A device which converts mechanical force and motion into hydraulic
The acceleration and deceleration of a motor. May also refer
to the change in frequency of the applied step pulse train.
Torque: The torque producing capacity of a motor at a given
speed. This is the maximum torque the motor can deliver to a load
and is usually specified with a torque/speed curve.
Circuit: An electronic signal of constant frequency and amplitude
that has varying pulse width to control the level of power to the
Usually refers to a circuit in a drive amplifier that accepts and
drains energy produced by a rotating motor either during deceleration
or free wheel shutdown.
Move: Changing the predefined move profile that is being executed,
to a different predefined move profile following receipt of an input
The degree to which the positioning accuracy for a given move
performanced repetitively can be duplicated.
The smallest positioning increment that can be achieved,. Frequently
defined as the number of steps required for a motor's shaft to rotate
one complete revolution.
A feedback device with a construction similar to a motor's construction
(stator and rotor). Provides velocity and position information to
a drive's microprocessor or DSP to electronically commulate the
Designates the condition resulting from energizing a motor at
a frequency at or close to the motor's natural frequency. Lower
resolution, open-loop systems will exhibit large oscillations from
Logic: A system for controlling a machine or process based on
the status of various interconnected relay.
To add fluid to maintain a full hydraulic system.
A container for storage of liquid in a fluid power system.
An electromagnetic feedback device which converts angular shaft
position into analog signals can be processed in various ways, such
as with an RDC (resolver-to-digital converter) to produce digital
position information. There are two basic types of resolvers, transmitter
and receiver. A transmitter type is designed for rotor primary excitation
and stator secondary outputs. Position is determined by the ratio
of the sine outputs amplitude to cosine output amplitude. A receiver
type is designed for stator primary excitation and rotor secondary
output. Position is determined by the phase shift between the rotor
output signals and one of the primary excitation signals.
The opposite to current flow offered by the component of an
Line: A line used to carry exhaust fluid from the actuator back
Actuator: A device for converting hydraulic energy into rotary
motion-a hydraulic motor.
Oscillation of a system following a sudden change in state.
Torque: For an intermittent duty cycle application, the RMS
Torque is equal to the steady state torque that would produce the
same amount of motor heating over long periods of time.
A data communications standards that encodes a string of information
on single line in a time sequential format. That standard specifies
the proper voltage and time requirements so that different manufactures
devices are compatible.