9results about How to "Debug accurately" patented technology

The invention discloses a printed circuit board defect online full-automatic detection method and system based on data analysis, relates to the technical field of printed circuit board performance testing, and realizes comprehensive evaluation of circuit board performance through steps 1 to 4. By configuring a test system and setting test conditions, accurate installation and debugging of each test module are ensured; a power supply stability index Dyw, a power supply switching fault-tolerant index Qhrc, a thermal stress index Ryl, a mechanical stress index Mvz, an electromagnetic compatibility index Jrx, a resource contention index Zyzq and a self-repairing index Xfz are calculated, a comprehensive evaluation index Pc is obtained through associated calculation, performance evaluation is carried out, and whether the circuit board is qualified or not is effectively judged. And when the comprehensive evaluation index Pc is lower than a first performance threshold value X, generating a performance disqualification label, and performing in-depth grading evaluation through a second multi-stage evaluation module, thereby promoting identification of specific performance defects.

The present invention provides a preheating structure, which belongs to the field of packaging technology, and includes: a first preheating block, which is fixed to a frame; a second preheating block, which is movably connected to the frame and has a preheating state parallel to the first preheating block, in which a preheating gap is formed between the two opposite heating surfaces of the second preheating block and the first preheating block; the second preheating block also has a maintenance state away from the first preheating block, in which a maintenance space is formed between the second preheating block and the first preheating block for facilitating cleaning of the heating surface; a heating element is provided on the first preheating block and / or the second preheating block. The preheating structure of the present invention adjusts the space distance formed between the second preheating block and the first preheating block by rotating the second preheating block, so that there is enough maintenance space to clean the heating surface, avoiding difficulty in cleaning due to insufficient space; and in the low-speed preheating state, the preheating gap can be opened at a certain angle to avoid melting and sticking of the material.

This invention discloses a servo continuous interpolation and curve parameterization control method based on a Mitsubishi PLC system, relating to the field of CNC motion control technology. The method includes process parameter conversion and interpolation execution: The system receives user-inputted process parameters at a human-machine interface, including at least the target bending angle; the PLC main controller automatically calculates the coordinate parameters required for the motion control module to execute the interpolation motion based on a preset geometric model and the process parameters. This application lowers the operational threshold by encapsulating complex mathematical coordinate calculations within the program, allowing operators to interact only with intuitive process parameters, enabling even non-professionals to quickly and accurately debug equipment. This application also improves equipment efficiency and flexibility: intelligent continuous interpolation judgment reduces unnecessary starts and stops, increases equipment operating cycle time, and one-click switching between linear / circular modes enhances the equipment's ability to handle different processes.

The utility model discloses an overload and unbalanced load portable signal simulation device, which comprises a shell and a simulation control circuit arranged in the shell, an input interface is arranged on one side wall of the shell, output interfaces are respectively arranged on three side surfaces of the shell, and a key module is arranged on the outer wall of the top of the shell. The analog control circuit is electrically connected with the input interface, the output interface and the key module respectively, the analog control circuit comprises a controller, a reference voltage module, a power supply module, at least two paths of high-precision DAC converters and a multi-path output module, and the output end of the key module is connected with the input end of the controller. Each control output end of the controller is connected with the input end of one high-precision DAC converter through one corresponding reference voltage module, and the output end of the high-precision DAC converter is connected with one corresponding output interface through one output module. According to the utility model, the problem that the weighing controller channel test cannot be carried out on the overload and unbalanced load site is effectively solved, and a large amount of time cost caused by equipment disassembly is saved.

The invention relates to a delay control device of an automatic unlocking device for paratroopers. The delay control device is characterized by comprising a pointer, a flat plate assembly, a dial, a sector gear assembly, a transmission gear assembly, a first spring, a second spring, a lock needle, an adjusting wheel assembly, a transition ratchet wheel assembly and a balance wheel assembly. According to the invention, the time error of the automatic unlocking device can be accurately debugged and controlled, the operation method is simple and convenient, and the assembly efficiency is high.

The invention discloses a microwave circuit fine tuning probe and a preparation method thereof, the probe comprises an insulating needle body and a debugging metal layer arranged at the end part of the insulating needle body, the side wall of the end part of the insulating needle body is a smooth surface layer, and the smooth surface layer is formed by polishing side wall ridges. The probe is simple in structure, the contact position and the contact amount of the debugging metal layer and the to-be-debugged structure are flexible and controllable, the debugging accuracy is improved, the probe can be used for verification fine debugging of a microwave circuit, prediction of the optimization and improvement direction of a circuit structure is achieved, the microwave circuit can be prevented from being damaged in the debugging process, and the debugging efficiency is improved. A plurality of mature process steps are combined together, so that the formed debugging metal layer is good in uniformity, strong in adhesive force, resistant to abrasion, suitable for debugging operation of a microwave circuit and high in reliability.

The utility model discloses a horizontal debugging structure of machine tool relates to horizontal debugging technical field, and its technical scheme is: including: adapter plate, the recess is seted up on adapter plate, and the recess front and back both sides are seted up with two mounting holes, base plate, it sets up two, two base plates are all fixedly connected in adapter plate top, two base plates are perpendicular distribution, two base plate top all are fixedly connected with two pad, two pad all are equipped with two levels, fixed component, it sets up two, two fixed components are set in two base plate top and two fixed components perpendicular distribution, the beneficial effect is: install adapter plate on the main shaft on machine tool main body, and adapter plate and machine tool main body's main shaft are perpendicular, and two levels on adapter plate will be on a smooth plane, and also can see where the level of machine tool main body has the problem when debugging, thereby more accurate to the machine tool level carries out debugging, can improve the precision and levelness of machine tool.

The utility model relates to the field of engine bench test equipment, and discloses an oil inlet and return pressure control device for an engine bench test, which ensures the performance test accuracy of an engine under different working conditions through a system formed by an oil tank, an oil inlet and return control unit and an oil pipe. The key component comprises a pressure reducing valve used for actively controlling oil inlet pressure and preventing oil return resistance increase and engine power abnormity caused by too high pressure. The one-way valve enables return oil to be directly guided into the engine, oil return resistance is reduced, and oil supply circulation and combustion stability are guaranteed; reasonable diversion and convergence of an oil inlet and return system are achieved through the three-way design, the operation efficiency and flexibility of an oil supply system are improved, the oil inlet and return proportion can be conveniently adjusted according to test requirements, and therefore accurate and real engine performance data are obtained.

The invention discloses a method for testing the transit time of a fiber-optic gyroscope, and solves the problems that a traditional testing method reserves a testing point on a fiber-optic gyroscope circuit, and an oscilloscope is used for measuring the testing point, so that the consumed time is long, and a certain measurement error exists; the repeated plugging and unplugging of the oscilloscope meter pen may cause damage to components on the circuit, which is not beneficial to the batch production of the fiber-optic gyroscope; the method comprises the following steps: modulating an optical signal input into a fiber-optic gyroscope into an electric signal through a photoelectric detector, demodulating the electric signal through a demodulation circuit to obtain a modulated square wave, and carrying out digital sampling on the demodulation circuit generating the modulated square wave through an A / D converter in the demodulation circuit to obtain a sampling value; the transition time of the fiber-optic gyroscope is debugged according to the modulation period of the modulation square wave; according to the method, an oscilloscope is not needed for measurement, manual measurement errors are reduced, and the measurement accuracy is improved; meanwhile, the non-contact operation of debugging personnel and the fiber-optic gyroscope circuit board can be realized, and the damage of human factors to the circuit is avoided.