with a stud 15π. The communication hole 23 of the adjuster 8 is an open communication hole. For this reason, the upper and lower liquid chambers 12. +31fJt missing 1IIL Part of the working fluid flowing through the orifice 19
By passing the damping force through the bypass through the damping force generating means 14, it is possible to adjust the n/1 ICB ring obtained by the damping force generating means 14 and maintain the desired reduction force. By the way, the rotational angular position detector 6σ) contact 34 indicates the rotational angular displacement of the motor 4 by 1° flC! This is for detecting the first rotation angle detection signal, and this contact 34 is connected to the first conductive pattern 31 or the second conductive pattern 32.
When in contact with the electron microscope, [11σ) rotational position detection signal is missing, and when not in contact with them, Vr is configured as follows. If motor 4σ) damping force setting position X, Y, Z (see figure 5 of car)
When the K# probe 34 is positioned, the rotation angle detection signal obtained from each electrode A and B becomes K as shown in Table 1. Table 1 (A, B: electrodes, X, Y, Z = damping force setting positions) In this way, each 'yIc' force setting position X of the contactor 34 is determined. Different rotation angle detection signals depending on Y and Zif? , each electrode A
, B can be detected from Q), and this rotation angle detection signal l signal f can be input to the signal ratio formula circuit 3F through the 7-cut circuit. Once the desired rotation angle detection signal is detected, the changeover switch 10 is moved 232 times through the four holes of the adjuster 8 to the corresponding positions X, Y, and Z. You can @, so @
Pressure # Opposition! T's Yft decline; it is possible to make adjustments accurately and quickly. However, as mentioned above, the angular position detector 6 rotates every 5 times.
is the contactor 34 and the first. Second conductive pattern 31.3
Depending on the presence or absence of contact with 2, π, h:V is different co-rotating angle position detection signal 7 is output and σ]. , 4! rsI
If the contact state with the butter saws 31 and 32 becomes poor and the contactor 34 separates from the patterns 31 and 32, the rotation angle ranges a, b, and C of the motor 4 (
7) Izu fLO) i night area π#- child 34 is located. Even in 1IIj1@, signals of "0" and "0" are taken out from each electrode A and B as the same position detection signal. Therefore, a different rotation angle position detection signal different from the regular rotation angle position detection signal is adopted as the old σ month rotation angle displacement 11416 output signal 2, and the desired 1-kite damping force adjustment cannot be performed. It just becomes 1x<
The disadvantage was that the R damping force was constant, making eastward running unstable. The present invention has been devised to overcome the drawbacks of the conventional art, and is designed so that a regular rotational angle position detection signal can be obtained by touching each conductive turn Vri'E. Are there any?
Or, since the contact is not in contact with each conductive turn, an abnormal rotational angle position detection signal is being obtained. A control device that can easily and reliably determine f is proposed.
It is. An embodiment of the present invention will be explained below based on the drawings. Note that the same components as those of the conventional example are given the same reference numerals, and detailed explanation thereof will be omitted. Fig. 6 shows the conductive turn σ)-fl+ of the encoder used in the VR rotation position detector with the configuration of the VR adjustment control device according to the present invention.
I'm begging. In FIG. 2nd and 3rd each 1 (
2) Five of the rotation angle regions a, b, and C, the first σ1lio1
Start position of turning angle region a +1. From a, the terminal position of the rotation angle region S, Vrg is formed. -11, 32A is a second arc-shaped coupled pattern formed at a predetermined distance of 1 inch from the conductive turn 31A of 8g1, and the starting end of the second co-rotating angle region bσ) is located;
33A is a common conductive pattern, and ANL and B are the first and second σ) conductive patterns 31.
This is an electric picture of fi- and 362A. 11■ In the rotation angle position chamber 6 having the conductive pattern described above, the rotation angle j' of the motor 4 as shown in Figure IK6;
ff area” * b + Cr d inside vc ) H formed n
1.7- 1st and 2nd each 4 +M pattern 31k
and 32AJ: with 34 contacts 1'II in contact,
Each polarization A, , Flff obtained 71. ro + i1 rotation angle rotation angle 1 table 2 This table 2 It is clear that each electrode A, B or I-1
The obtained rotational angular displacement 1 yoshi detection signal is necessarily a signal containing ``l''.

