31results about How to "Small error" patented technology

The invention discloses a conveniently overhauled crane carriage for a crane. A movable maintenance platform is arranged on the crane carriage. A crane carriage frame comprises two walking beams and a bearing beam which are arranged in an I shape. The two ends of each winding drum are arranged on two winding drum fixing bases respectively. A dedicated monitoring device comprises an installing frame composed of two fixed segments and a horizontal segment. A driving chain wheel, a driven chain wheel and a chain are arranged in the horizontal segment, a horizontal mobile platform is fixed to the chain, and a rotary mobile platform is rotationally connected to the horizontal mobile platform. According to the conveniently overhauled crane carriage for the crane, the crane carriage can be produced through a modularized assembling mode and has the advantages of being simple in structure, few in welding point and light in self weight, welding portions can be decreased effectively at the same time, and the situation that the errors of crane carriage wheel lines are too large due to welding deformation is avoided; in addition, whether the surface of a main beam has deformation or cracks or the working conditions of driving wheels and driven wheels can be monitored in real time through a camera, and meanwhile the overhauling efficiency is improved.

A concentration of a fuel supplied to a fuel cell and a heat exchange rate of a heat exchanger are controlled simultaneously in order to maintain a temperature of fuel cell stack and a diluted fuel concentration that is supplied to the fuel cell stack in a target level. Further, by appropriately responding to an exterior temperature changes or unexpected fuel cell performance changes, it is possible to improve a system efficiency and stability of fuel cell operation and to regulate the fuel concentration quickly and accurately compared to a prior sensor-less concentration controller.

Reception beamforming is executed using delay times that complexly vary in accordance with differences between transmission conditions. An irradiation area 32 of a transmission beam is calculated, and the lengths of segments, using which delay times are calculated, are set in accordance with the positional relationships between the calculated irradiation area 32 and reception scanning lines 31. For example, the reception scanning lines 31 are divided into areas A to C, and the lengths of segments 40b in the outer area B located outside of the irradiation area 32 are set shorter than the lengths of segments 40a and 40c in the inner areas A and C.

Reception beamforming that does not generate discontinuity in the vicinity of the depth of a transmit focus is executed even if reception scanning lines are disposed outside of the irradiation area of a focusing-type transmission beam. The degree of discontinuity showing the discontinuity of reception signals detected by plural ultrasound elements 105 or the degree of discontinuity regarding the discontinuity of the wave fronts of phased signals is detected by a discontinuity extracting unit 113. If there is an area where the degree of discontinuity is larger than a predefined value, a delay time generating unit 114 for discontinuity elimination changes the delay times in the area where the discontinuity is generated.

The invention discloses a method for testing the amplitude and phase of a TR module based on matrix gating. According to the invention, the method can noticeably reduce workload of test workers. The method is implemented by the following technical solutions: mounting a multipath matrix switch on a phased array radar antenna for receiving test signals, a frequency source inside a radar generating two paths of test signals, inputting a to-be-tested TR module and a feed branch through the matrix switch; a wave controller, according to a TR module receiving amplitude and phase testing command program by a radar terminal computer, superimposing amplitude and phase adjustment and frequency conversion information on the test signals, transmitting the test signals superimposed with the amplitude and phase information to a receiver connected thereto, the receiver transmitting the input signals to a signal processor connected thereto after conducting down-conversion and amplification on the input signals, the signal processor computing the amplitude values and the phase values of the test signals, the radar terminal computer comparing the actual amplitude values and the actual phase values with the theoretic amplitude value and the theoretic phase value, and determining whether the TR module and the feed branch are normal so as to acquire the phase shift and amplitude modulation error of the TR module. The aforementioned steps are continued until the completion of the testing of all TR assemblies and corresponding feed networks.

The subject of the present invention is to provide a blood purification device that can confirm whether or not a unique peak is provided by a blood concentration mechanism such as a water removal pump, and can reduce the parameters when calculating the ratio of recirculated blood, and is reliable and highly accurate. To detect blood recirculation. The blood purification device includes a blood circuit (1) composed of an arterial side blood circuit (1a) and a venous side blood circuit (1b); a blood pump (3); a dialyzer (2); Water makes the change of blood concentration have the water removal pump (8) of characteristic peak value; The patient's blood is sent to the arterial side blood circuit (1a) again to detect the recirculated blood flowing. The detection mechanism consists of the first detection mechanism (5a) arranged on the arterial side blood circuit (1a) and the first detection mechanism (5a) arranged on the venous side blood circuit. The second detection mechanism (5b) of (1b) constitutes.

A device for scaling and quantization of digital soft output values (sk) from an equalizer has a control loop for controlling a statistical parameter (θ) for the scaled and quantized soft output values (sD,k), which contains a calculation unit (4) for calculation of the statistical parameter (θ), and a control unit (5) for calculation of a scaling factor (c) for scaling the soft output values (sk) from the equalizer on the basis of the statistical parameter (θ).

The invention relates to a gas cutting series combined tool, which comprises a linear cutting device, a circular arc cutting device and a beveling cutting device, wherein a longitudinal trolley of the linear cutting device consists of a front slide block and a back slide block; the front slide block and the back slide block are symmetrically welded and fixed on the two ends of the lower side of the longitudinal center of an operation platform, and is arranged on a rail; weight balancing plates are symmetrically welded at the left side and the right side of the operation platform; balancing rolling wheels are arranged under the weight balancing plates through a support wheel and wheel shafts; the bottoms of the two balancing rolling wheels are in contact with a workpiece steel plate on the same horizontal plane; a left group of upright posts and a right group of upright posts used for positioning and fixing transverse cutting torches are arranged in the transverse center position on the operation platform; clamping screws and elastic clamp sheets used for fixing the transverse cutting torches are arranged on the upright posts; the rail is tightly clamped on the surface of the workpiece steel plate through magnetic blocks; a moving support frame and a supporting support frame are arranged at one side of the operating platform; the two sides of one end of the moving support frame are rotatably connected with the operation platform through pin shafts; the beveling cutting device is fixed on the operation platform of the linear cutting device.