Abstract: A head unit device for controlling motion of an object includes shear thickening fluid (STF) and a chamber configured to contain a portion of the STF. The chamber further includes a piston compartment and an auxiliary compartment. The head unit device further includes an auxiliary bypass configured within the chamber, and a piston housed at least partially radially within the piston compartment. The chamber further includes a set of fluid flow sensors and a set of fluid manipulation emitters to control the auxiliary bypass to adjust the STF flow between the piston compartment and the auxiliary compartment to cause selection of one of a first range of shear rates or a second range of shear rates for the STF within the piston compartment.

Abstract: A hydraulic system (600) and method for reducing boom dynamics of a boom (30), while providing counter-balance valve protection, includes a hydraulic actuator (110), first and second counter-balance valves (300, 400), first and second control valves (700, 800), and first and second blocking valves (350, 450). A net load (90) is supported by a first chamber (116, 118) of the hydraulic actuator, and a second chamber (118, 116) of the hydraulic actuator may receive fluctuating hydraulic fluid flow from the second control valve to produce a vibratory response (950) that counters environmental vibrations (960) on the boom. The first blocking valve prevents the fluctuating hydraulic fluid flow from opening the first counter-balance valve. The first blocking valve may drain leakage from the first counter-balance valve.

Abstract: A device for amplifying a force includes a prime mover configured to receive a first force, and a secondary mover configured to generate a second force that is greater than the first force in response to the prime mover receiving the first force. The prime mover includes an output that, in response to the first force, rotates about a first axis through a power stroke defined by an angular displacement that is less than ninety degrees. The prime mover's output includes a first end that revolves about the first axis during the power stroke. The secondary mover includes an input, an output, and a body. The input includes a second end that is coupled with the first end of the prime mover's output, and that, as the first end of the prime mover's output revolves about the first axis through the power stroke, the second end of the secondary mover's input also revolves about the first axis and moves relative to the secondary mover's body.

Abstract: Provided is an arrangement and a method to detect an oil leakage between a first section and a second section of a hydraulic cylinder. A movable piston is arranged between the first and second section in a way that the piston changes position between the sections. The change in position is done in dependency of a difference between a first force, which acts at the first section on a first cross sectional area of the piston, and a second force, which acts at the second section on a second cross sectional area of the piston. The first section comprises hydraulic oil with a predefined first pressure, while the first force is calculated based on this pressure and based on the first area. The second section comprises hydraulic oil with a predefined second pressure, while the second force is calculated based on this pressure and based on the second area.

Abstract: A sealing element for sealing a pressure chamber is provided in a master cylinder for a clutch or brake system. The sealing element has a sealing lip for sealing a feed of hydraulic fluid from a reservoir mounted on a housing of the master cylinder into the pressure chamber and has a sealing structure for sealing the pressure chamber from the surroundings of the pressure chamber.

Abstract: A method for operating a hydraulic valve of a hydraulic device of a motor vehicle transmission device, wherein an actuating current of the hydraulic valve is superposed with a modulation alternating current in order to adjust a shaking vibration of the hydraulic valve by a control device, wherein a deviation between an actual pressure resulting from the actuating current and a setpoint pressure determined as a function of the actuating current is determined for the hydraulic device by means of an electronic computing device, and an amplitude and/or a frequency of the modulation alternating current is increased as compared to a starting value equalizing a hysteresis of the actual pressure relative to the setpoint pressure, as a function of a tolerance range being exceeded by the determined deviation.

Abstract: A compressor and a method of manufacturing the same are disclosed. The compressor includes a piston having a cylindrical shape and having formed therein a suction space, in which refrigerant gas is sucked, and a cylinder having, as a space formed therein, formed therein a compression space, in which refrigerant gas is compressed, by reciprocation of the piston in an axial direction. A gas inflow passage having one side communicating with a gas pocket outside the cylinder and the other side communicating with a space formed in the cylinder is formed in the cylinder, and the piston includes a plurality of fine irregularities formed in an outer circumferential surface of a guide facing the cylinder and provided at a position corresponding to the gas inflow passage.

