JPS59175629A - Clutch control device - Google Patents

Abstract

PURPOSE:To allow a propeller of a ship to rotate below the specific minimum for the revolving speed of the prime mover, by furnishing a control circuit, by which a friction clutch is slip rotated in response to a driven machine revolving speed setting signal to indicate a speed below the minimum revolving speed of the prime mover. CONSTITUTION:If a number-of-revolutions setting device 50 is set to a level below the minimum number of revolutions Nmin of a prime mover 1, a number- of-revolutions setting device 51 emits a number-of-revolutions setting signal Ns for a propeller 3 as a slip number-of-revolutions signal N1s via a 6, and a number-of-revolutions setting device 54 emits the min. number of revolutions Nmin as a number-of-revolutions setting signal N2s via line 10. Thereby the prime mover 1 will operate at the minimum revolving speed Nmin, and the pressing force in a friction clutch 2 is controlled by slip signal N1s to provide slip condition. Thus the propeller 3 rotates at a speed below Nmin.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clutch control device that performs slip control using a clutch.

The prime mover that drives equipment such as ship propulsors and pumps is
There is a limit to the minimum number of revolutions that can be used, and it is common that the machine cannot be used below the minimum number of revolutions.

However, in terms of operation of driven equipment, it is often required to be able to continuously control the rotational speed even below the minimum rotational speed. Approximately 1 lil on the driving motor side,
One of the ways to simultaneously satisfy the demands of the rotting υ roots is to keep the rotational speed of the prime mover above the minimum rotational speed by sliding a friction clutch installed on the inside of the shaft. There is a slip control 1 that controls only the rotational speed of a driven device to a minimum rotational speed or less.

Figure 1 shows the disconnection of a single-oscillation clutch used for slip control...J
It is a diagram. The friction clutch 2 used for slip control is generally connected to an input shaft 21 or a driving plate, and is driven by a motor, as shown in FIG. Output 1III12
2il'i is connected to the driven spinning device and is driven by the frictional force of the clutch plate 24. That is, 1. Torque Qc is transmitted from the input shaft 21 to the output shaft 22 by the frictional force acting on the clutch plate 24, and this transmitted torque Qc becomes a load on the prime mover and at the same time serves as a driving force for the driven equipment.

The clutch plate 24 is pressed against the clutch piston 23, and the clutch piston 23 is pressed against the clutch plate 24.
The pressing transmits a transmission torque Qc according to the first equation from the input shaft 21 to the output shaft 22 according to the force.

Qc-Kc・μ・FC...(1) In the first equation, Kc is a constant determined by the shape of the friction clutch 2, μ is the friction coefficient of the clutch plate 24, and the pressing force by the Fc u clutch piston 23 is the force. . In slip control, the pressing force by the clutch piston 23 manipulates the transmitted torque Qc by adjusting the force Fc, thereby controlling the rotation speed of the output shaft 22.

By the way, the friction coefficient μ of equation 1 is the input IIIl]2
1 and the output shaft 22 (= rotational speed of the long shaft - rotational speed of the output shaft), and as shown in Fig. 2, as the rotational speed difference ΔN increases, wear increases. Friction coefficient μ
It has the characteristic that it becomes small.

Therefore, the transmitted torque Qc is
It changes as follows with respect to 0 rotation speed fluctuation.

In other words, the rotation speed of the input shaft 21 increases (or decreases)
In this case, since the rotational speed difference ΔN increases ('#, decreases), the friction coefficient μ decreases (increases) and the transmitted torque Qc decreases (increases). On the other hand, when the rotation speed of the output shaft 22 increases (decreases), the rotation speed difference ΔN decreases (increases), the #friction coefficient μ increases (Chuseok), and the transmitted torque Qc increases (decreases). )do.

This means that, from the perspective of the prime mover that drives the input shaft 21, as the number of rotations increases (decreases), the load torque decreases (increases) by a small amount, which causes the problem that the number of revolutions increases (decreases) instead of changing. This is equivalent to driving a stable load. On the other hand, when viewed from the side of the driven plate device driven by the output shaft 22, as the number of rotations increases (decreases), the driving torque increases (decreases). Stable lol, if! This is equivalent to being driven by IJ a.

