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The study on the auto-searching for track of intelligent vehicles, the fuzzy self-adaptive pid control are applied to the problem, through flexible formulate fuzzy rules and online setting PID parameters, It has been improved that the steering gear system's dynamic response, steady-state accuracy, robust indices such as performance. Under different driving circuit, the intelligent car can drive more quickly and smoothly.

Electronic speed odometer commonly used has a single way of transferring information or transfers blurry information at present, besides its real time performance is not high enough. To solve the problems, a kind of electronic speed odometer with speech function is designed using SPCE061A single chip as its controller, and Real-Time Operating System of MiniOS is used to improve reliability, the real time performance and accuracy. The paper is going to introduce the theory of electronic speed odometer including a kind of improved algorithm for speed, the technique of speech play and the design of hardware and software of the system. The experimental results of design turn out that the system realizes what we want well.

the end position addition mass and activation joint rotary inertia have important effect on elastic motion stability of flexible manipulator arm. On the basis of mode analysis, the dynamics model of flexible manipulator arm is deduced using Lagrange equation, the state space expression and transfer function are deduced after state variable and input-output are selected. The necessary and sufficient condition of input-output stability and stability criterion of flexible manipulator arm are deduced, based on this, the effect of end position addition mass and activation joint rotary inertia on the motion stability of flexible manipulator arm is analysed.

First of all, the effect of flexural rigidity on the elastic vibration amplitude of the end position of flexible manipulator arm is analysed systematically, and according to this analysis, we hold that the increase of flexural rigidity can reduce the vibration amplitude of the end position of flexible manipulator arm. Then, the effect of axial tensile force on natural frequency and flexural rigidity is analysed, and we deem that the increase of axial tensile force can increase effectively the natural frequency and flexural rigidity, and, the increase of axial tensile force is favorable to the suppression of the elastic vibration of the end position of flexible manipulator arm. After all, the control method of actively changing rigidity by which the elastic vibration amplitude of the end position of flexible manipulator arm can be controlled through regulating the axial tensile force is put forward.