SU1049279A1 - Device for automatically controlling speed change gearbox with reducing gear - Google Patents

Abstract

1 g AUTOMATIC CONTROL DEVICE OF A STEERING TRANSMISSION WITH A DEMULTIPLICATOR, containing a gearbox determination unit, a gearbox control unit, a gear unit associated with the aforementioned units and a gear selector unit, in order to improve performance, to improve performance. characteristics of the engine by expanding the functionality of the device, the latter is equipped with a unit for determining the state of the amplifier, a unit for changing the gap, a decoder for the code ytrali gearbox gear box, code key and decoder „: code of the gear to be switched on, with the first input of the unit of the Range change, the input of the decoder of the code of the neutral box

Description

2. The device according to claim I, characterized in that the block of changing ranges contains a decoder having 1st, 2nd ... kth outputs, where K is the number of ranges in the demultiplicator, and 1st, 2nd , ... Kth logic, each of which contains a logical element AND, a logical element OR and RS-flip-flop, the first input of the logical element AND the first logic circuit connected to the first output of the decoder, the first input of the logic element AND the second logic circuit connected with the second output of the decoder, the first input of the logic element And the k-th logic circuit inen with the k-th output of the decoder, each OR element containing k-1 inputs is connected by its inputs to all outputs of the decoder, except for the output connected to the first input of the logic element AND its own logic circuit, the second inputs of each logical element AND are connected with the second input of the block of change of ranges, the output of the logical element AND and the output of the logical element OR in each logic circuit are connected respectively to the S- and R-inputs of the short-circuit trigger of its logic circuit, and the input of the decoder is connected to the first input range switch unit, and the outputs of the RS-flip-flops of all logic circuits form the output of the range shift unit.

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The invention relates to vehicle engineering, in particular, to automatic control systems for mechanical transmissions of vehicles, and can be used on vehicles having a stepped gearbox with a multi-speed transmission.

The closest to the technical solution of the invention is an automatic control device for a stepped gearbox containing a gearbox determination unit, a gearbox control unit, a gear unit associated with the aforementioned units and a gear selector unit 1.

The known device is a control electronic device for automatically controlling the change in vehicle speed, in the transmission of which a synchronized gearbox and clutch are installed.

The control electronic device is used in the presence of a stepped gearbox with shift elements and a gearbox control unit, which is kinematically connected to the gearshift clutches and gears are switched by these clutches. The control unit comprises a gear selection unit and a gearbox state detection unit, the inputs of the latter being connected to the gearbox sensors. The control device also comprises a gear shift block having logic elements. The gearshift block has an input part, which is functionally and electrically connected to the gear selector unit and the gearbox determination unit. The output part of this unit is functional.

And electrically connected to the control unit KP. The block select the transfer code transfer code that must be included in the gearbox. The selection of a transmission number may be made either by the driver or

automatically - by analyzing the speed of the vehicle and the position of the accelerator pedal. The code of the selected gear enters the gear shift unit. Here, the transmission code included in the CP comes from the KP state determination unit.

The shift unit is used to determine the validity of incoming codes, compare them, and determine the direction of the up or down switch. After these operations are performed from the output of this unit, the KP control unit is given a signal to put the KP into neutral, when reached from the shift unit, the code of the new gear to be switched on is sent to the KP control unit. The control unit KP decrypts the incoming code signal, amplifies it and transmits directly to the electromagnets of the actuators.

