45results about "Hydraulic programme control" patented technology

A system and method that remotely monitors and controls proppant usage in a fracturing operation. The system and method allow operators to wirelessly monitor and control proppant storage units from inside a datavan through sensors and control mechanisms that interface with fracturing software to schedule the flow of the proppant. A sensor monitors the weight, container level, or volume of the proppant being used to keep the induced hydraulic fracture open. A serial to Ethernet converter converts this information and sends it wirelessly to a datavan. A user at the datavan controls the proppant usage through a display in the datavan of the storage units with the appropriate weight. The container monitoring software links with the fracturing software, providing real-time information about proppant usage so that the user can properly schedule proppant flow to the well through valves, conveyor belts, and other control mechanisms.

The invention provides a multipoint incremental launching accumulative sliding construction method for steel roof truss. First, a slide support system of three chutes and six rails is set up; a high altitude assembly platform is set up beside the main structure; and a temporary support jig of the middle chute is set up along the midline of the main structure, using the concrete trough beam as the side chute. Then steel truss components are assembled on the ground, and are hoisted to the high altitude assembly platform to assemble a first sliding unit, and then the first sliding unit is connected with a hydraulic synchronous multipoint incremental launching mechanism; the hydraulic synchronous multipoint incremental launching mechanism consists of eight hydraulic crawl devices, three hydraulic pump stations and a synchronous incremental launching control system; after the first sliding unit is pushed, a second sliding unit is assembled and connected with the first sliding unit, and then a second time sliding is performed. Via such an assembly structure, the sliding movement is performed for n times, and then the backout bracket is unloaded, the high altitude assembly platform and the temporary support jig of the middle chute are dismounted. The invention solves the difficulty of safe and stable installation and emplacement in synchronous sliding of the steel roof truss, and at the same time reduces the engineering cost and shortens the construction period without affecting the construction of other structures.

A control of a full-automatic plastic filling and blowing and hollow molding machine of a PLC-high speed singlechip-PIC singlechip includes a PLC- high speed singlechip system which consists of a PLC, a high speed singlechip, a level conversion circuit and a current direction control circuit, a temperature control module which consists of a signal magnifying circuit of a N-path temperature sensor and a driving circuit of a N-path heating device, a hydraulic pressure control system which consists of a PIC singlechip and a driving system of a hydraulic pressure control device, a pneumatic control module and a control panel. The method of using the device of the present invention to automatically control the filling and blowing process of the full-automatic plastic filling and blowing and hollow molding machine includes obtaining the system information, controlling the mechanical motion, controlling the temperature during the process of filling and blowing and controlling a hydraulic pressure flux and constant current of electric current of an electro-liquid proportional valve, and the obtaining of the system information has two routes of a PLC control procedure and a touch-screen interruption disposal. The control has high automatization degree and reliability, friendly human-machine interface, high cost performance of the system and the simple, convenient and practical method.

A method for controlling the high-precision synchronous press-down at both sides of rolled plate features that a technique for high-precision two-stage synchronous control to press-down speed and the in-line real-time computer control to automatic complementary linkage of high-precision synchronizing are used. Its apparatus is composed of two high-precision two-stage press-down speed controlling mechanisms with hydraulic mechanism, computer, push-pull switching circuit and electro-hydraulic servo valve.

Apparatus is provided featuring a signal processor or processing module configured to receive signaling containing information about a pump no flow idle (NFI) state when the pump is running at a pump idle speed; and determine corresponding signaling containing information about whether the pump should remain in a no flow shutdown (NFSD) state or the pump NFI state, based upon the signaling received. The signal processor or processing module is configured to provide the corresponding signaling containing information about whether the pump should remain in the NFSD state or the NFI state.

The die cushion force setting apparatus according to an aspect of the present invention allows die cushion forces (component forces) acting on plural driving shafts to be set easily, makes it easy to apply strong or weak die cushion forces to a complex-shaped drawn part in a plane of a cushion pad, and provides a smooth die cushion force distribution. An operator manually enters a total die cushion force, axial component force of a left front hydraulic cylinder, and center-of-force position by operating an input device. Based on the information entered via the input device, the numerical computing device B1 calculates axial component forces of three hydraulic cylinders through numerical computations. The one axial component force thus entered and three axial component forces thus computed numerically are set as the axial component forces of four hydraulic cylinders.

