development of a shaking table in electro hydraulic servo

Development of the Shaking Table--《Earthquake
The development of the shaking table from single mechanical machine to 3-Dimension hydraulic servo system is presented in the paper.The developing trend of the shaking table is also proposed for the potential applications,which include the large full-scale shaking table tests,the multiple-shake-table tests and the tests with full digital control system.
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Development of the Shaking Table and Array System ...
2019-7-30 · servo shaking table but rarely hooked into multiaxis shaking table [15–20]. And, foreign shaking tables were ... Electro-Hydraulic Servo Simulation and Test System of HarbinInstituteofTechnology(HIT)developedsuccessfully ... ’e development trend of shaking table in China. Table 1: Shaking table construction in China. Time Sector Dimension
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Development of a double-layer shaking table for large ...
2022-1-20 · It is difficult to conduct shaking table tests that require large-displacement high-frequency seismic excitation due to the limited capacity of existing electrohydraulic servo systems. To address this problem, a double-layer shaking table (DLST) is proposed. The DLST has two layers of one table each (i.e., an upper table and lower table) and aims at reproducing target
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Servo System of 6 DOF Electro-hydraulic Shaking Table ...
Electro-hydraulic shaking table (EHST) is a useful experimental apparatus to real-time replicate the desired acceleration vibration signal for evaluating the performance of the tested specimen structural systems. A three axis six degree-of-freedom (DOF) EHST system with eight hydraulic actuators is presented in the paper. A decouple control method is employed to lower the
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Servo System of 6 DOF Electro-hydraulic Shaking Table ...
2012-1-31 · Electro-hydraulic shaking table (EHST) is a useful experimental apparatus to real-time replicate the desired acceleration vibration signal for evaluating the performance of the tested specimen structural systems. A three axis six degree-of-freedom (DOF) EHST system with eight hydraulic actuators is presented in the paper.
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(PDF) Servo System of 6 DOF Electro-hydraulic Shaking Table
Electro-hydraulic shaking table (EHST) is a useful experimental apparatus to real-time replicate the desired acceleration vibration signal for evaluating the performance of the tested specimen ...
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3. DESCRIPTION OF SHAKING TABLE SYSTEM
2018-9-25 · directional electro-hydraulic shaking table facility. The initial design concept consisted of a rigid platform sliding over a near frictionless linear bearing system and driven by an actuator attached to a reaction mass. Figure 3.1 illustrates the final design of the uni-directional electro-hydraulic shaking table.
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Development of the Shaking Table and Array System ...
2019-4-10 · Development Trend of Shaking Table and Array System. 4.1. Maximization. According to the size of mesa, shaking tables can be divided into large, medium, and small ones; in general, specimen size less than 2 m × 2 m for the small, 6 m × 6 m for the medium, and over 10 m × 10 m for the large.
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DEVELOPMENT OF HIGH FLOW, HIGH PERFORMANCE
1999-12-4 · Accelerating a table of such size with a specimen greater than 1000 ton would require a large number of high force hydraulic actuators with precise servovalve control. MTS Systems Corporation has completed development of a new class of high flow, high performance hydraulic servovalves to support super large scale shaking table facilities.
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Development of hydraulically driven shaking table for ...
The hydraulically driven shaking table has been developed for damping characteristic experiments on shock absorbers in this paper. The damping characteristics and corresponding experiments on the double-tube hydraulic absorber are analyzed firstly, and its damping force model is also built.
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Development of the Shaking Table--《Earthquake
The development of the shaking table from single mechanical machine to 3-Dimension hydraulic servo system is presented in the paper.The developing trend of the shaking table is also proposed for the potential applications,which include the large full-scale shaking table tests,the multiple-shake-table tests and the tests with full digital control system.
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(PDF) Servo System of 6 DOF Electro-hydraulic
Electro-hydraulic shaking table (EHST) is a useful experimental apparatus to real-time replicate the desired acceleration vibration signal for evaluating the performance of the tested specimen ...
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Servo System of 6 DOF Electro-hydraulic Shaking Table ...
Electro-hydraulic shaking table (EHST) is a useful experimental apparatus to real-time replicate the desired acceleration vibration signal for evaluating the performance of the tested specimen structural systems. A three axis six degree-of-freedom (DOF) EHST system with eight hydraulic actuators is presented in the paper. A decouple control method is employed to lower the
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3. DESCRIPTION OF SHAKING TABLE SYSTEM
2018-9-25 · directional electro-hydraulic shaking table facility. The initial design concept consisted of a rigid platform sliding over a near frictionless linear bearing system and driven by an actuator attached to a reaction mass. Figure 3.1 illustrates the final design of the uni-directional electro-hydraulic shaking table.
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Development of hydraulically driven shaking table for ...
The hydraulically driven shaking table has been developed for damping characteristic experiments on shock absorbers in this paper. The damping characteristics and corresponding experiments on the double-tube hydraulic absorber are analyzed firstly, and its damping force model is also built.
