Motion Applications
Precision Torque Control means control of motors for the purpose of measuring, or applying, a precise torque or force. Precision torque control is used in a wide array of industries and machines including bottle cap applicators, torque wrenches & screwdrivers, hardness measuring equipment, and more.
In this Motion Application:
- Explore Design Considerations & Techniques
Motors, particularly DC Brush and Brushless DC motors, are increasingly used to deliver or measure precise amounts of torque or force. The reason for this is that modern electronics allow the amount of current flowing through the motor to be commanded, and controlled, very accurately. Therefore, the amount of torque generated by the motor is similarly controlled. This method of torque generation and control is called Direct Motor Torque Output. Both rotary and linear motors can be used in the torque control application although rotary motors are far more common. - Examine Application Architecture
The diagram shows the control flow for a typical high performance digital switching amplifier with leg current sensing. Such an amplifier architecture, coupled with a PI-based current loop controls and a calibration procedure for sensing resistors and A/Ds can provide high accuracy current control and therefore highly precise torque control of rotary and linear BLDC motors. - View Motion Control Solutions
Since 1992 Performance Motion Devices motor control ICs and drives have been used in precision torque control applications due to their unique combination of high performance and and low cost. PMD’s MC53113 Brushless Motor Control IC, which provides high performance current control, is ideally suited for precision torque control applications as is PMD’s MC73112 BLDC Torque Control IC. PMD’s N-Series ION Digital Drive represents a ready-to-go solution in a PCB-mountable module format which excels in precision torque control applications.
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