WO2015099440A1 - 건설기계의 메인컨트롤밸브의 제어 방법 및 제어 장치 - Google Patents
건설기계의 메인컨트롤밸브의 제어 방법 및 제어 장치 Download PDFInfo
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- WO2015099440A1 WO2015099440A1 PCT/KR2014/012783 KR2014012783W WO2015099440A1 WO 2015099440 A1 WO2015099440 A1 WO 2015099440A1 KR 2014012783 W KR2014012783 W KR 2014012783W WO 2015099440 A1 WO2015099440 A1 WO 2015099440A1
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- Prior art keywords
- control valve
- joystick
- displacement
- valve
- value
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
- E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
- E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2004—Control mechanisms, e.g. control levers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
- G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
- G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
- G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
Definitions
- the present invention relates to a control method and control device for a main control valve of a construction machine, and more particularly, to a control method and control device for a main control valve of a construction machine including at least two control valve units controlled by one joystick. It is about.
- the hydraulic system is equipped with a joystick, and by operating the joystick, a specific control valve unit is operated and an actuator connected to the control valve is operated.
- FIG. 1 is a view illustrating an example in which two types of control valves are controlled by one joystick.
- the joystick J may be provided with two joysticks J1 and J2 as shown in FIG.
- the joystick J can be operated in the front-rear direction or in the left-right direction.
- the actuator has a linear type and a rotary type.
- Linear type actuators are either contracted or extended.
- Rotary type actuators operate in clockwise or counterclockwise rotation. That is, all actuators perform the opposite action.
- one joystick (J) can generate a total of four signals, and one actuator requires two signals, thus controlling two types of actuators.
- either joystick J1 may be in charge of a boom and a bucket.
- the other joystick J2 may be in charge of the arm and the swing.
- the boom actuator When the joysticks J and J1 are pulled, the boom actuator may be extended to operate, and the boom may be raised, and when pushed, the boom actuator may be contracted to lower the boom. Similarly, when the joysticks J and J1 are flipped to the left side, the bucket actuator expands and the bucket crowd is operated. When the joysticks J and J1 are flipped to the right side, the bucket actuator is contracted and the bucket dump is operated.
- 2 and 3 are hydraulic circuits comprising two types of control valve units.
- the hydraulic oil is discharged from the pump P.
- the hydraulic fluid is moved along the central hydraulic line L1.
- First and second control valve units 10 and 20 are installed on the central hydraulic line L1.
- the auxiliary hydraulic line (L2) is arranged in parallel with the central hydraulic line (L1).
- the auxiliary hydraulic line L2 provides hydraulic oil to the subordinated control valve unit even when the senior control valve unit is in operation.
- the priority and the subordinate order means the rank given in the order close to the pump P on the central hydraulic line L1.
- each of the first and second control valve units 10 and 20 returns hydraulic oil from each actuator, and the returned hydraulic oil is discharged through the discharge hydraulic line L3.
- any particular control valve unit 20 may include a third control valve unit 30 so that the hydraulic fluid flow rate is reduced when the hydraulic oil is supplied from the auxiliary hydraulic line (L2). That is, the third control valve unit 30 normally provides hydraulic oil to the corresponding control valve unit 20 in the auxiliary hydraulic line L2, but requires a higher flow rate from another actuator, for example, a boom actuator. Can work.
- the third control valve unit 30 When the third control valve unit 30 is operated, the flow rate provided to the corresponding control valve unit 20 is reduced, so that more flow rate can be provided to the other control valve unit. Referring to FIG. 2, when the third control valve unit 30 is operated, the flow rate provided to the second control valve unit 20 to control the bucket actuator is reduced, and the first control valve unit to control the boom actuator. More flow rate is provided at (10).
- the joystick (J) does not cause any problem when the boom and the bucket are operated at the same time clearly.
- the operator can operate the joystick J in the left or right direction with the intention of operating the bucket but can be operated with the joystick J inclined forward or rearward.
- the operator did not intend to operate the boom, but there is a problem that the boom is operated due to an operation error of the joystick.
