- The output of the PID controller is e(t).
- FEM is not the only one numerical method.FEA, BEM, FVM, FDM can be used for the same problem, but the difference is in the accuracy, programming ease, and solution time.
- MapleSim is the combination of Modelica, an open, process-oriented, system-level modeling language.
- The full name of HIL is Hardware-in-the-Loop.
- Controllab was founded in 1995 as a spin-off of the Eindhoven University of Technology by young and enthusiastic control engineers.
- The sensors used in the construction machinery are mostly working at a high sampling rate.
- The larger the steering angle, the faster the azimuth angle changes.
- Kalman filtering is a model-based state quantity estimation method, which has been widely used in the fields of control and navigation.
- Database technology include().
- What are the benefits of the HIL technology of the Controllab company ()?
- Submodule in central part includes ()
- What is the reason of cameras capture images with the characteristic that not all the objects are in focus?
- What is the cause of the large reprojection error?
- How many types of lens distortion can be classified?
- Which of the following problems cannot be solved by the FEA
- Which of the following modules do not exist in the mechanical subsystem?
- Which force depend on the mass of the body and its acceleration()？
- If an object is created in the virtual scene and the object will be animated, what name must be given to the object
- The traditional design process often does not consider what is at the system level
- As a cross-platform numerical analysis and data processing library, ALGLIB supports c++, java, and python.
- It is unnecessary for road maintenance machinery to detect road disease for repairs.
- MBDyn is a free open-source general-purpose Multibody Dynamics analysis software.
- Slider-crank mechanism is mainly used to convert rotary motion to a reciprocating motion or vice versa.
- The CFD software can analyze a range of problems related to laminar and turbulent flows, incompressible and compressible fluids, multiphase flows, and more.
- Using FEA we can identify the weakness of the design accurately
- Meshing (nodes and elements) is nothing but the discretization of a continuous system with infinite DOF (Degree of Freedoms)to a finite DOF
- Compared with manually-operated machines, what are the advantages of automated vehicles?
- OpenModelica is an open-source modeling and simulation environment intended for industrial and academic usage.
- We can use Maplesim’s code generation feature to easily deploy solutions to other programming languages.
- To reduce production costs and production cycles, what do we need to think about during a simulation test?
- The FEM only makes calculations at a limited number of points and then interpolates the results for the entire domain (surface or volume)
- A typical HIL system includes such components ()
- The sensors commonly used in automated operating system groups are ____.
- What analysis does nonlinear analysis mainly refer to?
- Which of the following properties does a virtual 3D object have
- What are the features of the ATV?
- What is the three principal steps of kinematic analysis？
- To accurately describe the model we have introduced the following model
- What describes the position of the points when describing the rigid body attitude?
- What does lens distortion mainly include?
- If you are using MATLAB versions before r2009a, the name of the toolbox for the v-real builder is
- What’s the first step in the basics of construction machinery design procedure?
- In VRML, the x-axis is the horizontal line of the screen, pointing to the right. The y-axis is vertical. What about the Z-axis
- Which statement is wrong for statics analysis？
- The best way to create a virtual scene is to use specialized software. What is the software
- ____ is an information transmission between humans and other machines.
- What kind of file is VRML
- Steps in the Solution of Nonlinear Finite Element Analysis
- Function of chain module
- There are nine nodes in an Element, and each node has six degrees of freedom. How many equations need to be established?
- ____ is a necessary mechanism in automated vehicles, it can manipulate the vehicle to turn by the desired steering angle.
- GNSS provides relatively accurate location information at a higher update frequency, while IMU provides lower accuracy location information at a lower update frequency.
- The total DOFs for a given mesh model is equal to the number of nodes added by the number of DOFs per node.
- The objects within the depth of field are sharp in the image whereas other objects are blurred
- The transformation between coordinate systems contains translation and rotation transformation.
- Simpack is an open-source modeling and simulation environment intended for industrial and academic usage.
- It allows for fewer computations than is possible by hand, especially when it is coupled with multifield systems.
- Following such protocol (the ordinary design flow), the design cycle is too long and exhausted to meet the demands of the market.
- For beginners, the best option is to use the commercial CAE software to generate the code of your virtual model.
- The mechanical arm of the excavator includes the rotating joint and the prismatic joint.
- The simulation of information collection is that this process can be conducted in Visual C++ by programming method.
- An autonomous vehicle must be capable of running along predetermined paths in an open field.
- Computer-aided engineering combines()
- The methods of multi-focus image extraction are as follows
- Which is the latest trend for our designers ()?
