German Erhardt+Leimer sensor Erhardt+Leimer model Erhardt+Leimer price

Erhardt+Leimer sensors, also known as torque sensors, torsion sensors, torque meters, are divided into two main categories: dynamic and static. Dynamic torque sensors are also referred to as torque sensors, torque-speed sensors, non-contact torque sensors, and rotary torque sensors. Torque sensors detect the twisting moment on various rotating or non-rotating mechanical components. They convert the physical changes in torque into precise electrical signals. Torque sensors can be used in the manufacture of viscometers, electric (pneumatic, hydraulic) torque wrenches, offering advantages such as high precision, fast frequency response, good reliability, and long service life.

Erhardt+Leimer Sensor Classification

1) Contact Sensors: The contacts of contact sensors are activated by the contact and compression of two objects. Common examples include limit switches and two-dimensional matrix position sensors. Limit switches have a simple structure, reliable operation, and low cost. When an object moves and hits a limit switch, its internal contacts activate to complete control. For example, if limit switches are installed at both ends of the X, Y, and Z axes of a machining center, the movement range can be controlled. Two-dimensional matrix position sensors are installed inside mechanical grippers to detect the contact position with an object. 2) Proximity Sensors: A proximity switch is a switch that emits an "action" signal when an object approaches within a set distance, without requiring direct contact. There are many types of proximity switches, mainly including electromagnetic, photoelectric, differential transformer, eddy current, capacitive, reed switch, and Hall effect types. The application of proximity switches on CNC machine tools mainly includes tool selection control for the tool holder, worktable travel control, and piston stroke control for oil and air cylinders.

Erhardt+Leimer Sensor Working Principle

Crankshaft position sensors are typically installed at the front end of the crankshaft (at the pulley), at the rear end near the large flywheel, or in the middle of the crankshaft. Early models were also installed inside the distributor. It is one of the most important sensors in the control system. Its functions include: detecting engine speed, hence it is also called a speed sensor; detecting the top dead center (TDC) position of the piston, hence it is also called a TDC sensor, including detecting the TDC signal for each cylinder used for ignition control and the TDC signal for the first cylinder used for sequential fuel injection control.

Erhardt+Leimer Sensor Industry Applications

1) Brushless DC Motors: The position sensor is one of the three main components of a brushless DC motor system and is the main feature distinguishing it from brushed DC motors. Its function is to detect the position of the main rotor during motion, converting the position signal of the rotor magnet poles into electrical signals. This provides correct commutation information to the logic switching circuit to control their conduction and cutoff, causing the current in the motor armature windings to commutate sequentially with the change in rotor position. This forms a stepwise rotating magnetic field in the air gap, driving the permanent magnet rotor to rotate continuously. Brushless DC motors require position sensors to measure the rotor position. The motor controller uses the position sensor signals to synchronize the inverter commutation with the rotor, driving the motor to operate continuously. Although brushless DC motors can also detect rotor position via the back electromotive force generated by the stator windings, thereby eliminating the need for position sensors, the rotational speed is too low during motor startup, and the back EMF signal is too weak to be detected. Hall effect sensor chips used as position sensors for brushless DC motors are divided into switching and latching types. For e-bike motors, both types of Hall sensor chips can be used to accurately measure the position of the rotor magnets. The performance of brushless DC motors made with these two types of Hall sensor chips, including output power, efficiency, and torque, shows no difference, and they are compatible with the same motor controllers. The application of position sensors reduces motor operating noise, improves motor life and performance, and achieves energy savings. The application of position sensors undoubtedly provides a strong impetus to the development of the motor market. 2) Crankshaft and Camshaft: The function of the position sensor is to collect the crankshaft rotation angle and engine speed signals and input them into the electronic control unit (ECu) to determine the ignition timing and fuel injection timing. To distinguish it from the crankshaft position sensor (CPS), the camshaft position sensor is generally denoted by CIS. The function of the camshaft position sensor is to collect the position signal of the camshaft and input it to ECU, so that ECU can identify the compression TDC of cylinder 1, thereby performing sequential fuel injection control, ignition timing control, and knock control. In addition, the camshaft position signal is used to identify the first ignition timing during engine start-up. Because the camshaft position sensor can identify which cylinder's piston is about to reach top dead center, it is called a cylinder identification sensor.

Weidou Intelligent Technology specializes in selling German Erhardt+Leimer sensors, Erhardt+Leimer proximity sensors, Erhardt+Leimer distance sensors, Erhardt+Leimer vision sensors, Erhardt+Leimer displacement sensors, Erhardt+Leimer torque sensors, Erhardt+Leimer speed sensors, Erhardt+Leimer photoelectric sensors, Erhardt+Leimer position sensors, Erhardt+Leimer angle sensors, Erhardt+Leimer tactile sensors, Erhardt+Leimer temperature sensors, Erhardt+Leimer pressure sensors, Erhardt+Leimer flow sensors, Erhardt+Leimer level sensors, Erhardt+Leimer motion sensors, Erhardt+Leimer process sensors. Original imports from Germany. Welcome inquiries and orders from users.