WO2021070971A1 - 制御システムおよびクレーン - Google Patents
制御システムおよびクレーン Download PDFInfo
- Publication number
- WO2021070971A1 WO2021070971A1 PCT/JP2020/038521 JP2020038521W WO2021070971A1 WO 2021070971 A1 WO2021070971 A1 WO 2021070971A1 JP 2020038521 W JP2020038521 W JP 2020038521W WO 2021070971 A1 WO2021070971 A1 WO 2021070971A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- target
- signal
- control system
- luggage
- crane
- Prior art date
Links
- 230000008602 contraction Effects 0.000 claims description 21
- 238000004364 calculation method Methods 0.000 description 53
- 230000006870 function Effects 0.000 description 11
- 230000001133 acceleration Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000013178 mathematical model Methods 0.000 description 2
- 238000013528 artificial neural network Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/0265—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion
- G05B13/027—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion using neural networks only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
- B66C13/063—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/46—Position indicators for suspended loads or for crane elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/48—Automatic control of crane drives for producing a single or repeated working cycle; Programme control
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/0265—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
Definitions
- the present invention relates to a control system and a crane.
- Patent Document 2 The crane described in Patent Document 2 is controlled to improve the positioning accuracy of the crane and minimize the runout of the load based on a predetermined mathematical model of the crane. Therefore, when the error of the mathematical model is large, the error of the future predicted value is also large, the positioning accuracy of the crane is lowered, and the runout of the load is increased, which is disadvantageous.
- An object of the present invention is to provide a crane control system and a crane capable of moving a load in a manner in accordance with the intention of the operator while suppressing the shaking of the load when controlling the actuator with reference to the load. Is.
- a control system that controls the actuators of a crane.
- a signal processing unit that generates a signal related to the target operating amount of the actuator,
- a feedback control unit that controls the actuator based on the difference between the signal related to the target working amount and the signal related to the feeding amount of the actuator that has been fed back. It is equipped with a feedforward control unit that controls the actuator based on a signal related to the target operating amount in cooperation with the feedback control unit and learns the characteristics of the actuator by adjusting the weighting coefficient based on the teacher signal.
- the signal processing unit removes the pulse-like component from the input signal and converts the input signal into a signal relating to the target working amount.
- One aspect of the crane according to the present invention includes the above-mentioned control system.
- the signal related to the target working amount which is an input signal to the feedforward control unit, does not include a pulse-like component. Therefore, it is possible to stabilize the learning performed in the feedforward control unit.
- FIG. 1 is a side view showing the overall configuration of the crane.
- FIG. 2 is a block diagram showing a control configuration of the crane.
- FIG. 3 is a block diagram showing a control configuration of the control device according to the present embodiment.
- FIG. 4 is a diagram showing a reverse dynamics model of a crane.
- FIG. 5 is a block diagram showing a control configuration of the control system according to the present embodiment.
- FIG. 6 is a diagram showing a flowchart showing a crane control process.
- FIG. 7 is a diagram showing a flowchart showing a target trajectory calculation process.
- FIG. 8 is a diagram showing a flowchart showing a boom position calculation process.
- a crane 1 which is a mobile crane (rough terrain crane) as a work vehicle according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
- the crane 1 (rough terrain crane) will be described as the work vehicle, but the work vehicle may be an all-terrain crane, a truck crane, a loaded truck crane, or the like. It can also be applied to a work device for suspending luggage with a wire rope.
- (n), (n + 1), (n + 2) is the nth, n + 1th, and n + 2nd information (for example, the amount of wire rope feeding) acquired every unit time t.
- “(n + 1)” means the information acquired after the lapse of (n + 1) ⁇ t time from the start of information acquisition.
- (n + 2) means the information acquired after the lapse of (n + 2) ⁇ t time from the start of information acquisition.
- the crane 1 is a mobile crane that can move to an unspecified place.
- the crane 1 has a load moving operation tool 32 (see FIG. 2) capable of operating the vehicle 2, the crane device 6 which is a work device, and the crane device 6 based on the load W reference.
- the vehicle 2 is a traveling body that conveys the crane device 6.
- the vehicle 2 has a plurality of wheels 3.
- the vehicle 2 runs on the engine 4 as a power source.
- the vehicle 2 is provided with an outrigger 5.
- the outrigger 5 is composed of an overhang beam that can be stretched on both sides of the vehicle 2 in the width direction by flood control and a hydraulic jack cylinder that can be stretched in a direction perpendicular to the ground.
- the vehicle 2 can expand the workable range of the crane 1 by extending the outrigger 5 in the width direction of the vehicle 2 and grounding the jack cylinder.
- the crane device 6 is a work device for lifting the luggage W with a wire rope.
- the crane device 6 includes a swivel 7, boom 9, jib 9a, main hook block 10, sub hook block 11, undulating hydraulic cylinder 12, main winch 13, main wire rope 14, sub winch 15, sub wire rope 16, and It is equipped with a cabin 17 and the like.
- the swivel base 7 is a drive device that makes the crane device 6 swivelable.
- the swivel base 7 is provided on the frame of the vehicle 2 via an annular bearing.
- the swivel base 7 is rotatably configured with the center of the annular bearing as the center of rotation.
- the swivel base 7 is provided with a hydraulic swivel hydraulic motor 8 which is an actuator.
- the swivel base 7 is configured to be swivelable in one direction and the other direction by a swivel hydraulic motor 8.
- the swivel camera 7b which is a luggage position detection unit, is a monitoring device that photographs obstacles, people, etc. around the swivel 7.
- the swivel camera 7b is provided on the left and right sides in front of the swivel 7 and on the left and right sides behind the swivel 7.
- Each swivel camera 7b covers the entire circumference of the swivel 7 as a monitoring range by photographing the periphery of each installation location.
- the swivel camera 7b arranged on the left and right sides in front of the swivel 7 is configured to be usable as a set of stereo cameras.
- the swivel camera 7b in front of the swivel 7 can be configured as a luggage position detection unit that detects the position information of the suspended luggage W by using it as a set of stereo cameras.
- the luggage position detection unit (swivel camera 7b) may be configured by a boom camera 9b, which will be described later.
- the luggage position detection unit may be any one capable of detecting the position information of the luggage W such as a millimeter wave radar, an acceleration sensor, and a GNSS.
- the swivel hydraulic motor 8 is an actuator that is rotationally operated by a swivel valve 23 (see FIG. 2), which is an electromagnetic proportional switching valve.
- the swivel valve 23 can control the flow rate of the hydraulic oil supplied to the swivel hydraulic motor 8 to an arbitrary flow rate. That is, the swivel base 7 is configured to be controllable to an arbitrary swivel speed via the swivel hydraulic motor 8 that is rotationally operated by the swivel valve 23.
- the swivel table 7 is provided with a swivel sensor 27 (see FIG. 2) which is a swivel angle detection unit that detects the swivel angle ⁇ z (see FIG. 4) and the swivel speed of the swivel table 7.
- the boom 9 is a movable strut that supports the wire rope so that the luggage W can be lifted.
- the boom 9 is composed of a plurality of boom members.
