59results about How to "Avoid compensation" patented technology

The invention discloses a two-dimensional and three-dimensional integrated imaging measurement system, which is characterized by being composed of an astigmatism automatic focusing unit, a light source unit, a Linnik interference unit and an image receiving unit. According to the two-dimensional and three-dimensional integrated imaging measurement system, disclosed by the invention, a fixed system framework is used for integrating a plurality of advanced imaging technologies so as to efficiently meet various precise measurement requirements; the two-dimensional and three-dimensional integrated imaging measurement system is mainly applied to testing of two-dimensional geometrical parameters of a micro-part structure, detecting of the machining, the quality and the surface appearance of MEMS (Micro-electromechanical Systems), IC (Integrated Circuit) and optical micro-devices, and medical measurement of biological tissues and the like.

Active Force measuring device for measuring a force impact onto a ferromagnetic object comprising a flux concentrator having a first and second ends facing the ferromagnetic object to me measured, a magnetic field generation coil arrangement being wound around the flux concentrator, wherein the magnetic field generating coil arrangement is adapted for generating a magnetic field having a main generating direction between the first end and the second end, and a magnetic field sensing arrangement, wherein the magnetic field sensing arrangement is arranged between the first end and the second end.

A system and method for simultaneously acquiring PET and MR data from a subject of interest with a hybrid PET-MR scanner includes monitoring transmission times of RF and gradient coils of the MR equipment and blanking segments of the PET data stream accordingly. By excluding PET data acquired during active MR transmissions, the remaining PET data used for image reconstruction will provide improved PET image quality.

The invention discloses a normal displacement and angle sensing optical measuring head and a measuring method thereof, optical measuring head laser light which is sent out by a semiconductor laser sequentially passes through a spectro-grating, a spectroscope and a reflecting mirror to be collimated into the collimated light beam, and the collimated light beam is reflected via a right-angle prism to enter a microobjective; the light beam which is reflected by an object to be measured returns back according to the same way to the spectroscope, and then is focused on a four-quadrant detector through an astigmatic lens; and laser light which is sent out by an infrared laser light source sequentially passes through a light guide optical fiber, a collimating lens and a focus lens to be focused on an infrared reflecting mirror to form a focus point which is superposed with the front focus of the microobjective, the infrared laser light is vertically reflected into the microobjective through the infrared reflecting mirror, the parallel infrared laser beam which is exited from the microobjective is reflected to the microobjective through the object to be measured, and an infrared beamsplitter reflects the returned infrared laser beam onto a two-dimensional phase-sensitive detector (PSD). The measuring head and the measuring method thereof can be effectively used for geometrical error measurement and calibration of the three freedom degrees of a linear guide rail, surface topographic reconstruction of a free-form surface and the like.

The invention provides a water abrasive drilling construction method for a manual hole digging pile, and belongs to the field of pile foundation construction methods. An explosion technology can be prevented from being adopted, a free face is formed through water abrasive drilling, and the defects that hole wall damage is caused by explosion and the hole diameter is not likely to be controlled are effectively avoided. The water abrasive drilling construction method comprises the steps of wellbay construction, pile foundation digging and the like, and water abrasive drilling construction is adopted when pile hole digging is carried out in intensely weathered and intermediary weathered rock strata. The water abrasive drilling construction method can be used in construction of the manual hole digging pile.

A fabrication process of a stepped circuit board, comprises the following steps of: A) cutting a circuit board substrate, printing patterns on an inner layer thereof, performing etching, stepped groove grinding, washer milling, brownification and lamination processing on the inner layer, and then drilling holes on an outer layer thereof; B) depositing copper on the outer layer of the circuit board substrate with drilled holes, and then electroplating the entire circuit board substrate; C) performing pattern transfer; D) performing pattern copper plating on the circuit board substrate, and grinding the shape of a connecting piece (SET) on the circuit board substrate, and then etching the outer layer; E) printing a solder mask and texts in a silk-screen manner; F) depositing nickel immersion gold on the entire substrate, then printing characters in a silk-screen manner; and G) testing and inspecting the electrical performance and appearance of a finished board.

Transoral obesity treatment devices and related methods for operation thereof are described which occupy space within a stomach and/or stimulate the stomach wall. The transoral obesity treatment devices and related methods are intended to assist a patient in maintaining a healthy body weight. Features of the devices include insertion transorally and without invasive surgery, without associated patient risks of invasive surgery, and without substantial patient discomfort. The life span of these devices may be material-dependent upon long-term survivability within an acidic stomach, but is intended to last one year or longer. The devices have the capacity to vary in size and are desirably self-actuating in that they change shape and/or volume using internal motors or actuators. The changing character of the devices helps prevent the person's stomach from compensating for the implant, such as sometimes happens with static intragastric devices.

The invention aims to provide a method for suppressing the neutral current of a transformer. In the method provided by the invention, a neutral current suppression model is constructed aiming at the influence of a compensation range of reactive power compensation on compensation effects based on the relation among interphase reactive power compensation, relative reactive power compensation and the second side current and load side current of the transformer by leading an optimization theory; and on the premise of ensuring the stability and reliability of compensation, the neutral current suppression is realized by setting constraint conditions and target function weight coefficients in the model. The method provided by the invention determines the optimal reactive power compensation quantity by solving the neutral current suppression model, thereby enabling the compensation effects and the reactive power compensation configuration to be optimal.