- Manipulating the joystick J to operate the bucket causes the bucket crowd pilot pressure pi Bk cd or bucket dump pilot pressure pi Bk dp to move the spool in the second control valve unit 20. More specifically, when the bucket crowd operation is attempted, the spool of the second control valve unit 20 is shifted in position so that hydraulic oil is provided to the head of the bucket actuator, and the hydraulic oil on the bucket actuator rod side is returned and discharged.
- the boom raising pilot pressure pi Bmup is applied to the spool of the first control valve unit 10.
- the first control valve unit 10 blocks the central hydraulic line L1 and receives hydraulic oil through the parallel hydraulic line L2. That is, the boom operation is not intended but can be operated.
- the second control valve unit 20 blocks the central hydraulic line L1 and the flow path of the parallel hydraulic line L2 is reduced due to the operation of the boom. do. More specifically, the flow rate of the hydraulic fluid to be provided to the second control valve unit 20 by the flow rate provided to the boom actuator is reduced, the operation of the bucket may be unstable.
- the operator does not intend to move the boom, but there is a problem that the boom moves due to a mistake in operating the joystick J, and the operation of the bucket may be operated differently from the worker's will. have.
- 4 is a flowchart illustrating a conventional main control valve control method.
- 5 is a view for explaining a conventional main control valve control method.
- the joystick is operated so that the displacement of the joystick is input to the controller (S110).
- the joystick displacement amount When the joystick displacement amount is input to the control unit, it is necessary to determine whether it is a value for single operation or a combination operation. If multiple joystick displacements are entered even in standalone operation, the minimum threshold is applied. For example, when 100% of the joystick is operated as much as possible, it is generally determined as a composite operation when a joystick displacement value of 1% to 5% or more is input (S120). That is, the amount of joystick displacement that is input in combination is judged to be a noise signal and ignored.
- valve stroke is calculated according to the true joystick displacement value (S130).
- a command for controlling the valve according to the valve displacement value is output (S140). If the control valve units 10 and 20 are valves that are electronically controlled, the command may be output as a current value. The current value is to open the corresponding control valve (see 10, 20) and provide the desired flow rate to the corresponding actuator to perform the desired operation.
- FIG. 6 is a graph illustrating a valve displacement compared to a joystick displacement according to a conventional main control valve control method.
- 7 is a graph illustrating the corresponding actuator pressure in comparison with the pump pressure according to the conventional main control valve control method.
- the conventional main control valve control method has a problem in that an unwanted control valve unit can be operated and waste oil as much as an unwanted actuator is operated.
- the conventional main control valve control method has a problem that the fuel economy is worse as the waste oil.
- the present invention provides a control method and a control device of a main control valve to control a control valve unit by receiving a signal of a joystick displacement amount in order to control at least two types of control valve units with one joystick. Therefore, it is possible to control the control valve unit only when the unintentional joystick displacement is ignored and is actually a signal for controlling the control valve unit by determining the authenticity of the newly input joystick displacement when the control valve is in operation. have.
- a first joystick signal or a second control valve unit for controlling the first control valve unit from one joystick Receive a second joystick signal for controlling the. It is determined whether a joystick signal for controlling the other control valve unit is input when one of the first and second control valve units is in operation. If a joystick signal for controlling the other control valve unit is input when any one of the first and second control valve units is in operation, the valve operation start threshold for the joystick displacement is input. The valve start threshold value is set upward by applying a weight. When the input joystick displacement value satisfies the upwardly set valve operation start threshold value, the valve displacement value corresponding to the input joystick displacement value is calculated to output the valve displacement value.
- the first control valve unit may include a bucket control valve
- the second control valve unit may include a boom control valve
- the first control valve unit may include an arm control valve
- the second control valve unit may include a swing control valve
- an actuator control start time may be delayed according to the raised valve start limit value.
- the upward valve start threshold may be set to 15% or less of the maximum joystick displacement.
- the raised valve start limit value may be set to be proportional to the control valve displacement of the control valve unit in operation among the first and second control valve units.
