The present invention discloses a hoisting container pose control method of a double-rope winding type ultra-deep vertical shaft hoisting system. The method comprises the following steps of step 1, building a mathematical model of a double-rope winding type ultra-deep vertical shaft hoisting subsystem; step 2, building a position closed-loop mathematical model of an electrohydraulic servo subsystem; step 3, outputting a flatness characteristics of a nonlinear system; step 4, designing a pose leveling flatness controller of a double-rope winding type ultra-deep vertical shaft hoisting subsystem; and step 5, designing a position closed-loop flatness controller of the electrohydraulic servo subsystem. The present invention has the advantages that a system state variable derivation process is omitted, so that a design process of the controllers is greatly simplified. The response time of the controllers can be shortened, and a hoisting container can fast reach a leveling state. In an application process of the system, sensor measurement noise and system non-modeling characteristics can be amplified through state variable derivation, so that tracking errors can be reduced through design of the flatness controller. A control process is more precise, and good control performance is ensured.

Aspects provide fluid responsive actuators and methods of using fluid responsive actuators capable of generating a power-to-volume ratio sufficient to inject a drug from a syringe within an injection period from about 1 to about 60 seconds after exposure of the fluid responsive elements to a fluid. The fluid responsive actuators can be used to inject viscous drugs to a patient.

Aspects provide fluid responsive actuators and methods of using fluid responsive actuators capable of generating a power-to-volume ratio sufficient to inject a drug from a syringe within an injection period from about 1 to about 60 seconds after exposure of the fluid responsive elements to a fluid. The fluid responsive actuators can be used to inject viscous drugs to a patient.

There is provided an hydraulic actuation system for an aircraft, the hydraulic actuation system includes an actuator (A), a primary actuation arrangement to provide hydraulic fluid to control the actuator (A), wherein the hydraulic actuation system is configured to detect a fault in the actuator (A). The hydraulic actuation system also includes a secondary actuation arrangement to provide hydraulic fluid to control the actuator (A) in response to a detection of a fault in the actuator (A).

An inner-circulating high speed hydraulic system, a hydraulic platform and a hydraulic platform assembly consisting of said systems, wherein the inner-circulating high speed hydraulic system comprises a hydraulic cylinder component and a pressure valve component, the hydraulic cylinder component including a high pressure cylinder, a hydraulic plunger, and a housing, wherein an axial hole and radial holes intersecting with the axial hole are disposed at the top/bottom of the high pressure cylinder and the high pressure cylinder is contained within the housing, wherein the inner-circulating oil chamber may communicate with the axial hole via the radial holes and further communicate with chambers at the top/bottom of the hydraulic plunger, wherein compressed air inlets are disposed on the housing and a lower end of the hydraulic plunger is connected to an actuating element; and a pressure valve component, comprising a pressure servo motor and a pressure plunger driven by the pressure servo motor to move up and down within the axial hole disposed at the top/bottom of the high pressure cylinder. Accurate control on dwell time for pressing at the up and down stop points of the platform, and highly precise adjustment to duration of the dwell time are enabled by the present invention. Thus, a stamping process with high quality is achieved.

An inner-circulating high speed hydraulic system, a hydraulic platform and a hydraulic platform assembly consisting of said systems, wherein the inner-circulating high speed hydraulic system comprises a hydraulic cylinder component and a pressure valve component, the hydraulic cylinder component including a high pressure cylinder, a hydraulic plunger, and a housing, wherein an axial hole and radial holes intersecting with the axial hole are disposed at the top/bottom of the high pressure cylinder and the high pressure cylinder is contained within the housing, wherein the inner-circulating oil chamber may communicate with the axial hole via the radial holes and further communicate with chambers at the top/bottom of the hydraulic plunger, wherein compressed air inlets are disposed on the housing and a lower end of the hydraulic plunger is connected to an actuating element; and a pressure valve component, comprising a pressure servo motor and a pressure plunger driven by the pressure servo motor to move up and down within the axial hole disposed at the top/bottom of the high pressure cylinder. Accurate control on dwell time for pressing at the up and down stop points of the platform, and highly precise adjustment to duration of the dwell time are enabled by the present invention. Thus, a stamping process with high quality is achieved.

A substance dispensing system that includes a hydraulic drive system is disclosed. The hydraulic drive system includes a hydraulic valve having a variable pressure setting, the hydraulic valve operable between a closed position in which a hydraulic pump moves hydraulic fluid to a hydraulic cylinder and an open position in which the hydraulic pump moves the hydraulic fluid to a hydraulic reservoir. The substance dispensing system of the present disclosure provides a system that recirculates hydraulic fluid in a hydraulic drive system instead of recirculating a substance back to a container via a pump. The substance dispensing system of the present disclosure allows for precise, accurate, and instantaneous control of an external force in a substance dispensing system.

A substance dispensing system that includes a hydraulic drive system is disclosed. The hydraulic drive system includes a hydraulic valve having a variable pressure setting, the hydraulic valve operable between a closed position in which a hydraulic pump moves hydraulic fluid to a hydraulic cylinder and an open position in which the hydraulic pump moves the hydraulic fluid to a hydraulic reservoir. The substance dispensing system of the present disclosure provides a system that recirculates hydraulic fluid in a hydraulic drive system instead of recirculating a substance back to a container via a pump. The substance dispensing system of the present disclosure allows for precise, accurate, and instantaneous control of an external force in a substance dispensing system.

A crane is disclosed, the crane includes detachable hydraulic cylinder including a head side oil chamber and a rod side oil chamber both to be connected to a control valve through a joint, in which a head side hydraulic detecting section and a rod side hydraulic detecting section are each provided to the hydraulic cylinder, and a connection state between the hydraulic cylinder and the control valve is determined based on a head side hydraulic pressure and a rod side hydraulic pressure in a period until a predetermined time elapses after supply of electric power to the head side hydraulic detecting section and the rod side hydraulic detecting section is started and an operation tool for hydraulic cylinder switches the control valve to a state of supplying hydraulic fluid to the hydraulic cylinder.

A novel and useful hybrid fast charging system for electric vehicles incorporating an efficient hydraulic storage and regeneration system (ESRS) that converts irregular, non-constant, and variable input power to regular, constant, and controlled output power using hydraulics whereby the irregular input power is used to charge an accumulator array with high pressurized oil. Subsequently, energy is released rapidly in a controlled fashion using a hydraulic motor operated by the pressurized hydraulic fluid from the accumulator array, to power one or more fast charge circuits. The output mechanical power supplied is used to supply electricity to one or more EV charging stations. The rapid discharge of the accumulators is sufficient to generate electricity at a high enough power to charge one or more electric vehicles relatively quickly with either ac or dc current, e.g., 350 kW for 10 minutes at 400 VDC or higher. Relatively low power supplied by the grid (utility) can be used to run an electric motor to charge the accumulators between discharges. In addition, the fast charge circuit can aggregate electricity generated by the ESRS with grid power to meet the high power requirements for fast charging EVs.