Documentation

Speed / Position

This port is used to input the speed at which the Resolver rotates [rad/s]. By selecting Position in the mask dropdown, the input will switch its functionality to position input [rad]. The width of this input signal must be equal to the number of active channels defined in the Channel Vector parameter.

Gain

The gain represents the transfer ratio between the input and output windings of the resolver. The resolver emulation code module uses four single-ended analog outputs to generate quasi-differential signals: sin (+), sin (-), cos(+), and cos (-). The gain can be set independently for each output. This input expects a vector, which must contain 4 elements per active channel.

Offset

An independent DC offset voltage can be applied to each of the four resolver output signals: sin (+), sin (-), cos(+), and cos (-). This input expects a vector, which must contain 4 elements per active channel. Each element represents the offset for one of the four resolver output signals. The unit is [V].

Excitation Fault

The excitation input signal of the resolver emulation model is set to zero if this input goes to 1. The width of this input signal must be equal to the number of active channels defined in the Channel Vector parameter.

The width of each output signal is equal to the number of active channels defined in the Channel Vector parameter.

Resolver Angle

This port shows the angular position of the resolver [rad].

Rotor Angle

This port shows the angular position of the rotor [rad].

Overshoot Flag

The flags indicate an overshoot of the excitation signal and resolver output signals.

• Bit 0 indicates an overshoot of the sin and cos resolver output signals.

• Bit 1 indicates an overshoot of the excitation signal.

Configurable I/O Module ID

This parameter associates a code module block with a configurable I/O module setup block. Set this value to match the Module ID defined in the setup block of the required configurable I/O module.

Channel Vector

A vector of channels this driver block entity will access. You can specify channels in the range 1-N (N = the number of channels implemented in your specific configuration file defined in the Setup block). The width of this vector also defines the subsequent size of some of the following parameters if scalar expansion applies. With a single block, all the channels of the block are synchronized.

Sample Time

Defines the base sample time at which this driver block gets its sample hit. This parameter can also be set to -1 for inherited sample time. The units are in seconds.

Resolver Sample Time

The sample time at which the resolver module is triggered on the FPGA. The unit is [s].

Pole Pairs

The number of resolver pole pairs.

Resolver Angle Offset

Angular offset [degree] between the rotor zero position and the zero position at which the resolver is mounted.

Speed / Position Input

The functionality of the Speed / Position input is selected from this dropdown.

• Selecting Speed will rename the mask input to Speed. The input values will be considered as speed values in rad/s

• Selecting Position will rename the mask input to Position. The input values will be considered as position values in rad

Initial Position

The initial angular position of the Resolver in degrees. This parameter is only available if the Speed input has been selected in the dropdown. If Position is chosen, the initial position will be read from the mask input.

Use Internal Excitation Signal

If checked, the Resolver will use the internally generated excitation signal. The signal characteristics are defined with the Excitation Amplitude and Excitation Frequency parameters. These parameters are visible when the checkbox is selected.

Excitation Amplitude

Amplitude of internal excitation signal [V].

Excitation Frequency

Frequency of internal excitation signal [kHz].

Initial Gain

The gain represents the transfer ratio between the input and output windings of the resolver. The resolver emulation code module uses four single-ended analog outputs to generate quasi-differential signals: sin (+), sin (-), cos(+), and cos (-). The gain can be set independently for each output. This parameter expects a scalar value or a vector of 4 elements per active channel; for example, set the parameter to '[0.5, 0.5, 0.5, 0.5, 1, 1, 1, 1]' if you have two active resolver emulation channels. The first resolver will have a transfer ratio of 0.5 and the second one a transfer ratio of 1.

The Initial Gain applies a). when the model is initialized; and b). until the first model step, if the Gain input is active. If the Gain input is disabled, the Initial Gain applies during the entire model execution.

Initial Offset

An independent DC offset voltage can be applied to each of the four resolver output signals: sin (+), sin (-), cos(+), and cos (-). This parameter expects a scalar value or a vector of 4 elements per active channel containing the offset for each of the four resolver output signals. The unit is [V]. For example, set the parameter to '[2,2,2,2,1,1,1,1]' if you use two resolver emulation channels and you want an offset of 2 V for all the outputs of channel 1 and an offset of 1 V for all the outputs of channel 2.

The Initial Offset applies a). when the model is initialized; and b). until the first model step, if the Offset input is active. If the Offset input is disabled, the Initial Offset applies during the entire model execution.

Phase Delay [Degree]

Phase delay between the excitation input signal and the modulated sine and cosine outputs.

Phase Delay[FPGA Model Sample Steps]

Number of resolver model sample steps for which the excitation signal is delayed. This parameter is automatically computed and shown by the driver block based on the defined phase delay in degrees.

Show Offset Input

When this parameter is set, the Offset input is shown.

Show Gain Input

When this parameter is set, the Gain input is shown.

Show Excitation Fault Input

When this parameter is set, the Excitation Fault input is shown.

Show Overshoot Flag Output

When this parameter is set, the Overshoot Flag output is shown.

Show Rotation Angle Output

When this parameter is set, the Rotation Angle output is shown.

Show Resolver Angle Output

When this parameter is set, the Resolver Angle output is shown.