Complete H2W PDF Catalog - H2W Technologies, Inc - #29

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Control Loop Configuration
from Setpoint Management
(Rotation Speed Setpoint) from Trajectory Generator_
from Trajectory Generator (Torque Feed Forward)
(Speed Feed Forward)
Trailing Error
Position Controller
Speed Controller
Current Controller
Nsoll
Uq
iq soll
w,
Coordinate Transformation and Pulse Widt Modulation
Xsoll
>6
from Setpoint Management (Position Setpoint)
N
ist
Current Measurement and Coordinate Transformation
(Rotation Speed Actual Value)
Xist
(Position Actual Value)
ist
Revolution Counter
Angle Encoder Output
1. Torque Control
• Ramp (adjustable), limiting the increase of torque. Optimal adjustment adapts the capabilities of the drive, thus eliminating overshoot.
2. Velocity Control
• Filter for command value (adjustable)
• Acceleration profile: trapezoidal or s-curve (adjustable)
• Velocity-torque control combination by second command value
3. Position Control
• Homing procedure using limit switch or limit switch in combination with index of encoder or current rise due to driving to mechanical limits. An offset can be set for zero position.
• Brake signal is generated after delay and remains in a position window (adjustable).
• 16 positions being selected via 4 digital input signals (model IMD: 8 positions); positioning is initiated by digital input signal or from terminal
• Set command position as actual position by digital input signal
• Output signals: positioning completed, homing active, position distance or time required to travel to position
• Position definition in absolute, relative and relative to actual position (shift to absolute positioning is always available)
• Change in position while travelling: ignore / subsequent / immediate
• Speed at destination position can deviate from zero (smooths motion from point to point)
• Torque increment to compensate stick slip effect (adjustable), enhances dynamics for positioning
4. Synchronization
• Velocity
• Position (for enhanced dynamic simultaneous feedback of velocity and position)
• Combination of positioning and synchronization (i.e. cutting of constant flowing material)
5. Stepper motor control interface: command by pulse and direction signals
6. Sinusoidal commutation capabilities with encoder and hall sensors as feedback devices

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