DE2206927C3 - Speed controller with hydraulic power supply - Google Patents

Description

The requirements of the particular system are M. . _p . _R ,

can be reached without the hydraulic unit {1 to 8), spring, Es J ^ ™ J £ ** & * ° ^e :

the setpoint adjustment unit (9), the rigid and the trailing, at ^. ^ Αί & ί

change giving feedback (10-14); where the respective measuring mechanism.

leAnpa.ungd ^ uriherr.icMwill.dethisoll- ^^ S ^

SS ^ ST ⁶ WiS ^P D? RAg "S; Siwerknfe electrical or electronic. Messwerkeinstelhing is in the known way ^M _{^^^ installation of the} measuring mechanism in it ^edernk ° ^mbinaU ° ^nen **" _ao the R ^ JSU ** at the known reg-

hydrauHscher Hüfsenejge ^^ j «

The setting of the rigid and the quaking ⁶ ^ feedback can be changed in a linen idle end regulator. An impairment

flow of the course of the P-range over the rotary

number adjustment range is not possible. Multiple

the P range must be set in the low speed with the known controllers so that a

The present invention relates to a 30 sway free run is achieved. In the higher speed Speed controller with hydraulic auxiliary energy then results in an unnecessarily large P range Da d.e Control of the speed in the case of internal combustion engine - maximum speed from structural grandees meis nen, steam and water turbines, which can not be increased after the throw d.e full load speed The modular principle is that the measuring mechanism only achieves this at a lower speed, which is practical is an independent, interchangeable unit. 35 A reduction in service means that if a reduced

It depends on the operational failure whether one does not go to the solution of a larger P range in the upper dfehzah The task of a P-controller (proportional controller) or casual is left with the use of today's got one PI controllers (proportional-integral controller) only allow controllers to increase their size turns and whether z. B. a disturbance variable feedforward before the moment of inertia When using 4 ° PI controllers can see the remaining P-range small

When speed control of power generation are held, the temporary P-range results aggregates, there is often the requirement that the speed is nevertheless in a corresponding orolia. The object of the invention is darm, for the to keep stant. In this case, a PI controller with the problems and application mentioned above is a case in point a P range of »zero« is required. Should such a 45 a regulating device find the universally integrated power generating unit can be set in parallel with a second and only with minor changes are switched, then this is only possible if the respective requirements are adapted at least one controller can be used as a P controller or as a PI controller. .., .. -njj u

is executed with a permanent P-range. With two This task is achieved according to the invention thereby

PI controllers with a P range of “zero” would distribute the load that the controller is triggered by the measuring mechanism setting not possible. Such plants were commuting, the requirements of the respective plant being adapted. In other words, the load would always be able to move from one unit to the other, without the hydraulic unit, the nominal value of which wandering attitude, the rigid and the yielding jerk

For the control of vehicle engines where tion change; whereby the adjustment ^ thereby erogelt the LeHauf speed and a maximum Mo- 55 is enough that the setpoint-dependent change of the gate speed is to be limited, a P controller P range is adapted to the requirements. The required. Between the unleren idle speed change of the measuring mechanism position is done in loading and the maximum engine speed and the maximum known way through various Fedemkombina engine speed, the filling regulation is achieved via functions or form springs, the controller. ^6o Every movement of the servomotor is triggered by a subsequent

In the case of power generating sets, it may be necessary to have an additional linkage or a rigid linkage directly on the one that transmits the overshoot range through a power switch. The setpoint adjustment is to reduce the feedforward control. This is also housed in the hydraulic part. The desired electrical load measured and takes place at a Load fluctuation value setting according to the principle of the Hubunterrung corrects the filling, before the division Belastungsände- 6 _S, that is, causing a change in speed from the total stroke (manipulated variable) of the Meßrung. works is only used to control a setpoint

In the automatic operation of systems, a small partial stroke is used. The rest of the measuring mechanism The control device for the additional monitoring stroke is used for setting the setpoint.

Is ₀ embodiment of the invention is shown in the lung and will be discussed in more detail below.

Fig. 1 shows a speed-stroke diagnosis. The partial strokes are drawn in.

at minimum * speed
brf Ξ ^ ΓΤ ^ '
at maximum

(18) is dismantled, whereby the piston (6) upwards and thus the pilot control sleeve (7) downwards goes. This reduces the feed a little, the weights of the measuring mechanism (16) go together, 5 the pilot control sleeve (7) and the control slide (8) return to the starting position, and the machine runs again at constant speed. These processes apply to the P range zero. If a P range has arrived in addition, the rigid return to the

P & nden invention shown.

