US5029067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operation control device
Assignee: KOMATSU SEISAKUSHO A CORP OF JAPAN KK
•
Filing: 1987-12-08
•
Granted: 1991-07-02
•
Expires: 2007-12-08
Abstract
Abstract An operation control device is disclosed. According to a drive command value generated depending on the manipulated amount of a plurality of operating means (11, 12, 13, 14, 15, 16), the operation control device controls the drive amount of actuators (BMS, AMS, BKS, LDM, RDM, TNM) associated with the operated actuator. In the drive amount control, the operation control device changes a ratio of the manipulated amount and the drive amount command value by work accuracy flow rate data (41), weights the drive command values based on the same manipulated values of said operating means by priority mode weight data (42), and/or controls the timing of supply of the drive energy from at least two separate energy sources (FFP, RP) as a drive energy source for the respective actuators, and the supply amount of the drive energy, under control of pump utilization data (43) and pump swash plate control data (44). Every time the operating means are operated, these pieces of the control data are properly determined through proper operations (including the look-up table processing) according to the operations of the operating means, the selections of the work accuracy mode select switch (21) and the priority mode select switch (22).
Inventors
- 👤 Kimio Nishida
- 👤 Toshio Yokoyama
- 👤 Yukio Moriya
- 👤 Takeshi Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:26
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/20; E02F9/22; E02F9/2221; E02F9/2239; E02F9/2242; E02F9/2004; E02F9/2232; E02F9/2235; E02F9/2278; E02F9/2292; E02F9/2296; F; F15; F15B; F15B11/00; F15B11/16; F15B11/161; F15B11/165; F15B11/17; F15B21/00; F15B21/08; F15B21/087; G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/40; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20546; F15B2211/20553; F15B2211/20576; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/32; F15B2211/327; F15B2211/40; F15B2211/405; F15B2211/40507; F15B2211/415; F15B2211/41572; F15B2211/42; F15B2211/426; F15B2211/428; F15B2211/45; F15B2211/50; F15B2211/505; F15B2211/50563; F15B2211/515; F15B2211/5159; F15B2211/52; F15B2211/528; F15B2211/60; F15B2211/63; F15B2211/6303; F15B2211/632; F15B2211/6323; F15B2211/6326; F15B2211/633; F15B2211/6333; F15B2211/6346; F15B2211/665; F15B2211/6652; F15B2211/70; F15B2211/71; F15B2211/7135; G05B2219/00; G05B2219/30; G05B2219/35; G05B2219/35438; G05B2219/41; G05B2219/41309; G05B2219/45; G05B2219/45012
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
190 words
An operation control device comprising: a plurality of actuators; a plurality of operating means for outputting respective drive command values for each of said plurality of actuators; a plurality of pressure oil supply means for supplying pressurized oil to each actuator at flow rates each corresponding to each of the drive command values outputted from said plurality of operating means; at least two pressure oil sources for transferring to each pressure oil supply means via at least two paths the pressurized oil which is supplied to each actuator; control means for controlling each pressure oil supply means so that the pressurized oil transferred from each of said pressure oil sources are respectively distributed to each actuator with respective flow rates according to priority orders of each of the actuators predetermined respectively for each of said at least two pressure oil sources; operation mode selecting means for selecting an operation mode from among a plurality of operation modes indicative of respective ratios; and means for setting a ratio of a drive command value for a manipulated amount of said operating means into a ratio selected by said operation mode selecting means.
Claim 2
Dependent Claim
190 words
An operation control device comprising: a plurality of actuators; a plurality of operating means for outputting respective drive command values for each of said plurality of actuators; a plurality of pressure oil supply means for supplying pressurized oil to each actuator at flow rates each corresponding to each of the drive command values outputted from said plurality of operating means; at least two pressure oil sources for transferring to each pressure oil supply means via at least two paths the pressurized oil which is supplied to each actuator; control means for controlling each pressure oil supply means so that the pressurized oil transferred from each of said pressure oil sources are respectively distributed to each actuator with respective flow rates according to priority orders of each of the actuators predetermined respectively for each of said at least two pressure oil sources; operation mode selecting means for selecting an operation mode from among a plurality of operation modes indicative of respective ratios; and means for setting a ratio of a drive command value for a manipulated amount of said operating means into a ratio selected by said operation mode selecting means.
Claim 3
Dependent Claim
214 words
An operation control device comprising: a plurality of actuators; a plurality of operating means for outputting respective drive command values for each of said plurality of actuators; a plurality of pressure oil supply means for supplying pressurized oil to each actuator at flow rates each corresponding to each of the drive command values outputted from said plurality of operating means; at least two pressure oil sources for transferring to each pressure oil supply means via at least two paths the pressurized oil which is supplied to each actuator; control means for controlling each pressure oil supply means so that the pressurized oil transferred from each of said pressure oil sources are respectively distributed to each actuator with respective flow rates according to priority orders of each of the actuators predetermined respectively for each of said at least two pressure oil sources; priority mode selecting means for selecting a weighting factor of each actuator set with respect to one priority mode from among weighting factors of respective actuators set for a plurality of priority modes; and means for respectively multiplying the weighting factor of each actuator selected by said priority mode selecting means by the drive command value of each actuator output from said operating means, and changing the drive command value of each actuator.
Claim 4
Dependent Claim
214 words
An operation control device comprising: a plurality of actuators; a plurality of operating means for outputting respective drive command values for each of said plurality of actuators; a plurality of pressure oil supply means for supplying pressurized oil to each actuator at flow rates each corresponding to each of the drive command values outputted from said plurality of operating means; at least two pressure oil sources for transferring to each pressure oil supply means via at least two paths the pressurized oil which is supplied to each actuator; control means for controlling each pressure oil supply means so that the pressurized oil transferred from each of said pressure oil sources are respectively distributed to each actuator with respective flow rates according to priority orders of each of the actuators predetermined respectively for each of said at least two pressure oil sources; priority mode selecting means for selecting a weighting factor of each actuator set with respect to one priority mode from among weighting factors of respective actuators set for a plurality of priority modes; and means for respectively multiplying the weighting factor of each actuator selected by said priority mode selecting means by the drive command value of each actuator output from said operating means, and changing the drive command value of each actuator.
References Cited (Backward Citations)
US3908375A
Cited
JPS5297088A
Cited
US4369625A
Cited
EP0071228A2
Cited
US4561249A
Cited
US4604716A
Cited
US4791549A
Cited
US4837734A
Cited
US4745744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-01 | 1994-12-31 | 1995-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-01 | 1998-12-31 | 1999-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-01 | 2002-12-31 | 2003-07-02 | $7700.00 | Window Closed / Lapsed |