Matches 1 - 38 out of 38

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US20080181793 Electric Feedback/Yoke Angle Sensor For Position Feedback  
A variable displacement pump including a first sensor configured to measure a position of the variable displacement pump. The first sensor may be a rotary angle sensor that is mounted to the yoke...
US20080184875 Valve assembly and a hydraulic actuator comprising the valve assembly  
A valve assembly (2) forming a bridge circuit and a hydraulic actuator comprising at least one valve assembly (2) are disclosed. The valve assembly (2) is fluidly connectable between a fluid...
US20140174069 HYDRAULIC CONTROL SYSTEM HAVING SWING MOTOR ENERGY RECOVERY  
A hydraulic control system for a machine is disclosed. The hydraulic control system may have a tank, a pump, a swing motor having a first chamber and a second chamber, and at least one control...
US20140047824 ELECTROHYDRAULIC CONTROLLER FEEDBACK SYSTEM AND METHOD  
An electrohydraulic controller feedback system and method including an electrohydraulic operator controller and a feedback mechanism is disclosed. An operator controls a machine hydraulic function...
US20140283509 POWER REGENERATION DEVICE FOR WORKING MACHINE AND WORKING MACHINE  
In a lowering operation of a boom, the amount of operation of a control lever is detected by a pressure sensor and input to a controller. Based on the input operation amount, the controller...
US20100212489 REGULATION STRUCTURE FOR A HYDRAULIC CYLINDER UNIT WITH CASCADE STATUS REGULATOR  
A regulation structure (13) for regulating a hydraulic cylinder unit (1) has an internal regulator (15) and an external regulator (16). The external regulator is supplied with a set force (F*) or...
US20090199703 POSITIONER FOR DOUBLE-ACTING PNEUMATIC ACTUATOR, DOUBLE-ACTING PNEUMATIC ACTUATOR AND METHOD FOR OPERATING THE DOUBLE-ACTING PNEUMATIC ACTUATOR  
In a positioner for a double-acting pneumatic actuator having first and second pneumatically loadable working chambers as well as a movable working part which is shiftable for an actuating...
US20090173220 Method of driving an hydraulic Actuator by means of a pressure controlled proportioning solenoid valve  
A method of driving a hydraulic actuator provided with a pressure-controlled proportioning solenoid valve; the method includes the steps of: determining a first open-loop contribution according to...
US20150075360 HYDRAULIC CONTROL CIRCUIT AND ITS CONTROL METHOD  
In a hydraulic control circuit including a solenoid valve, whose change responsiveness in an actual pressure with respect to a change in an instructional pressure deteriorates when the...
US20140230643 ACTUATOR DISPLACEMENT MEASUREMENT SYSTEM IN ELECTRONIC HYDRAULIC SYSTEM OF CONSTRUCTION EQUIPMENT  
An actuator displacement measuring system in an electro-hydraulic system for a construction machine is disclosed, which can detect an actuator displacement using the characteristics of an...
US20140076154 FLAP ACTUATOR  
The invention relates to a flap actuator, in particular to a servo/spoiler actuator, comprising at least one electrohydraulic servo valve and at least one actuator which are hydraulically...
US20090133573 METHOD FOR IDENTIFICATION OF THE DRIVE TYPE OF AN ACTUATING DRIVE  
The disclosure relates to a method for identification of the drive type of an actuating drive, e.g., a pneumatic actuating drive, having a position regulator in order to control an actuating...
US20090211435 Method and Device for Suppressing Vibration of Boom of Concrete Pump Truck  
The present invention discloses a method and device for suppressing vibration of boom of concrete pump truck, in which the boom cylinder is connected with the vibration suppression cylinder; the...
US20110056805 MOVING FLOOR HYDRAULIC ACTUATOR ASSEMBLIES  
A hydraulic moving floor actuator in a slat-type reciprocating moving floor system having movable floor slats arranged side-by-side in parallel, with each slat extending longitudinally along a...
US20100050857 Method of Operating A Motor Vehicle Brake System  
In order to impart a pleasant brake pedal feeling to the operator in the transition from a ‘conventional mode’ to a ‘brake-by-wire’ mode, it is disclosed that the travel (s) covered upon...
US20080257422 Electro-Hydraulic Control Device, Valve and Activating Electronics  
An electro-hydraulic control device is equipped with a valve and with activating electronics for the electrical activation of the valve as a function of a control signal. A sensor component or...
US20100006045 HYDRAULIC ACTUATOR CONTROL DEVICE AND HYDRAULIC ACTUATOR CONTROL METHOD  
In a hydraulic actuator control device, a changing tendency of responsiveness of a hydraulic actuator to changes in the oil control valve (OCV) drive duty of a virtual OCV is stored as model...
US20100162885 SYSTEM AND METHOD FOR ENABLING FLOATING OF EARTHMOVING IMPLEMENTS  
A system and method for performing a floating function in an earthmoving implement of an earthmoving machine without physically connecting chambers within a hydraulic actuator that is adapted to...
