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Three -dimensional model of drag-bar for 2BQ -2 planter was developed through Pro /E the model was then transferred into ANSYS for analysis, and modal parameters of the drag-bar were calculated, natural frequency and vibration features of the drag-bar were determined. Modal frequency was concentrated...

This paper has introduced the main characteristic and some current re-searches about the inverted pendulum system. A nonlinear mathematical model of invert-ed pendulum is established based on the newtonian dynamics method. Then the design of traditional fuzzy controller is presented, the result of simulation...

The whole system is composed of STM32 embedded system module, gyroscope MPU 9150 module, DC Blower module,trestle module,power module, LED and LCD display module, key mode selection module,alarm module.Wind pendulum control system is based on STM32 embedded system, using STM32 as control system,using...

Fuzzy control theory is a computer numerical control theory based on fuzzy set theory, fuzzy language variable and fuzzy logic reasoning. It is widely used for it doesn’t require exact mathematical model of controlled object in system design, so that fuzzy control has an advantage in researching high...

The nonlinear torsion vibration of the three wire pendulum has been studied in this paper. The differential equation of movement of suspension disc has been obtained by theoretical analysis. The vibration curve and phase diagram have been gained by solving the differential equation numerically. It is...

The inverted pendulum is a multivariable, rapid, nonlinear unstable system. LQR optimal control is often used in inverted pendulum control for its good stability. According to optimal determination problem of the weighting matrix Q and R in LQR, an improved hybrid genetic algorithm is adopted in LQR...

In this paper, a sliding mode controller based on new type of approach law is applied to double inverted pendulum(DIP) in order to weaken the chattering and shorten the approaching time, ensure the system to achieve better dynamic quality and stabilize the DIP system around equilibrium states. Further,...

With the mass production of cars and utilities, the incidence of car accidents is increasing, while the case of car accidents in a variety collision probability is highest. The theory of the explicit nonlinear finite element which is adopted in the crash simulation is expounded. According to the European...

In this paper, we investigate the dynamics of an inverted pendulum with two concentrated masses. The perturbation method is used to find the transition curves. We emphasize the difference between the case of two concentrated masses and that of one concentrated mass. Numerical simulations are carried...

This article took the type of 6900 passenger car as an object reference, referred protection of the occupants in the event of a frontal collision (ECE R94) and protection of the occupants of the cab of commercial vehicles (ECE R29). Through the analysis of the initial energy when the bus was collision...

Inverted pendulum control system is a complex, nonlinear, unstable system. This design on the basis of studying the law of motion of the inverted pendulum, build its trajectory mathematical model, using MATLAB simulation analysis Based on mathematical modeling and simulation, according this build the...

General pseudospectral method is extended to Lie group by virtue of equivariant map for solving rigid dynamics on Lie group. In particular, for the problem of structural characteristics of the dynamics system can not be conserved by using general pseudospectral method directly on Lie group, the differential...

In this study, a series of corrosion tests are performed on 12 sliding pairs under complex marine environment and earthquake. Periodic-salt-spray accelerated corrosion test and wet-and-dry-cycle accelerated corrosion test are used to simulate the splash zone and atmospheric zone for an sliding pair....

This paper sets the mathematical model of the single inverted pendulum,and analyzed the imperfection of PID control algorithm for inverted pendulum. Based on this case,the neural model reference control method is discussed in the paper.With the design of the inverted pendulum system with a model-reference...

There are much inexhaustible clean energy in the ocean. Toÿgenerate electricity by using ocean energy can improve energy structure and be good for the environment. Existing wave energy converters have many disadvantages. So we designed a novel pendulum wave energy converter Combined of the Wind and Solar...

This paper presents a new teaching platform for the inverted pendulum based on MATLAB-DSP integrated development environment. The teaching platform shows some advantages, including high efficiency, low cost, friendly interface and the function of testing dynamic process and rework parameters on line....

