Gyro

Dynamic model of the MEMS gyroscope.

blockType: AcausalElectricPowerSystems.Sensors.Gyro

Path in the library:

/Physical Modeling/Electrical/Sensors & Transducers/Gyro

Description

Block Gyro Implements a dynamic model of a microelectromechanical systems gyroscope (MEMS). The gyroscope outputs an output voltage proportional to the angular velocity applied to the R port. The output voltage is limited by the maximum and minimum output voltage values you set.

If desired, you can simulate the dynamics of the sensor by setting the parameter Dynamics meaning Model sensor bandwidth. Turning on the speaker adds a first-order delay between the angular velocity displayed on the R port and the corresponding voltage applied to the + and − ports.

When running simulations using a fixed-step solver or when generating code for software and hardware testing, it is recommended to set the parameter Dynamics meaning No dynamics - Situable for HIL because this avoids the need to use a small step in simulation time at high sensor throughput.

Ports

Conserving

# R — rotary port
mechanics

Details

A non-directional port connected to the gyroscope’s rotational port.

Program usage name

rotational_flange

# + — positive port
electricity

Details

A non-directional electrical port connected to the positive terminal of the gyroscope.

Program usage name

p

# − — negative port
electricity

Details

A non-directional electrical port connected to the negative terminal of the gyroscope.

Program usage name

n

Parameters

# Sensitivity — sensitivity
V/rpm | V/(rad/s) | mV/(deg/s)

Details

The change in the output voltage level per unit of rotation speed change when the output signal is not limited.

Units	`V/rpm` \| `V/(rad/s)` \| `mV/(deg/s)`
Default value	`12.5 mV/(deg/s)`
Program usage name	`sensitivity`
Evaluatable	Yes

# Output voltage for zero rotation — output voltage at zero rotation
V | uV | mV | kV | MV

Details

The output voltage of the sensor at zero rotation speed.

Units	`V` \| `uV` \| `mV` \| `kV` \| `MV`
Default value	`2.5 V`
Program usage name	`V_zero`
Evaluatable	Yes

# Maximum output voltage — Maximum output voltage
V | uV | mV | kV | MV

Details

The maximum output voltage of the sensor, which determines the maximum rotational speed measured by the sensor.

Units	`V` \| `uV` \| `mV` \| `kV` \| `MV`
Default value	`4.0 V`
Program usage name	`V_max`
Evaluatable	Yes

# Minimum output voltage — Minimum output voltage
V | uV | mV | kV | MV

Details

The minimum output voltage of the sensor, which determines the minimum rotational speed measured by the sensor.

Units	`V` \| `uV` \| `mV` \| `kV` \| `MV`
Default value	`1.0 V`
Program usage name	`V_min`
Evaluatable	Yes

# Dynamics — a variant of dynamics modeling
No dynamics - Situable for HIL | Model sensor bandwidth

Details

Select one of the following options for modeling sensor dynamics:

No dynamics - Situable for HIL – do not simulate sensor dynamics. Use this value when running a simulation with a fixed step or when generating code for software and hardware testing, since this avoids the need for a small simulation step with high sensor throughput. This value is used by default.
Model sensor bandwidth – simulate the dynamics of the sensor using a first-order delay approximation based on the parameter value Bandwidth. You can control the initial delay condition by specifying the target value of the variable Measured angular rate.

Values	`No dynamics - Situable for HIL` \| `Model sensor bandwidth`
Default value	`No dynamics - Situable for HIL`
Program usage name	`dynamics_model`
Evaluatable	Yes

# Bandwidth — bandwidth
Hz | kHz | MHz | GHz

Details

Defines the bandwidth by level 3 dB for the measured rotational speed, assuming a first-order time constant.

Dependencies

To use this parameter, set for the parameter Dynamics value Model sensor bandwidth.

Units	`Hz` \| `kHz` \| `MHz` \| `GHz`
Default value	`3.0 kHz`
Program usage name	`bandwidth`
Evaluatable	Yes