When implementing slip control, it is necessary to eliminate instability caused by the friction coefficient μ that occurs in both the driving prime mover and the driven equipment.

Conventional clutch control devices aimed at slip control are
The pressing operation operates the force Fc so as to maintain the output shaft 220 rotational speed at the rotational speed setting value by comparing the output shaft 220 rotational speed with the rotational speed set value. was determined regardless of fluctuations in the input shaft 210 rotation speed. In other words, with the conventional clutch control device, among the problems mentioned above, the instability that occurs on the covered equipment side can be solved, but the instability that occurs on the driving motor side cannot be solved at all, and all of the problems are solved! l! IJ at
It depended on the rotation speed control. For this reason, the prime mover used for slip control must stably control the rotation speed of a load with unstable characteristics as described above at a low output equivalent to 4 fJ below the minimum rotation speed. I! This was a big burden on the rotation speed control of the IJ machine.

The purpose of the present invention is to eliminate all instability caused by l# friction coefficient, to realize stable slip control that is less dependent on the rotational speed control of the prime mover, and to conveniently operate the covered wJ equipment. Thus, it is an object of the present invention to provide a clutch control device that can set the rotation speed of a driven device regardless of whether or not slip control is performed.

The present invention will now be described in detail with reference to Figures ilI]IVc.

FIG. 3 is a system diagram of an embodiment of the present invention, showing a state in which the clutch control device 5 is used in a boat 6. As shown in FIG.

The prime mover 1 is coupled to a friction clutch 2 via a power transmission shaft 11, and a friction clutch 21-, J: power transmission lII[I
] 12, it is coupled to the propulsion device 3 as a covered wJ device. The clutch control device 5 is a device that gives commands to the base plate 1 and the friction clutch 2.

The fourth section is a block diagram of one embodiment of the misfire J.

The engine rotation speed setting signal "ij N2s" output from the clutch control device 5 is input to the Saiken 1 via the line 11, and the rotation speed corresponding to the prime mover rotation speed setting signal N2s is maintained. The front force transmission shaft 11 connected to the original wJ Sakura 1 is connected to the input shaft 21 of the friction clutch 2 on the other end, and transmits the output of the motor 1 to the friction clutch 2.M friction latch 2 includes a clutch control device 5
The force setting signal Fcs output from line 12
The pressing forces the clutch plate 24 with a force corresponding to the force setting signal Fcs, and a predetermined torque is transmitted from the input shaft 21 to the output shaft 22. - Tsuka transmission shaft 12
connects the output shaft 22 of the friction clutch 2 and the propulsion device 3,
The transmission torque transmitted from the I#' friction clutch 2 force shaft 21 to the output shaft 22 is transmitted to the propulsion device 3, and the propulsion device 3 is put into production.

The first rotation speed transmitter 13 is connected to the output shaft 2 of the friction clutch 2.
2, that is, the rotation speed of the propeller 3 which is a driven device, and outputs the propeller rotation speed N1 to the clutch control device 5 via the line 13. Second rotation speed transmitter 1
4 is the number of rotations of the input shaft 21 of the Hanako clutch 2, that is, the original! Detect the rotation speed of Ipno machine 1 and start! I! 1J machine rotation speed times 7N2 is output to the clutch control device 5 via the line 14.

In the clutch control device 5, the third rotation speed setting device 50
The propeller rotation speed setting signal Ns for setting the rotation speed of the 11L advancer 3 is sent to the first rotation speed setting device 51 via the line 15.
Output to. The first rotation speed setting device 51 communicates with q1 = advance gear rotation setting signal S, and outputs it via the slip rotation 41K setting signal Nls key line 16.