- the boom 9 is provided so that the base end of the base boom member can swing at substantially the center of the swivel base 7.
- the boom 9 is configured to be able to expand and contract in the axial direction by moving each boom member by an expansion / contraction hydraulic cylinder 51 which is an actuator.
- a jib 9a is provided at the tip of the boom 9.
- the boom 9 and jib 9a correspond to an example of the arm portion.
- the arm portion may be, for example, only the boom 9 of the boom 9 and the jib 9a. Further, the arm portion may include a boom 9 and a jib 9a supported by a tip portion of the boom 9.
- the tip of the arm means the tip of the boom if the mobile crane has only a boom.
- the tip of the arm means the tip of the jib 9a.
- the expansion / contraction hydraulic cylinder 51 is an actuator that is expanded / contracted by the expansion / contraction valve 24 (see FIG. 2), which is an electromagnetic proportional switching valve.
- the expansion / contraction valve 24 can control the flow rate of the hydraulic oil supplied to the expansion / contraction hydraulic cylinder 51 to an arbitrary flow rate.
- the boom 9 is provided with an expansion / contraction sensor 28 which is an expansion / contraction length detecting unit for detecting the length of the boom 9, and an orientation sensor 29 for detecting an orientation centered on the tip of the boom 9.
- the boom camera 9b (see FIG. 2) is a detection device that photographs the luggage W and the features around the luggage W.
- the boom camera 9b is provided at the tip of the boom 9.
- the boom camera 9b is configured to be able to photograph features and terrain around the luggage W and the crane 1 from vertically above the luggage W.
- the main hook block 10 and the sub hook block 11 are hanging tools for hanging the luggage W.
- the main hook block 10 is provided with a plurality of hook sheaves around which the main wire rope 14 is wound and a main hook 10a for suspending the luggage W.
- the sub-hook block 11 is provided with a sub-hook 11a for suspending the luggage W.
- the undulating hydraulic cylinder 12 is an actuator that raises and lays down the boom 9 and holds the posture of the boom 9.
- the end of the cylinder portion is swingably connected to the swivel base 7, and the end of the rod portion is swingably connected to the base boom member of the boom 9.
- the undulating hydraulic cylinder 12 is expanded and contracted by the undulating valve 25 (see FIG. 2), which is an electromagnetic proportional switching valve.
- the undulation valve 25 can control the flow rate of the hydraulic oil supplied to the undulation hydraulic cylinder 12 to an arbitrary flow rate.
- the boom 9 is provided with an undulation sensor 30 (see FIG. 2), which is an undulation angle detecting unit that detects the undulation angle ⁇ x (see FIG. 4).
- the main winch 13 and the sub winch 15 are winding devices that carry out (wind up) and unwind (roll down) the main wire rope 14 and the sub wire rope 16.
- the main winch 13 is rotated by a main hydraulic motor 52 in which the main drum around which the main wire rope 14 is wound is an actuator
- the sub winch 15 is rotated by a sub hydraulic motor 53 in which the sub drum around which the sub wire rope 16 is wound is an actuator. It is configured to be rotated.
- the main hydraulic motor 52 is rotationally operated by the main valve 26 m (see FIG. 2), which is an electromagnetic proportional switching valve.
- the main winch 13 is configured to control the main hydraulic motor 52 by a main valve 26 m so that it can be operated at an arbitrary feeding and feeding speed.
- the sub winch 15 is configured to control the sub hydraulic motor 53 by the sub valve 26s (see FIG. 2), which is an electromagnetic proportional switching valve, so that the sub winch 15 can be operated at an arbitrary feeding and feeding speed.
- the main winch 13 and the sub winch 15 are provided with a winding sensor 33 (see FIG. 2) for detecting the feeding amount l (n) of the main wire rope 14 and the sub wire rope 16, respectively.
- Cabin 17 is a cockpit covered with a housing.
- the cabin 17 is mounted on the swivel base 7.
- a cockpit (not shown) is provided.
- an operation tool for operating the vehicle 2 and a turning operation tool 18 for operating the crane device 6, an undulation operation tool 19, a telescopic operation tool 20, a main drum operation tool 21m, a sub-drum operation tool 21s, etc. Is provided (see FIG. 2).
- the swivel operating tool 18 can operate the swivel hydraulic motor 8.
- the undulation operation tool 19 can operate the undulation hydraulic cylinder 12.
- the expansion / contraction operating tool 20 can operate the expansion / contraction hydraulic cylinder 51.
- the main drum operating tool 21m can operate the main hydraulic motor.
- the sub-drum operating tool 21s can operate the sub-hydraulic motor 53.
- the cabin 17 is provided with a luggage movement operation tool 32 which is a luggage movement operation unit for inputting a movement direction and a movement speed of the luggage W.
- the luggage movement operating tool 32 is an operating tool for inputting instructions regarding the moving direction and speed of the luggage W on a horizontal surface.
- the luggage movement operating tool 32 is composed of an operating lever and a sensor (not shown) that detects the tilting direction and tilting amount of the operating lever.
- the luggage movement operating tool 32 is configured so that the operating lever can be tilted in any direction.
- the luggage moving operation tool 32 relates to the tilt direction of the operation stick and the tilt amount thereof detected by a sensor (not shown) as the extension direction of the boom 9 from the seating direction of the driver's seat to the front direction (hereinafter, simply referred to as “forward direction”).
- the operation signal is configured to be transmitted to the control device 31 (see FIG. 2).
- the luggage movement operating tool 32 may be configured to be provided in the remote control terminal.
- the control device 31 is a control device 31 that controls the actuator of the crane device 6 via each operation valve.
- the control device 31 is provided in the cabin 17.
- the control device 31 may actually have a configuration in which a CPU, ROM, RAM, HDD, etc. are connected by a bus, or may have a configuration including a one-chip LSI or the like.
- the control device 31 stores various programs and data for controlling the operation of each actuator, switching valve, sensor, and the like.
- the control device 31 is connected to the swivel camera 7b, the boom camera 9b, the swivel operation tool 18, the undulation operation tool 19, the telescopic operation tool 20, the main drum operation tool 21m, and the sub-drum operation tool 21s, and the image from the swivel camera 7b.
- the image from the boom camera 9b can be acquired, and the operation amounts of the turning operation tool 18, the undulation operation tool 19, the main drum operation tool 21m, and the sub-drum operation tool 21s can be acquired.
- the control device 31 is connected to the swivel valve 23, the telescopic valve 24, the undulation valve 25, the main valve 26m and the sub valve 26s, and the swivel valve 23, the undulation valve 25, the main valve 26m and the sub valve 26s are connected to each valve.
- the target operation signal Md (see FIG. 4), which is the target operation amount, can be transmitted.
- the control device 31 is connected to the swivel sensor 27, the telescopic sensor 28, the orientation sensor 29, the undulation sensor 30, and the winding sensor 33, and has a swivel angle ⁇ z, a telescopic length Lb, and an undulation angle ⁇ x.
- the feeding amount l (n) and the orientation of the main wire rope 14 or the sub wire rope 16 can be obtained.