According to Generic Fanuc 5X Mill.pst post processing document and the discussion on modification method of main parameters of X Master CAM version five axes machining with double pendulum head, this paper compares manual calculation data of holes nodes with the automatic generation program after modification,...

line Self-tunable PI-type fuzzy inference system with application of control approach to nonlinear system. In this paper, we describe a neuro-fuzzy controller as a STFIS (Self Tuning Fuzzy Inference System) optimized online using the rules of Takagi-Sugeno type, and a back propagation learning algorithm...

In a given clock mechanism, the tolerances of its structural parameters often cast profound influences to the accuracy of the timing output. In this paper, the tolerances of the clock mechanism parameters are studied to explore its influence on timing. Through 3D modelling of the proposed clock mechanism...

Chinese traditional wooden structure, applied to the foundation column directly above is the main form of connection between the column node, without any connection between the vertical support column, and base and foundation provides only horizontal friction. Gold box bucket bottom slot hall-type building...

Chinese traditional palace is an important component of traditional architecture. Gold box bucket bottom slot hall-type building is a kind of the highest rank traditional architecture in China. The main structure consist of frontal column layer, tile layer and roof layer, in which, the connection between...

In this paper “the plane bifilar pendulum model” is proposed to understand excessive lateral vibration of a suspension footbridge under crowd excitation. We use a plane bifilar pendulum to describe a suspension bridge by considering its structural features, which consists of two strings and a central...

Inverted pendulum is a typical automatic control device. It not only establishes its dynamic model, but also constructs its transfer function, and studies its poles and stability conditions. PID is used to control its movement, through a lot of experiments, the corresponding data sent to the host computer,...

Hierarchical fuzzy sliding-mode decoupling control method is adapted in this paper, and the nonlinear system of a double inverted pendulum is decoupled into several subsystems, an adaptive law based on the Lyapunov function is used to tune the coupling factor of the hierarchical sliding-mode controller,...

In recent years, drones have been widely used in various industries and have played a significant role. However, with the popularization of civilian drones, the safety issues brought about by drone “black flying” should also be given sufficient attention. Good drone signal detection technology is a prerequisite...

In the present paper we investigate the rotational oscillations of the nitrous bases that form a central base pair in a short DNA fragment consisting of three base pairs. For this purpose we use a simple mechanical model of the DNA fragment where the bases are imitated by pendulums, and the interactions...

Control from the balance of the car is relatively complex, which can be divided into balance, speed and direction of the three control, the balance control in the main, the control is similar to the inverted pendulum, to study its stress, construct its transfer function. MPU6050 is used to measure its...

When the north angle is greater than 400, a certain gyro theodolite of The PLA 1001 Factory can not normally find the North. In this paper, the author deduces a mathematical formula between pendulum gyro in the tracking state speed and the north angle, a coarse north seeking method based on tracking...

Based on the pole placement design technique, a full state feed back controller using separation factor is proposed to stabilize a real single inverted pendulum. The strategy is to start with selection two dominant poles that achieve a certain desired performance, using a separation factor between the...

Control engineering is inherently rich in mathematics and thus through conventional instruction-based learning only, students often have a hard time to learn the concepts of control engineering. To address this issue, this study proposes the integration of simulation-based laboratory practices in control...

With the development of science and technology, active safety of vehicles is receiving more and more attention. Currently, active safety products that have already been developed and applied to vehicles include: ABS (Anti-lock Brake System), ASR (Acceleration Slip Regulation), TCS (Traction Control System),...

To study the cargo motion and sway characteristics of tower cranes to find effective methods to suppress the cargo sway and to position the cargo, we modeled the cargo sway, and then analyzed the equilibrium states of the cargo sway. The research results show that the center line of the cargo pendulum...

this paper designed and developed a new type of rectifier bridge machine, the equipment can efficiently in automatic mode and manual mode to complete the detection and classification of the rectifier bridge, the laser marking and the pendulum work, greatly improving the sorting efficiency of the rectifier...