- the minimum value of the raised valve start threshold may correspond to the minimum value of the control valve displacement
- the maximum value of the raised valve start threshold may correspond to the maximum value of the control valve displacement. Can be.
- the first joystick signal for controlling the first control valve unit from one joystick or the second control valve unit
- the joystick displacement A processor configured to set the valve operation start threshold value upward by applying a weight to a valve operation start threshold value, and the input joystick displacement value satisfies the valve operation start threshold value set by the processor. Outputting the valve displacement value by calculating the valve displacement value corresponding to the joystick displacement value It includes parts.
- the signal for controlling the control valve whether the joystick displacement (%) is a noise signal You can judge the cognition accurately.
- the wrong actuator can not be operated unnecessarily, and the work can be performed stably.
- 1 is a view for explaining an example in which two types of control valve is controlled by one joystick.
- 2 and 3 are hydraulic circuits composed of two types of control valve units.
- FIG. 4 is a flowchart illustrating a conventional main control valve control method.
- FIG. 5 is a view for explaining a conventional main control valve control method.
- FIG. 6 is a graph illustrating a valve displacement compared to a joystick displacement according to a conventional main control valve control method.
- FIG. 7 is a graph illustrating the corresponding actuator pressure in comparison with the pump pressure according to the conventional main control valve control method.
- FIG. 8 is a flowchart illustrating a control method and a control apparatus of a main control valve of a construction machine according to exemplary embodiments.
- FIGS. 9 and 10 are diagrams for describing methods of setting a valve operation start limit value for a joystick displacement according to exemplary embodiments.
- FIG. 11 is a graph illustrating a valve displacement according to a joystick displacement according to an exemplary embodiment.
- FIG. 12 is a graph for comparing a pump pressure and a pressure of a corresponding actuator according to an embodiment.
- first and second may be used to describe various components, but the components should not be limited by the terms. The terms may be used for the purpose of distinguishing one component from another component.
- first component may be referred to as the second component, and similarly, the second component may be referred to as the first component.
- FIG. 8 is a flowchart illustrating a control method and a control apparatus of a main control valve of a construction machine according to exemplary embodiments.
- 9 and 10 are diagrams for describing methods of setting a valve operation start limit value for a joystick displacement according to exemplary embodiments.
- the same joystick when the joystick is operated to input a joystick displacement value, the same joystick may be determined by determining whether or not the authenticity of other joystick displacement values that are simultaneously input is determined. Corresponding to prevent interference between the shared control valves.
- the joystick displacement value is input to the input unit of the control device.
- the first joystick signal for controlling the first control valve unit or the second joystick signal for controlling the second control valve unit is received from one joystick.
- the first and second control valve units can be controlled by the operation of the same joystick.
- a true composite signal would be to operate both actuators simultaneously.
- one of the two types of signals may be a noise signal generated unintentionally.
- the first joystick signal and the second joystick signal which can be clearly distinguished can be input.
- the input first joystick signal may have a very large value of the joystick displacement
- the second joystick signal may have a negligibly small joystick displacement.
- the second step is a step of processing in the processing unit, and it is determined whether a joystick signal for controlling the other control valve unit is input when one of the first and second control valve units is in operation. Judging.
- a joystick displacement value (first joystick signal) and a joystick displacement value (second joystick signal) for controlling the control valve may be input in combination.
- the joystick can be manipulated very well so that one kind of signal is strongly input with a large value and the other signal can be input with a very small value as a noise level.
- the second step determines whether the input signal is a composite signal or a single signal.
- the joystick signal for controlling the other control valve unit is input when the control valve unit of any one of the first and second control valve units is in operation in the second step (S220), the joystick A step of adjusting the valve operation start threshold (first limit value) with respect to the displacement to a second valve operation start limit value (second limit value) larger than the first limit value is applied.
- a weight may be applied to the valve operation start limit value (first limit value) for a signal value having a smaller value among the first and second joystick signals.
- the upwardly adjusted valve start limit value may be set by adjusting upwardly to 3% to 15% of the total input displacement of the joystick.