- the control device 31 generates a target operation signal Md corresponding to each operation tool based on the operation amounts of the turning operation tool 18, the undulation operation tool 19, the main drum operation tool 21m, and the sub drum operation tool 21s.
- the crane 1 configured in this way can move the crane device 6 to an arbitrary position by traveling the vehicle 2. Further, in the crane 1, the boom 9 is erected at an arbitrary undulation angle ⁇ x by the undulating hydraulic cylinder 12 by the operation of the undulating operation tool 19, and the boom 9 is extended to an arbitrary boom 9 length by the operation of the expansion / contraction operation tool 20.
- the lift and working radius of the crane device 6 can be expanded by making the crane device 6 work. Further, the crane 1 can convey the luggage W by lifting the luggage W by the sub-drum operating tool 21s or the like and turning the swivel base 7 by operating the swivel operating tool 18.
- the control device 31 calculates the target trajectory signal Pd ⁇ of the luggage W based on the orientation of the tip of the boom 9 acquired by the orientation sensor 29. Further, the control device 31 calculates the target position coordinate p (n + 1) of the luggage W, which is the target position of the luggage W, from the target trajectory signal Pd ⁇ . The control device 31 generates a target operation signal Md for the turning valve 23, the expansion / contraction valve 24, the undulating valve 25, the main valve 26m, and the sub valve 26s that move the luggage W to the target position coordinate p (n + 1) (FIG. 4). reference).
- the crane 1 moves the luggage W in the tilting direction of the luggage moving operation tool 32 at a speed corresponding to the tilting amount. At this time, the crane 1 controls the swivel hydraulic motor 8, the telescopic hydraulic cylinder 51, the undulating hydraulic cylinder 12, the main hydraulic motor 52, and the like by the target operation signal Md.
- the crane 1 includes a moving direction corresponding to the operating direction of the luggage moving operating tool 32 and a moving speed corresponding to the operating amount (tilting amount) with reference to the extending direction of the boom 9. Since the target movement speed signal Vd, which is the control signal of the target movement speed of W, is calculated for each unit time t and the target position coordinate p (n + 1) of the luggage W is determined, the operator operates the luggage movement operation tool 32. The recognition of the operating direction of the crane device 6 with respect to the crane device 6 is not lost.
- the operation direction of the luggage movement operating tool 32 and the movement direction of the luggage W are calculated based on the extension direction of the boom 9, which is a common reference.
- the crane device 6 can be easily and easily operated.
- the luggage movement operating tool 32 is provided inside the cabin 17, but it may be provided in a remote control terminal that can be remotely controlled from the outside of the cabin 17 by providing a terminal-side radio.
- the control device 31 has a target trajectory calculation unit 31a, a boom position calculation unit 31b, and an operation signal generation unit 31c. Further, the control device 31 uses a set of swivel camera 7b on the left and right sides in front of the swivel 7 as a stereo camera, and is configured to be able to acquire the current position information of the luggage W as a luggage position detection unit ( (See Fig. 2).
- the target trajectory calculation unit 31a is a part of the control device 31 and converts the target moving speed signal Vd of the luggage W into the target trajectory signal Pd ⁇ of the luggage W.
- the target trajectory calculation unit 31a can acquire the target trajectory signal Pd ⁇ of the luggage W, which is composed of the moving direction and the speed of the luggage W, from the luggage moving operation tool 32 every unit time t.
- the target trajectory calculation unit 31a can integrate the acquired target movement speed signal Vd to calculate the target trajectory signal Pd ⁇ in the x-axis direction, y-axis direction, and z-axis direction of the luggage W for each unit time t. ..
- the subscript ⁇ is a code representing any of the x-axis direction, the y-axis direction, and the z-axis direction.
- the boom position calculation unit 31b is a part of the control device 31, and calculates the position coordinates of the tip of the boom 9 from the attitude information of the boom 9 and the target trajectory signal Pd ⁇ of the luggage W.
- the boom position calculation unit 31b can acquire the target trajectory signal Pd ⁇ from the target trajectory calculation unit 31a.
- the boom position calculation unit 31b acquires the turning angle ⁇ z (n) of the turning table 7 from the turning sensor 27.
- the boom position calculation unit 31b acquires the expansion / contraction length lb (n) from the expansion / contraction sensor 28.
- the boom position calculation unit 31b acquires the undulation angle ⁇ x (n) from the undulation sensor 30.
- the boom position calculation unit 31b acquires the feeding amount l (n) of the main wire rope 14 or the sub wire rope 16 (hereinafter, simply referred to as “wire rope”) from the winding sensor 33.
- the boom position calculation unit 31b acquires the current position information of the luggage W from the images of the luggage W taken by a set of the swivel camera 7b arranged on the left and right sides in front of the swivel 7 (see FIG. 2). ..
- the boom position calculation unit 31b calculates the current position coordinates p (n) of the baggage W from the acquired current position information of the baggage W.
- the boom position calculation unit 31b is the tip of the boom 9 (the feeding position of the wire rope), which is the current position of the tip of the boom 9 from the acquired turning angle ⁇ z (n), expansion / contraction length lb (n), and undulation angle ⁇ x (n). ) Is calculated (hereinafter, simply referred to as “current position coordinate q (n) of boom 9”).
- the boom position calculation unit 31b calculates the wire rope feeding amount l (n) from the current position coordinates p (n) of the luggage W and the current position coordinates q (n) of the boom 9. Further, the boom position calculation unit 31b calculates the target position coordinate p (n + 1) of the luggage W, which is the position of the luggage W after the lapse of the unit time t, from the target trajectory signal Pd ⁇ .
- the boom position calculation unit 31b obtains the direction vector e (n + 1) of the wire rope from which the luggage W is suspended from the current position coordinate p (n) of the luggage W and the target position coordinate p (n + 1) of the luggage W. calculate.
- the boom position calculation unit 31b uses the inverse dynamics model at the position of the tip of the boom 9 after a unit time t elapses from the target position coordinates p (n + 1) of the luggage W and the direction vector e (n + 1) of the wire rope.
- the target position coordinate q (n + 1) of a certain boom 9 is calculated.
- the operation signal generation unit 31c is a part of the control device 31 and generates the target operation signal Md and the like of each actuator from the target position coordinates q (n + 1) of the boom 9 after the lapse of the unit time t.
- the operation signal generation unit 31c acquires the target position coordinates q (n + 1) of the boom 9 after the lapse of the unit time t from the boom position calculation unit 31b.
- the operation signal generation unit 31c is a swivel valve 23, a telescopic valve 24, an undulation valve 25, a main valve 26 m or a sub valve from the current position coordinate q (n) of the boom 9 and the target position coordinate p (n + 1) of the luggage W.
- the target operation signal Md of 26s, the feedback operation signal Md1 and the feed forward operation signal Md2 described later are generated.
- the control device 31 defines a reverse dynamics model of the crane 1 for calculating the target position coordinates q (n + 1) at the tip of the boom 9.
- the inverse dynamics model is defined in the XYZ coordinate system, with the origin O as the turning center of the crane 1.
- the control device 31 defines q, p, lb, ⁇ x, ⁇ z, l, f and e in the inverse dynamics model, respectively.
