365results about How to "Reduce the cost of the whole machine" patented technology

The invention provides an intelligent controller used for a direct current (DC) frequency-conversion air conditioner compressor and a technical proposal of the control method thereof; the hardware proposal comprises a rectifier filter circuit and a power module which are electrically connected sequentially; the rectifier filter circuit (220) is also electrically connected with a single DSP controller used as a core processing unit by a switch power supply (240); the single DSP controller is also respectively and electrically connected with the power module, a communication isolation circuit which is used for communicating with the indoor machine of the air conditioner, a fan driving circuit (280), and a temperature sampling circuit (270); the control method comprises the steps as follows:the control software is embedded in the DSP controller; by a control type of dual close-ring FOC no-sensor magnetic field vector, the current ring at the internal ring realizes the decoupling controlto the driving current of the permanent magnetic synchronous motor of a compressor and indirectly controls the output torque of the motor; the speed ring at the external ring is used for controlling the working frequency of the compressor, thus not only meeting the stable requirement during fixed frequency but also meeting the dynamic response during the frequency conversion; and the control software comprises a primitive recursive function and a main interrupt function.

Embodiments of the invention provide new fittings and fitting assemblies for tight, leak-proof filter and fluid connections in a pump useful in dispensing fluid onto wafers during a semiconductor manufacturing process. One embodiment of a fitting assembly comprises an o-ring-less low profile fitting and a low profile male threaded locking nut. A manifold of the pump is machined with a female threaded hole for receiving the fitting and the locking nut. The fitting has higher compressibility than the manifold. Initially, as one end of the fitting touches the bottom of the receiving hole, there is a small gap between the end of the fitting and the bottom of the receiving hole. As the fitting is pressed down, the end of the fitting that touches the bottom of the receiving hole begins to deform and fill the small gap, thus creating a tight seal between the fitting and the manifold.

A mobile banking and anti-theft tag based portable checkout terminal, checkout system and checkout method for a retail environment are disclosed. A portable terminal accessory is designed for a portable terminal to acquire the article information related to the selected article that a customer in a retail environment wishes to purchase. The portable terminal is connected to the portable terminal accessory to receive the article information via scanning a tag attached to the article and to conduct the checkout processing with a customers bank through wireless communication.

The invention relates to a movable parallel wire driven lower limb rehabilitation robot and an implementation method thereof. The robot comprises a suspension weight reducing unit, a tension sensor, safety straps, a safety handrail, a spring, a door fence, wire driving units, universal driven wheels, a leg wearing device, a treadmill, rear driving wheels, wires, a supporting frame and a liquid crystal display screen. The whole robot is of a truss structure formed by the supporting frame, and the suspension weight reducing unit on the upper portion is connected with the safety straps through the wires; the movement of the waist of a patient is constrained through four groups of springs between four vertical beams on the left and on the right and between the safety straps; the liquid crystalscreen is arranged above the safety handrail on the front portion of the robot; the patient and a wheelchair enter and go out through the left door fence; four cross beams at corresponding positionsof an affected limb sagittal plane on each side are provided with the four wire driving units; the affected limb is driven for rehabilitation training by pulling the leg wearing device through the wires; the universal driven wheels are installed on the front portion of the bottom of the robot, and the rear driving wheels are arranged on the rear portion of the robot. The robot can achieve gait training and walking training in passive, power-assisted and active modes.

The invention discloses a platform type auxiliary rehabilitation training device for a hemiplegic finger of a patient. The auxiliary rehabilitation training device for the hemiplegic finger of the patient comprises a finger training mechanism, a hybrid driving mechanism, a sensing device and a control system, wherein the hybrid driving mechanism comprises a motor and a magnetorheological fluid damper, the finger training mechanism comprises a slider-crank mechanism and a finger moving device which can rotate freely and slide forwards or backwards under the driving of the slider-crank mechanism, the control system comprises an upper computer and a lower computer, the PID control algorithm is configured in the lower computer, and a virtual scene module and a virtual reality feedback force module are arranged in the upper computer. By the adoption of the auxiliary rehabilitation training device for the hemiplegic finger of the patient, combination of active training and passive training can be achieved for the patient, the mechanical structure, the hybrid driving mechanism, the sensing device and the control system cooperate with one another to achieve man-machine interaction, a training process is controlled strictly, and the interestingness of the training process is improved by the adoption of game images.