- the second threshold value is less than 3%, since the input signal value is very small, it can be regarded as a joystick malfunction and can be ignored. Only when the second threshold value is greater than 3%, it is determined that the actuator is truly willing to operate. On the other hand, if the second threshold value is greater than 15%, the valve response may be too late. That is, there may be a concern that the offset time may be increased until the actuator actually performs an operation by operating the joystick. Therefore, the second limit value is preferably set to 15% or less.
- the fourth step applies a general threshold value (first limit value) to a signal value having a smaller value among the first and second joystick signals when it is determined to be a single signal in the second step.
- the first threshold may be set to a value of 1% to 5% of the total input displacement of the joystick.
- a true signal value among the first joystick signal and the second joystick signals according to the joystick displacement is calculated as the valve displacement value.
- pilot signals for controlling the two control valve units are generated.
- the joystick displacement value corresponding to the true signal is calculated as the valve displacement value, and the valve displacement value is generated as a pilot signal for controlling the control valve unit.
- the sixth step is performed by the output unit and outputs the pilot signal generated in the fifth step.
- the above-described pilot signal may be a current signal. That is, the current value is provided to the solenoid, and the solenoid moves the spool of the corresponding control valve unit by a value corresponding to the current value.
- the above-described pilot signal may be a pilot oil pressure. That is, the pilot oil is provided to the hydraulic pressure portion of the control valve unit, the spool of the control valve unit is moved by the flow rate corresponding to the pilot oil.
- the valve start limit value (first limit value) is 1% of the maximum displacement value of the joystick. Can be set to 5%.
- the first threshold value is a value used to determine the authenticity of the general joystick displacement (%).
- the other one control valve unit can be newly operated when any one of the two control valve units is operating. have.
- the first threshold value may be increased and set as the new second threshold value.
- the upwardly set second limit value may be set within a range of 3% to 15% of the maximum displacement value of the joystick.
- the first threshold for the other control valve may be changed. If either control valve is on (On), the first limit value for joystick displacement for the other control valve is weighted and set high as the second limit value. In this case, the set second limit value may be tuned according to dynamic characteristics of the corresponding construction machine.
- control valve displacement% may be set to have a predetermined range among the control valve total displacements.
- the minimum value of the control valve displacement (%) may be a% and the maximum value of the control valve displacement (%) may be set to 100%.
- the first limit value for the joystick displacement may be set to b%, and the upwardly adjusted second limit value may be set to c%.
- the maximum value of the second limit value may be 15% of the joystick maximum displacement. If the second limit value is set too large, there is a fear that the response of the control valve unit to the joystick operation becomes insensitive when the joystick is operated. Therefore, the second limit value is preferably limited to 15%.
- the spool of one of the operating control valve units may change the first threshold value for the joystick displacement for controlling the other control valve unit in proportion to the moving distance to the second limit value.
- the proportional ratio can be tuned to reflect the dynamic characteristics of the construction machine.
- control valve displacement% may be set to have a predetermined range among the control valve total displacements.
- the minimum value of the control valve displacement (%) may be set to d%, and the maximum value of the control valve displacement (%) may be set to 100%.
- the minimum value of the second limit value for the joystick displacement may be set to e%, and the maximum value of the second limit value may be set to 100%.
- the minimum value d of the control valve displacement is set to 15% and the minimum value e of the second limit value for the joystick displacement is set to 1% corresponding to the minimum value of the control valve displacement.
- the second limit value for the joystick displacement is controlled to increase from 1% to 100% in proportion thereto.
- control valve displacement (%) when the control valve displacement (%) is 15%, when the joystick displacement (%) reaches 1%, it is judged as a true signal and not a noise signal.
- control valve displacement (%) 50%, when the joystick displacement (%) reaches 3%, it is judged as a true signal and not a noise signal.
- Each threshold of the control valve displacement (%) may be provided as a table by presetting a threshold. That is, when the control valve displacement (%) reaches a specific section, the limit value corresponding to the section is called and set.