- Q indicates, for example, the current position coordinate q (n) of the tip of the boom 9, and p indicates, for example, the current position coordinate p (n) of the luggage W.
- lb indicates, for example, the expansion / contraction length lb (n) of the boom 9.
- ⁇ x indicates, for example, the undulation angle ⁇ x (n).
- ⁇ z indicates, for example, a turning angle ⁇ z (n).
- l indicates, for example, the wire rope feeding amount l (n).
- f indicates the tension f of the wire rope.
- e represents, for example, the direction vector e (n) of the wire rope.
- the relationship between the target position q at the tip of the boom 9 and the target position p of the luggage W is derived from the target position p of the luggage W, the mass m of the luggage W, and the spring constant kf of the wire rope. It is expressed by the equation (2). Further, the target position q at the tip of the boom 9 is calculated by the equation (3) which is a function of the time of the luggage W.
- f Tension of wire rope
- kf Spring constant
- m Mass of luggage W
- q Current position or target position of the tip of boom 9
- p Current position or target position of luggage W
- l Delivery amount of wire rope
- E Direction vector
- g Gravity acceleration
- the wire rope feeding amount l (n) is calculated from the following formula (4).
- the wire rope feeding amount l (n) is defined by the distance between the current position coordinate q (n) of the boom 9 which is the tip position of the boom 9 and the current position coordinate p (n) of the luggage W which is the position of the luggage W. The rope.
- the wire rope direction vector e (n) is calculated from the following equation (5).
- the wire rope direction vector e (n) is a vector of the unit length of the wire rope tension f (see equation (2)).
- the wire rope tension f is calculated by subtracting the gravitational acceleration from the acceleration of the luggage W calculated from the current position coordinate p (n) of the luggage W and the target position coordinate p (n + 1) of the luggage W after the lapse of the unit time t. Will be done.
- ⁇ indicates the turning angle ⁇ z (n) of the boom 9.
- the target position coordinate q (n + 1) of the boom 9 is calculated from the wire rope feeding amount l (n), the target position coordinate p (n + 1) of the luggage W, and the direction vector e (n + 1) using inverse dynamics. ..
- the crane 1 includes a luggage movement operating tool 32, a swivel sensor 27, an undulation sensor 30, a telescopic sensor 28, a swivel camera 7b, a target value filter 35, a target operating amount calculation unit 36, and the like.
- the feedback control unit 37 and the feedforward control unit 39 are included.
- the feedback control unit 37 and the feedforward control unit 39 are formed by the cooperation of the target trajectory calculation unit 31a, the boom position calculation unit 31b, and the operation signal generation unit 31c of the control device 31. And constitutes.
- the control system 34 is a control system that controls the actuator of the crane, and is a signal processing unit (target value filter 35 and target) that generates a signal regarding the target operating amount of the actuator.
- the actuator is controlled based on the signal related to the target operation amount (target operation signal Md) in cooperation with the feedback control unit 37, and the weight coefficient is calculated based on the teacher signal (difference between the target operation signal Md and the actual operation signal Mdr).
- It includes a feedback control unit 39 that learns the characteristics of the actuator by adjusting. Then, in the case of the control system 34, the signal processing unit (target value filter 35 and target operating amount calculation unit 36) removes the pulse-like component from the input signal (target movement position signal Pd) and inputs the input signal (target movement position signal). Pd) is converted into a signal related to the target operating amount (target operating signal Md).
- the signal processing unit target value filter 35 and target operating amount calculation unit 36
- the target value filter 35 calculates the target trajectory signal Pd ⁇ of the luggage W from the target movement position signal Pd which is a control signal of the target movement position of the luggage W.
- the target value filter 35 corresponds to an example of the signal processing unit and the first processing unit, and attenuates frequencies of a predetermined frequency or higher.
- the target movement position signal Pd of the luggage W obtained by converting the target movement speed signal Vd of the luggage movement operation tool 32 by the integrator 32a is input to the target value filter 35.
- the integrator 32a corresponds to an example of the front processing unit.
- the target movement position signal Pd of the luggage W corresponds to an example of an input signal input to the signal processing unit.
- the target movement position signal Pd is, for example, a pulse-shaped (step-shaped) signal.
- the target moving position signal Pd is converted into a target orbit signal Pd ⁇ from which the pulse-like component has been removed by applying the target value filter 35.
- the target movement position signal Pd becomes a pulse-like (step-like) time change of the target orbit (in other words, the velocity in each axial direction of the position coordinates) by applying the target value filter 35. It is converted into a target orbit signal Pd ⁇ in which such a sudden change is suppressed.
- the target value filter 35 is a low-pass filter composed of the transfer function G (s) of the equation (1).
- the transfer function G (s) is expressed in a form obtained by partial fraction decomposition with T1, T2, T3, T4, C1, C2, C3, and C4 as coefficients and s as a differential element.
- the transfer function G (s) of the equation (1) is set for each of the x-axis, y-axis, and z-axis. In this way, the transfer function G (s) can be expressed as a superposition of the transfer functions of the first-order lag.
- the target value filter 35 converts the target movement position signal Pd into the target orbit signal Pd ⁇ by multiplying the target movement position signal Pd of the luggage W by the transfer function G (s).
- the target working amount calculation unit 36 corresponds to an example of the signal processing unit and the second processing unit, and uses the inverse dynamics model to provide the attitude information of the crane 1, the current position information of the luggage W, and the target trajectory signal Pd ⁇ of the luggage W.
- the target operation signal Md of each actuator is generated from.
- the target working amount calculation unit 36 has a reverse dynamics model.
- the target working amount calculation unit 36 is joined in series with the target value filter 35.
- the target working amount calculation unit 36 uses the target trajectory signal Pd ⁇ calculated by the target value filter 35, the current position coordinates p (n) of the luggage W calculated from the current position information of the luggage W acquired from the swivel camera 7b, and each sensor. After the unit time t elapses using the inverse kinetic model from the acquired attitude information of the crane 1 (turning angle ⁇ z (n), expansion / contraction length lb (n), undulation angle ⁇ x (n), feeding amount l (n)). The target position coordinates q (n + 1) of the boom 9 of the above are calculated.
- the target operating amount calculation unit 36 generates a target operating signal Md representing the target operating amount of each actuator from the target position coordinates q (n + 1) calculated in the inverse dynamics model.
- the target operation signal Md corresponds to an example of a signal relating to the target operation amount.
- the feedback control unit 37 is a feedback control unit 37, which is a feedback operation amount of each actuator corrected for the target operation signal Md based on the difference between the target operation signal Md and the actual operation signal Mdr representing the actual operation amount of each actuator with respect to the target operation signal Md.
- the operation signal Md1 is generated.
- the actual operation signal Mdr corresponds to an example of a signal relating to the operation amount of the actuator.
- the feedback control unit 37 has a feedback controller 38 that corrects the target operation signal Md.
- the feedback controller 38 is connected in series to the target working amount calculation unit 36.
- the feedback control unit 37 can acquire the actual operation signal Mdr from each sensor of the crane 1.
