Open loop control
is used to control the speed of the motor by honestly controlling the duty cycle of the PWM signal to drives the motor-drive circuitry.
Designed specifically for the open loop control
of stepper motors sized Nema 17 to Nema 34, Nanotec Electronic GmbH & Co.
However, the gain of the open loop control
system is adjusted by a feedback control of the frequency signal, so that the whole open loop gain crosses the 0 dB point at the desired switching frequency.
This type of motor is characterized by a particular structure similar to that of the rotary stepper motor and it is widely used in open loop control
Nevertheless, the approach does present a remarkable advantage towards a traditional open loop control
11a standard is intended to provide reliable and secure wireless operation for non-critical monitoring, alerting, supervisory control, open loop control
, and closed loop control applications.
MAE[R] brand hybrid stepper motors from AMETEK Technical & Industrial Products are engineered to deliver open loop control
for high-performance positioning.
MAE[TM] "Y Series" hybrid stepper motors are designed to deliver accurate open loop control
for high-performance positioning applications.
The open loop control
corrects the VCO input digital control data using a memorized digital calibration.
Compared to feedback control," Cunefare said, "our dither system would be an open loop control
system in which we won't need to detect the presence of squeal.
Features include heat/cool PID control, closed or open loop control
, a single universal input, a full range of output options, ramp to set point operation and versatile alarms.
The patent encompasses an open loop control
method for controlling electric motors and optimizing their energy use.