Codificadores y transductores
Codifique y convierta magnitudes físicas a señales eléctricas o viceversa.
Bloques de Simscape
| Hall-Effect Rotary Encoder | Four-element Hall-effect rotary encoder |
| Incremental Shaft Encoder | Behavioral model that converts angular position to electrical pulses |
| Inductive Rotor Position Sensor | Inductive rotor position sensor with four inductive coils |
| Light-Emitting Diode | Exponential light-emitting diode with optical power output port |
| Peltier Device | Electrothermal cooler or thermoelectric generator |
| Photodiode | Photodiode with incident flux input port |
| Pressure Transducer | Pressure transducer that converts pressure measurement into voltage |
| PTC Thermistor | Positive temperature coefficient (PTC) thermistor |
| Resolver | Rotary transformer that measures angle of rotation |
| Strain Gauge | Deformation sensor |
| Thermistor | Negative temperature coefficient thermistor using B-parameter equation |
| Thermocouple | Sensor that converts thermal potential difference into electrical potential difference |
Temas
- Essential Electrical Modeling Techniques
Apply Simscape™ modeling rules when you build electronic, mechatronic, and electrical power system networks using Simscape Electrical™.
- Three-Phase Ports
Connect three-phase blocks using composite ports for three-phase lines or expanded ports for single-phase lines.
- Parameterizing Blocks from Datasheets
Overview of techniques used to specify block parameters to match the data from manufacturer datasheets.
Ejemplos destacados
Use of Peltier Device as Thermoelectric Cooler
A Peltier device working in cooling mode with a hot side temperature of 50 degC. In cooling mode, the Coefficient of Performance (COP) of the Peltier cell is equal to the total heat transferred through the Thermoelectric cooler (TEC) divided by the electric input power, COP = Qc/Pin.
Three-Phase PMSM Traction Drive
Control the rotor speed in a permanent magnet synchronous machine (PMSM) based electrical-traction drive. A high-voltage battery feeds the FEM-Parameterized PMSM block through a controlled three-phase converter. A Rotational Friction block provides the load. The position and speed information are obtained by using a high-fidelity resolver. The PMSM controller subsystem includes a cascade control structure which has an outer speed-control loop and two inner current-control loops. During the 0.25 seconds simulation, the rotor speed demand is ramped-up from 0 to 1000 rpm.
Cicloconvertidor de puente trifásico
Este ejemplo muestra un cicloconvertidor de puente trifásico. El cicloconvertidor consta de 36 tiristores y tiene la capacidad de reducir la frecuencia de la tensión de entrada. El subsistema Control implementa el control de tensión RMS del cicloconvertidor. También proporciona generación de pulsos para la activación de los tiristores. El subsistema Visualization contiene scopes que permiten ver los resultados de simulación. El tiempo de la simulación, t, es 1 segundo. La carga aumenta cuando Load1 se activa en la unidad de tiempo t = 0,75 segundos.
Microcontroller with GPIO, ADC and DAC Connections
Model the interface between a microcontroller unit (MCU) and a physical system. Here the microcontroller's GPIO, ADC and DAC connections are used to control a DC motor and connected load with limited angle travel. Load angle measurement is via a potentiometer sensor. This measurement is calibrated by initially ramping the rotor position until the photodiode detects the zero-angle light pulse from the LED. Once calibrated the MCU commands a 0.1Hz 45 degree amplitude sinusoid.
Flyback Converter
How a flyback converter can step-up a 5V DC source into a 15V DC regulated supply. The voltage is increased by creating a time-varying voltage across a transformer primary. The transformer steps up the voltage which is then rectified back to DC by the diode. Closed-loop control over the output voltage is effected by controlling the switching frequency on the primary side.
Strain Gauge and Wheatstone Bridge
How to model a strain gauge and measurement amplifier. The strain gauge forms one leg of a Wheatstone bridge, which is connected to a differential amplifier. A second op-amp is then used to both amplify and apply a low-pass filter to the measurement signal. The op-amps are modeled at a system level, with the user specifying parameters such as open-loop bandwidth, gain and maximum slew rate. In this circuit, the dynamics are primarily set by the low-pass filter. The op-amp bandwidth and maximum slew rate have little impact on the step response.
Thermistor-Controlled Fan
How fundamental thermal, mechanical and electrical components can be used to model a thermistor-controlled fan. The heat-generating device starts producing 2 watts at time zero, and then at 40 seconds this increases to 20 watts. The thermistor therefore heats up, and its resistance decreases thereby increasing the voltage across the PWM reference pins. This increases the PWM frequency which in turn increases average motor current, and the fan speeds up. The additional fan speed increases the convective cooling of the device, moderating the temperature increase of the device.
