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176results about How to "Reduce debugging" patented technology

Steering control method and device of intelligent vehicle

The invention discloses a steering control method and device of an intelligent vehicle. The method comprises: step 1, collecting driving information, expected path information and obstacle information from the vehicle; step 2, according to the information collected in the step 1, selecting a minimum preview distance and a maximum preview distance; step 3, according to the minimum preview distance and the maximum preview distance, determining a current preview distance and a current preview point corresponding to the current preview distance; step 4, according to the current preview point and vehicle information, generating a double-circular-arc synthetic curve; step 5, according to the double-circular-arc synthetic curve, determining a front wheel expected rotating angle; step 6, judging whether the double-circular-arc synthetic curve meets a safety driving principle or not; if so, determining the front wheel expected rotating angle as a final front wheel expected rotating angle; otherwise, returning back to the step 3. The steering control method and device of the intelligent vehicle, provided by the invention, can be used for controlling the vehicle to steer according to the double-circular-arc synthetic curve; finally, the direction of the vehicle is the same as that of an expected path.
Owner:BEIJING ZHIXINGZHE TECH CO LTD

Automatic calibrating and compensating method of onboard mounting deflection angle of strapdown inertial navigation system

ActiveCN102435206AAccurate compensation of installation deflection angleEliminates the need for precise mechanical alignmentNavigation by speed/acceleration measurementsSimulationMarine navigation
The invention belongs to an inertial navigation technology, particularly relates to an automatic calibrating and compensating method of an onboard mounting deflection angle of a strapdown inertial navigation system. By using the automatic calibrating and compensating method of the onboard mounting deflection angle of the strapdown inertial navigation system, designed by the invention, only one normal compass alignment and navigation is needed after a bracket of the strapdown inertial navigation system is firstly installed on an aircraft, the posture and the heading output by the strapdown inertial navigation system are compared with the reference posture and heading, and the coordinate system of the bracket of the strapdown inertial navigation system and the mounting deflection angle of an aircraft system are automatically calibrated and are stored in a storage unit of the strapdown inertial navigation system. The mounting deflection angle is precisely compensated in the normal working process of the strapdown system through designing a mounting deflection angle compensating algorithm in strapdown inertial navigation system software, and the requirement of the aircraft for the output display and control of the posture, the heading and other navigation parameters of the strapdown inertial navigation system is met.
Owner:FLIGHT AUTOMATIC CONTROL RES INST

Blowing pollinator and method for using same to carry out blowing pollination

The invention relates to the field of cross breeding, in particular to a blowing pollinator and a method for using the same to carry out blowing pollination. The blowing pollinator comprises a fan and an air guide; the air outlet of the fan is connected with the air guide, and the air outlet end of the air guide is connected with two air nozzles; each air nozzle is an adjustable air nozzle, and can adjust the angle between the jetted airflow and the horizontal plane; each air nozzle is perpendicular to the air outlet end of the air guide, i.e., the flowing direction is changed by 90 degrees after the airflow enters the air nozzle via the air guide; the two air nozzles respectively face up at the left and the right of the air outlet end of the air guide; and the fan is connected with a storage battery for supplying power and a flow velocity regulator for regulating the velocity of the airflow. The blowing pollinator and the blowing pollination method provided by the invention can utilize the airflow to directly blow the mature pollen of male parents into the air over a male parent area, the pollen then spontaneously falls to finish the pollination process, and thereby the setting rate of the cross breeding can be remarkably increased.
Owner:四川川龙拖拉机制造有限公司

Method and system for locally realizing automatic address allocation of RS485 slave equipment

The invention discloses a method and a system for locally realizing automatic address allocation of RS485 slave equipment. The method comprises the following steps that: host equipment selects one setof slave equipment to issue an address allocation instruction to the slave equipment; the slave equipment acquires the random number, waits for an interval, and returns the random number, the local number and the group number to which the slave equipment belongs; and the host equipment checks the random number and the local number, determines a group address and a local address after the random number and the local number are correct, and sends the group address and the local address to the slave equipment, and if the group address and the local address are correct, the next slave equipment of the to-be-processed group repeatedly executes the above steps until all slave equipment in the group are successfully allocated, and the next group is changed to repeatedly execute the above steps.The method is easy to operate and implement, the specific method process can be modified and cut according to the actual situation, localization can be truly achieved, background remote record checking is not needed, and on-site personnel debugging and background technician participation are reduced.
Owner:HAIFENG NAVIGATION TECH

Multi-phase and high-power generation-conversion integrated system and control method thereof

The invention discloses a multi-phase and high-power generation-conversion integrated system and a control method thereof. The multi-phase and high-power generation-conversion integrated system comprises a modular multilevel inverter and a multi-phase permanent magnet generator, wherein a three-phase structure is adopted by the modular multilevel inverter; each phase is formed by connecting an upper bridge arm and a lower bridge arm in series; each bridge arm is formed by connecting n sub-modules and a filter inductor in series; connection points of the filter inductors of the upper bridge arms and the lower bridge arms form output ends of the bridge arms of the corresponding phases to be connected to a public power network; each sub-module comprises a three-phase PWM rectifier, a capacitor and two series-connected IGBT tubes; 6n three-phase windings of the multi-phase permanent magnet generator are connected to AC ends of 6n three-phase PWM rectifiers of the modular multilevel inverter in a manner of one-to-one correspondence; and a DC output end of each three-phase PWM rectifier is connected with the corresponding capacitor in parallel and also connected with two ends of two corresponding series-connected IGBT tubes in parallel. The multi-phase and high-power generation-conversion integrated system has a modular structure design and a good control characteristic, and flexible connection between a power generation system and the power network is easy to implement.
Owner:湖南中聚福能源科技有限公司

