48results about How to "Timely compensation" patented technology

The invention provides a geometry / thermal error online measuring and compensating system for a numerical control machine tool, and belongs to the technical field of error testing and compensating of the numerical control machine tool. The geometry / thermal error online measuring and compensating system for the numerical control machine tool comprises a hardware platform and measuring and compensating software. The hardware platform comprises a one-way acceleration sensor, a digital IC-type high-precision temperature sensor, a multi-channel temperature data collector and a geometry / thermal errormeasuring and compensating host. The measuring and compensating software operates in the geometry / thermal error measuring and compensating host to achieve geometry / thermal error measuring and compensating of the machine tool and is in communication with an FANUC numerical control system. The system has the advantages that rapid and efficient testing of geometry errors is achieved through the acceleration sensor, an expensive special instrument is not needed, and geometry and thermal errors can be subjected to online real-time compensation at the same time.

The invention discloses a heaving-prevention retrusive deep-hole grouting system and method for passing through an existing shield tunnel. The problem that soil above a mining method excavation section tunnel is likely to heave when an existing structure is passed underneath is solved. The heaving-prevention retrusive deep-hole grouting system is characterized in that a pre-excavation mining method underground excavation underneath passing section interval tunnel (3) is arranged below the existing shield tunnel (1), an excavated section civil air defense section tunnel (4) is arranged at the left end of the pre-excavation mining method underground excavation underneath passing section interval tunnel (3), deep-hole grouting holes (16) are densely distributed on an upper pilot tunnel excavating face (15) of the pre-excavation mining method underground excavation underneath passing section interval tunnel (3) in the excavated section civil air defense section tunnel (4), a drill rod and a grouting casing pipe of a retrusive deep-hole grouting machine are arranged in each deep-hole grouting hole (16), the grouting pressure of the retrusive deep-hole grouting machine is 1-1.5 MPa, and grouting fluid in the retrusive deep-hole grouting machine is modified water glass. On-site existing equipment is utilized, and it is ensured that the existing shield tunnel does not heave.

The invention provides an on-line measurement and compensation system for the geometric / thermal error of a numerical control machine tool, belonging to the technical field of error testing and compensation of a numerical control machine tool. The online measurement and compensation system for geometric / thermal error of CNC machine tools includes two parts: hardware platform and measurement and compensation software. The hardware platform includes a unidirectional acceleration sensor, a digital IC type high-precision temperature sensor, a multi-channel temperature data collector, and a geometric / thermal error measurement and compensation host. The measurement and compensation software runs in the geometric / thermal error measurement and compensation host to realize the test and compensation of the geometric and thermal errors of the machine tool, as well as communicate with the FANUC CNC system. The invention has the advantages of realizing fast and efficient testing of geometric errors through the acceleration sensor without requiring expensive professional instruments, and can simultaneously perform online real-time compensation for geometric and thermal errors.

The invention relates to a 10kV distribution network. The 10kV distribution network has a 10kV low-voltage intelligent distribution network system with a reactive power compensation function, including a terminal part, a computer part, a communication part, and a monitoring part. It is characterized in that: The terminal part includes a feeder automation terminal, a distribution transformer detection terminal, a ring main unit, and a switching station; the computer part includes a network workstation, an application server, a front server, a firewall router, and a shared printer; the communication part includes MSTP equipment , Ethernet switch, EPON; the compensation part is composed of a current transformer, a voltage transformer, a switching power supply, a signal conditioning circuit, a capacitor switching control device, a photoelectric coupling device, a main control device, a data storage device and an AD conversion circuit, The data output by the main control device is uploaded to the data bus, and the data is received, stored, analyzed and processed by the power distribution management workstation.

The invention discloses an air-floating spindle rotation error detection and compensation device and method based on the principle of reflection. At present, the rotation error of air bearings is mainly compensated by weight type or spring type, which cannot realize real-time detection and accurate compensation. The invention includes an intake pressure control valve, an auxiliary measurement reflection table, a laser emitter, a radial air bearing and a measurement sensitive element; when the laser reflection emitted by the laser emitter is not at a predetermined position on the corresponding measurement sensitive element, the controller Determine the rotary motion error of the air bearing spindle, record the number of each measurement sensitive element that has not received the laser at the predetermined position, and control the corresponding intake pressure control valves to adjust the intake pressure, and then adjust the corresponding intake area of ​​the radial air bearing The gas pressure compensates the motion accuracy of the air bearing spindle in the corresponding direction. The invention adopts the principle of optical measurement, and can realize real-time and on-site detection of the rotation error of the main shaft, with more accurate detection and more accurate compensation.