^ Yon the drive shaft of the governor is a toothed ^ Minuinpe (1) driven with check valves ^ ssbcn and is therefore independent of the direction of rotation.

id d oil i di Dk

^Sl

* Rgg ^ _{comes in addition} ^ _rigid return

As an example, Tn F i I 2 is the execution of the present effect. In doing so, the rigid return invention shown. rod (10 and 12) add the pilot control sleeve to

ibll d Rl id i Zh lifted, pilot control sleeve (7) and control spool (8)

come to rest above the starting position, and

bcn and is therefore independent of the direction of rotation. the machine runs according to the P range. The oil from the gear pump into the pressure 15 is faster.
* neicher (2 and 3) funded. The pressure accumulator (3) in Fig. X. are the motion processes for the

^ L i provided overflow bore with which the control slide (8) and the pilot control sleeve (7) for the

pressure is limited. The pressure ¹ is drawn in for extra-average speed. T ^ to the power switch (7 and 8) and to the top of the The movement processes are somewhat idealized.

SteUmotors (4) out. The servomotor has put an ao. In reality it is an em-

differential piston, on the top of which there is always the oscillation process. .

i Oil pressure is effective. The servomotor controls the

(15) and the return linkage (10 and 12) measured in the opposite direction. Z & L · The F i g are attached to the return linkage. 3 shows the overall structure of the controller Der

Cable options for the speed (9) through 25 regulators is based on the modular system. An-S or lowering the pilot control sleeve (8) and the drive (20), control unit (21), front plate (22) and

of the remaining P-range (11) through measuring mechanism (23) are each independent units ^ SSoS changing the gear ratio from F i g. 2 and 3 is really the measured value

1, h , The transmission ratio a : b can be changed in such a way that it is a completely separate unit and thus aborted that it is NuU, ie that there is no rigid mechanical, electrical or electronic Dren feedback. In this case, then the counter can be executed

in the state of the art, the speed can be accessed independently of the hydraulic unit. By manual Vcr S kSSant. The regulating shaft (15) can be set on the power switch on the Reglejruf and SkfühVgestänge (14) for the yielding rear 35 the function of all parts of the Hydraul.keinheit ge Führune actuated. The yielding return can be checked. ..

by changing the transmission ratio Since both the setpoint setting and the

ί ^ can be adjusted using the lever (13). With rigid and yielding backlash η der a movement of the SteUmotor is accommodated by the feedback control unit (21), the bin can tiSd returned piston (6) and thus the 40 position of the measuring mechanism take place in such a way that an optimal (7) adjusted. The spring of the elastic adjustment possibility of the regulator to the door requirement

deT

outward and

_Setting lk »rven

Passed the top, the piston goes up and turns the regulator (15). 1 «> direction klemere 60 Filling. At the same time, the back lift is used

- 6 ₅

grows. Especially with ^^ 'Srieb.n.otoitn is a m ^ p. riches absolutely

r ^{wdse a flawless}

The speed closed again

Curve"

Sh on at low speed ^ setting is on

dmck, which is now required through the throttle opening of the throttle.

Curve III shows the setting of the final controller with idle speed. This setting is usually used for Locomotive and vehicle drives used. In the indifferent speed range, the filling set via the setpoint adjustment.

In the present case, these changes are only made by the mechanical speed chisel achieved the replacement of the transverse springs.

For the monitoring of automatic systems, according to the invention, a solenoid valve that is on the controller is attached. In Fig. 5 shows the arrangement.

When the valve (24) is actuated, the setting of the setpoint adjuster and the Control slide shut down the system immediately. When the valve is actuated, the line from the force switch is disconnected (7 and 8) to the servomotor (4) and at the same time pressure oil is transferred to the underside of the servomotor (4), whereby the servomotor turns the Regiilierwelle (15) into the zero position.

In the case of a speed controller, for example, the monitoring devices for monitoring the oil pressure, the oil temperature, the charge air pressure, etc., connected will. This facility can also be used for emergency shutdown.

In Fig. 2 the controller is shown as a PI controller. According to the invention, both the rigid and the yielding feedback directly to the force switch.

In Fig. 6 the feedback linkage of the controller is shown, if this is designed as a P controller and ίο this is provided with a feedforward control. There is also a differential lever on the feedback lever (10) (25) attached by the set point adjustment

(26) and from the servomotor of the feedforward control

(27) is actuated.

If, for example, the load on a power generator is changed, the Servomotor (27) of the feedforward control immediately moves the pilot control sleeve (7) so that the servomotor (4) of the controller, the filling of the engine is already changed before the change in speed caused by the change in load occurs on the speed measuring mechanism affects.

For this purpose 2 sheets of drawings

Claims (1)

l 2 rite connected, so that if a stoppage occurs, p. . -. . the entire system is shut down. When turning patent claims: ^ control of internal combustion engines can 1. Speed controller with auxiliary hydraulic energy z. B.feKühJwa ^ mperamdj engine oil pressure, the to regulate the engine speed for combustion 5 boost pressure, the exhaust gas temperature, etc. machines, steam and water turbines that become so.