Abstract: Provided is a master cylinder for an electronic brake system. The master cylinder for the electronic brake system includes a pedal simulator provided between a first master piston and a second master piston and having a rubber member that provides reaction force to a brake pedal, and the first master piston includes a first piston and a second piston coupled to be movable relative to each other and having a communication channel to allow a pressing medium to flow between a reservoir and a first master chamber, a communication channel sealing member configured to block a portion of the communication channel according to a relative movement of the first piston and the second piston, and an elastic member configured to provide elastic force in a direction in which the first piston and the second piston are spaced apart.

Abstract: A hydraulic rotary drive includes a first rotary drive element and at least two annular pistons connected to the first rotary drive element in a rotationally fixed manner and configured to be axially movable on the first rotary drive element between two end positions. Each annular piston has two annular spur serrations directed away from one another. The hydraulic rotary drive includes a second rotary drive element with ring type serrations that are complementary to the spur serrations of the annular pistons. The hydraulic rotary drive includes a control unit that is configured to control supply of hydraulic fluid to the annular pistons to cause a reciprocating movement of the annular pistons on a shaft in accordance with an operating signal. The hydraulic rotary drive includes a sensor arrangement communicatively coupled to the control unit and arranged to detect the positions of the annular pistons along respective sliding paths.

Abstract: An artificial muscle includes an electrode pair including a first electrode and a second electrode. One or both of the first electrode and the second electrode includes a central opening. The first electrode and the second electrode each include two or more fan portions and two or more bridge portions. Each fan portion includes a first end having an inner length, a second end having an outer length, a first side edge extending from the second end, and a second side edge extending from the second end. The outer length is greater than the inner length. Each bridge portion interconnecting adjacent fan portions at the first end.

Abstract: A pneumatically driven fluid pump apparatus is disclosed which includes a pump casing having an inner wall, a pump cap secured at a first end of the pump casing, and a liquid discharge tube in communication with the pump cap and extending at least partially within an interior area of the pump casing toward a second end of the pump casing, and where fluid is admitted into the pump casing at the second end. The pump cap has an airflow inlet for receiving a pressurized airflow from an external pressurized air source, which helps displace liquid collecting within the pump casing upwardly through the liquid discharge tube. A flow channeling subsystem is in communication with the airflow inlet and directs the pressurized airflow towards the inner wall of the pump casing to create a swirling airflow within the pump casing that extends along at least portions of the inner wall.

Abstract: A pneumatic textile system capable of transforming from a two-dimensional structure to a three-dimensional structure under pneumatic pressure is provided. The pneumatic textile system includes a seamless knit fabric having a grid configuration defining a plurality of grid areas—a first of the plurality of grid areas having a tensile strength that is different from a second of the plurality of grid areas. A pneumatic bladder member is disposed along at least a portion of a boundary between adjacent ones of the plurality of grid areas and is inflatable to exert a force on the seamless knit fabric, wherein upon inflation of the pneumatic bladder member the force is exerted on the seamless knit fabric such that the first of the plurality of grid area assumes a shape different than the second of the plurality of grid areas resulting in a three-dimensional structure transformation.

Abstract: The invention relates to an assembly (10) for a hydraulic brake system having a fluid container (12) for a brake fluid, an electronic control unit (14) with a first housing (16), a hydraulic block (18) with a second housing (20), and a brake pressure control device which is arranged at least in sections in the second housing (20), and a fastening device for fastening the fluid container (12) and the electronic control unit (14) to the hydraulic block (18). The second housing (20) has a first fluid connector for connecting to the fluid container (12) and a second fluid connector (24) for connecting to a hydraulic line of the brake system. The brake pressure control device is set up to pressurize the brake fluid. The fastening device has a single-piece connecting element (28) which, in the mounted state of the assembly (10), connects the second housing (20) to the first housing (16) and/or an electric motor (26) of the brake pressure control device.