Novel digital hydraulic servo cylinder

The invention provides a novel digital hydraulic servo cylinder. The novel digital hydraulic servo cylinder comprises a front end cover, a cylinder body, a piston rod, a screw rod, a slide valve core,sealing parts, a rear end cover, a motor seat and a motor, wherein the cylinder body is hollow and is provided with a cavity, the front end cover and the rear end cover are provided with center holescorrespondingly, the piston rod comprises a piston rod body and a piston head, the diameter of the piston rod body is slightly less than that of the center hole of the front end cover, the diameter of the piston head is slightly less than that of the cavity of the cylinder body, an inner hole of the slide valve core is machined with threads, the threads are matched with the screw rod to form a screw pair, an internal through hole of the screw rod communicates with an oil box through an oil return hole, the motor seat is fixed to the rear end cover, and the motor is installed to the motor seat. By means of the novel digital hydraulic servo cylinder, speed control and position control of a traditional complex hydraulic servo cylinder are changed into the simple minitype digital motor control, the one-to-one correspondence between digital pulse frequency and oil cylinder speed and the one-to-one correspondence between digital pulse total amount and cylinder stroke are realized, and the structure of the servo hydraulic cylinder is greatly simplified.
Owner:AEMETEC +1

Digital micromirror-based large dynamic laser far-field focal spot measurement system and measurement method

The invention belongs to the field of optics, and relates to a large dynamic far-field focal spot measurement device of a high energy laser system, particularly a digital micromirror-based large dynamic laser far-field focal spot measurement system and a measurement method thereof. The system comprises a focusing lens and a DMD digital micromirror. A light beam passing through the focusing lens is reflected by the DMD digital micromirror to generate a main-lobe light path and a side-lobe light path. A main-lobe imaging lens, a main-lobe attenuation slice and a main-lobe CCD detector are sequentially arranged in the light direction of the main-lobe light path. A side-lobe imaging lens, a side-lobe attenuation slice and a side-lobe CCD detector are sequentially arranged in the light direction of the side-lobe light path. According to the technical scheme of the invention, a DMD device is adopted to separate the main lobe and the side lobe of a far-field focal spot, so that the measurement system can be adjusted adaptively for different focal spot conditions. Therefore, the usage of a shielding ball is avoided, so that the stability and the flexibility of the measurement system can be greatly improved. Meanwhile, the debugging process can be effectively reduced, and the debugging difficulty is lowered. The debugging time is saved. The automatic monitoring and the automatic adjustment of far-field focal spots are achieved.
Owner:XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI

Special detection device for milk bottle

The invention relates to a special detection device for a milk bottle, and the detection device is used in a test for detecting the pull resistance and puncture performance of a nipple on the milk bottle. The detection device comprises a worktable, wherein a bevel gear I and a bevel gear II which are engaged with each other are arranged on the lower side of the worktable, the bevel gear I is horizontally arranged, the input end of the bevel gear I is connected with a torque motor, the bevel gear II is vertically arranged, and a screw rod shaft extending upwards is fixed at the gear shaft end part of the bevel gear II; a vertical guide rail is arranged on the upper side of the worktable, a horizontal lifting arm is glidingly connected to the vertical guide rail, an inner threaded hole in threaded fit with the screw rod shaft is arranged in the lifting arm, a force measurement sensor and a test head connected with the force measurement sensor are connected to the lower side of the lifting arm, the test head comprises a puncture head which is connected with the force measurement sensor through a standard threaded joint and is used in the puncture test, and a clip used for clamping the nipple in the pull-resistant test; the force measurement sensor is connected with a controller; the controller is connected with the torque motor; a special tool used for clamping the milk bottle is arranged on the worktable on the lower side of the test head.
Owner:江苏出入境检验检疫局轻工产品与儿童用品检测中心 +1

Microwave four-frequency power divider

InactiveCN104022334AThe working frequency can be set arbitrarilyBandwidth adjustableCoupling devicesImpedance transformerEngineering
The invention discloses a microwave four-frequency-band power divider and belongs to the field of multi-frequency power dividers. The four-frequency power divider comprises an isolation resistor and two four-frequency impedance transformers of the same structure. Each four-frequency impedance transformer is formed by two sections of identical transmission lines and three pairs of combined stub lines. Each combined stub line is formed by two open-circuit stub lines which can be in parallel connection or two short-circuit stub lines which can be in parallel connection or an open-circuit stub line and a short-circuit stub line which can be in parallel connection. The two four-frequency impedance transformers of the same structure are in parallel connection, the isolation resistor is uploaded, and accordingly the four-frequency power divider is achieved. The two pairs of combined stub lines are respectively arranged on the two sides of the two sections of the transmission lines, and the other pair of the combined stub lines is arranged in the middle of the two sections of transmission lines. The four-frequency power divider is simple in circuit design, planar in distribution, low in cost and less in debugging. Furthermore, the four-frequency power divider can be achieved through PCB process in a microstrip circuit mode.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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