Abstract: Provided is a steam jet multifunctional aircraft deicing vehicle with steam jet, includes a vehicle body, where a steam generating assembly is arranged in the vehicle body, and the steam generating assembly is connected with a steam conveying assembly. A moving assembly is rotatably connected above the vehicle body, and the moving assembly is rotatably connected with an execution assembly. The execution assembly includes a first spray head assembly and a second spray head assembly. The steam conveying assembly includes a first supercharger and a second supercharger arranged side by side, where an air outlet end of the first supercharger is communicated with one end of a first air outlet pipe, and an other end of the first air outlet pipe is communicated with spray heads of the second spray head assembly through a first air pipeline.

Abstract: The present invention provides an adjustment device for a flexible wall surface suitable for droplet impact, which includes a base, a staybolt, an experiment substrate and the wall surface to be tested, wherein the periphery of the wall surface to be tested is fixed to the upper surface of the experiment substrate by an adhesion agent and the inclination angle of the wall surface to be tested is adjusted by adjusting the left two staybolts and right two staybolts on the experiment substrate to different heights; and a plurality of through holes are uniformly formed on the experiment substrate and provided therein with wall surface adjusting bolts used to abut against and apply force to the wall surface to be tested, so as to allow the wall surface to be tested to present a desired curved shape.

Abstract: An automatic packing machine and automatic packing method for express delivery are provided. The automatic packing machine for express delivery includes: a frame; a box discharging mechanism, fixed to the frame; a weighing mechanism, fixed to the frame, the weighing mechanism including a weighing plate and a weighing plate steering engine which are arranged in coordination and an image collecting module, the weighing plate steering engine and the image collecting module being fixed to the frame, and the image collecting module facing the weighing plate; a box body unfolding mechanism; a box closing mechanism; a conveying mechanism; and a controller, connected to all other structures of the automatic packing machine for express delivery. Through the technical solutions of the present invention, multiple functions are integrated, the degree of automation is high, and different items are packaged by using different box bodies.

Abstract: A permanent magnet motor including a stator, a rotor and a control circuit. The control circuit is the closed-loop control circuit, including a speed control device, a torque control device, a voltage vector control device, a space vector control device, and an inverter control device connected in sequence. A stator magnetic circuit includes a magnetic linkage correction circuit, the magnetic linkage correction circuit is composed by a single integrator and a low-pass filter connected in series; Small leakage, small magnetic chain harmonic of permanent magnet, small eddy current loss and iron loss of motor, good control accuracy, no shaking of motor rotor and a long service life can obtained.

Abstract: Provided are a four-dimensional non-equilibrium hyperchaotic system and analog circuit, based on the five simplest three-dimensional chaotic systems; an operational amplifier (U1), an operational amplifier (U2), and resistor and capacitor are used to constitute an inverting adder and an inverting integrator; multipliers (U3) and (U4) are used to perform multiplication operations; an 8V DC power supply is used for constant input; the operational amplifier (U1) and operational amplifier (U2) use LF347N, and the multipliers (U3) and (U4) use AD633JN; the operational amplifier (U1) is connected to the operational amplifier (U2) and the multiplier (U3); the operational amplifier (U2) is connected to the multiplier (U4), the DC power supply, and the operational amplifier (U1); the multiplier (U3) is connected to the operational amplifier (U1); the multiplier (U4) is connected to the operational amplifier (U2); the DC power supply is connected to the operational amplifier (U2); on the basis of the five simplest thre