As shown in FIG. 5, the first rotation speed setting device 51 sets the propeller rotation speed setting device 6 to 6 if the propeller rotation setting price Ns is less than the predetermined minimum rotation speed Nm1n of the prime mover 1. Fixed (S
The slip rotation speed setting signal N'ls has a characteristic that the slip rotation speed setting signal N'ls becomes an extremely large value if the propeller rotation failure setting signal Ns is equal to or higher than the minimum rotation speed Nm1n. have

The first subtractor 52 receives the slip rotation speed setting signal Nls output from the first rotation speed setter 51 via the line 16, and also receives the slip rotation speed setting signal Nls output from the first rotation speed transmitter 1-3. A propeller rotation signal N1 is input via line 13. The first subtractor 52 calculates the input slip rotation speed setter 9Nls and the propeller rotation speed signal N1, and calculates the rotation speed setting value ΔN1 (=N1s-N'l) via the line 17. The output signal is output to the slip control unit 1 arithmetic unit 53.

The slip control calculation unit 53 performs appropriate calculations such as proportionality, differentiation, and integration on the rotation speed W and the rotation angle ΔN1 outputted from the first subtractor 52, and calculates the propulsion yarn rotation speed by slip rotation speed. A control signal Fcl is output to the adder 57 via the line 18'z to set the pressing force so as to correspond to the multiple Nls.

On the other hand, the propulsion ship rotation & setting signal Ns output from the third rotation speed setting device 5o in IA branches from line 15 to line I! 9 is input to the second rotation speed setting device 54. The second rotation speed setter 54 communicates the propeller rotation speed setting signal Ns and sets the prime mover rotation speed setting signal N2s on the line f.
Output via lO.

As shown in FIG. 6, the second rotation speed setting device 54 sets the minimum rotation speed Nm1n to the prime mover rotation speed setting signal N2' if the propulsion line rotation setting signal Ns is less than the minimum rotation speed Nm1n.
and the thruster rotation speed setting signal Ns is the minimum rotation speed Nm1n
If the above is the case, the characteristic is that the propeller rotation speed setting signal Ns is set as the prime mover rotation speed setting signal N2s.

The 20th station, the calculator 55, has the number of rotations outputted from the second rotation speed setting device 54! The second circular setting number N2s is input via the line llO, and the second circular error is inputted via the line llO.
It is input via line 14 to the prime mover rotary motor N2 outputted from line 14. In the second subtractor 55, the input thread cutting rotation speed setting number N2s and the rhino vibration rotation speed N2s are calculated.
2, and calculate the number of rotary stock 1 d number ΔN2 (=N2-N
2S) is output to the compensation calculator 56 via line Jll.

Compensation calculation unit 568-j If the rotational speed deviation signal ΔN2 output from the second subtractor 55 is subjected to appropriate multiplication such as proportionality or differentiation, and the μ motor rotation error increases (or decreases),
Accordingly, the negative torque of the seat movement control 1, that is, the transmission torque of the friction clutch 2 increases (or decreases).
The compensation signal % F c 2 is sent to adder 5 via line 112.
Output to 7.

The adder 57 receives the control No. 48 Fcl output from the slip control calculator 53 via the line 18 and the compensation calculator 56.
The pressing force is set by adding the force setting (M number Fc5 (=Fcl+F
As c2), it is output via the line 127 to the external friction clutch 2.