[, also due to a failure of the contact piece 34, each conductive pattern 31A,
32AK pairs of contacts 34σ] If a non-contact condition occurs, each electrode A. The n signal obtained from B becomes "oJrOJ. Therefore, the contactor It should be possible to easily and reliably determine whether or not a failure such as poor contact has occurred in 34. First, since the structure of each conductive pattern 31A, 32 is extremely simple, it is suitable for large leaf production. It is clear from the above description that M[, in the present invention. The first magnetically conductive pattern includes at least first, second and third magnetically conductive patterns.
Of each rotational angle area, it is formed from the starting position of the 1st σ month-1 rotational angle 1w area to the terminal position ttr of the second rotational angle 1w area, and on the other hand. ! 2 conductive pattern, the first 41
The second rotary meat IW is made by dividing the interval between the pattern and the predetermined σ]
Since it is formed from the starting end position of the area to the 3rd Q) IJ flesh turning area pupil σ) terminal position vrH, ;
Detect the rotation angle It detection signal obtained from each f pole as a so-called oven mode (-""0") by sliding a contact on each of the first and second conductive patterns. Never happened. Therefore, when there is a failure such as poor contact of the contactor to each of the four skin patterns π, rl. /
-1, so-called open mode (rJ rO'')
It is necessary to distinguish f and B from the signal of π. Therefore, is it the ``i'' word that is output from each ring 1 yen or the ``1'' σ] signal? If the signal is all "0" and "0" Q), you can immediately take appropriate measures such as calling for parts such as contacts. Section σ) It is possible to maintain stable running performance.

[Brief explanation of drawings]

Figure 1 shows the conventional variable damping force type hydraulic If# control [q
Figure 2 is a block diagram showing the structure of the hydraulic shock absorber, and Figure 3 is a sectional view taken along line ■-■ in Figure 2. FIG. 84 is a sectional view showing the main part of the rotation angle position detector employed in a conventional control device, and a sectional view taken along the line V-V in FIG. 5, G1, and FIG. 4. The diagram is a bottom view showing an example of the conductive pattern of the rotation angle position detector used in the a control device according to the present invention. 1... Selector switch, 2... Excess selection signal generation circuit. 3...Signal comparison circuit. 4...Motor, 5...Motor drive circuit, 6...Rotation angle position detection 4, 8...Adjuster. 30... Insulating substrate, 31A...° first conductive pattern, 32A... 8J2 conductive pattern, S... Control circuit, T... Hydraulic pressure ambiguous device, a... Bo 1 1 rotation circularity area, b...second rotation circularity area, C...third rotation circle IW area al, hl, cl-starting end position, ``!+b
2+c2...Terminal position. 5th cause■ Figure 6

Claims (1)

[Claims] Ill A switch for selecting a desired control force. [σ] Selection of 1 or 1 selected by the changeover switch
7σ]! ! The selection signal π is generated in response to the selection signal π. What is the output signal corresponding to the co-rotation angle lit f'71 of the motor that rotates the adjuster for adjusting the rotation? Compared to,
The signal comparison circuit 101 detects the mismatch or match between the output signal and the word comparison circuit. a motor drive (b) path, a motor driven or stopped by this motor reduction circuit, and at least a second and a third rotation angle range of the motor. The circular arc-shaped first and second conductive patterns 7x formed inside the motor are brought into sliding contact with each other by an 11-turn drive at the same speed as the rotation of the motor, and the first and second conductive patterns are brought into sliding contact with each other. 101st rotation angle position signal at 1 IfK of the contactor's reducing force setting position 1IfK? In the variable damping force type hydraulic pressure disconnection control device equipped with a manual rotation angle displacement one-position adjuster, the first conductive pattern has at least the first conductive pattern. Each of the second and third rotational angle IW regions 5 is formed from the starting end position of the first rotational angle region to the terminal position of the second rotational angle i8g region σ].
, the second conductive pattern is spaced a sufficient distance from the first conductive pattern, The terminal position vr of the 3rd σ] 11th rotation angle region is formed from the starting end position of the F, 2 rotation angle IW region. Equipment ht.