Ⅰ.Introduction

The measurement and control system uses a high-precision digital servo valve with force closed-loop control functionality, capable of achieving constant load rate loading or constant stress rate loading. It offers high control accuracy and good reliability. The system uses a microcomputer for electronic measurement, automatically performs compressive strength tests, and automatically calculates and prints reports. It is widely used in the construction industry and testing organizations.

Ⅱ、 Hydraulic System

The hydraulic oil in the oil tank is driven by a motor and high-pressure pump into the oil circuit, flowing through the check valve, high-pressure oil filter, pressure differential valve group, and servo valve before entering the cylinder. The computer sends control signals to the servo valve, controlling the opening and direction of the servo valve, thus regulating the flow into the cylinder to achieve constant speed control of the test force.

III.  Force Measurement System

• Uses a high-precision amplifier and A/D converter with no range switching, providing real-time display of load, peak value, loading speed, and strength.

• Implements constant speed loading with a PID closed-loop control strategy, providing real-time display of the loading curve.

• Automatic interval timing and continuous testing.

• Flexible and convenient query and printing of test results.

IV. Software Description

（1）Main Interface

（2）Result Query

（3）Report Template

V. Safety Protection Devices

When the test force exceeds 3% of the maximum test force, overload protection is triggered, and the oil pump motor stops.

VI. Main Performance and Technical Specifications

VII.Standard Factory Configuration List

VIII.  Confidentiality of Technical Information and Documents

1. This technical proposal is part of our company’s technical documentation. The user is obligated to maintain the confidentiality of the technical information and documents provided by us, whether this proposal is adopted or not. This clause remains effective indefinitely.

2. We are also obligated to maintain the confidentiality of the technical information and documents provided by the user.