Papers by Author: Jian Bo Cao

Abstract: The traditional electric heating device mainly used resistance wire as the electric vehicle components. A novel semiconductor nanoelectrothermal film as a heating material was to study its feasibility. By analyzing the heating mechanism of electrothermal film and comparing the existing heating device, an energy-saving heater was designed based on semiconductor nanoelectrothermal film. In STC89C52 micro-controller core, a practical and stable temperature control system was devised by a variety of control methods - shock control, relay control, pressure control, and so on. The energy consumption experiments were done between new electric heating device and conventional heater, and the results showed that new electric heating device had more energy efficient. On the basis of this study, a series of electric heating products could be developed with low power and environmental protection, and it was a useful exploration for technology upgrades for the electric heating industry.

Abstract: Current domestic and international for the experimental apparatus been associated asynchronous motor design generally used hand horseshoe magnet rotates to drive the rotor rotates, While it is possible to achieve, the apparatus is too simple, and the effect is not in great satisfaction. To further improve the experimental results, a new type of asynchronous motor experimental device is designed, whose working mechanism is a DC motor as a driving source, driven by a reduction gear mechanism to produce a rotating magnetic field, the control circuit can be achieved by utilizing the rotational speed and adjust direction. By apparatus of the stator, rotor apparatus, the related motor control and display device design can make the operation more stable, more easily observed. The experimental apparatus can enhance students' awareness and understanding of asynchronous motor, so that the original abstract theory becomes boring incomprehensible gusto, to stimulate students' desire for knowledge, strengthen students' practical knowledge and ability, with higher practical significance. The apparatus simple shaped, with simple and safe operation, is able to facilitate teaching, with better promote the use of value.

Abstract: Traditional electric heating boilers have disadvantages, such as low purity of the heating resistor, low electric conversion efficiency, poor stability, high acquisition, maintenance costs and so on. This paper, on the one hand, analyzed the basic rationale of the current electric heating boilers, and on the other hand, the advantages of nanomaterials. Based on the combination of the basic rationale and the advantages mentioned above, this paper then designed a new type of electric heating boilers, including the relevant control system, which used nanoelectric membranes as the heating component. This new nanoelectric boiler adopts a brand-new heating method, and it does not get heat by the combustion of chemical energy. On the contrary, the electrical energy is directly converted into heat. This new nanoelectric boiler is equipped with the intelligent control system, and uses computers to realize complete automation. It has excellent physical stability, high electric conversion efficiency and power factor as well as a large power density, and low-carbon environment. Compared with the conventional products of the same electric power, this new type of electric heating boilers can save 30% to 50% of energy. Besides, it is environmental-friendly and functional.

Abstract: E-ACE (acrylic elastomer) is a kind of material so far in electro-active polymer (EAP) in the most excellent performance. Based on the analysis of the basic principle of the E-ACE power generation, the feasibility is studied on E-ACE power generation principle to achieve energy recovery and damping. Design a model damping device of vehicle for energy recovery based on E-ACE. Through analysis, when the system vibrates near the resonance frequency, deformation of spring is greater, E-ACE materials to move up and down reach the larger amplitude, and the more energy it produces. To analysis the system about harmonic response by ANSYS software, get the relationship between spring stiffness K, damping coefficient C and external incentive, then analysis the resonance frequency of the system. The simulation results verify the feasibility of the design scheme. Results show that E-ACE has excellent performance in the automobile vibration energy recovery and vibration. E-ACE will have broad application prospects.

Abstract: According to the main problems of nonlinear driving control and driving force calibration of pure electric vehicle, based on the research of permanent magnet synchronous motor control method, on the vehicle's driving force calibration techniques were studied, from the high efficiency and energy saving analysis of necessary driving force calibration, designed a new driving force calibration method, and drew the control curve of the accelerator pedal opening and the speed and the motor torque relationship between the three, and finally to pure electric self-developed to test platform for automotive related experiments. The experimental results show that, in the vehicle driving process, the driving force calibration technique compared with the previous calibration has better performance, while no obvious change of acceleration performance, the current value of the initial acceleration phase have been greatly decreased, could make the vehicle run more energy efficient, extended battery life and vehicle driving mileage.

Abstract: The traditional electric boiler does not possess heater resistance with high purity and its power factor is always less than one. In order to solve these problems, a novel semiconductor nanoelectric film was studied and used to the electric boiler. Through analysing the principle of existed electric boilers and the advantages of nanotechnology heating materials, a new electric boiler was designed based on nanoelectric film as the heating element. The three-dimensional modeling was finished for the mechanical structure of new nanoelectric boiler. The new nanoelectric boiler has excellent physical stability, high electric conversion efficiency, high power factor, high power density, and long life for using. It could have a very good market prospects in the near future.

Abstract: The traditional cars consume high energy and the energy of vibration is wasted. To solve these problems, a new energy recovery damper was designed by analyzing the principle of vibration energy recovery and the advantages of electroactive acrylic elastomer materials. The three-dimensional modeling was finished for the mechanical structure of the energy recovery damper. As an important constituent part of vehicle suspension system, the energy recovery damper was a nonlinear vibration system which contained elastic force and damping force. The system could generate random vibration with the drive of the sources such as pavement roughness and engine. The vibration energy can be recycled and stored into vehicle battery by the energy recovery damper. The energy could be saved by changing the vibration energy into electric energy. The energy recovery damper has the advantages of simple structure and high efficiency.

Abstract: For saving the unavailable space in high place of residence reasonably, a new type of mobile portable wardrobe was designed. The whole height of this wardrobe was raised, and its upper cabinet is relatively movable. The improvement made the wardrobe more convenient, efficient and secure for users to obtain or clear up items.

Abstract: In order to promote the efficient recovery of the vibration energy, to achieve the purpose that energy of vibration can be converted to electrical energy and implement the vibration energy recovery, the electroactive polymers (EAPs) were discussed and studied in this paper. The vibration power generation mechanism of EAPs and vibration system were theoretical analysed, a nonlinear technology (synchronized switch harvesting with inductor) was used in process of energy recovery. The experimental results showed that EAPs had good effect of the vibration energy conversion and nonlinear technology was more efficient than conventional technology in energy recovery.

Abstract: To solve the problems of traditional library book vehicle: high labor intensity and low efficiency, a new book vehicle with electric power assistant was studied and designed. It included the body system and the control system. The body system could load books and achieve orientation function. The control system could achieve electric power assistant automatically according to wheel speed. The book vehicle was advantaged in simple structure, easy to use, saving manpower, high efficiency, so it was deserved to be used wildly.