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Acceleration Harmonics Identification for an Electro ...
2018-6-28 · electro-hydraulic servo shaking table; harmonic distortion 1. Introduction As a great significant testing equipment for engineering research in industry, the electro-hydraulic servo shaking table owns some advantages, such as quicker response speed, higher control precision, higher force-to weight ratio and etc, this make it applied in aerospace,
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Design and development of a seismic shaking table for ...
Earthquake occurrences cause a wide range of destruction and damages to human properties ranging from expensive equipment to infrastructure and buildings. Elastomeric bearings are one of the solutions proposed to minimise the impact of earthquake by dissipating the earthquake ground motions to surrounding through flexible horizontal stiffness. The aim of this project is to design
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基于加加速度的地震模拟振动台控制技术-四川大学期刊社
2018-3-8 · Shaking table test is a direct and effective means of seismic response simulation and seismic performance observation of engineering structures,but because the electro-hydraulic servo shaking table system is complex nonlinear system,the ...
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Improvement of vibration frequency and ... -
2021-3-1 · Shaking tables which are used to generate vibration and test the objects in the vibration environment belong to widely used basic equipment [].Because uniaxial electro-hydraulic shaking tables (UEHSTs) have inherent advantages of large output force and high power density, they are extensively applied in various fields, including constructional engineering [],
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Dynamic Modeling of Shaking Table Based on
This essay focuses on a new type 2-DOF shaking table, which is driven by four hydraulic cylinders. Taking 2-DOF shaking table for example, in order to conveniently and rapidly achieve the control system simulation , using
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Development of the Shaking Table--《Earthquake
The development of the shaking table from single mechanical machine to 3-Dimension hydraulic servo system is presented in the paper.The developing trend of the shaking table is also proposed for the potential applications,which include the large full-scale shaking table tests,the multiple-shake-table tests and the tests with full digital control system.
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Bing Zhang-江苏大学机械工程学院
2020-12-11 · (a) 6-DOF shaking table (b) Test-bed of shock absorber 2.Control and application of electro-hydraulic servo system.The hydraulic servo system has been widely used in the industry. The fatigue test-bed is one typical field, such as the flywheel fatigue test-bed.
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3. DESCRIPTION OF SHAKING TABLE SYSTEM
2018-9-25 · directional electro-hydraulic shaking table facility. The initial design concept consisted of a rigid platform sliding over a near frictionless linear bearing system and driven by an actuator attached to a reaction mass. Figure 3.1 illustrates the final design of the uni-directional electro-hydraulic shaking table.
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Acceleration Harmonics Identification for an Electro ...
2018-6-28 · electro-hydraulic servo shaking table; harmonic distortion 1. Introduction As a great significant testing equipment for engineering research in industry, the electro-hydraulic servo shaking table owns some advantages, such as quicker response speed, higher control precision, higher force-to weight ratio and etc, this make it applied in aerospace,
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Backstepping integral control for hydraulic servo system ...
2. Structure of servo system. The shaking test table is a complex electro-hydraulic servo system, which is composed mainly of an electro-hydraulic system excitation, table body and mesa mechanical system, and sensors and control system. Specimens are mounted on the shaking table, which are excited by the electro-hydraulic system excitation.
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基于加加速度的地震模拟振动台控制技术-四川大学期刊社
2018-3-8 · Shaking table test is a direct and effective means of seismic response simulation and seismic performance observation of engineering structures,but because the electro-hydraulic servo shaking table system is complex nonlinear system,the ...
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Real-Time Acceleration Harmonics Estimation for an
2013-4-29 · For an electro-hydraulic servo shaking table, there are usually various nonlinearities, which cause harmonic distortion of the sinusoidal shaking tests, lowering the control performance. Based on a Kalman filter, an acceleration harmonic identification scheme is developed to provide harmonic information. A linear state space model of the sinusoidal acceleration response is
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OFFLINE TUNING OF SHAKING TABLES - IIT K
2004-7-13 · The shaking table system is mechanically “clean” with low friction, unconstrained actuators and high performance capabilities, thus providing an ideal system for numerically modeling the shake table and servo-hydraulic system. RESONANT SPECIMEN Most specimens tested using a shake table system have resonant force feedback and damping. The
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Dynamic Modeling of Shaking Table Based on
This essay focuses on a new type 2-DOF shaking table, which is driven by four hydraulic cylinders. Taking 2-DOF shaking table for example, in order to conveniently and rapidly achieve the control system simulation , using
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Development of Electro-hydraulic Actuators for Robots
hydraulic circuit of the electro-hydraulic actuator. Table 1 shows the specifications of the electro-hydraulic actuator. The servo motor, hydraulic pump, valve unit, and hydraulic cylinder have been integrated into one unit, thereby forming a compact construction without piping between hydraulic devices. In addition, a closed-circuit configuration
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