SuperFlow AutoDyn, Руководство оператора

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Control Modes
11-6 AutoDyn Chassis Dynamometer Operator Manual
The handheld controls allow continuous adjustment of
the set point. Three sensitivity selections are available for
each control mode (fine, medium, coarse). The sensitivity
selection determines how many button pushes (or turns
of the encoder knob on a wireless handheld) are required
for a given set point change. The selection from coarse to
medium changes the encoder sensitivity by a factor of 2.
A change from coarse to fine changes the controller
sensitivity by a factor of 10.
Figure 11-1. Handheld Controller
Example:
If the total control output range is 0–100, then each click stop on the encoder will change the set
point output as a function of sensitivity selection:
11.4 PID Control Setup
The WinDyn control system requires operator interaction in two separate portions of the software.
First you must assign and define the desired control channels in the WinDyn Configuration file
(CFA). Then tune PID using the operator control console or handheld interface.
Current hardware limits the number of closed-loop control outputs to two controllers. Each
controller is given a name in the configuration file. Typically, names such as Load, Servo, Dyno, or
Throttle are used. However, you can change the name through the WinDyn Configuration file
(CFA). Typically, if Load or Servo is selected, the dynamometer load will control vehicle speed or
torque. If Throttle is selected, the engine throttle controls vehicle speed or torque. However, the
naming of the controller in the software is arbitrary, so misnaming is very possible.
Each controller can be assigned up to five control channels. Any measured or calculated channel
may be assigned as a control channel through the Configuration file (CFA). Typically, on chassis
dynamometers, dyno speed in mph and a calculated wheel torque is used. On an engine dyno,
engine speed in rpm and measured engine torque is used. After assigning a channel, you must
allocate minimum and maximum values to the channel to enable the control outputs.
Table 11-1.
Control Step Values
Control
Mode
Range Coarse Medium Fine
Manual 100% 10% 5% 1%
VehSpd 200 mph 10 mph 5 mph 1 mph
VehTrq
2500
lb•ft 100 lb•ft 50 lb•ftt 10 lb•ft