However, the algorithm of operation of the gear unit of the known device provides for controlling only a simple gearbox, therefore, if it is necessary to increase the efficiency of using engine thrust characteristics by installing a DKP transmission, the device cannot control a complex gearbox that combines OKP and DKP because The control of a complex KP imposes certain additional restrictions, namely: the inclusion of a new transmission in the GST can be carried out only when range in the range multiplier; Switching in the Demultiplicator is possible only if there is a neutral in the multiplicator. The purpose of the invention is to increase the efficiency of using engine characteristics by expanding the functionality of the device. This goal is achieved by the fact that the device, comprising its gearbox determination unit, gearbox control unit, gear shifting unit associated with said blocks and gear selector unit, is equipped with a multiplicator state determining unit, a range changing unit, the decoder code neutral gearbox, a code key and a decoder code gear included, with the first input of the block of the change of ranges, the input of the decoder code neutral gearbox and the first input of the code key connected to the output of the gearshift block, the output of the code key is connected to the input of the code decoder of the gear to be switched on, and the second input of the code key is connected to the first output of the demultiplicator state definition unit, the input of which is connected to the input of the transmission state determination unit, and the second output of the state determination unit 55 of the demultiplicator is connected to the second input of the range change unit, with the output of the range change unit, the output of the decoder of the transmission neutral code and the output of the code decoder of the gear to be switched on oedineny respectively with the first, second and third inputs of the gearbox control unit. The block-changer block contains a decoder having 1st, 2nd, ..., kth outputs, where k is the number of ranges in the demultiplicator, and 1st, 2nd, ..., kth logical a scheme, each of which contains a log-. And, logical element OR and RS-trigger, the first input of the logical element AND the first log} of the first circuit connected to the first output of the decoder, the first input of the logical element And the second logical circuit connected to the second output of the decoder, the first input of the logical element And k- logical circuit, connected to the kM output of the decoder, each OR element containing ki inputs connected by its inputs to all outputs of the decoder, except for the output connected to the first input of the logic element AND its logical scheme ,., the second inputs of each logical element AND is connected to the second input of the range changing unit, the output of the logical element AND and the output of the logical element OR in each logical circuit are connected to the S-and R-BXO of the RS-flip-flop of their logic, and the decoder input is connected to the first input of the range-changing unit, and the outputs of the RS-flip-flops of all logic circuits form the output of the range-changing unit. FIG. G is a functional block diagram of an automatic control device for a stepped gearbox with a multiple ratio; in fig. 2 is a block diagram of a block of changing ranges. In the proposed step transmission (KP) with a de-amplifier, the number of the gear engaged is defined as C i a i i b i, where ai is the number of the gear engaged in the main gearbox; The bi-number of the included range in the demultiplier; Ci number of the included gear of the whole gearbox. The neutrality of the whole KP is ensured by putting the main KP in neutral. The proposed device provides control of a stepped gearbox, equipped with actuators, as well as a set of sensors of known types, and they are functionally and electrically connected to the control device. The device comprises a gear selection unit .1, which is connected via bus 2 to gear shifting unit 3, the second input of which is connected via bus 4 to the output of gearbox condition detecting unit 5, whose input is electrically connected to gearbox sensors. The output of the gear shifting unit 3 is connected via bus 6 to the first input of the range changing unit 7, to the input of the decoder 8 of the transmission neutral code and to the first input of the code key 9, the output of which through the bus 10 is connected to the input of the decoder 11 of the included transmission code. The second input of the code key 9 via the bus 12 is connected to the first output of the demultiplicator state determination unit 13, the second output of the unit 13 via the bus 14 is connected to the second input of the range changing unit 7, and the input of the demultiplicator state determining unit 13 is connected to the state determining unit 5 no gearbox. The output of the range-changing unit 7 is connected via bus 15 to the first input of the gearbox control unit 16, the output of the decoder 8 is connected via Ts1in 17 to the second input of the gearbox control unit 16, and the output of the decoder 1G of the included transmission code is connected via bus 18 the third input of the gearbox control unit 16. To control the three-stage demultiplicator, the block diagram of the range changing unit 7 is used, although the proposed device allows the control of a demultiplicator with a number of ranges greater or less than three.

The range changing unit 7 (Fig. 2) consists of a range decoder 19 and a switching control logic circuits 20-22, and in general, their number is equal to the number of ranges in the demultiplicator ..

Each logical circuit contains an AND logical element, an OR logical element and an RS flip-flop, the first input of the AND 23 element of the logic circuit 20 connected to the first output of the decoder 19, the first input of the AND 24 element of the logic circuit 21 connected to the second output of the decoder 19 , the first input element AND 25 logical ifofi circuit 22 is connected to the third output of the decoder 19., the first and second inputs of the OR element 26 of the logic circuit 20 are connected respectively to the second and third outputs of the decoder 19, the first and second inputs of the OR element 27 of the logic circuit 2 1 is connected respectively to the first and third outputs of the decoder 19, the first and second inputs of the OR element 28 of the logic circuit 22 are connected respectively to the first and second outputs of the descrambler; torus 19. The outputs of the elements And the outputs of the elements IL And are connected respectively With the S-And R-inputs of the RS-flip-flop of its logic circuit, i.e. the output of the element And 23 and the output of the element OR 26 are connected respectively to the S- and R-input of the trigger 29 logic circuit 20, the output element I. 24 and the output element OR 27 are connected respectively to the S- and R-inputs trnggra 30 logic circuit 21, the output element And 25 n the output element OR 28 are connected respectively to the S- n R-inputs RS- TpHrrepa 31 logical scheme 22.

The input of the decoder 19 is the first input of the range changing unit 7; the second inputs of the And 23-25 elements are combined; they are the second input of the range changing unit 7; the outputs of the flip-flops 29-31 when-, are connected to the output of the range changing unit 7 and form a common bus 15. i

The device works as follows.