Abstract: A hydraulic system for a rear gate of a baler implement includes a fluid circuit having a first portion connected to and disposed in fluid communication with a first fluid port of a hydraulic cylinder. A flow bypass assembly is disposed in the first portion of the fluid circuit. The flow bypass assembly includes a flow rate control valve selectively moveable between a first position allowing fluid communication therethrough at a first flow rate, and a second position blocking fluid communication therethrough. The flow bypass assembly further includes a bypass passageway for circulating the fluid when the flow rate control valve is closed. A flow restriction is disposed within the bypass passageway to provide a second flow rate that is less than the first flow rate.

Abstract: A closed-loop hydraulic circuit associated with a swing mechanism of a machine is controlled to obtain both a pressure control during acceleration and deceleration of the swing mechanism and a velocity control during coasting. In this manner, a system pressure in closed-loop hydraulic circuit is maintained below a maximum allowable pressure during acceleration and deceleration, and the swing mechanism can be rotated at a desired constant speed during coasting. This is achieved by controlling a hydraulic actuator adjusting the displacement of a variable displacement pump in different control modes, depending on a comparison between a desired displacement of the pump and an actual displacement of the same.

Abstract: A method for expanding a compressed gas (GD) at a gas pressure (pD) with a reciprocating-piston machine, wherein the reciprocating-piston machine includes a piston that can move to and fro and a working chamber delimited by the movable piston. The method being carried out as follows: the compressed gas (GD) is supplied to the working chamber via an actuatable rotary slide valve, wherein the compressed gas (GD) in the working chamber is expanded in the working chamber.

Abstract: A modular hydraulic device comprising: a housing having a receptacle having a first open end, a second end and a first port, the first port for facilitating an ingress and an egress of hydraulic fluid with respect to the housing; a sleeve configured to be received in the first open end and abut the second end; and an end cap for closing the first open end once the sleeve is inserted in the receptacle; the sleeve having: a body having a fourth lan (L4) positioned in the body for aligning with first port; a main cylinder for holding a main piston for reciprocation about a reciprocation axis; and a first bore portion fluidly coupled to the first lan, the first bore portion for receiving the ingress of the hydraulic fluid and for outputting the egress of the hydraulic fluid; wherein once assembled the main piston is coupled to a cam for facilitating said reciprocation.

Abstract: The disclosure provides a hydraulic control device capable of suppressing an excessive increase in the rotation speed of a second pump and stabilizing the discharge pressure of the second pump. The target rotation speed of the second pump for making a pressure value of a first oil close to an estimated value of a pressure value of a third oil is calculated, and a feedback amount with respect to the target rotation speed is calculated by subtracting the estimated value of the pressure value of the third oil from the pressure value of the first oil detected by a hydraulic sensor. Time regions for performing calculation of the feedback amount include an update region in which the feedback amount with respect to the target rotation speed is updated, and a hold region in which update of the feedback amount with respect to the target rotation speed is temporarily stopped.

Abstract: A hydraulic powering system includes a hydraulic cylinder, an accumulator, and a manifold assembly. The hydraulic cylinder includes: (i) a hydraulic cylinder construction having a hydraulic cylinder wall and first and second hydraulic cylinder end caps forming an internal volume, a piston constructed to slide within the internal volume between the first and second hydraulic cylinder end caps and dividing the internal volume into an extend region and a retract region, and a piston rod extending from the piston and through the retract region and one of the first and second end caps to outside the hydraulic cylinder; (ii) an extend port in fluid connection with the extend region of the hydraulic cylinder; and (iii) a retract port in fluid communication with the retract region of the hydraulic cylinder.

Abstract: A layered actuation structure includes one or more actuation platforms interleaved with one or more mounting platforms to form one or more actuation cavities between platform pairs, each platform pair having an individual mounting platform and an individual actuation platform. The layered actuation structure also includes a support arm coupled to the one or more mounting platforms, an actuation arm coupled to the one or more actuation platforms, and one or more artificial muscles disposed in each of the one or more actuation cavities. The one or more artificial muscles each include an electrode pair that is actuatable between a non-actuated state and an actuated state to direct a dielectric fluid into an expandable fluid region of a housing of the artificial muscle, expanding the expandable fluid region thereby applying pressure to the one or more actuation platforms, generating translational motion of the one or more actuation platforms.