According to the analysis of simulation curves and the contrast between pid controller with disturbance feedforward compensation and fuzzy controller , it can be concluded that the new method of control not only has better robustness to the disturbance and varying parameter , but also has quick response and simple realization applying to the system with strict demand on the range of export parameter under variational condition 通过对仿真曲线的分析并与干扰前馈pid控制及模糊控制相比较，可以看出这种新的算法对干扰及参数摄动的鲁棒性强、响应快速且实现简单，尤其适用于工程上在变工况情况下对输出参数变化范围要求较高的系统。
The engine running signals are acquired in the computer and the running parameters are calculated simultaneously . the control signals are given to the dynamometer through the interface circuit . therefore , all varying modes of the engine can be satisfied with this approach and the simulation of real vehicle engine running mode can be realized 利用计算机采集发动机信号，实时地计算出发动机的运行参数，控制信号由计算机通过接口电路输出到测功机，并可在计算机中编程进行控制测功机的励磁电流的变化，这样就可以实时地满足发动机各种变工况的运行需要，从而实现车用发动机道路行驶工况的模拟。
Simultaneously how to reduce the quantity consumed by the system of refrigerating is also a forward question for study in thermal - physical engineering . at the basis of analyzing thoroughly the stirling - cycle , the thesis puts forward a new refrigerating cycle in house - hold refrigerator , which adopts the two - state , two - component working fluid 本文在对stirling循环深入分析的基础上，利用其定温吸热、放热的优点，同时采用相变工质作为制冷剂，利用其在低温下气化吸热制冷单位质量工质的制冷量大的特点，提出了采用双相双组份工作介质的新型家用冰箱的制冷循环。
The moving manner of reciprocating i . c . e . shows its working processing of shock characteristic , simultaneously generates wild vibration and noise signal and often changes its operate speed . so it ' s difficult to get unique and simple spectrum unlike a rotary machine 内燃机往复式活塞和曲柄连杆机构的运动方式，决定了它具有冲击特点的工作过程，并且在实际应用中这种过程还是变工况的，它所产生的振动与噪声信号十分杂乱，不像旋转机械那样具用简洁的频谱特征。
Under the low solid flux , the particle velocity in the whole flow field was processed by mqd in the transitional flow regions . the results show that the variation of particle velocity with the time and the influence of particle clusters in the real time . under the high solid flux , in the dilute flow region , the particle velocity is analyzed and discussed with the variation of operating condition 在低循环流率下对过渡区典型流态下颗粒团的不同流态进行了mqd法处理，获得了整场颗粒运动速度及随时间变化规律，颗粒团运动对流场内颗粒速度的动态影响；对稀相区在较高固粒流率下对颗粒运动速度进行了变工况分析和讨论。