- the feedback control unit 37 is configured to feed back the actual operation signal Mdr to the target operation signal Md.
- the feedback control unit 37 acquires the target operation signal Md of the luggage W from the target operation amount calculation unit 36. Further, the feedback control unit 37 acquires the actual operation signal Mdr from each sensor of the crane 1. The feedback control unit 37 feeds back (negative feedback) the acquired actual operation signal Md to the acquired target operation signal Md.
- the feedback control unit 37 corrects the target operation signal Md by the feedback controller 38 based on the difference of the actual operation signal Md with respect to the target operation signal Md, and calculates the feedback operation signal Md1.
- Such a feedback control unit 37 is based on the turning angle of the boom 9 (arm portion) of the crane 1, the undulation angle of the boom 9 (arm portion), and the expansion / contraction length of the boom 9 (arm portion). ) Calculate the current position of the tip. Further, the feedback control unit 37 calculates the amount of wire rope feeding from the current position of the load and the current position of the tip of the boom 9 (arm portion) based on the difference between the current position of the load and the target position of the load. Further, the feedback control unit 37 calculates the direction vector of the wire rope from the current position of the load and the target position of the load.
- the feedback control unit 37 calculates the target position of the tip of the boom 9 (arm portion) at the target position of the load from the feeding amount of the wire rope and the direction vector of the wire rope. Then, the feedback control unit 37 generates a feedback control signal based on the target position of the tip of the boom 9 (arm unit). Specifically, the feedback control unit 37 calculates a target speed signal of each actuator based on a change in the target position of the tip of the boom 9 (arm unit) and the amount of extension of the wow rope for each time, and targets the target. Generate a feedback control signal to correct the speed signal so that the actual response of the actuator of the crane matches.
- the feedforward control unit 39 is provided in parallel with the feedback control unit 37. Using the learning type reverse dynamics model 40, the feedforward control unit 39 uses the learning type reverse dynamics model 40 to feedforward the feedforward operation amount of each actuator from the attitude information of the crane 1, the current position information of the luggage W, and the target operation signal Md of the luggage W. The operation signal Md2 is generated.
- the feedforward control unit 39 has, for example, a learning type inverse dynamics model 40 in which a plurality of characteristics of the crane 1 are represented by n subsystems.
- the learning type inverse dynamics model 40 is connected in parallel to the target working amount calculation unit 36.
- a plurality of first subsystems SM1, second subsystem SM2, third subsystem SM3 ... nth subsystem SMN are connected in parallel.
- Subsystems SM1 to SMN correspond to an example of the subsystem group.
- one subsystem group corresponds to one actuator (for example, a turning hydraulic motor 8) of the crane 1.
- the feedforward control unit 39 has a number of subsystem groups corresponding to the number of actuators of the crane 1 to be controlled.
- each subsystem of the learning type inverse dynamics model 40 is connected in parallel with the feedback controller 38.
- the learning-type inverse dynamics model 40 has a weighting coefficient w1 for the first subsystem SM1, a weighting coefficient w2 for the second subsystem SM2, a weighting coefficient w3 for the third subsystem SM3, and a weighting coefficient for the nth subsystem SMn. wn is assigned.
- the feedforward control unit 39 adjusts the weighting coefficients w1, w2, w3 ... And wn of each model based on the signal (teacher signal) relating to the difference between the actual operation signal Md and the target operation signal Md.
- the feedforward control unit 39 is configured to be able to acquire the learning type inverse dynamics model 40 having the characteristics of the crane 1 by adjusting the weighting coefficient of the learning type inverse dynamics model 40.
- the feedforward control unit 39 acquires the target operation signal Md. Further, the feedforward control unit 39 acquires the difference between the actual operation signal Md and the target operation signal Md from the feedback control unit 37 as a teacher signal. The feedforward control unit 39 adjusts the weighting coefficients w1, w2, w3 ... And w ⁇ n of each model based on the difference of the actual operation signal Mdr with respect to the target operation signal Md.
- the feedforward control unit 39 adjusts the weighting coefficient of one layer of the learning type inverse dynamics model 40 based on the difference between the target operating amount and the actual operating amount, so that the characteristics of each subsystem are the characteristics of the crane 1. Adapts to real characteristics.
- the feedforward control unit 39 includes the target operation signal Md, the current position coordinates p (n) of the luggage W calculated from the current position information of the luggage W acquired from the swivel camera 7b, and the attitude information of the crane 1 acquired from each sensor ( From the turning angle ⁇ z (n), the expansion / contraction length lb (n), the undulation angle ⁇ x (n), and the feeding amount l (n), the target of the boom 9 after the lapse of a unit time t using the learning type inverse dynamics model 40.
- the position coordinate q (n + 1) is calculated.
- the feedforward control unit 39 generates a feedforward operation signal Md2 for each actuator from the calculated target position coordinates q (n + 1).
- the feedforward control unit 39 adds the generated feedforward operation signal Md2 to the feedback operation signal Md1.
- the control system 34 of the crane 1 transmits the feedback operation signal Md1 calculated by the feedback control unit 37 and the feedforward operation signal Md2 calculated by the feedforward control unit 39 to each actuator of the crane 1. That is, the control system 34 controls the actuator to be controlled based on the feedback operation signal Md1 and the feedforward operation signal Md2.
- the control system 34 After transmitting the feedback operation signal Md1 and the feed forward operation signal Md2 to each actuator, the control system 34 subtracts the actual operation signal Mdr detected by each sensor of the crane 1 into the target operation signal Md by the feedback control unit 37. The control system 34 adjusts the weighting coefficient of the learning type inverse dynamics model 40 based on the difference of the actual operation signal Mdr with respect to the target operation signal Md.
- the control ratio by the feedback operation signal Md1 calculated by the feedback control unit 37 decreases, and the feedforward operation signal The control ratio by Md2 increases.
- step S100 the control system 34 starts the target trajectory calculation step A and shifts the step to step S101 (see FIG. 7). Then, when the target trajectory calculation step A is completed, the step is shifted to step S200 (see FIG. 6).
- step S200 the control system 34 starts the boom position calculation step B and shifts the step to step S201 (see FIG. 8). Then, when the boom position calculation step B is completed, the step is shifted to step S110 (see FIG. 6).
- step S110 the control system 34 calculates the target operation signal Md from the calculated target position coordinates q (n + 1), and shifts the step to step S120.
- step S120 the control system 34 acquires the actual operation signal Mdr from each sensor of the crane 1 and shifts the step to step S130.
- step S130 the control system 34 calculates the difference between the target operation signal Md and the actual operation signal Mdr, and shifts the step to step S140.
- step S140 the control system 34 generates a feedback operation signal Md1 in which the target operation signal Md is corrected based on the difference between the target operation signal Md and the actual operation signal Md by the feedback controller 38, and the step proceeds to step S150. Let me.
- step S131 the control system 34 adjusts the weighting coefficients w1, w2, w3, ... Wn of the learning type inverse dynamics model 40 from the difference between the target operation signal Md and the actual operation signal Mdr, and steps S300. Migrate to.