The invention discloses a facility and method for preventing peripheral settlement of an intake tower from causing geomembrane damage. The facility comprises a grouting device and a settlement amountdetection device. The grouting device comprises a grouting machine, a grouting main pipe and multiple grouting branch pipes. The grouting main pipe is vertically arranged in the intake tower, the topof the grouting main pipe stretches out of the intake tower and is connected with the grouting machine, and the multiple grouting branch pipes are arranged at the bottom of the grouting main pipe in aradial shape. The settlement amount detection device is used for detecting the settlement amount of a reservoir around the intake tower and comprises an ultrasonic transceiver and a reflection plate.By means of the facility and method, the settlement amount detection device monitors differential settlement of a foundation around the intake tower regularly, once it is found that the settlement difference exceeds the allowable value, the grouting device carries out grouting on the settlement area in time, and differential settlement is eliminated; and if it is found that large settlement happens to the foundation again, the settlement area can be subjected to grouting repeatedly, and the problem of pulling destroying caused by too large geomembrane deformation due to foundation differential settlement around the intake tower is thoroughly solved.

The invention discloses a power saving device for dynamically filtering harmonic wave, the device comprises a case and a power saving device body arranged in the case, the power saving device body comprises a control unit, a safety protection device, a by-pass control unit, a sampling unit, a surge treatment device and a switching control key which is arranged on external of the case and is used for manually switching by-pass / by-pass in power saving state. According to the invention, the power saving device can timely detect harmonic wave content in a power grid through a detection device of the power saving device, precise compensating current is outputted through a feedback system to the power grid, so that the harmonic wave in the power grid is eliminated, the power saving device comprises the by-pass control unit, the by-pass / power saving switching can be controlled by controlling actuation of contactor group, the power grid harmonic wave is managed, and the surge can be effectively restrained and the voltage can be effectively stabilized.

The invention discloses an energy saving device and method for dynamically filtering harmonic. The energy saving device comprises a cabinet body, wherein an installation partition plate is arranged at a middle part of the cabinet body, a support plate is arranged at an upper side of a front surface of the installation partition plate, a wiring device is arranged at one side of the front surface of the support plate, a wiring end of the wiring device is connected with a wire a, the other end of the wire a is connected with an acquisition unit, a bypass control unit is arranged at a lower side of the acquisition unit, a wire c is connected with a lower part of the bypass control unit, the energy saving device is connected with the other end of the wire c, and an integrated control unit is arranged at one side of the acquisition unit and comprises a control chip. By the energy saving device, a harmonic component in a power grid can be timely detected by the detection device, an accurate compensation current is output and injected to the power grid by a feedback system, so that the harmonic in the power grid is eliminated; and meanwhile, the device is provided with the bypass control unit, the switching of bypass / energy saving is controlled by controlling suction of a contactor group, the surge can be effectively suppressed and the voltage is stabilized as well as the harmonic of the power grid is handled.

The invention discloses a swinging two-way spraying device for agricultural planting, which comprises a bottom plate, a plurality of moving wheels are arranged on one side of the bottom plate, and a medicine storage barrel is fixed on the side of the bottom plate away from the moving wheels, and the storage barrel A stirring device is provided inside the medicine barrel, and a water pump is provided on one side of the bottom of the medicine storage barrel, and one end of the water pump is connected with the medicine storage barrel through a communication pipe, and the other end of the water pump is provided with a water outlet pipe, The other end of the outlet pipe is connected to the hose, and the end of the hose away from the outlet pipe is connected to the middle of the horizontal pipe. Both ends of the horizontal pipe are symmetrically provided with nozzles. Both sides are provided with fixed rods, and the fixed rods are connected with the rocking device, and the rocking device includes a support plate. Beneficial effects: can realize swinging spraying, and can spray on both sides at the same time, can improve work efficiency, reduce labor intensity of staff, can realize the process of spraying while stirring, and can make the mixing between water and pesticide even.