In this article we will teach you What are LVDT types?, What is a differential transformer?, How does a linear variable differential transformer work?
What are LVDT types?
Types of LVDT include AC LVDT and DC LVDS, which differ based on their power requirements and signal conditioning. AC LVDTs require an external AC excitation source and are typically used in environments where high accuracy and resolution are required. DC LVDTS, on the other hand, has built-in electronics that convert the AC signal to a DC output, simplifying signal processing and making them more suitable for applications requiring easy integration with digital systems.
LVDT stands for Linear Variable Differential Transformer, a type of electromechanical sensor used to measure linear displacement. The main types of LVDT are based on their power and signal processing requirements, which include AC LVDT and DC LVDS. AC LVDTS requires an external alternating current source to excite and ensure high precision and reliability. DC LVDTS integrates internal electronics to generate DC output, making them easier to interface with modern digital systems.
What is a differential transformer?
LVDTs are used in a wide range of applications where accurate measurement of linear displacement is required. Common uses include industrial automation, robotics, aerospace and civil engineering. In industrial automation, LVDTs are used to monitor the position of machine components. In aerospace, they measure control surface positions. In civil engineering, they monitor structural movements and deformations. Their accuracy and reliability make LVDTs ideal for environments requiring precise and continuous position feedback.
How does a linear variable differential transformer work?
The function of LVDT is to measure linear displacement with high precision and reliability. It works by converting the linear motion of a core in its coil assembly into an electrical signal. This signal is proportional to the displacement and can be used for monitoring, control and feedback purposes in various applications. LVDT provides non-contact measurement, which eliminates wear and ensures long-term stability and repeatability.
The sensor used in an LVDT is essentially the coil assembly, which includes a primary winding and two secondary windings positioned symmetrically around a moving core. The primary winding is excited by an AC voltage, and the movement of the core induces voltages in the secondary windings. The differential voltage between the secondary windings is proportional to the displacement of the core, providing the measurement output. This coil assembly acts as the sensing element, converting mechanical movement into an electrical signal.
We hope this overview helps you What are LVDT types? was clear.