- step S300 the control system 34 starts the boom position calculation step B and shifts the step to step S301 (see FIG. 8). Then, when the boom position calculation step B is completed, the step is shifted to step S132 (see FIG. 6).
- step S132 the control system 34 generates a feedforward operation signal Md2 from the target position coordinates q (n + 1), and shifts the step to step S150.
- step S150 the control system 34 adds the feedback operation signal Md1 and the feedforward operation signal Md2, and shifts the step to step S160.
- step S160 the control system 34 transmits a signal obtained by adding the feedback operation signal Md1 and the feedforward operation signal Md2 to each actuator of the crane 1 to shift the step to step S100.
- the control system 34 determines whether or not the target movement speed signal Vd has acquired the target movement position signal Pd converted by the integrator 32a.
- the target moving speed signal Vd is a signal generated based on the lever operation of the operator, and is a signal for instructing the moving direction and the moving speed of the luggage. That is, the target moving speed signal Vd is not a signal indicating the position of the crane 1 (luggage). Therefore, in the case of the present embodiment, the target moving speed signal Vd is integrated by the integrator 32a and converted into the target moving position signal Pd.
- the target movement position signal Pd is a pulse-shaped (step-shaped) signal.
- step S101 When the target movement position signal Pd is acquired in step S101 (“YES” in step S101), the control system 34 shifts the step to step S102. On the other hand, when the target movement position signal Pd has not been acquired (“NO” in step S101), the control system 34 shifts the step to step S101.
- step S102 the control system 34 detects the luggage W with the boom camera 9b, calculates the current position coordinate p (n) of the luggage W, and shifts the step to step S103.
- step S103 the control system 34 calculates the target trajectory signal Pd ⁇ from the acquired target movement position signal Pd and the transfer function G (s) which is the target value filter 35, ends the target trajectory calculation step A, and steps.
- the target orbit signal Pd ⁇ may be regarded as position information that complements the target movement position signal Pd, which is discrete position information, and orbit (path) information in which time information is added to the position information.
- the control system 34 has the swivel angle ⁇ z (n) of the swivel table 7 acquired by the boom position calculation unit 31b, the expansion / contraction length lb (n), and the undulation angle of the boom 9.
- the current position coordinates q (n) of the tip of the boom 9 are calculated from ⁇ x (n), and the steps are shifted to steps S202 and S302.
- control system 34 uses the above equation (4) from the current position coordinates p (n) of the luggage W and the current position coordinates q (n) of the boom 9 by the boom position calculation unit 31b.
- the rope feeding amount l (n) is calculated, and the steps are shifted to steps S203 and S303.
- the control system 34 is the target position of the luggage W after a unit time t has elapsed from the target trajectory signal Pd ⁇ with reference to the current position coordinate p (n) of the luggage W by the boom position calculation unit 31b.
- the target position coordinates p (n + 1) of the luggage W are calculated, and the steps are shifted to steps S204 and S304.
- the control system 34 calculates the acceleration of the luggage W from the current position coordinate p (n) of the luggage W and the target position coordinate p (n + 1) of the luggage W by the boom position calculation unit 31b, and gravity.
- the direction vector e (n + 1) of the wire rope is calculated using the above equation (5) using the acceleration, and the steps are shifted to steps S205 and S305.
- step S205 and S305 the control system 34 uses the above equation (6) from the wire rope feeding amount l (n) calculated by the boom position calculation unit 31b and the wire rope direction vector e (n + 1).
- the target position coordinates q (n + 1) of the boom 9 are calculated, the boom position calculation step B is completed, and the step is shifted to step S110 or step S132 (see FIG. 6).
- the control system 34 of the crane 1 calculates the target position coordinates q (n + 1) of the boom 9 by repeating the target trajectory calculation step A and the boom position calculation step B, and after the unit time t elapses, the wire rope feeding amount
- the direction vector e (n + 2) of the wire rope is calculated from l (n + 1), the current position coordinate p (n + 1) of the luggage W, and the target position coordinate p (n + 2) of the luggage W.
- control system 34 further calculates the target position coordinate q (n + 2) of the boom 9 after the lapse of the unit time t from the wire rope feeding amount l (n + 1) and the wire rope direction vector e (n + 2).
- control system 34 calculates the direction vector e (n) of the wire rope, and uses the inverse kinetics to obtain the current position coordinate p (n + 1) of the luggage W, the target position coordinate p (n + 2) of the luggage W, and the wire rope.
- the target position coordinates q (n + 2) of the boom 9 after the unit time t are sequentially calculated from the direction vector e (n + 2) of.
- the control system 34 generates a target operation signal Md based on the target position coordinates q (n + 2) of the boom 9 and controls each actuator.
- the learning type inverse dynamics model 40 of the control system 34 is composed of a plurality of subsystems having clear physical characteristics. Further, the learning type inverse dynamics model 40 can be regarded as a one-layer neural network by multiplying the outputs from the plurality of subsystems by weighting coefficients.
- the weighting coefficients w1, w2, w3 ... Wn are independently adjusted based on the difference between the target operation signal Md and the actual operation signal Mdr, so that the first subsystem SM1
- the physical characteristics of the nth subsystem SMn can be approximated to the characteristics of the crane 1.
- the control system 34 of the crane 1 flexibly responds to changes in its dynamic characteristics while the crane 1 is operating, and the weighting coefficients w1, w2, w3, ... Wn of the learning type inverse dynamics model 40.
- the higher-order transfer function is adjusted for each of a plurality of lower-order first subsystem SM1, second subsystem SM2, third subsystem SM3 ... nth subsystem SMN.
- control system 34 controls the actuator with the luggage W as a reference, the control system 34 learns the dynamic characteristics of the crane 1 from the movement of the luggage W, thereby suppressing the shaking of the luggage W and in line with the intention of the operator.
- the luggage W can be moved in the above manner.
- the control system 34 is a model in which the learning type inverse dynamics model 40 is configured as a plurality of subsystems, but other physical characteristics are clear.
- control system 34 since the control system 34 generates the target trajectory signal Pd ⁇ input to the learning type inverse dynamics model 40 via the target value filter 35 which is a fourth-order low-pass filter, the singular point in the target trajectory signal Pd ⁇ Occurrence is suppressed. Therefore, the control system 34 inputs the target orbital signal Pd ⁇ in which the singularity is suppressed into the learning type inverse dynamics model 40, so that the learning convergence of the learning type inverse dynamics model 40 is promoted. Thereby, when the control system 34 controls the actuator with reference to the luggage W, the control system 34 can move the luggage W in a manner in accordance with the intention of the operator while suppressing the shaking of the luggage W.