In selection block 1, the transmission is automatically or manually selected to select the transmission number, which must be enabled in the entire CP. The selected transmission number in video. A specific code, for example, a binary {bus} 2, enters block 3 of gear changes. There, the transmission code included in the whole gearbox enters via the bus 4c of the block 5 for determining the state of the gearbox, the input of which is electrically connected to the gearbox sensors. In gear shifting unit 3, the received codes are compared. If, as a result of a comparison, the difference between the values of the indicated codes is, the KP neutral code appears at the output of block 3, which, via bus 6, goes to the decoder 8 of the box neutral neutral code, where this code is converted and the unipolar (positional) code and the bus 17 enters the gearbox control unit 16, which ultimately should cause the main gearbox to be in neutral. . .

When performing a KP neutral operation, from the transmission state determination unit 5, the KP neutral code enters the gear shifting unit 3,

by the appearance of which on the output of block 3 the gearshift function, a code is received that arrives in block 3 via bus2 from block I of select- ing gear ii and. Then, through the bus 6, this code arrives at the first input of block 7;

of the ranges and to the first input of the code key 9. Bus 12 receives the code of the number of the included range of the demultiplator, and bus 14 receives the signal of the neutral of the demultiplicator. G appearance on bus 6 of the output signal of the block 3 gears

In block 7 of the range change, the range number is determined, which corresponds to the output code of block 3. In this case, if a change of ranges is required, the output signals of block 7 (on bus 15) do not have output signals. This leads;

to turn off the previous range and setting the amplifiers to neutral. When a bus signal 14 appears on the neutral signal of the demultiplicator, at the output of block 7, the code of the range number appears, which

must be included in the modulator This Code enters the bus 15 in the block

16 of the control of the gearbox in which it is amplified and transmitted directly to the electromagnets of the KP actuator. The output signal of the range changing unit 7 is maintained until a required change of the ranges / is required.

 The code of the number of programs received at the first input of the code key 9 via bus 6,

can pass through the specified code key only if at its second input there is a certain code turned on, the range coming from the demultiplicator definition block 13 by the pin 12. If the code on bus 6 needs to change the range, this code cannot pass through the code key 9 | Until this switching takes place, and at the second input of the code key 9, the output code of the demultiplicator state determination unit 13 does not indicate that the requested range is turned on. After switching on the required range, the code of the included transmission over the bus 6 through the code key 9 and the bus 10 is fed to the input of the decoder1 | the code for the gear engaged, where the gear number is determined for the main gearbox. Formed rykhodny signal of the code 11 decoder incl

Claims (2)

I: AUTOMATIC CONTROL GEARBOX WITH A DEMULATOR, comprising a gearbox condition determination unit, a gearbox control unit, a gearbox associated with said units and a gear selection unit, characterized in that, in order to increase the efficiency of use engine characteristics by expanding the functionality of the device, last. it is equipped with a state determination unit " demultiplier, block shift ranges decoder neutral code transmission, a code key and decoder code comprises transmitting, with the first block ranges .The inputs shift input deshif- ^'4 Rhatore neutral code transmission and the first key code input connected to the output gear unit, the output of the code key is connected to the input of the decryptor of the code for the included transmission, and the second input of the code key is connected to the first output of the demultiplier state determination unit, the input of which is connected to the input of the determination unit the state of the gearbox, and the second output of the demultiplier state determination unit is connected to the second input of the range changing unit, and the output of the range changing unit, the output of the gearbox neutral code decoder and the output of the gear shifter decoder are connected to the first, second, and third inputs of the unit gearbox control; 2. The device according to π. 1, characterized in that the range changing unit contains a decoder having the 1st, 2nd ... kth outputs, where k is the number of ranges in the demultiplier, and the 1st, 2nd, ... K- logic circuitry, each of which contains an AND logic element, an OR logic element, and an RS trigger, with the first input of the AND logic element of the first logic circuit connected to the first output of the decoder, the first input of the AND logic element of the second logic circuit connected to the second output of the decoder, the first the input of the logical element And the k-th logic circuit is connected to the k-th output de an encoder, with each OR gate containing k-1 inputs connected by its inputs to all outputs of the decoder, except for the output connected to the first input of the logical element AND of its logic circuit, the second inputs of each logical element AND are connected to the second input of the range changing unit , the output of the AND gate and the output of the OR gate in each logic circuit are connected respectively to the S- and R-inputs of the RS-trigger of its logic circuit, the decoder input being connected to the first input of the range changer ones, and RS-flip-flops the outputs of all logic circuits form a shift unit output ranges.