- The Manipulator of the excavator is a kinematic chain composed of a series of connecting links.
- The execution mechanism of the autonomous vehicle includes ____.
- We can use DotNumerics to solve an initial-value problem for stiff ordinary differential equations.
- As to the real engineering application, the ethernet bus is worse than the USB bus in speed and data safety.
- Advanced 3D Contact can calculation of dynamic gear meshing forces including microgeometry, tooth deformation and instantaneous misalignment accurately.
- Through simulation, we can simulate what manufacturing resources (including equipment and labor) have?
- The behavior of Objects Game can be controlled by ().
- Which statements about the Experimental Method is 对？
- What are virtual scenes usually made of
- In the situation of excavator, the robot arm composed of ____.
- The benefits of using the HIL system include().
- Which arre examples of multibody systems in modern literature？
- Which of the following statements about FEA theory is correct?
- A few of the popular CAD tools for professional engineers include
- A classic PID control method takes a function of ____ and ____ as input parameters for the controller.
- The advantages of commercial HIL tools include ():
- Which method could not build a virtual model ()？
- What is the first step to creating virtual reality animation using two modeling methods of MATLAB?
- What command can you type in the MatLab command window to reinstall the VRML viewer or editor?
- What is the first benefit of HIL technology ()?
- Which statement about the Numerical Method is wrong
- What images do we need to use to accurately detect all the road hazards in the scene?
- Animation of dynamic models enables people to observe the system, and what is the best benefit
- What commands need to be entered in the MatLab command window to check whether the virtual reality toolbox is installed
- What’s the last step in the basics of construction machinery design procedure?
- Maplesim’s code generation can not generate ()。
- How many internal parameters are there in the changing matrix?
- What is the extension of Virtual Reality Modeling Language (VRML)
- How many steps does it take to create a virtual scene for a cube
- HIL systems are used for testing
- What is the reason for the widespread use of crawler machines？
- Which is not the benefit of the use of electronic controllers ()?
- What is the purpose of camera calibration?
- How many steps does it take to create a Simulink Model
- What is FEA？
- What is the approximate accuracy of Angle extraction?
- PID controller is one of the representative methods in classical control theory which includes controller, actuator, controlled object, sensor, and input, output interface.
- The steering system can adjust its trajectory to the target path continuously by the PID controller.
- Which is the formula of coordinate rotation？
- In the PID controller, the role of the Proportional control is to ____.
- The predetermined path must be a straight-line path.
- With HIL simulation, errors can be found early on and solved early on. HIL simulation is therefore an effective technique to reduce the commissioning time.
- Which is the embedded system or controller in the definition of HIL？
- How many steps in the ordinary design flow ()？
- HIL simulation can be a real money saver when testing expensive machinery.
- The key factors in the simulation part are ()?
- What are the steps in the calibration process？
- What does the detection of road diseases mainly depend on by manual visual observation?
- What is the most commonly used camera imaging model?
- What do the spatial domain-based methods include?
- The function of UAV in the image detection method of road disease is
- Using visualization technology, we can transform complex information into
- According to this paper, to make the virtual scene more realistic, we can change the color, material， and texture of objects in the scene, which need to be carried out several steps？
- What language file is used to describe the virtual scene in MATLAB simulation of 3D animation？
- What is the modeling method using MATLAB？
- What is the definition of simulation in this paper？
- FEA can't do statics analysis.
- FEM is only one numerical method.
- When we do Pre-Processing, what do we need to consider?
- FEA is a numerical method for solving problems of engineering and mathematical physics.
- About the advantages of FEA，choose the right options.
- What modules are included in the mechanical subsystem？
- Based on these FEMS, there are ___ choices in the Adams analysis to define the contact behavior of the gear pair.
- In dynamic analysis, we are concerned only with motion.
- What is the first step in kinematic analysis
- The analysis of planar systems can be considered as a special case of spatial analysis.
- we can conclude that the integration of multiple disciplines is the mainstream market demands of current and future construction machinery design.
- What’s the key point that any enterprises must face and solve?
- Contemporary construction machinery is a kind of product that integrates disciplines in many fields such as
- How many applications in CAE domains?
- Commonly known simulation techniques include
答案:错
答案:对
答案:错
答案:对
答案:错
答案:错
答案:对
答案:对
答案:SQL server###Mysql
答案:Save Time###Enhance Quality###Increase Safety###Save Money
答案:Data flow controller###Data postprocessing
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