9results about How to "Low cost control" patented technology

The invention provides a rope tension measuring device, which comprises a base provided with a linear chute and two fixed wheels; the driving wheel is installed in the sliding groove, and the driving wheel can slide along the sliding groove; one end of the sensor is connected with the driving wheel; one end of the adapter arm is connected with the other end of the sensor; the handle is provided with an opening groove, and the opening of the opening groove is rotationally connected with the other end of the adapter arm; one end of the rocker arm is rotationally connected to the base, and the other end of the rocker arm is arranged in the open slot and rotationally connected with the open slot; meanwhile, the invention further provides a rope tension measuring method. A rope is placed between the fixed wheel and the movable wheel, when the handle is rotated, the movable wheel can slide along the sliding groove to extrude the rope until the rope is bent, the sensor measures the longitudinal pressing force of the rope, and the tension of the rope is determined based on the longitudinal pressing force of the rope.

The utility model discloses a gimbal rotation arm gap elimination structure, by the gimbal rotation base body, gimbal rotation base, nylon flat pad, wave spring pad and tension screw are formed, the middle part of gimbal rotation base body is provided with through -hole, and both sides of through -hole are provided with round groove, gimbal rotation base is provided with left and right two fixed arms, tension screw passes through the fixed arm of gimbal rotation base right side and the fixed arm of gimbal rotation base body and is connected through the thread after, nylon flat pad is set in the round groove of gimbal rotation base body left side, is connected through the thread with tension screw, right side and gimbal rotation base body contact, left side and wave spring pad contact, and wave spring pad left side and gimbal rotation base contact, the round groove of gimbal rotation base body right side is provided with nylon support flat pad, and nylon support flat pad left side and gimbal rotation base body contact, right side and gimbal rotation base contact. Through this structure, the purpose that gap elimination air return is reached to reduce, this structure is simple to process, does not need higher precision requirement, and assembly difficulty greatly reduces, and the cost control of product, and assembly difficulty, greatly improve.

The invention discloses a method and device for measuring the surface topography of a wafer, and the method comprises the steps: obtaining T interference fringe images, T is greater than or equal to 3, and the T interference fringe images are collected at T collection moments in the same phase shift process; a compensation coefficient corresponding to each interference fringe image is obtained, and the value of the compensation coefficient is associated with the illumination intensity of the corresponding interference fringe image; the corresponding interference fringe images are compensated based on the compensation coefficients, so that the illumination intensity of each compensated interference fringe image is the same, and T compensated interference fringe images are obtained; and performing phase analysis and phase unwrapping on the T compensation interference fringe images to obtain the surface morphology of the wafer. By utilizing the method, the illumination intensity in the phase shift process is compensated through the compensation coefficient, the cosine phase error caused by unstable light power output of the light source is remarkably reduced, the phase analysis precision is improved, and the precision and repeatability of wafer surface topography interference measurement are further improved.

The utility model relates to an automobile audio player system, which belongs to the technical field of vehicle-mounted automobile players and comprises a third-party player, a Bluetooth module and an automobile host navigation system, the third-party player is connected with the automobile host navigation system through the Bluetooth module, and the third-party player is connected with the automobile host navigation system through the Bluetooth module. And the automobile host navigation system is communicated with the microphone so as to receive audio data of the microphone. The system perfectly solves the connection and control of the original vehicle host and the external third-party high-definition player through the Bluetooth device, realizes the bidirectional control and stable transmission of audio streaming media signals by both parties, and maintains low-power consumption and low-cost control while ensuring high-quality music transmission. The third-party player does not need to be externally connected with a control panel and a direction controller, all functions of direction control can be achieved, a new way for connection and control of an original vehicle host and the externally-connected third-party player in the automobile sound equipment refitting industry is opened up, and perfect fusion of the original vehicle host and the player is achieved.

The invention relates to the technical field of big data analysis, in particular to a chemical product market analysis method and system based on big data, and the method comprises the following steps: obtaining online service data of a chemical product based on a chemical product online service platform, the online service data comprising online browsing information and transaction data of the chemical product; establishing a purchase driving force analysis model according to the browsing information and the transaction data, and analyzing the demand condition of the chemical product through the purchase driving force analysis model; constructing a product sales prospect prediction model according to the browsing information and the transaction data, and analyzing the sales condition of the chemical product by using the product sales prospect prediction model; the market status of the chemical products of the service platform is evaluated in combination with the demand status and the sales status, and price monitoring and quantity regulation and control of the chemical products are realized. The chemical product market information is analyzed based on the online service platform data, comprehensive and accurate market information is provided for platform chemical products, and chemical production and marketing strategies are achieved.

