Servo systems are used when the application calls for precise control of position, velocity, or torque — or a combination of the three. Depending on the parameter being controlled, the servo system can be operated in torque mode, velocity mode, or position mode. Each mode requires control loops that allow the servo drive and controller […]
Trinamic introduces small, lightweight servo controller module
TRINAMIC Motion Control introduces the TMCM-1617, single-axis servo controller module, designed for servo drives with 18A RMS and 8 to 28V dc supply voltage. The TMCM-1617’s EtherCAT, CAN and RS485 interfaces, ultra-lightweight aluminum housing (conforms with DIN EN 60529), and a cutting-edge feature set make the TMCM-1617 an ideal choice for medical, aerospace, and robotics. […]
New series of servo products from Mitsubishi Electric Automation
Mitsubishi Electric Automation, Inc. has released its next generation MELSERVO-J5 Series of ac servo motors, amplifiers, and motion control units. The MELSERVO-J5 Series brings performance, reliability, flexibility and efficiency to a wide range of industries, including manufacturing, packaging, printing, converting, material handling and more. MELSERVO-J5 is a result of continuous innovation and improvement upon the […]
Motion system design: Can a servo-driven machine be too stiff?
When we think of stiffness, we often think of mechanical stiffness — the ability of a part or system to resist deflection. But in servo-driven motion systems, stiffness can also refer to how the system is tuned — that is, how the gains in the servo controller are set and, correspondingly, how the motor responds […]
Servo amplifier with multi-network interface from Mitsubishi Electric
The MR-J4 servo amplifier series from Mitsubishi Electric incorporates a multi-network interface called “Servo Open Network”. It enables the user-friendly drive to be compatible with all relevant motion control systems worldwide. Machine manufacturers who offer their solutions globally will benefit from the open network connection feature of the MELSERVO MR-J4 amplifier series. Communications is simplified […]
What is a motor choke and why is it used?
A choke is a passive device that adds inductance to a circuit. Inductance is a property of a coil of wire that resists any change to the current flowing through it. (Straight wires also possess a small amount of inductance.) In other words, if current through the coil increases, the magnetic field of the coil […]
New control functions for model-based control servo drive from B&R
B&R has extended its model-based control for the ACOPOS P3 servo drive to include three new control functions. The functions are integrated into B&R’s Automation Studio engineering environment and allow the controller to be adjusted more precisely. This way, machine productivity and speed can be increased. Vibrations and oscillations decrease, so that machine components are […]
What is a motion profile?
Servo applications require defined, controlled movements, often to move a part to a specified position at a precise velocity or along a predetermined path. A motion profile provides the physical motion information and graphically depicts how the motor should behave during the movement (often in terms of position, velocity, and acceleration) and is used by […]
What is hunting in the context of motion control and how is it addressed?
When a linear or rotary axis must follow a predefined move profile to reach or maintain a precise position, speed, or torque, a closed-loop servo system is often the best choice. Feedback from an encoder — mounted on the motor or directly on the axis — provides information regarding the system’s actual state (position, speed, […]
Video: Yaskawa GA800 ac drive for industrial applications
In a recent Design World video with my super-smooth colleague Mike Santora, I got the chance to play with a GA800 ac drive demo from Yaskawa America Inc. This VFD includes network communications, embedded functional safety, and easy-to-use tools (including a smartphone app) for configuration and remote access. Yaskawa sent us a sample of the […]
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