An oil pan is provided below a crankcase of an engine. The oil pan has an oil reservoir in its upper case. An oil discharge pipe is located within the oil reservoir, the oil discharge pipe extending from an oil separator of a PCV system. The oil reservoir protrudes inward of an inner wall surface of a lower case. The oil reservoir has an oil drain hole on a bottom surface at its inwardly protruding portion. The oil reservoir communicates with a lower chamber through the oil drain hole.

A vise for holding more than one work piece on the support surface of a machine tool has a base for mounting on the support surface. More than one stationary jaws are fastened to the base. More than one movable jaws are slidably mounted on the base to move toward and away from the stationary jaws to securely hold at least one work piece between each pair of a stationary and a movable jaw. Movement of the each movable jaw is provided by a first mechanism that closes on the work piece snugly to accommodate minor variations in work piece dimensions. A second movement mechanism moves all of the movable jaws with great force including a spring bias to tightly clamp all of the work pieces at once with enough force to enable machine operations on the work pieces with no chance of their moving from the machining operations.

This power and safety control hub for overall power control, safety control and power distribution integrates fault tolerant power disconnect control, software monitoring of disconnect and multi-voltage power distribution and disconnect with non-hazardous power control, EMI filtering and multi-circuit current protection in a single unit. In addition, it implements electromagnetic, single fault tolerant, safety control circuits without using positively driven contact relays. It coordinates the shutdown of any connected mechanical drives such as servo motor drives, stepper motor drives and variable speed drives autonomously commanding them to come to a controlled stop before safety power is disconnected (when networked controls are used). It also integrates segmented hazardous power control (load/unload and main machine/equipment areas) so that the main area can be operating while the load/unload area has power disconnected. Further, it automatically discharges energy sources within connected mechanical drives at the time of safety power disconnect of hazardous power. It also utilizes a safety control and monitoring algorithm that automatically forces the test on e-stop switches and interlocks in a machine each time the machine is powered up or reset. In addition, it has a state driven safety control and monitoring algorithm that pinpoints wiring and device problems for rapid debug. It includes internal self-protection that automatically forces a control safety power disconnect (after warning the host) if the unit should approach its maximum operating temperature, or if a cooling fan stops. Further, it incorporates safety monitoring software for the synchronous de-bouncing of the interlock and e-stop switch inputs (as a vector) to eliminate false trips. It also integrates a comprehensive audible overcurrent trip indicator as well as individual visual overcurrent indicators in the power distribution system and an e-stop reset function into the machine on-off front panel switch. Finally, our power and safety control hub for overall power control, safety control and power distribution includes a “soft-off” circuit that automatically shuts off the machine when the power supply voltage to a host computer is shut down.

The invention provides a glass cleaning agent. The glass cleaning agent is prepared from potassium hydroxide, sodium hydroxide, potassium carbonate, an anion ion surfactant, a non-ionic surfactant, a chelating agent, an alcohol ester type organic solvent, a solubilizer and water. Compared with the prior art, the glass cleaning agent has the advantages that the alkalinity is weak, and the wetting property is strong; under the mutual matching of components, the surface of cleaned glass is smooth, stubborn dirt can be removed, the damage to a glass surface layer is avoided, a defective rework procedure is reduced, and the machine and labor cost and the material cost are effectively reduced; the fine scratching of the glass surface is reduced, the fuzziness and bluing of the glass surface are avoided, the surface can be quickly flushed and cleaned, the residue is avoided, the rinsing frequency is reduced, the components can be completely decomposed, the pollution to environment is avoided, and the glass cleaning agent is suitable for glass heat-bending mobile phone front and back cover plates.