Next, the operation of the propulsion device 3 by the clutch control device 5 of the present invention will be explained. First, set the third rotation speed constant device 50! l! A case where the IJ control 1 is set to a minimum rotational speed N min or less will be explained. In this case, due to the giJ characteristic, the first rotation speed setting device 51 is set to the propulsion thread rotation speed setting device (No. 8 Ns
is output as the slip rotation speed signal Nls via line 16, and the second rotation speed setting device 54 outputs the minimum rotation speed Nm1 as the slip rotation speed signal Nls.
Line 1!1 with n as Hara UJ Kaede rotation guy setting double number N2s
Output via 0. Therefore, the driving force @l is operated at the minimum rotational speed Nm1n, and the propulsion device 3 is restricted to rotation '#, which is less than the minimum rotational speed Nm1n set by the third rotation number setting device 50 due to the slip of the friction clutch 2. be done. especially,
In an equilibrium state in which the driving torque generated by the prime mover 1 is equal to the transmission torque of the friction clutch 2, and the transmission torque of the friction clutch 2 is equal to the absorption torque of the propulsion device 3, the driving torque number N2s and the claw number J Both post-rotation error signals N2 are set to the lowest rotation speed NIn1n, and the compensation calculator 56
The litigation error deviation number ΔN2 and the compensation calculator 5 are input to
Compensation D-; Mfc2 which is the output of 6 becomes zero. That is, the slip control calculation device 5'3 is connected to line 1.
The control boost force Fcl outputted through 8 sets a pressing force that provides the transmission torque of the friction clutch 2 necessary to maintain the equilibrium state in 11.

Here, when the propeller rotation speed increases (or decreases), the rotation speed deviation signal ΔN1 decreases (increases), and as a result, the control Isa number Fcl, that is, the pressing force setting signal Fcs decreases (increases). do. Therefore, when the propeller rotation speed increases (decreases), the transmission torque of the friction clutch 2 increases (decreases) due to the increase (decreased imitation) of the friction clutch 2.
, the pressing force is set by the force setting (by decreasing (increasing) S Fcs, the pressing force is decreased (increased) or offset, and the instability on the output shaft side of the friction clutch 2 is eliminated.

Furthermore, when the driving root rotation increases (or decreases), the rotational speed deviation @ ΔN2 increases (decreases), and as a result, compensation (No. 8 Fc2, that is, the pressing force setting signal F
cs increases (decreases). Therefore, the decrease (increase) in the transmission torque of the friction clutch 2 due to the decrease (increase) in the friction coefficient that occurs when the driving root rotation increases (decreases), and the full pressing is canceled out by the increase (decrease) in force However, instability on the input shaft side of the friction clutch 2 is eliminated. In this way, the problem of instability that occurs when the friction clutch 2 is subjected to slip control is solved, and the rotational speed of the propulsion device 3 can be stably controlled to be equal to or lower than the minimum rotational speed Nm1n of the J porridge machine 1.

Next, set the third rotation speed setting device 50 to the lowest rotation speed N of the prime mover 1.
A case will be described in which a charge of m1n or more is collected. In this case, due to the above-mentioned characteristics, the first rotation speed setting device 51 sets a sufficiently large amount of the slip rotation speed setting signal Nls to the line I! 6, and the second rotation W setting device 54 is
The boost force Ns is set due to the rotation of the propulsion string, and the boost force Ns is set due to the rotation of the prime mover.
2s via line 110. Therefore, the first edition political deviation numbers Δ and Nl are sufficiently large values regardless of the propeller rotation speed, and from the slip control calculator 53 to the line 7
Through 8i, Taiki's 01 Hakuzu Fcl also becomes a sufficiently large value. Once the friction clutch 2 was pressed, the force increased, and the input 11i121 of the I"I"ht clutch 2
and ■Rikikozan 22 were 1st and the same time Kaedemasa drove u+'J without slipping. This results in the same result as when the prime mover 1 moves 1 and the contact call 3 moves 1 & forward.

On the other hand, the 2S is output from the third rotation K BZ '7 via line 19 from the 50
Since it is equal to 1 - jj call setting times NS,
The propulsion device 3 will be cut at a rotational speed that corresponds to the 1E base call private setting number Ns.

As a result, the operator only needs to operate the third rotation speed setting device 50, and for setting the rotation speed of the prime mover 1 to the minimum rotation speed Nm1n or less, the prime mover 1 is set to the minimum rotation speed Nm.
The thruster 3 is driven at a desired rotational speed by rotating at a constant speed and causing the friction clutch 2 to slip. Also, even when the prime mover rotational speed is increased due to the application of disturbances, etc., a quick compensation signal is issued for the slip control of the friction clutch 2, so that the propulsion unit 3 can stably rotate at the desired rotational speed. I can do it.

