Abstract: The present disclosure provides a method for intelligent obfuscation of mobile applications. The method includes: performing call detection on a method chain through aspect-oriented security to detect an abnormal call; identifying an attacked node in the method chain with respect to the abnormal call to determine a hardening location; identifying an attack means with respect to the abnormal call to determine hardening strength; selecting an automated hardening solution based on the hardening strength; and executing the selected automated hardening solution at the hardening location to control impact of the automated hardening on performance in a threshold range.

Abstract: The present invention provides a hexagonal frustum deployable unit and the deployable mechanism formed by the same, which includes hexagonal frustum deployable units, unit connecting rods and support frames, 3N2+3N+1 hexagonal frustum deployable units are combined into a closely connected deployable mechanism through unit connecting rods and support frames; the present invention combines hexagonal frustum deployable units array into deployable mechanisms of any aperture size, which has advantages such as high rigidity, high retraction rate, high support performance and adjustable aperture size, which makes space deployable antenna mechanism safer, more efficient and convenient during operation process and solves problems of weak signal transmission or reception, small data capacity and low communication rate of traditional antennas.

Abstract: The present invention discloses a bi-directional flat plate foldable unit, including a first row of antenna plates and a second row of antenna plates distributed along a first direction; the first row of antenna plates and the second row of antenna plates both include three antenna plates distributed in a second direction perpendicular to the first direction, three antenna plates in the first row of antenna plates and three antenna plates in the second row of antenna plates are set opposite to each other and hinged to form a first rotating pair; any two antenna plates adjacent to each other in the same row of antenna plates are hinged to form a second rotating pair; three antenna plates in the first row of antenna plates and three antenna plates in the second row of antenna plates are connected by a vertical support mechanism, and the first row of antenna plates are connected to the second row of antenna plates by a lateral support mechanism.

Abstract: The present invention discloses a bi-directional flat plate foldable unit, including a first row of antenna plates and a second row of antenna plates distributed along a first direction; the first row of antenna plates and the second row of antenna plates both include three antenna plates distributed in a second direction perpendicular to the first direction, three antenna plates in the first row of antenna plates and three antenna plates in the second row of antenna plates are set opposite to each other and hinged to form a first rotating pair; any two antenna plates adjacent to each other in the same row of antenna plates are hinged to form a second rotating pair; three antenna plates in the first row of antenna plates and three antenna plates in the second row of antenna plates are connected by a vertical support mechanism, and the first row of antenna plates are connected to the second row of antenna plates by a lateral support mechanism.

Abstract: The present invention provides a four-chain six-degree-of-freedom hybrid mechanism. The four-chain six-degree-of-freedom hybrid mechanism comprises a fixed platform, a sliding rail mounted on the fixed platform, two sliding blocks, a mobile platform and four linear actuator chains connecting the mobile platform with a first sliding block and a second sliding block. The mobile platform is square-shaped. In the four linear actuator chains, the first linear actuator chain and the third linear actuator chain have the same structure while the second linear actuator chain and the fourth linear actuator chain have the same structure. The mobile platform can achieve six degrees of freedom. The four linear actuator chains coordinate to drive so as to achieve two translational degrees of freedom and two rotational degrees of freedom; the first sliding block and the second sliding block coordinate to drive so as to achieve the other translational and rotational degrees of freedom.

Abstract: The present invention discloses a modular deployable antenna mechanism based on a symmetrically structural tetrahedron combination unit. The deployable antenna mechanism is formed by multiple deployable antenna modules, two adjacent deployable antenna modules are connected through a first face plate at the bottom of one deployable antenna module and a second face plate at the bottom of the other deployable antenna module, the first face plate and the second face plate are connected through a Hooke joint, an unconnected first face plate and second face plate of the two adjacent deployable antenna modules are connected through a first synchronizing bar, a middle portion of a bar body of the first synchronizing bar can be folded, and the first synchronizing bar is rotationally connected with the first face plate and the second face plate.