A control method of special steel hot-rolling variable gain reduction of the invention, belongs to steel rolling technique field, the method is a steel rolling method that the special steel (including stainless steel, silicon steel and so on) strip steel automatically controlled by computer and software program is rolled by the finishing mill to realize variable gain reduction control, including: 1. completing set, storage, management, control of the parameter model and transferring to rolling mill control step computer based on the rolling steel kind and specification, rolling strip steel thickness, width and biting steel time delay, variable gain reduction and so on series parameter definite thereout by the parameter management step computer; 2. realizing reduction position, reduction position bounce amount, strip steel time delay biting steel and so on strip steel variable gain reduction control steel rolling method controlling automatically rolling mill by the rolling mill control step computer, the method makes finishing mill hydraulic pressure reduction control automatic, continuous, precise and eliminates phenomenon of vibration of the rolling mill stand, abnormal action of the reduction and loop, hydraulic pipeline and equipments easy to be damaged, ensuring safe production and equipment, the special steel rolling method controlled by the computer realizes producing automation, product with high quality, rolling mill with safety, the new steel rolling method is technique independent innovation and improves technique and lever of rolling the special steel.

The present invention relates to a rubber injection moulding machine energy-saving control system. It includes frequency converter drive motor, liquid pressure and flow rate sensor, temperature sensor and power supply circuit. Its energy-saving control system is formed from monitoring controller, technological process control module, temperature sampling and control module and frequency converter drive control module. Said invention also provides the working principle and operation method of said system.

The invention relates to a friction pressure loader of linear friction welding machine, wherein it uses computer to output one group of one-way vibration signals with same frequency, amplitude as vibrant sine signal, but pi/2 phase shift; uses DA output plate to convert it into analogue signal; uses amplifier to V/I convert and amplify; controls servo valve to cylinder piston horizontally move repeated to generate pulp. The invention also discloses a relative loading method, which comprises that: using sine signal to control the vibration servo valve; using one-way vibration signal to control the moving servo valve, to generate friction pressure between work-piece and moving work piece into pulp; therefore, it can reduce driving force.

Disclosed are a concrete distributing device and a control method, a control system and an electrical control system for composite motion of a boom thereof. The control method comprises the steps as follows: calculating the flow of a boom pump when an operating handle sends a command; according to the command sent by the operating handle, calculating theoretical demand flow of all actuating mechanisms of the boom and theoretical control signals of all electronic proportional control valves; comparing the total theoretical demand flow of the actuating mechanisms with the flow of the boom pump; providing the theoretical control signals to all the electronic pro portional control valves when the flow of the boom pump is greater than or equal to the total theoretical demand flow of the actuating mechanisms, otherwise, providing actual control signals smaller than the theoretical control signals to all the electronic proportional control valves and reducing the movement speeds of all the actuating mechanisms proportionally. In this way, when undersaturation of system occurs to the composite motion of the boom, the movement speeds of all the actuating mechanisms are reduced proportionally independent of the load difference of the actuating mechanisms, thereby ensuring that the boom can move in a motion track expected by an operator.

The invention relates to a method for controlling the driving engine (M) and hydraulic pumps (PUMP1, PUMP2) of a hydraulic machine (10), the method comprising: —driving at least one hydraulic variable displacement pump (PUMP1, PUMP2) that supplies pressurized medium to the hydraulic system of the machine by the driving engine (M), —determining the working pressure pi, p2) and volume flow (Qip, Q2p) output from at least one hydraulic pump (PUMP1, PUMP2), —determining the torque (T-ip, T2p) required of at least one hydraulic pump (PUMP1, PUMP2) or the total torque (Tpk0k) required by two or more hydrau¬lic pumps (PUMP1, PUMP2) by means of the working pressure (p-i, p2) and volume flow (Qip, Q2p) of pressurized medium output from at least one hydraulic pump (PUMP1, PUMP2), as well as the rotation speed (i) of the driving engine (M); —controlling the rotation speed (i) of the driving engine (M) and the dis¬placement (V1p, V2p) of at least one hydraulic pump (PUMP1, PUMP2) auto¬matically so that the torque (Td, Tdeff) produced by the driving engine approaches the torque (Tip, T2p) required by at least one hydraulic pump (PUMP1, PUMP2) driven by the driving engine (M), or the total torque (Tpk0k) of two or more hydraulic pumps (PUMP1, PUMP2) in such a way that the volume flow (Q1p, Q2p) produced by at least one hydraulic pump (PUMP1, PUMP2) will remain unchanged. The invention also relates to a system for controlling the driving engine (M) and hydraulic pumps (PUMP1, PUMP2) of a hydraulic machine (10), as well as a pile driving rig comprising the system according to the invention.