The present invention discloses a duty ratio correcting circuit. The circuit comprises a first signal input end, a second signal input end, a first phase inverter, a first phase interpolator, a second phase inverter, a second phase interpolator, a first capacitor, a third phase inverter, a second capacitor, a fourth phase inverter, a first signal output end and a second signal output end. The input signal of the second signal input end is reverse in phase to the input signal of the first signal input end. The first phase inverter is connected with the first signal input end. The first phase interpolator is connected with the first signal input end. The second phase inverter is connected with the second signal input end. The second phase interpolator is connected with the second signal input end. The first capacitor is connected with the first phase interpolator. The third phase inverter is connected with the first phase interpolator. The second capacitor is connected with the second phase interpolator. The fourth phase inverter is connected with the second phase interpolator. The first signal output end is connected with the third phase inverter. The second signal output end is connected with the fourth phase inverter. The phases of higher harmonics are regulated by the first phase interpolator and the second phase interpolator and amplified to a full swing by the third phase inverter and the fourth phase inverter. According to the technical scheme of the invention, the problems of loop stability and loop compensation can be avoided.

A stereoscopic display method includes generating a left-eye crosstalk parameter according to left-eye image data and right-eye image data; generating a right-eye crosstalk parameter according to the left-eye image data and the right-eye image data; generating calibrated left-eye image data according to the left-eye image data, the right-eye image data, the left-eye crosstalk parameter, and the right-eye crosstalk parameter; generating calibrated right-eye image data according to the left-eye image data, the right-eye image data, the left-eye crosstalk parameter, and the right-eye crosstalk parameter; and displaying the calibrated left-eye image data and the calibrated right-eye image data on a display apparatus.

The invention relates to a pixel circuit, a driving method thereof and a display device, the pixel circuit comprises an initialization sub-circuit, a write-in sub-circuit, a first light-emitting control sub-circuit, a second light-emitting control sub-circuit and a driving sub-circuit, the initialization sub-circuit provides signals of an initialization signal end for a first node and a second node under the control of a first scanning signal end; the write-in sub-circuit provides a signal of a data input end for a third node under the control of a second scanning signal end, and stores a voltage between the third node and a fourth node; the first light-emitting control sub-circuit controls a fourth node and a fifth node to be conducted under the control of a first light-emitting control signal end; the second light-emitting control sub-circuit provides a signal of a first power supply voltage end for a fourth node under the control of a second light-emitting control signal end, and controls the first node and a third node to be conducted; and the driving sub-circuit performs voltage compensation on the fifth node under the control of the first node and generates a driving currentfor driving the light-emitting element to emit light. According to the invention, the uniformity of the display image is improved.

The invention discloses a hand fine motion ability testing and training device, which is composed of an arm bracket, a hand bracket, a force sensor, a programmed resistance source, a control box, a supporting table top, evaluation analysis software and the like. During testing, in order to prevent action compensation, an arm of a subject is tied to the arm bracket and a palm is tied to the hand bracket, a single finger or multiple fingers of the subject autonomously pull the knot at the stress application tail end and the wrist rotates leftwards and rightwards to obtain change signals of the force sensor, an angle sensor and traction rope length respectively, and the change signals are transmitted to the evaluation analysis software and can be used for quantitatively evaluating the motionability of wrist joints and finger joints of the subject, so that evaluation of the hand fine motion ability test is achieved. During rehabilitation training, a subject does actions with the same testposition, and the resistance output by the resistance source is adjusted, so that the finger joints and the wrist joints of the subject receive different degrees of resistance in the motion process,and the resistance training effect is achieved.

The present invention belongs to the orifice plate gas flow measurement technical field and relates to a high-pressure orifice plate gas stagnation temperature control device and method. The control device is a temperature control gas tank; a temperature control gas tank inlet flange is externally connected with the outlet of a gas source; a front porous rectifying plate is clamped to a temperature control gas tank wall through a temperature control gas tank inlet expanding type clamp plate flange by means of bolts; electric heating rods are fixedly clamped to a rear porous rectifying plate through the front porous rectifying plate; line collection rings are located on the rear porous rectifying plate; electrode springs are clamped between electric heating rod inner electrodes and external electrodes; the external electrodes are embedded in insulating materials; the insulating materials are embedded in metal plugs; the metal plugs are welded to ball head-taper surface sealing structures; the ball head-taper surface sealing structures are welded to the temperature control gas tank wall; and outer periphery flow guiding holes and inner periphery flow guiding holes are located on the rear porous rectifying plate. With the high-pressure orifice plate gas stagnation temperature control device and method of the invention adopted, gas temperature at the inlet of an orifice plate can be effectively compensated in a certain range, the accuracy of key parameter measurement participating in the calculation of the discharge coefficient of the orifice plate can be ensured, and the accuracy of the calibration of the discharge coefficient of the orifice plate can be improved.

The invention discloses a physical training device used for physical education. The physical training device comprises a frame plate; the frame plate is a cuboid shell plate with the upper end and thelower end being open; a base is fixed to the lower end face of the frame plate; a side plate is fixed to the side face of the lower end of the base; and a stud hole is formed in the middle of the side plate. The physical training device used for physical education is simple in structure and convenient to use, force plates are overturned along hinging seats, thus a sliding plate and an abutting plate are supported through idler wheels, the abutting plate is supported in a downwards pressed mode by arm power, the abutting plate can support the chest, and thus damage, caused by falling during exhaustion, to a body is avoided; the horizontal positions of the hinging seats can be adjusted so as to change the length of a power arm to adjust the magnitude of force applied to holding handles; andthe physical training device is suitable for student users of different physiques and arm power, push-up training is assisted to be conducted, students are assisted in regulating the push-up action,other muscle compensation is avoided, and the physical training effect is improved.