Owing to its good immersion and interactivity, virtual reality technology has been broadly applied in the field of education. To enhance the experimental teaching of linear control theory, a VR based virtual experiment system was designed and developed using Unity 3D and MATLAB tools. The proposed system...

Titanium alloys can change their phase composition after abrasive processing. Grinding by CBN wheels affects quantitatively the variation in intermetallic compounds into VT22 that can be experimentally confirmed. These changes are positive or negative, depending on the purpose of the titanium part. X-ray...

In this paper we present a real application of computational intelligence. Fuzzy control of a non-linear rotary chain pendulum is proposed and implemented on real prototypes. The final aim is to obtain a larger region of attraction for the stabilization of this complex system, that is, a more robust...

The problem of ensuring the stability of a multivariable automatic control system which consists of statically and dynamically unstable objects must be managed when solving applied problems. In theoretical terms, this problem is worked out poorly and there are no practical recommendations for its solution....

To solve the design problem of variable trajectory maneuver of target missiles, an integrated design model of variable trajectory maneuver is presented. By closely cooperating between the control signals of displacements and the control signals of overloads, this integrated design model can make target...

Inverted pendulum system is a kind of widely used physical model. In this paper, we present a nonlinear control scheme of single inverted pendulum system based on extended state observer. First, we establish the dynamic equations of inverted pendulum under a generic horizontal force and then linearize...

A physical pendulum experiment now becomes essential in Physics Education. A physical pendulum consists of a rigid object, with a particular shape and size, swung by a pivot point on the object. One of the often-overlooked requirements in measuring practice by this experiment is the small angular displacement....

A energy-absorber device with gravity pendulum of car seat headrest is introduced in this paper, and has a analysis at the dynamic characteristics of headrest by use the method of three component-force detection. A force measuring system from the three component-force detection is brought up to reseach...

Control algorithms development for humanoid locomotion is difficult due to humanoid’s high number of Degrees of Freedom and system nonlinearity. Moreover, a humanoid may lose balance as its walking speed changes. We present AR-601M humanoid locomotion modelling with virtual height inverted pendulum and...

Self-balancing robots are a significant group of autonomous systems that capture the classical inverted pendulum problem, and as such, they are both a control design benchmark and a real-world mobile robot platform. This work describes the development and construction of an affordable two-wheeled self-balancing...

Two methods were used to study the aperiodicity of a double pendulum based on its chaotic behavior: approximate entropy and maximum Lyapunov exponents. These methods were applied to analyze the aperiodicity of a signal obtained from the angular velocity of the first pendulum. The nonlinear system of...

Project-Based Learning (PBL) is a new teaching method which is characterized by projects and students as main part, widely used in theory teaching and practice teaching. This paper analyzed advantages, methods, principles and problems of PBL. We have conducted in-depth research on PBL theory and put...

It is shown that the nonlinear pendulum equation can be transformed into a linear harmonic oscillator in the phase space thanks to Kerner’s method [12]. Moreover, as a mathematical divertissement, the second-order differential equation determining the phase-space trajectories of the nonlinear pendulum...

With the practical application of silicon micro-machined gyro driven by rotation aircraft, it is found that the rotation aircraft’s rudder surface vibration significantly influences the performance of the gyro. In this paper, as the background of the silicon micro-machined gyro, the vibration mechanism...

Author found that the micro-mechanical pendulum mounted on a rotating body has gyroscopic effect, which can be sensitive to yaw, pitch and spin angular velocity of the rotating body at same time. It has the function of the three traditional gyro. This paper reported the principle of micro-mechanical...

Two types of measurement methods are given to determine the low impulse involved in the working process of pulsed electromagnetic plasma thrusters. Different mechanical devices, including pendulum and critical stress thrust stands, are introduced and compared with others concomitant with respective typical...

In order to meet the normal use requirements of the student dormitory building under the action of fortification intensity earthquake, the friction pendulum seismic isolation design was adopted in this project, and the response spectrum analysis and time history analysis under the action of fortification...