A method is provided, the method including: repeatedly acquiring a state of one or more devices included in the semiconductor manufacturing apparatus; providing a first animation indicating an operation of the semiconductor manufacturing apparatus by displaying at least an image indicating the state of one or more devices on a display unit each time the state is acquired; storing, in a memory, the acquired state of one or more devices and a time related to the state; receiving an input for switching a display mode; and providing a second animation of the semiconductor manufacturing apparatus by displaying, one by one on the display unit, at least one or more images respectively indicating the state of one or more devices related to one or more times including a reference time stored in the memory, after receiving the input for switching a display mode.

Many operators choose not to utilise partial-stroke testing arrangements even when the equipment required for it to be performed is available, due to a perceived risk of over-travel and/or spurious trip. To alleviate this, we describe a safety valve system comprising a valve operable to move between an operating state and a safe state, a valve actuator operatively connected to the valve to control its state, and including a bias toward the safe state, a pair of drive members powered by a pressure media, each acting against the bias to urge the valve toward the operating state, a first control valve arranged to selectively convey pressure media to both drive members and to withdraw supply on receipt of a safety trigger, and a second control valve arranged to selectively convey pressure media to one drive member only of the pair and to withdraw supply on receipt of a test signal. In this way, a partial stroke test is possible via the second control valve, but the other drive member of the pair will remain active thus acting as a buffer that prevents excessive movement of the valve.

A feedback control apparatus includes: a detector configured to detect an output value based on a controlled object; a P control circuit including a differential amplifier circuit and an analog circuit, the differential amplifier circuit being configured to receive a detection value of the detector and a target value, the analog circuit being configured to output a P control component V_P to an output of the differential amplifier circuit; an I control unit configured to output an I control component V_I by integrating a deviation of the detection value from the target value by digital processing; and a driver element configured to be driven based on the P control component V_P from the P control circuit and the I control component V_I from the I control unit to control the controlled object.

A system for mounting an annular component on a shaft, comprising (a) a hydraulic nut having an annular coaxial cavity and a ring-like piston, displaceable within the cavity; (b) a displacement sensor for providing a displacement signal indicating the axial displacement of the piston within the cavity; (c) a wireless displacement transmitter for transmitting the displacement signal; (d) a pressure sensor for providing a pressure signal indicating a pressure within the cavity; (e) a wireless pressure transmitter for transmitting the pressure signal; (f) a pump arranged to pump fluid into the cavity; and (g) a remote control device having a communications device arranged to receive transmitted pressure and displacement signals, wherein the remote control device is arranged to output control information for controlling the pump.

A digital positioner for a valve includes a valve controller configured to obtain a set point value for a valve travel of a valve, and generate a pulse-width modulated current signal based on the set point value. The digital positioner also includes a current-to-pressure converter configured to receive the pulse-width modulated current signal from the valve controller, convert the pulse-width modulated current signal to a pulse-width modulated pressure signal, and provide the pulse-width modulated pressure signal to a pneumatic actuator in the valve to adjust a position of the valve.

The invention discloses a rapid and automatic arrangement and control container type weapon station and a load platform control method. The rapid and automatic arrangement and control container type weapon station comprises a box body and further comprises a hydraulic lifting tower, a weapon, an electrical control system and a hydraulic system which are arranged in the box body. The top of the boxbody is provided with an upper opening type top cover controlled by a top plate oil cylinder. The hydraulic lifting tower comprises a lifting support and a tower body oil cylinder, and the weapon isarranged on a load platform on the top of the lifting support. The electrical control system controls a top cover opening and closing hydraulic subsystem and a tower body lifting hydraulic subsystem to work, the tower body oil cylinder and the top plate oil cylinder are made to act, and top cover opening and closing and lifting support lifting are achieved according to the set sequence. A container is adopted as a platform assembly, rapid ascending and descending of the automatic weapon station platform are achieved through an external power system or standby power system, the deploying/hidingtime is short, the height of the automatic weapon station platform can be increased to several meters to tens of meters according to needs, the weapon target observing, obtaining and firepower effects are improved, and the protection level of a protected object is obviously improved.