Advanced Materials Research Vols. 655-657

Abstract: A novel three-axis compliant mechanism is presented. Three original constraints are selected from the freedom and constraint complement topology chart. A compliant mechanism with three rotation freedoms is designed. Constraint 2 and Constraint 3 is designed as a whole to improve the precision and natural frequency. The finite element model is established. And the natural frequency and the main vibration mode are obtained. The deformation of the rotation axis is small. The input and output of the compliant mechanism is decoupled.

Abstract: In this work, a laminated microstructure-plate electrically heated micro evaporator was proposed. The effects of microstructure types on the evaporation efficiency of electrically heated micro evaporator under different input voltage values and flow rates of water were investigated. It was indicated that the triangular microstructure plate presented the best evaporation efficiency regardless of the change of input voltage and feed flow rate. The nonuniform-distributed microchannel plate presented better evaporation performance than that of uniform-distributed microchannel plate, while the triangular microstructure plate presented higher evaporative performance than that of rectangular microstructure plate.

Abstract: In order to diagnose the faults of the gyrocompass, a dummy fault diagnosis system based on the PC/104 computer is presented. By using such technologies as the blurring nerve network、the fault converse illation, knowledge database and so on, the system’s reliability and flexibility are greatly enhanced. The results show that the relative errors of the data acquisition and parameter simulation are lower than 0.5%, the direct current power is lower than 300W, the veracity of fault isolation is reached to 96%, the alternating current power is lower than 250W.

Abstract: Analysis and comparison with conventional brake systems and brake-by-wire-system with pedal stroke simulator, and the establishment of the pedal stroke simulator model with the AMESim software, joint Matlab/Simulink software to design single neuron adaptive intelligent PID control strategy of the pedal stroke simulator. Through simulation verification draw that this brake-by-wire-systems and the control strategy can achieve the requirements of brake pedal feel of conventional brake systems, and effectively improve comfort during braking.

Abstract: A mathematical model of eight degrees freedom was built up with considering the normal load transfer due to the presence of the longitudinal, lateral acceleration for a vehicle under braking in turn condition. And the simulation model based on the mathematical model was eatablished by means of MATLAB/Simulink software. The comparison between simulation results and real vehicle test results under the snow pavement double-lane change condition is in good agreement. It can be concluded that the 8DOF vehicle dynamics model of this study is acceptable and valid.

Abstract: As a field bus, CAN bus has been increasingly used in automotive electronic system.In this paper,a vehicle internal network architecture based on CAN bus system was introduced. Utilized the high-performance PIC18F258 MCU with CAN controller to design a CAN bus interface circuit, meanwhile shown the structure of major hardware and software design processes. The circuit has several advantages such as simple hardware design, high reliability,and powerful real-time.

Abstract: This paper represented the method of obstacle avoidance for robotic wheelchair based on the multi-sensor information fusion. The installing angle of sensor was analyzed. Path planning was discussed in global or local environment separately. Dijkstra algorithm and fuzzy control algorithm were proposed to solve the problem of global and local path tracking. The simulation had provided an easy-used method for designing and validating the algorithms.

Abstract: To acquire torque performance in seat belt conveniently and precisely, the measurement scheme based on stepper motor was established. The hardware was developed with high-speed data acquisition unit based on PCI protocol. The software which includes user interface and data acquisition control module etc was developed with multithread technique and document-view architecture. The experiments with seat belt spring show that the max torque error of the system is 0.08N.cm. The system has merits of high precision, easy operation and can provide reliable data for spring torque performance in seat belt.

Abstract: The paper mainly introduced the test and model identification process of electromechanical actuator. For the virtual instrument is convenient in testing and Matlab has powerful calculation function, combined with the two environment ,and a test platform was build to realize the integrated design of testing and model identification, and the simulation result showed that both the testing system and the least square algorithm is effective.

Abstract: Robot-assisted rehabilitation training on a treadmill is a popular research direction in recent years. And it will replace the artificial rehabilitation training to become a major rehabilitation training method for patients with lower limb action impairments. However, in the existing rehabilitation system, treadmill run in the constant speed. It has to change the speed manually rather than adjust according to the patients’ active consciousness. In the paper, we proposed a treadmill speed adaption control method for Lower Limb Rehabilitation Robot. A pull pressure sensor is used to detect human’s movement trends. The data are calculated through non-linear gain and then sent to the speed controller in the treadmill according to the characteristics that the hip of human body is fixed on the robot in the walking direction of the sagittal plane. Based on this principle, we designed a force measurement structure and verified the control method by experiment. The result shows that the control method can satisfy adaptive control of the treadmill speed.