The invention discloses a high-strength aluminum-zinc plated plate produced by an improved Sendzimir method and a process thereof, which belong to the technical field of metal plates and comprise the steps of acid pickling, cold rolling, aluminum-zinc hot-dip plating, high-temperature annealing, rapid cold rolling and finishing. The process standard in a whole set of acid pickling, cold rolling and aluminum-zinc plating integrated production process system is precisely planned, and the production requirements of the high-strength aluminum-zinc plating plate are precisely met. And through a fine process control means, the high stability and quality consistency of the 0.95 mm thickness grade aluminum-plated zinc plate in performance are ensured, and the tensile strength is always stabilized at 700 Mpa or above. According to the production technology, stable operation of the process is successfully achieved, the advantages that the technological process is simple and clear, and production management and control are convenient and efficient are shown, and due to low cost control, the production technology becomes an optimal scheme for production of the 0.95 mm-thickness-level high-strength aluminum-zinc-plated plate.

The electrophoresis device comprises an electrophoresis part, a part placing part, an electrolyte conveying part and an electrolyte aeration part, the electrophoresis part is an electrophoresis tank, an electrophoresis space is arranged in the electrophoresis tank, the part placing part is a part placing platform, and the electrolyte conveying part is arranged on the part placing platform. A grid baffle and a peripheral baffle are arranged on the part containing platform, the grid baffle and the peripheral baffle on the part containing platform are reasonably limited, a lifting air cylinder is matched to accurately immerse parts into electrolyte, a foundation is laid for a good electrophoresis effect, and the position of an electrode bar can be flexibly adjusted; a uniform electric field can be provided according to the shapes and sizes of different parts, uniform deposition of charged particles is ensured, the thickness and quality of an electrophoresis coating are more controllable by setting electrophoresis parameters, and diversified production requirements are met.

The application relates to the field of rescue reconnaissance, and discloses a reconnaissance method and system of a dynamic release sub-machine and data fusion, which comprises the following steps: when a mother ship unmanned aerial vehicle carries a sub-machine and flies to a disaster area, macroscopic reconnaissance load is used to generate macroscopic situation information by scanning; three-dimensional modeling load is used to generate a three-dimensional model of a scene by scanning, and three-dimensional environment information is output; a target area to be approached and reconnoitered is determined according to the macroscopic situation information; the mother ship unmanned aerial vehicle calculates a sub-machine release time according to the three-dimensional environment information and the characteristics of the target area, generates a sub-machine reconnaissance track, carries the sub-machine and flies to a release position, and releases the sub-machine; the released sub-machine flies to the target area according to the sub-machine reconnaissance track, performs fine reconnaissance, and returns fine information obtained through the reconnaissance to the mother ship unmanned aerial vehicle in real time for fusion. The application has the advantages that the overall endurance time can be prolonged, and seamless connection from macroscopic situation perception to microscopic detail identification can be realized.

The invention discloses a gear-ring-free double-planet-row hybrid power system which comprises a first planet gear mechanism, a second planet gear mechanism, a third planet gear mechanism, a fourth planet gear mechanism, a fifth planet gear mechanism and a sixth planet gear mechanism. The first planet gear mechanism comprises a first sun gear I, a first sun gear II, a first planet carrier and a first planet gear assembly arranged on the first planet carrier; the second planetary gear mechanism comprises a second sun gear I, a second sun gear II, a second planet carrier and a second planetary gear assembly arranged on the second planet carrier, and the first sun gear II and the second sun gear II are fixed into a whole; the engine is in transmission connection with the first planet carrier; the first motor is in transmission connection with the first sun gear I; the second motor is in transmission connection with the second sun gear I; the brake component is used for controlling locking or releasing of the first sun gear II and the second sun gear II; the clutch component is used for controlling the second sun gear I and the second planet carrier to be combined or separated; the output mechanism is in transmission connection with the second planet carrier; the hybrid power system is simple in structure, and meanwhile the dynamic property and economical efficiency of the vehicle are improved.