Stepper motor stall detection

Anything from adaptive head lamp leveling and HVAC blend door. This application note introduces Freescale. ELMOS has the competence to integrate this function into . Technique takes advantage of constant motor parameters and overcomes limitations of traditional stall detection methods of current and duty-cycle sensing.

Pulse Width Modulation (PWM) Microstepping Motor Driver.

One example is the synchronization of the pointer position on an instrument gauge.

Methods for synchronization can vary, but some commonly .

Drives External N- Channel MOSFETs. Optional PWM Control Interface for DC Motors. Flexible Decay Modes, Including Automatic Mixed. An innovative technique takes advantage of constant motor parameters and overcomes the limitations of traditional stall - detection.

However, the final project will need the motor to run reliably for three months straight. The device drives bipolar stepper motors with high-efficiency and smooth operation. Micro- stepping is the preferred mode to provide low-noise operation since this technique eliminates the effects of mechanical resonances, which can lower the motor torque. A motor stall detection capability allows position alignment . Without an external sensor such as an encoder, the EM8stepper drive can automatically identify 1 of stall of driven motors at 3RPM or above, and send fault signals back to motion controller or other devices The EM8stepper drive also adopts advanced features like electrical damping, anti-resonance, start -up . The stepper motor coil currents . Single Axis Closed Loop Intelligent.

The drive is not limited to stall detection or end position correction but provides continuous closed loop servo performance. Stall detection is not reliable at low motor speeds. It would typically give false stall indications at low speeds.

To avoid this, the firmware allows you to set minimum speeds (in motor full steps per second) below which stall indications will be . PATENTED FEATURE FOR STEPPER MOTORS. STALL DETECTION : Applications. However there are many different uses of stallGuard like load detection and load dependent motor current control (coolStep).

Stepper Motor Driver and Controller with I2C Bus, Microstepping Features and Stall Detection. PACKAGE: 20-Pin TSSOP with Exposed Thermal Pad (suffix LP). Configurable through serial interface.