- the present invention is not limited to mobile cranes, but can be applied to various cranes.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Artificial Intelligence (AREA)
- Mechanical Engineering (AREA)
- Evolutionary Computation (AREA)
- Health & Medical Sciences (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Medical Informatics (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
Description
クレーンのアクチュエータを制御する制御システムであって、
アクチュエータの目標作動量に関する信号を生成する信号処理部と、
目標作動量に関する信号とフィードバックしたアクチュエータの作動量に関する信号との差分に基づいてアクチュエータを制御するフィードバック制御部と、
フィードバック制御部と協働しつつ目標作動量に関する信号に基づいてアクチュエータを制御し、教師信号に基づいて重み係数を調整することでアクチュエータの特性を学習するフィードフォワード制御部と、を備え、
信号処理部は、入力信号からパルス状成分を除去して入力信号を目標作動量に関する信号に変換する。
以下に、図1と図2とを用いて、本発明の一実施形態に係る作業車両として移動式クレーン(ラフテレーンクレーン)であるクレーン1について説明する。なお、本実施形態においては、作業車両としてクレーン1(ラフテレーンクレーン)ついて説明を行うが、作業車両は、オールテレーンクレーン、トラッククレーン、積載型トラッククレーン等でもよい。また、ワイヤロープで荷物を吊り下げる作業装置にも適用可能である。
f:ワイヤロープの張力、kf:ばね定数、m:荷物Wの質量、q:ブーム9の先端の現在位置または目標位置、p:荷物Wの現在位置または目標位置、l:ワイヤロープの繰出し量、e:方向ベクトル、g:重力加速度
2 車両
3 車輪
4 エンジン
5 アウトリガ
6 クレーン装置
7 旋回台
7b 旋回台カメラ
8 旋回用油圧モータ
9 ブーム
9a ジブ
10 メインフックブロック
10a メインフック
11 サブフックブロック
11a サブフック
12 起伏用油圧シリンダ
13 メインウインチ
14 メインワイヤロープ
15 サブウインチ
16 サブワイヤロープ
17 キャビン
18 旋回操作具
19 起伏操作具
20 伸縮操作具
21m メインドラム操作具
21s サブドラム操作具
23 旋回用バルブ
24 伸縮用バルブ
25 起伏用バルブ
26m メインバルブ
26s サブバルブ
27 旋回用センサ
28 伸縮用センサ
29 方位センサ
30 起伏用センサ
31 制御装置
31a 目標軌道算出部
31b ブーム位置算出部
31c 作動信号生成部
32 荷物移動操作具
32a 積分器
33 巻回用センサ 34 制御システム
35 目標値フィルタ
36 目標作動量算出部
37 フィードバック制御部
39 フィードフォワード制御部
38 フィードバック制御器
40 学習型逆動力学モデル
51 伸縮用油圧シリンダ
52 メイン油圧モータ
53 サブ油圧モータ
W 荷物
Vd 目標移動速度信号
Pd 目標移動位置信号
Pdα 目標軌道信号
w1、w2、w3、w4 重み係数
Claims (12)
- クレーンのアクチュエータを制御する制御システムであって、
前記アクチュエータの目標作動量に関する信号を生成する信号処理部と、
前記目標作動量に関する信号とフィードバックした前記アクチュエータの作動量に関する信号との差分に基づいて前記アクチュエータを制御するフィードバック制御部と、
前記フィードバック制御部と協働しつつ前記目標作動量に関する信号に基づいて前記アクチュエータを制御し、教師信号に基づいて重み係数を調整することで前記アクチュエータの特性を学習するフィードフォワード制御部と、を備え、
前記信号処理部は、入力信号からパルス状成分を除去して前記入力信号を前記目標作動量に関する信号に変換する、
制御システム。 - 前記荷物の目標速度に関する信号から、前記入力信号であり前記パルス状成分を有する前記荷物の目標移動位置に関する信号を生成する前側処理部を、更に備える、請求項1に記載の制御システム。
- 前記信号処理部は、
前記入力信号から所定値以上の周波数を除去して前記荷物の目標軌道に関する信号を生成する第一処理部と、
前記目標軌道に関する信号に基づいて前記目標作動量に関する信号を生成する第二処理部と、を有する、請求項1又は2に記載の制御システム。 - 前記第一処理部は、ローパスフィルタにより構成されている、請求項3に記載の制御システム。
- 前記教師信号は、前記目標作動量に関する信号と前記作動量に関する信号との差分である、請求項1~5の何れか一項に記載の制御システム。
- 前記フィードバック制御部と前記フィードフォワード制御部とは、互いに並列に設けられ、且つ、前記信号処理部と直列に設けられている、請求項1~6の何れか一項に記載の制御システム。
- 前記フィードフォワード制御部は、
前記クレーンにおけるアーム部の旋回角度、前記アーム部の起伏角度、および前記アーム部の伸縮長さから、前記アーム部の先端の現在位置を算出し、
前記荷物の目標位置に対する前記荷物の現在位置の差分に基づいて前記重み係数を調整し、
前記重み係数が調整された前記複数のサブシステムを用いて、
前記荷物の現在位置と前記アーム部の先端の現在位置とから、前記ワイヤロープの繰出し量を算出し、
前記荷物の現在位置と前記荷物の目標位置とから、前記ワイヤロープの方向ベクトルを算出し、
前記ワイヤロープの繰出し量と前記ワイヤロープの前記方向ベクトルとから、前記荷物の目標位置における前記アーム部の先端の目標位置を算出し、
前記アーム部の先端の目標位置に基づいて前記フィードフォワード制御信号を生成する請求項1~7の何れか一項に記載の制御システム。 - 前記フィードバック制御部は、
前記クレーンのアーム部の旋回角度、前記アーム部の起伏角度、および前記アーム部の伸縮長さから、前記アーム部の先端の現在位置を算出し、
前記荷物の目標位置に対する前記荷物の現在位置の差分に基づいて前記荷物の現在位置と前記アーム部の先端の現在位置とから、前記ワイヤロープの繰出し量を算出し、
前記荷物の現在位置と前記荷物の目標位置とから、前記ワイヤロープの方向ベクトルを算出し、
前記ワイヤロープの繰出し量と前記ワイヤロープの前記方向ベクトルとから、前記荷物の目標位置における前記アーム部の先端の目標位置を算出し、
前記アーム部の先端の目標位置に基づいて前記フィードバック制御信号を生成する請求項1~8の何れか一項に記載の制御システム。 - 前記フィードフォワード制御部は、複数のサブシステムを有する複数のサブシステム群を有し、
複数の前記サブシステム群はそれぞれ、複数の前記アクチュエータに対応付けて設けられている、請求項1~9の何れか一項に記載の制御システム。 - 複数の前記アクチュエータは、前記クレーンのアーム部を構成するブームを旋回させるためのアクチュエータ、前記ブームを起伏させるためのアクチュエータ、前記ブームを伸縮させるためのアクチュエータ、および前記クレーンのフックを昇降させるためのアクチュエータを含む、請求項10に記載の制御システム。
- 請求項1~11の何れか一項に記載の制御システムを備えたクレーン。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/766,933 US20240077840A1 (en) | 2019-10-11 | 2020-10-12 | Control system, and crane |
JP2021551744A JP7176645B2 (ja) | 2019-10-11 | 2020-10-12 | 制御システムおよびクレーン |
EP20873427.7A EP4043967A4 (en) | 2019-10-11 | 2020-10-12 | CONTROL SYSTEM AND CRANE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019187994 | 2019-10-11 | ||
JP2019-187994 | 2019-10-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021070971A1 true WO2021070971A1 (ja) | 2021-04-15 |
Family
ID=75438233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2020/038521 WO2021070971A1 (ja) | 2019-10-11 | 2020-10-12 | 制御システムおよびクレーン |
Country Status (4)
Country | Link |
---|---|
US (1) | US20240077840A1 (ja) |
EP (1) | EP4043967A4 (ja) |
JP (1) | JP7176645B2 (ja) |