Abstract: The present invention provides a four-chain six-degree-of-freedom hybrid mechanism. The four-chain six-degree-of-freedom hybrid mechanism comprises a fixed platform, a sliding rail mounted on the fixed platform, two sliding blocks, a mobile platform and four linear actuator chains connecting the mobile platform with a first sliding block and a second sliding block. The mobile platform is square-shaped. In the four linear actuator chains, the first linear actuator chain and the third linear actuator chain have the same structure while the second linear actuator chain and the fourth linear actuator chain have the same structure. The mobile platform can achieve six degrees of freedom. The four linear actuator chains coordinate to drive so as to achieve two translational degrees of freedom and two rotational degrees of freedom; the first sliding block and the second sliding block coordinate to drive so as to achieve the other translational and rotational degrees of freedom.

Abstract: A bionic pneumatic soft gripping device includes a flexible sleeve, a connecting base, a pneumatic artificial muscle, a flexible holder, and a gap tube. The flexible sleeve is an annular jacket-like structure. The flexible holder is a tubular hollow structure having openings at both ends thereof. The pneumatic artificial muscle is wound on the flexible holder. The flexible sleeve is sleeved on the flexible holder connected with the pneumatic artificial muscle through the opening of the flexible sleeve. The pneumatic artificial muscle is connected to a tube joint via a fastening sleeve, and the tube joint is connected to the gap tube. The bionic pneumatic flexible gripping device of the present disclosure has advantages of large gripping force and compliancy, thereby effectively gripping objects in various shapes within its gripping size range.

Abstract: The present invention discloses a modular deployable antenna mechanism based on a symmetrically structural tetrahedron combination unit. The deployable antenna mechanism is formed by multiple deployable antenna modules, two adjacent deployable antenna modules are connected through a first face plate at the bottom of one deployable antenna module and a second face plate at the bottom of the other deployable antenna module, the first face plate and the second face plate are connected through a Hooke joint, an unconnected first face plate and second face plate of the two adjacent deployable antenna modules are connected through a first synchronizing bar, a middle portion of a bar body of the first synchronizing bar can be folded, and the first synchronizing bar is rotationally connected with the first face plate and the second face plate.

Abstract: The present disclosure relates to a bionic pneumatic soft gripping device, which comprises a flexible sleeve, a connecting base, a pneumatic artificial muscle, a flexible holder, and a gap tube. The flexible sleeve is an annular jacket-like structure. The flexible holder is a tubular hollow structure having openings at both ends thereof. The pneumatic artificial muscle is wound on the flexible holder. The flexible sleeve is sleeved on the flexible holder connected with the pneumatic artificial muscle through the opening of the flexible sleeve. The pneumatic artificial muscle is connected to the tube joint via a fastening sleeve, and the tube joint is connected to the gap tube. The bionic pneumatic flexible gripping device of the present disclosure has the advantages of large gripping force and compliancy, and can effectively grip objects in various shapes within its gripping size range.

Abstract: The present invention relates to a method of producing the sensors for monitoring corrosion of heat exchanger tubes in a thermal power plant. The sensor is made of the tubes taken out from actual heat-exchanger. As a result, the sensor not only has the same material as the actual heat-exchanger tubes, but also has the same surface state where it contacts the working medium. Therefore, a serious technical difficulties have been solved that the sensor made by the prior art can't measure different corrosion states of actual heat-exchanger tubes, that the corrosion rate measured is different from the corrosion rate of actual heat-exchanger tubes, and that the cost of anti-corrosive treatments is high . By use of the sensor made by the present invention, the different corrosion states of actual heat-exchanger tubes can be measured, not only the rate of uniform corrosion of actual heat-exchanger tubes can be measured but also the rate of localized corrosion of the heat-exchanger tubes can be measured.

Abstract: The present invention relates to a method of producing the sensors for monitoring corrosion of heat exchanger tubes in a thermal power plant. The sensor is made of the tubes taken out from actual heat-exchanger. As a result, the sensor not only has the same material as the actual heat-exchanger tubes, but also has the same surface state where it contacts the working medium. Therefore, a serious technical difficulties have been solved that the sensor made by the prior art can't measure different corrosion states of actual heat-exchanger tubes, that the corrosion rate measured is different from the corrosion rate of actual heat-exchanger tubes, and that the cost of anti-corrosive treatments is high . By use of the sensor made by the present invention, the different corrosion states of actual heat-exchanger tubes can be measured, not only the rate of uniform corrosion of actual heat-exchanger tubes can be measured but also the rate of localized corrosion of the heat-exchanger tubes can be measured.