US20090178551 SERVO SYSTEM USING FEEDBACK  
A servo control system comprising a hydraulic actuator, a position sensor and a hydraulic control valve. The hydraulic actuator is coupled to a gas controlled valve. The position sensor measures...
US20090223358 METHOD OF VALVE CALIBRATION  
A method of calibrating an electrically actuated hydraulic valve in a system that controls the flow of hydraulic fluid to a hydraulic cylinder connected to a machine element operates...
US20140123846 ELECTROPNEUMATIC FIELD DEVICE  
In an electropneumatic field device for controlling a pneumatic actuator, an energy transducer is provided which converts pneumatic energy into electrical energy. The energy transducer has a...
US20100018384 DRIVE SYSTEM AND METHOD OF MONITORING A HYDROSTATIC DRIVE  
The invention relates to a drive system and to a method for monitoring a hydrostatic drive (1). The hydrostatic drive (1) has at least one hydrostatic piston engine (2) on which a control unit (6,...
US20100300279 Point Of Use Actuator  
A hydraulic actuator system designed to inwardly contain major portions of its control system. The system includes a unique non-vented and air tight sealed reservoir with expandable bladder. This...
US20100313981 Proportional Position Feedback Hydraulic Servo System  
A system for positioning a device such as a valve with a mechanical input using a fluid operated actuator, a mechanical position feedback member coupled to a feedback element of the fluid operated...
US20050172794 Drive mechanism for the positioning of an actuator, such as a valve, and device for the control of an actuator  
A drive mechanism for the positioning of an actuator, such as a valve, containing an actuating component that can be coupled with an actuating element of the actuator is described. A driving force...
US20100282067 METHOD AND DEVICE FOR INDICATING THE POSITION OF HYDRAULICALLY ACTUATED ARMATURES  
Method of indicating the position of a hydraulically actuated armature, comprising an adjust cylinder for actuating the armature, connected by at least one pressure medium line to an adjustment...
US20090132131 WORKING MACHINE  
A working machine control device is provided which can surely determine whether working equipment attached to a working machine is in an operation state. The working machine control device is...
US20090247357 METHOD FOR ACTIVATING AN ACTUATING MEANS  
A method for controlling an actuating device in an automated shifting system of a motor vehicle. The position of the actuating device is determined by a path measurement system. The actuating...
US20100224058 Regulating Device for a Hydrostatic Piston Engine With Electronic Control Unit  
The invention relates to a regulating device for a hydrostatic piston engine. The regulating device (30) has an electronic control unit (17) for generating adjusting signals. An adjusting position...
US20100132542 ELECTRO-PNEUMATIC SYSTEM FOR CONTROLLING A DOUBLE-ACTING PNEUMATIC ACTUATOR  
In an electro-pneumatic system for controlling a double-acting pneumatic actuator having first and second working chambers, first and second preliminary pneumatic control components generate first...
US20140116241 ELECTROPNEUMATIC CONTROL DEVICE AND ELECTROPNEUMATIC SUBASSEMBLY  
In a electropneumatic field device, an electrical field input and a pneumatic supply input are provided. At least one field output is provided at which a field output signal is output based on a...
US20110247484 ACTUATING DRIVE FOR POSITIONING A FINAL CONTROL ELEMENT AND METHOD FOR CAPTURING A POSITION OF THE FINAL CONTROL ELEMENT  
In an actuating drive or method for capturing a position of a final control element to be positioned by a drive member of the actuating drive, the final control element is pushed from an initial...
US20170152869 METHOD FOR CONTROLLING GAS-PRESSURE-DRIVEN APPARATUS AND GAS-PRESSURE-DRIVEN APPARATUS  
A gas-pressure-driven apparatus includes a main body having a working chamber, a movable member moving relative to the main body with a pressure of the working chamber, a pressure sensor for...
US20160341222 SELF-LEVELING SYSTEM FOR A MOBILE HYDRAULIC CONCERT STAGE  
A deployable mobile stage system with an automatic leveling system. A remote controlling device interfaces with an internal controller of the mobile stage for transforming the stage from a...
US20160316611 CONSTANT PRESSURE HYDRAULIC CIRCUIT WITH RELIEF PROTECTION INDEPENDENT OF PRESSURE CIRCUIT  
A hydraulic circuit for an agricultural implement consisting of a hydraulic cylinder that exerts a force on a component of the implement. A pressure reduction valve located between a hydraulic...
US20160222995 PISTON LIMIT SENSING FOR FLUID APPLICATION  
Embodiments of the present disclosure describe a liquid delivery system that includes a cylinder, a piston within the cylinder, a rod connected to the piston, and a limit sensor system having a...
US20160010662 SELF-SNUBBING HYDRAULIC ACTUATION SYSTEM  
A self-snubbing hydraulic actuation system includes a hydraulic motor, a component actuator, a control valve, a valve actuator, and a variable resistance device. The hydraulic motor is configured,...
US20150284934 APPARATUS AND METHOD FOR CONTROLLING SWING OF CONSTRUCTION MACHINE  
Disclosed are an apparatus and method for controlling the swing of a construction machine, which are capable of achieving a preferential boom-up function or a preferential swing function based on...
Matches 1 - 38 out of 38