- control valve displacement (%) is divided into a plurality of sections (for example, first to fifth sections) between a minimum value and a maximum value, and second limit values are respectively set in correspondence with the sections.
- second limit values are respectively set in correspondence with the sections.
- the limit value corresponding to the second section may be set as the second limit value.
- 11 is a graph illustrating a valve displacement according to a joystick displacement according to an exemplary embodiment.
- 12 is a graph for comparing a pump pressure and a corresponding actuator pressure according to one embodiment.
- only the intended control valve unit can be operated and the unintended actuator is prevented from operating. Furthermore, the fuel economy is improved by preventing the supply of hydraulic oil in an unintended position.
- the wrong actuator can not be operated unnecessarily, and the work can be performed stably.
- control method and control apparatus of the main control valve of the construction machine according to the present invention can be used to prevent the unintended control valve unit from operating when at least two control valve units are controlled by one joystick. .
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Abstract
Description
Claims (11)
- 하나의 조이스틱으로부터 제1 제어밸브 유닛을 제어하기 위한 제1 조이스틱 신호 또는 제2 제어밸브 유닛을 제어하기 위한 제2 조이스틱 신호를 입력받는 신호입력 단계;상기 제1 및 제2 제어밸브 유닛들 중에서 어느 하나의 제어밸브 유닛이 작동 중일 때에 다른 하나의 제어밸브 유닛을 제어하기 위한 조이스틱 신호가 입력되는지 판단하는 판단단계;상기 판단단계에서 상기 제1 및 제2 제어밸브 유닛들 중에서 어느 하나의 제어밸브 유닛이 작동 중일 때에 다른 하나의 제어밸브 유닛을 제어하기 위한 조이스틱 신호가 입력되면, 조이스틱 변위에 대한 밸브 동작개시 한계값(Threshold)에 가중치를 적용하여 상기 밸브 동작개시 한계값을 상향 설정하는 한계값 변경단계; 및상기 입력된 조이스틱 변위값이 상기 상향 설정된 밸브 동작개시 한계값을 충족하면 상기 입력된 조이스틱 변위값에 해당하는 밸브 변위값을 계산하여 출력하는 출력단계를 포함하는 건설기계의 메인컨트롤밸브의 제어 방법.
- 제 1 항에 있어서,상기 제1 제어밸브 유닛은 버킷 제어밸브를 포함하고, 상기 제2 제어밸브 유닛은 붐 제어밸브를 포함하는 것을 특징으로 하는 건설기계의 메인컨트롤밸브의 제어 방법.
- 제 1 항에 있어서,상기 제1 제어밸브 유닛은 암 제어밸브를 포함하고, 상기 제2 제어밸브 유닛은 스윙 제어밸브를 포함하는 것을 특징으로 하는 건설기계의 메인컨트롤밸브의 제어 방법.
- 제 1 항에 있어서,상기 상향된 밸브 동작개시 한계값에 따라 액추에이터 제어 개시 시점이 지연(offset)되는 것을 특징으로 하는 건설기계의 메인컨트롤밸브의 제어 방법.
- 제 1 항에 있어서,상기 상향된 밸브 동작개시 한계값은, 조이스틱 최대 변위의 15% 이하로 설정되는 것을 특징으로 하는 건설기계의 메인컨트롤밸브의 제어 방법.
- 제 1 항에 있어서,상기 상향된 밸브 동작개시 한계값은, 상기 제1 및 제 2 제어밸브 유닛들 중에서 작동 중인 제어밸브 유닛의 제어밸브 변위에 비례하도록 설정되는 것을 특징으로 하는 건설기계의 메인컨트롤밸브의 제어 방법.
- 제 6 항에 있어서,상기 상향된 밸브 동작개시 한계값의 최소값은 상기 제어밸브 변위의 최소값에 대응하고, 상기 상향된 밸브 동작개시 한계값의 최대값은 상기 제어밸브 변위의 최대값에 대응하는 것을 특징으로 하는 건설기계의 메인컨트롤밸브의 제어 방법.
