PSI - Issue 32

A.V. Churkin et al. / Procedia Structural Integrity 32 (2021) 273–276 A.V. Churkin , Yu.V. Ganziy, V.B. Dementev / StructuralIntegrity Procedia 00 (2019) 000 – 000

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The aim of the work is to build a control system for a diagnostic stand of uniaxial compression using digital devices of the ZETSENSOR series [2] and a set of hardware and software capabilities of ZETLAB and ZETView [3,4]. 2. Hardware Description The hardware of the stand is a combination of mechanical and electrical subsystems. The basic mechanical unit of the installation is a deforming unit of single-axis compression (Fig. 1). The unit is made in the form of a hollow body of the press 5 installed on the base 3 with a screw cover of the press 6.The latter fixes the position of the guide 8 of the sensor 7 inside the hollow body of the press 5. Inside the guide 8, the upper and lower holders 10 of the sample 9 are placed. Moreover, the lower holder 10 rests with one end against the sample 9, and the other on the wedge 4 connected to the drive motor 1 through the gearbox 2. Top 10 holder in turn one end rests on the sample 9, and the other interacts with the force sensor 7, registered the force on the sample 9 in the process of movement of the wedge 4. Design deforming unit has a high stiffness (104 MN/m), supported by the optimal choice of the geometric parameters of the wedge 4 and lack of screw elements, typically used for moving crosshead Electromechanical presses.

Fig. 1. Deforming unit with loading drive where 1 - Motor with bracket, 2-Gearbox with bracket, 3-Press base, 4-Wedge, 5-Press body, 6-Press cover, 7-Sensor, 8 - Sensor guide, 9-Sample, 10 - Sample holder, 11-Installation base. The hardware of the electrical part of the installation is based on the use of digital ZETLAB data acquisition and control modules that interact on the basis of the CAN 2.0 interface and provide high noise immunity of the control system from electromagnetic interference. The diagnostic stand is controlled from the operator's automated workplace, which is made in the form of a personal computer and a control program developed using the visual programming environment ZETView [4]. The functional diagram of the installation is shown in Fig. 1. The operator's automated workplace is connected via the LAN network protocol to the control cabinet and the ZET 7176 Ethernet ↔ CAN interface converter, which is used to interact with the ZE TLAB digital sensor-based information acquisition and control system. The bandwidth allows you to execute commands without delay and transfer large amounts of data. The control system, based on the ZET 7160-s module and the HBS 57 driver, interacts with the servo-stepper motor 57 HSE of the bench loading drive, providing software control of the parameters of the wedge movement of the 4 deformation unit.