WO (1) | WO2021070971A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116627043A (zh) * | 2023-07-24 | 2023-08-22 | 中国船舶集团有限公司第七〇七研究所 | 一种联合锚泊系统的区域动力定位控制方法 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0781876A (ja) | 1993-09-20 | 1995-03-28 | Nippon Steel Corp | 懸垂式クレーンの振止め・位置制御方法 |
JP2009217417A (ja) * | 2008-03-10 | 2009-09-24 | Kyoto Univ | 油圧駆動システムの制御方式 |
JP2010228905A (ja) | 2009-03-30 | 2010-10-14 | Tadano Ltd | 作業機の遠隔操作装置及び遠隔操作方法 |
JP2013184826A (ja) * | 2012-03-09 | 2013-09-19 | Liebherr-Werk Nenzing Gmbh | クレーン制御装置、クレーン、クレーンの制御方法、及びその制御方法を実行するためのソフトウェア |
WO2013190821A1 (ja) * | 2012-06-19 | 2013-12-27 | 住友重機械工業株式会社 | フォークリフト用のモータ駆動装置およびそれを用いたフォークリフト |
JP2017117366A (ja) * | 2015-12-25 | 2017-06-29 | 株式会社ジェイテクト | モータ制御装置 |
JP2018092279A (ja) * | 2016-11-30 | 2018-06-14 | 株式会社タダノ | アクチュエータの制御装置及びクレーン |
JP2019156609A (ja) * | 2018-03-15 | 2019-09-19 | 株式会社タダノ | クレーンおよびクレーンの制御方法 |
JP2019164484A (ja) * | 2018-03-19 | 2019-09-26 | ファナック株式会社 | 機械学習装置、サーボ制御装置、サーボ制御システム、及び機械学習方法 |
JP2019187994A (ja) | 2018-04-27 | 2019-10-31 | 川崎重工業株式会社 | 外科手術システム |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6442439B1 (en) * | 1999-06-24 | 2002-08-27 | Sandia Corporation | Pendulation control system and method for rotary boom cranes |
JP4472949B2 (ja) * | 2003-08-21 | 2010-06-02 | 秀和 西村 | ジブクレーンの制御方法及び装置 |
CN102481929B (zh) * | 2009-08-18 | 2015-06-17 | 丰田自动车株式会社 | 车辆控制系统 |
FR3056976B1 (fr) * | 2016-10-05 | 2018-11-16 | Manitowoc Crane Group France | Procede de commande de grue anti-ballant a filtre du troisieme ordre |
JP6514257B2 (ja) * | 2017-03-29 | 2019-05-15 | ファナック株式会社 | 機械学習装置、サーボ制御装置、サーボ制御システム、及び機械学習方法 |
US20200327403A1 (en) * | 2019-04-15 | 2020-10-15 | The Hong Kong University Of Science And Technology | All optical neural network |
-
2020
- 2020-10-12 JP JP2021551744A patent/JP7176645B2/ja active Active
- 2020-10-12 WO PCT/JP2020/038521 patent/WO2021070971A1/ja active Application Filing
- 2020-10-12 US US17/766,933 patent/US20240077840A1/en active Pending
- 2020-10-12 EP EP20873427.7A patent/EP4043967A4/en active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0781876A (ja) | 1993-09-20 | 1995-03-28 | Nippon Steel Corp | 懸垂式クレーンの振止め・位置制御方法 |
JP2009217417A (ja) * | 2008-03-10 | 2009-09-24 | Kyoto Univ | 油圧駆動システムの制御方式 |
JP2010228905A (ja) | 2009-03-30 | 2010-10-14 | Tadano Ltd | 作業機の遠隔操作装置及び遠隔操作方法 |
JP2013184826A (ja) * | 2012-03-09 | 2013-09-19 | Liebherr-Werk Nenzing Gmbh | クレーン制御装置、クレーン、クレーンの制御方法、及びその制御方法を実行するためのソフトウェア |
WO2013190821A1 (ja) * | 2012-06-19 | 2013-12-27 | 住友重機械工業株式会社 | フォークリフト用のモータ駆動装置およびそれを用いたフォークリフト |
JP2017117366A (ja) * | 2015-12-25 | 2017-06-29 | 株式会社ジェイテクト | モータ制御装置 |
JP2018092279A (ja) * | 2016-11-30 | 2018-06-14 | 株式会社タダノ | アクチュエータの制御装置及びクレーン |
JP2019156609A (ja) * | 2018-03-15 | 2019-09-19 | 株式会社タダノ | クレーンおよびクレーンの制御方法 |
JP2019164484A (ja) * | 2018-03-19 | 2019-09-26 | ファナック株式会社 | 機械学習装置、サーボ制御装置、サーボ制御システム、及び機械学習方法 |
JP2019187994A (ja) | 2018-04-27 | 2019-10-31 | 川崎重工業株式会社 | 外科手術システム |
Non-Patent Citations (1)
Title |
---|
See also references of EP4043967A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116627043A (zh) * | 2023-07-24 | 2023-08-22 | 中国船舶集团有限公司第七〇七研究所 | 一种联合锚泊系统的区域动力定位控制方法 |
CN116627043B (zh) * | 2023-07-24 | 2023-09-15 | 中国船舶集团有限公司第七〇七研究所 | 一种联合锚泊系统的区域动力定位控制方法 |
Also Published As
Publication number | Publication date |
---|---|
JP7176645B2 (ja) | 2022-11-22 |
US20240077840A1 (en) | 2024-03-07 |
EP4043967A4 (en) | 2023-11-01 |
JPWO2021070971A1 (ja) | 2021-04-15 |
EP4043967A1 (en) | 2022-08-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7172243B2 (ja) | クレーンおよびクレーンの制御システム | |
JP7069888B2 (ja) | クレーンおよびクレーンの制御方法 | |
WO2020196808A1 (ja) | クレーンの制御方法およびクレーン | |
JP7119674B2 (ja) | クレーン | |
JP7192527B2 (ja) | クレーン | |
WO2020196809A1 (ja) | クレーンの制御方法およびクレーン | |
WO2021070971A1 (ja) | 制御システムおよびクレーン | |
WO2021132507A1 (ja) | 作業機の制御システムおよびクレーン | |
CN112912332B (zh) | 起重机装置 | |
JP7172256B2 (ja) | クレーン | |
JPWO2020017594A1 (ja) | クレーン | |
WO2022085675A1 (ja) | クレーン、クレーンの特性変化判定装置、及びクレーンの特性変化判定システム | |
JP7501777B2 (ja) | 故障予兆検出システムおよび作業車 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20873427 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2021551744 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 17766933 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2020873427 Country of ref document: EP Effective date: 20220511 |