最佳系统控制

In order to prove the reliability, test studies have been primarily carried out in the indoor soil bin. The data of the vehicle driving state parameters under the same or different terrain are analyzed. The process curves are compared by different control schemes. The theoretical model of the optimum driving state is reliable and fuzzy control scheme is feasible. The disturbances and unknown factors of control system are analyzed. Test results prove that the half-tracked air-cushion vehicle can drive steadily under control of the computer. At the same time the sensors used to measure soil mechanics characteristics on line need to be developed. And it is the important problem to be solved in the future study. The necessary regulation and correction are put up. So the studies in this paper provide some instruction for the further research work.

为了验证本文提出的最佳工作状态及最佳垫压理论，并分析控制系统的可靠性和稳定性，本文在半履带式气垫车的模型车上，在室内土槽中进行了初步的实车性能和理论验证试验，考察了在同种和不同土壤条件下气垫车的行驶状态参数的测量数据，比较了采用不同控制方法下的过程曲线，验证了最佳工作状态的理论模型和模糊控制系统方案的可行性与可靠性，从而保证了采用自整定模糊PID控制器能够使半履带式气垫车在稳定行驶最佳工作状态下；同时通过试验研究，分析了系统中各干扰与未知因素，对控制方案进行了相应的调整和修正，为今后进一步的研究工作提供了一定的指导。

So in this paper based on the characteristics and the optimum state theory of the vehicle, some kinds of control schemes are compared and discussed, and the fuzzy PID control scheme is adopted at last. The relation between air-cushion pressure and fan rotational speed on the optimum driving state is studied. The cushion pressure is used as controlled variable and the fan revolution is used as regulated variable. And transducer and fan motor are actuators.Based on the structure and operating properties of half-tracked air-cushion vehicle, the control system scheme and structure are presented. A control scheme using the self-tuning PID fuzzy logical controller is adopted. Fuzzy rules are set up and some researches have been done for fuzzy tuning method. At the same time the real-time measurement scheme by computer control is proposed, and electric circuits are designed. In the control system of half-tracked air-cushion vehicle cushion pressure P〓 is used as controlled variable and the fan speed n〓 as regulated variable.

因此本文以半履带式气垫车的特性和最佳工作状态理论为指导，通过对各种控制方法的比较与探讨，提出采用模糊PID控制方案，并且研究了在最佳工作状态下垫压及风机转速的关系，提出气垫压力作为控制参数，变频器和风机电机为执行机构，风机转速为调节量；主要进行了自整定模糊PID控制器的设计，研究了自整定PID模糊控制器的实现方法，编制了模糊控制规则，制定了模糊控制参数查询表，并分析了影响自整定模糊控制器相关的影响因素，确定了模糊控制表；为了实现半履带式气垫车的自动控制，还提出了计算机模糊控制系统的原理与结构，设计了相应的测量电路与控制软件。

Based on the analysis of design demands of the equipment to confect the nutritious liquid for soilless culture ,this paper presen ts a list of design demands,and confirms functional parameters.

分析了无土栽培养液配比设备的设计要求，给出设计要求表，并确定功能参数，进行功能分析后，建立功能结构，采用形态学矩阵法求解出多种方案，经加权评价后确定最佳自动控制系统设计方案

Laser fuze ; APD receiving system ; optimum bias control ; low-noise amplifying circuit

激光引信； APD接收系统；最佳偏压控制；低噪声放大电路

Aiming at the big time-delay,big burthen fluctuating and mutable characteristic of the controlled object,combining Smith predicator with PID controller,the BP neural network tuning Smith-PID controlling policy is presented.

针对大时滞时变对象，把Smith补偿控制原理和PID参数的自适应调整方法结合起来，提出了基于BP神经网络整定Smith PID控制算法，即在Smith预估补偿控制系统中，利用BP神经网络在线自学习整定PID参数，使PID参数实现最佳的非线性组合，以适应对象特性的变化，从而克服了常规PID算法不适应大时滞系统控制和常规Smith算法过于依赖模型精度的缺陷。

Study control strategies for parallel and series hybrid powertrain, and establish a simple and practical control method, which is using logic threshold value and targeting the best fuel economy and emission performance of vehicle.

系统地研究了并联和串联混合动力总成的控制策略，确定以整车燃油经济性能和排放性能最佳为控制目标，采用简单实用的逻辑门限值控制方式。

PLC is used in system control level in order to control the general operation of system. An industrial computer is used in the management level, which implements the interfaces of different PLC, and realizes seriate batching.

由于控制过程中各种信号量以及评价指标不易定量表示，模糊理论是解决这一问题的有效途径，运用模糊推理，即可实现对PID参数的最佳调整，解决了现有配料系统控制参数多、复杂的问题，并有效解决了称量速度和称量精度的矛盾。

In the non dimensioned time domain,the generalized quadratic performance criterion of error state transits into the optimal problem of structural parameters,thus gets an optimal parameter system—optimal damping control system with big margin for stability,little number for oscillation,small overshoot,and small setting time.

在无量纲时域中，把状态误差的广义二次型性能指标转换成结构参数的优化问题，从而得到一种稳定裕度大、振荡次数少、超调小、调节时间短的最佳参数系统——最佳阻尼控制系统。

4 Wash liquor tank level control 洗涤罐液位控制 In the control of a washing system it is important to keep the wash factors as close to their optimal set point values as possible.

在洗涤系统的控制中，很重要的一点是保持洗涤因子尽可能接近他们的最佳设定点。

The vehicle is positioned by GPS aided with dead reckoning. System controlling, data collecting and processing, and the navigation information output are done by the embedded hardware platform. The embedded AVN application software calculates the vehicle's geographic position, velocity, and the direction real-timly through the vehicle's positioning subsystem, selects the best driving path according to the demand, and does navigation processing, outputs the navigation information through electrical map and voice, which guide the driver to reach the destination quickly, safely, and straightly.

汽车定位子系统以GPS卫星定位为主、航位推算为辅进行汽车定位；嵌入式硬件平台进行系统控制、数据采集和处理、导航信息输出；嵌入式汽车自主导航软件通过汽车定位子系统，实时解算出车辆的地理位置、速度、方向等信息，并根据需求自动演算最佳行驶路线，在行驶过程中实时进行导航处理，同时将这些信息通过电子地图和语音提示的方式反映出来，从而引导驾驶员快速、安全、准确地到达目的地。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。