In addition, when the rotation speed of Kaede Shikiri 1 is set to the minimum rotation speed Nm1n or more, a large pressing force is applied to the friction clutch 2, and the friction clutch 2 is held so as not to slip.
It is possible to automatically and stably rotate the propeller at the same number of rotations as the three propellers 11. In this way, the boat operator can operate the boat 6 from stop to maximum speed using the third rotation speed setting device 50.

Note that the clutch control device according to the invention is applicable not only to a propeller as a propulsion device of a ship shown in this embodiment, but also to a pump,
There is no doubt that it can be applied to drive all kinds of equipment such as power generation plates.

Further, the clutch control device □ of the present invention can be easily realized by combining various calculation elements such as mechanical and electric types.

As described above, according to the present invention, instability can be eliminated on both the input shaft side and the output shaft side, and stable slip control that is less dependent on the rotation speed control of the prime mover can be realized. can. Furthermore, simply by operating the third rotation device regulator, the temporary drive column can be rotated 11 times at the same rotation speed as the prime mover, regardless of whether or not the slip 1V1 is controlled.

[Brief explanation of drawings]

The first difference is the friction clutch 20 disengagement and depression, the second figure is a graph showing the relationship between the rotational force difference ΔN and the Yasushi Yasuyasu μ, and the third figure is the resistance diagram of one embodiment of the present invention. Figure 4 is a block diagram of one embodiment of this V61.
A graph showing the relationship between s and the slip rotation slave setting number N 1 s, Figure 6 is the propulsion thread rotation 1 transmission setting 4F 4 Ns
This is a graph illustrating the N range between the motor rotation speed setting temperature N2s and the motor rotation speed setting temperature N2s. 1... Prime mover, 2... Friction clutch, 3... Propulsion unit, 5... Clutch 1NIJ control device, 11.12...
Power transmission shaft, 13...first rotation speed transmitter, 14...
・Second rotation speed generator, 50-・Third rotation speed setter, 51...First rotation speed setter, 52...Lth subtractor, 53...Slip $1 ” Haier operator, 54...Second rotation speed setting device, 55...Second subtractor, 56...
Compensation calculation unit, 57... Accelerator Fig. 1 Fig. 2 Rotation speed 1ΔN

Claims (2)

[Claims] (1) In the control device-1 of the hthx clutch that causes slippage, which is installed at 101 between the prime mover and the driven plate, the rotational speed of the driven plate is controlled by the minimum rotation rate that can be used for the operation of the original bvt machine. a first rotation speed setting device for setting one rice car;
Driven 11νJ4 1st rotation speed 3 to detect failure of rotation
a 6-item archery device, and a slip circuit 1 sent from the first rotating 4R redundant device.
a first subtractor that subtracts the number of parts sent from the first rotational speed transmitter from the version number and setting signal; (In response to No. 1, the push of the friction clutch necessary to maintain the rotation speed of the moving equipment at the rotation speed set by the first rotation speed setting device in giJ is performed by a slip control calculator that calculates the force. , a second rotation speed setting device that sets the rotation speed of the Harawani machine to a minimum rotation speed or higher, a second rotation speed transmitter that detects the rotation speed of the prime mover, and from the second rotation speed transmitter described in 1fj. a second subtractor that subtracts the original VJ machine rotation speed setting number sent from the second rotation speed setting device from the sent prime mover rotation speed signal; A compensation calculator that corrects the force for pressing the friction clutch according to the rotational speed of the prime mover, and a control signal sent from the slip control calculator and a control signal sent from the compensation calculator. 1. A clutch control device comprising: an adder that adds seven sleeves and controls the pressing force of a friction clutch. (2) It has a third rotation speed setting device that sends the false rotation speed setting of the driven equipment to the first rotation speed setter in MfJ and the second rotation speed setting device in IIJ, V#, and the several-stage regulator. The drive plate is the third
Clutch control device' according to claim 1, characterized in that the rotation speed is controlled to a rotation speed set by a rotation speed setting device.