A flange assembly, a coupling flange, and its assembling method thereof are disclosed. Stiffening plates (2) are located on the front side of the flange plate (1). Equilibrium contact surfaces (211) are set up on the front end surfaces of stiffening plates. The pressure stress bending moment created by the equilibrium contact surfaces offsets the pulling stress on the steel pipe wall and reduces the hoop stress of the steel pipe. This provides reliable bonding strength and ensures that the tensile rigidity remains unchanged under circulating dynamic load. This coupling flange is especially suitable for the connection of large-scale steel pipes such as the cylindrical pylons of large-scale wind power generators. The coupling flange can save steel consumption, reduce machining difficulty, and thus greatly reduce the manufacturing and assembling costs.

A circulating system for a linear guideway comprises a slide block, a slide rail, two cover plates, two end caps and plural rolling elements. The slide block is disposed on the slide rail. The two cover plates and the two end caps are disposed at two opposite ends of the slide block, respectively. Between the two cover plates and the two end caps are disposed inner return and outer return blocks, respectively, and the inner return and the outer return blocks each are defined with half rolling paths to form complete rolling paths. Both ends of a complete rolling path and both ends of a complete loaded path are connected to both ends of two complete return paths to complete circulation paths. The inner and outer return blocks are made by common plastic injection molding, and the formed rolling paths are made of plastic material.

The invention provides a fluoro-free extreme-pressure microemulsion cutting liquid, whose constituents by weight percentage include water 20-40, mixed alkylolamide 6-12, boracic acid 2-6, sulfonates rust-preventing agent 8-12, auxiliary agent 1-5%, anionic surface active agent 8-12, polybasic alcohol 2-6, sulfurized grease 4-10, mineral oil 15-30, benzotrizaole 0.1-0.3. The invention also provides a process for preparing the liquid.

The invention discloses a series-parallel water jet carving robot with six degrees of freedom. The robot comprises a mount, a vertical column component, a lifting device, a rocker with six degrees of freedom, a parallel cutter rack with three degrees of freedom and a jet carving device, wherein a water tank is arranged in the mount, the rocker can move upwards and downwards along the vertical column under the driving of the lifting device; and the parallel cutter rack with three degrees of freedom sleeves the rocker with two degrees of freedom and can translate along the rocker with two degrees of freedom; a spraying gun in the jet carving device is arranged on the parallel cutter rack and has six spatial movement degrees of freedom. According to the carving robot, the processing operations such as blanking and cutting, carving, chamfering, routing and trimming of an acrylic product can be realized; the action force of the robot during carving operation is small; a work piece is low in temperature and keeps the shape; the influence of the acrylic material bonding on a cutter or the work piece to the precision and quality of the work piece can be avoided; and the robot further has the advantage of being compact in device structure, stable and reliable in work, convenient and fast to operate and maintain, low in entire machine cost and high in processing precision.

Provided is a process for dry, solvent free, transfer of solid material onto a flexographic plate.

Disclosed in the invention is an apparatus for calibration of a laser triangulation system. The apparatus comprises a rotating platform, a top pin and a calibration cylinder; the calibration cylinder is fixedly arranged above the rotating platform; and the top pin is compressed at the upper surface of the calibration cylinder. In addition, the invention also discloses a calibration method for using the calibration apparatus. The calibration cylinder with a slit and checkerboard calibration boards is used as a tool; and on the basis of six steps, a slit image, a calibration board image and a laser image are collected and calculated in real time and whether the system calibration meets the preset requirement is determined. And at last, an imaging plane of a camera is in parallel with a reference plane; and an intersecting line of the laser and the reference plane is intersected with and is perpendicular to an optical axis of a lens. The provided method is simple and effective and can be mastered by an operator easily. Moreover, the adjustment precision is high; accuracy of the laser triangulation system can be effectively ensured; and thus the method and the apparatus have the good application prospects in the non-contact three-dimensional high-precision measurement field.

In a method of manufacturing a fibrous formed product, a mixture of fibers, including thick fibers and thin fibers, is prepared in order to form fibrous mats. The mixed fibers are supplied onto an outer peripheral surface of a roller. As the roller rotates, the mixed fibers are released from the roller and are thrown toward a fiber receiving surface. A fibrous mat is formed on the fiber receiving surface with a low-density layer next to the fiber receiving surface and a high-density layer on top of the low-density layer. Thick fibers mainly form the low-density layer and thin fibers mainly form the high-density layer. First and second fibrous mats are overlaid with one another such that their low-density layers oppose each other.