M Rutty has announced its exiting new range from FAS Technology and is delighted to introduce the Ezi-SERVO.
The Ezi-SERO is an innovative closed loop stepping motor controller that utilizes a high-resolution encoder to constantly monitor the current motor shaft position. With the encoder feedback feature, the Ezi-SERVO keeps updating the current position information every 25 micro seconds. If necessary, the Ezi-SERVO takes a corrective action to compensate the loss of synchronization, for example, due to a sudden load change, eliminating missing step error, which is a typical drawback with stepping motors.
NO GAIN TUNING
In order to improve a control performance, tuning the gains of a servo system is the most crucial step. Depending on the source of a load change, this is a long, tedious, troublesome, and time-consuming job for an application field engineer. The Ezi-SERVO fully employs the unique characteristics of the closed loop stepping motor control, eliminating these cumbersome steps and giving the engineer a similar satisfaction with a high performance servo system. Especially, Ezi-SERVO is well suited for low stiffness loads (for example, a belt and pulley system) that are common problems experienced in a most servo system, while still maintaining the best performance in all situations.
NO HUNTING
Contrary to a traditional servo motor drive, there is no problem of hunting in the Ezi-SERVO that utilizes the unique feature of stepping motors. After reaching a desired target position, Ezi-SERVO does not experience a fluctuation of motion. This is feature is especially useful in an application such as vision systems in which vibration could be a problem.
SMOOTH AND ACCURATE
Ezi-SERVO is a high-precision servo drive, using a high-resolution encoder with 10,000 pulses/revolution. Further, unlike a conventional microstep drive, the on-board high performance DSP(Digital Signal Processor) performs a vector control and filtering, realizing a smooth rotational control with minimum ripples.
FAST RESPONSE
Similar to conventional stepping motors, Ezi-SERVO shows good synchronization with commanding pulses and realizes a short and fast response in a positioning action, Thus, it is a great feature of Ezi-SERVO when rapid motions with a short distance are required. For the case of traditional servo motor systems, there is a considerable delay between the commanding input signals and the resultant motion because of the constant monitor of the current position, necessitating a waiting time until it settles, called settling time.
Compared with common step motors, Ezi-SERVO can maintain a high torque state over relatively long time periods. Since it is possible for the drive to continuously operate without loss of synchronism under 100% load, there is no need to concern the load-tolerance, opposing to conventional microstep drives. Ezi-SERVO exploits high-torque in high-speed regime owing to the innovative optimum current phase control in accordance with rotational speeds.
The Ezi-SERVO behaviors equally well at high speed without loss of synchronism. The ability of continuous monitor of current positions enables a stepping motor to generate high-torque even under a 100% load condition.
Since the drive controls the operating current depending on there variation of a load condition, it is possible to reduce the heat generation, in turn improving the efficiency.
|
