A method for estimating load weights for a work vehicle including a boom pivotably coupled to the chassis of the work vehicle at a boom joint and an implement pivotably coupled to the boom at an implement joint may include receiving an input indicative of a tilt force associated with a tilt cylinder configured to pivot the implement about the implement joint, and an input indicative of a lift force associated with a lift cylinder configured to pivot the boom about the boom joint. The method may further include determining a torque about the implement joint caused by the load based on the tilt force and determining a torque about the boom joint caused by the load based on the lift and tilt forces. Additionally, the method may include estimating a weight of the load based on the torques about the boom and implement joints.

The present invention refers to a method for generating a control command to at least one actuator of an electrohydraulic machine, comprising a step of receiving and monitoring an input signal provided by a user interface, a step of determining if the monitored input signal is related to a user-induced input or a non-user-induced input, and a step of generating the control command upon processing the input signal in dependence on whether the input signal is a user-induced input or a non-user-induced input.

Provided is a driving apparatus capable of effectively preventing impact at the stroke end in the hydraulic cylinder. The driving apparatus includes a hydraulic pump, a cylinder control valve, an operation member, a drive command input unit inputting a cylinder drive command corresponding to a cylinder operation applied to the operation member to the cylinder control valve, a cylinder stroke detection unit, a cylinder drive command restriction unit restricting the cylinder drive command in response to the cylinder stroke to stop a piston of a hydraulic cylinder before the stroke end.

In some implementations, an implement control system includes an operator control configured for manipulation in one or more motions and a controller. The controller may be configured to, based on a particular motion of the one or more motions, cause actuation of one or more first actuators, configured to selectively raise or lower a first lateral side of a work implement of a machine, and one or more second actuators, configured to selectively raise or lower a second lateral side of the work implement, in tandem. The one or more first actuators and the one or more second actuators may be controlled by independent control systems.

An implement control system may include one or more first actuators configured to selectively raise or lower a work implement of a machine and one or more second actuators configured to tilt the work implement. The implement control system may include an operator control configured for manipulation in one or more motions. The implement control system may include a controller configured to, based on a particular motion of the one or more motions, selectively cause actuation of the one or more first actuators in a first mode or the one or more second actuators in a second mode.

A mechanism (100) for raising and lowering lifting arms (104) of a work vehicle includes an operating lever (111) that is secured at the column (103) of the steering wheel (102) of the work vehicle, a hydraulic arrangement and at least one linkage for operating the lifting arms (104). The hydraulic arrangement further includes a plurality of piston-cylinder pairs (105a-105b, 110a-110b, 115a-115b, 120a-120b, and 125a-125b) provided between the operating lever (111) and the linkage, for controlling the raising and lowering operation of the lifting arms (104). The operating lever (111) permits an effective and easy control of the raising and lowering operation of the lifting arms (104).

To make it possible to prevent a decrease in work speed due to a decrease in the speed of a given actuator when an operator unintentionally performs a fine operation of the control lever of the other actuator in a state in which the given actuator is driven by the hydraulic fluid delivered from a plurality of pumps, a controller (41) sets, as a composite dead zone line serving as a boundary of a composite dead zone, a composite dead zone line such that as an operation amount in one direction of a control lever (12L) or (13L) of a control lever device (12) or (13) is increased, the width of the composite dead zone corresponding to an operation amount in the other direction of the control lever is widened, and corrects the operation amount in the other direction such that the demanded flow rate of an actuator increases from zero, when the control lever is operated in the other direction in a state in which the operation amount in the one direction of the control lever remains within a range of the composite dead zone, and the operation amount in the other direction exceeds the composite dead zone line.

A system for reducing loader arm movement during operation of a work vehicle includes a sensor configured to capture data indicative of an angle of a loader arm of the vehicle relative to the vehicle chassis. A controller of the disclosed system is configured to control the operation of a valve of the vehicle such that fluid from a pump of the vehicle is supplied to first and second chambers of a fluid-driven actuator of the vehicle to initiate a ride control mode. Moreover, the controller is configured to monitor the angle of the loader arm relative to the chassis based on the data captured by the sensor. In addition, the controller is configured to control the operation of the pump based on the monitored angle after the ride control mode has been initiated

A control system of a construction machine comprises: a determination unit that determines a control object surface from a first design surface and a second design surface adjacent to the first design surface on the basis of a distance between a tilt bucket and the first design surface and a distance between the tilt bucket and the second design surface; a working equipment control unit that controls a tilt axis of the tilt bucket on the basis of the control object surface determined by the determination unit; and a display control unit that causes a display device to use different display modes to display the control object surface and a surface other than the control object surface.

Provided is a driving apparatus capable of effectively preventing impact at the stroke end in the hydraulic cylinder. The driving apparatus includes a hydraulic pump, a cylinder control valve, an operation member, a drive command input unit inputting a cylinder drive command corresponding to a cylinder operation applied to the operation member to the cylinder control valve, a cylinder stroke detection unit, a cylinder drive command restriction unit restricting the cylinder drive command in response to the cylinder stroke to stop a piston of a hydraulic cylinder before the stroke end.