- 하나의 조이스틱으로부터 제1 제어밸브 유닛을 제어하기 위한 제1 조이스틱신호 또는 제2 제어밸브 유닛을 제어하기 위한 제2 조이스틱 신호를 입력받는 입력부;상기 제1 및 제2 제어밸브 유닛들 중에서 어느 하나의 제어밸브 유닛이 작동 중일 때에 다른 하나의 제어밸브 유닛을 제어하기 위한 조이스틱 신호가 입력되면, 조이스틱 변위에 대한 밸브 동작개시 한계값(Threshold)에 가중치를 적용하여 상기 밸브 동작개시 한계값을 상향 설정하는 처리부; 및상기 입력된 조이스틱 변위값이 상기 처리부에서 설정된 밸브 동작개시 한계값을 충족하면 상기 입력된 조이스틱 변위값에 해당하는 밸브 변위값을 계산하여 상기 밸브 변위값을 출력하는 출력부를 포함하는 건설기계의 메인컨트롤밸브의 제어 장치.
- 제 8 항에 있어서,상기 상향된 밸브 동작개시 한계 값은, 조이스틱 최대 변위의 15% 이하로 설정되는 것을 특징으로 하는 건설기계의 메인컨트롤밸브의 제어 장치.
- 제 8 항에 있어서,상기 상향된 밸브 동작개시 한계값은, 상기 제1 및 제2 제어밸브 유닛들 중에서 작동 중인 제어밸브 유닛의 제어밸브 변위에 비례하도록 설정되는 것을 특징으로 하는 건설기계의 메인컨트롤밸브의 제어 방법.
- 제 10 항에 있어서,상기 상향된 밸브 동작개시 한계값의 최소값은 상기 제어밸브 변위의 최소값에 대응하고, 상기 상향된 밸브 동작개시 한계값의 최대값은 상기 제어밸브 변위의 최대값에 대응하는 것을 특징으로 하는 건설기계의 메인컨트롤밸브의 제어 장치.
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| Application Number | Priority Date | Filing Date | Title |
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| US15/108,315 US10385544B2 (en) | 2013-12-26 | 2014-12-24 | Method and device for controlling main control valve of construction machinery |
| CN201480071170.7A CN105899737B (zh) | 2013-12-26 | 2014-12-24 | 工程机械的主控阀的控制方法及控制装置 |
| KR1020167017101A KR101798914B1 (ko) | 2013-12-26 | 2014-12-24 | 건설기계의 메인컨트롤밸브의 제어 방법 및 제어 장치 |
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| PCT/KR2014/012783 Ceased WO2015099440A1 (ko) | 2013-12-26 | 2014-12-24 | 건설기계의 메인컨트롤밸브의 제어 방법 및 제어 장치 |
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| Country | Link |
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| US (1) | US10385544B2 (ko) |
| KR (1) | KR101798914B1 (ko) |
| CN (1) | CN105899737B (ko) |
| WO (1) | WO2015099440A1 (ko) |
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| KR102582826B1 (ko) | 2016-09-12 | 2023-09-26 | 에이치디현대인프라코어 주식회사 | 건설기계의 제어 시스템 및 건설기계의 제어 방법 |
| CN117062958A (zh) * | 2021-03-31 | 2023-11-14 | 住友建机株式会社 | 施工机械及施工机械用操作装置 |
| EP4317606A4 (en) * | 2021-03-31 | 2024-10-16 | Sumitomo Construction Machinery Co., Ltd. | Work machine and operation device for work machine |
| CN113521769B (zh) * | 2021-07-09 | 2022-12-13 | 深圳市好盈科技股份有限公司 | 电子调速器内部参数设定方法及系统 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105899737A (zh) | 2016-08-24 |
| US20170121943A1 (en) | 2017-05-04 |
| US10385544B2 (en) | 2019-08-20 |
| KR101798914B1 (ko) | 2017-11-17 |
| KR20160091964A (ko) | 2016-08-03 |
| CN105899737B (zh) | 2018-06-01 |
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