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control algorithm design -凯发k8网页登录

create controller algorithm for motor control system

create the torque-control and speed-control subsystems, verify the target execution time, and tune the control gains.

note

the blocks listed here are compliant with the misra c™ guidelines.

blocks

controls

control reference

	compute reference currents for field-oriented control of induction motor
	decouple d-axis and q-axis current to eliminate disturbance
	calculate slip speed of ac induction motor
	estimate electromechanical torque and power
	saturate voltages (or current) in the dq reference frame
	compute reference currents for maximum torque per ampere (mtpa) and field-weakening operation
	decouple d-axis and q-axis current to eliminate disturbance
	estimate electromechanical torque and power
	generate position ramp of fixed frequency
	generate switching sequence for six-step commutation of brushless dc (bldc) motor
	compute d and q axis components of reference vector
	generate lookup-table-based control reference currents for field-oriented control of permanent magnet synchronous motor
	generate switching sequences for n-phase switched reluctance motor (srm)

controllers

	compute derating factor
	discrete-time pid controller
field oriented control autotuner	automatically and sequentially tune multiple pid control loops in field-oriented control application

math transforms

	generate balanced three-phase sinusoidal signals
	compute four-quadrant arctangent
	implement ab to αβ transformation
	implement αβ to abc transformation
	implement dq to αβ transformation
	implement αβ to dq transformation
	implement sine and cosine functions using lookup table approach
	generate modulated signals from phase voltages

protection and diagnostics

	implement protection relay with definite minimum time (dmt) trip characteristics
	configure host-side serial communications interface to receive data from serial port
	configure communication ports used by host serial receive and host serial transmit blocks
	configure host-side serial communications interface to transmit data to serial port

sensor decoders

	compute speed and estimate position of rotor by using hall sensors
	compute rotor spin direction and validity of hall sensor sequence
	compute electrical position of rotor from mechanical position
	compute position of quadrature encoder
	compute motor mechanical position and speed as well as sine and cosine values of motor electrical position
	output true until counter reaches maximum count limit
	compute speed from rotor angular position

sensorless estimators

	compute electrical position and mechanical speed of a surface-mount pmsm
	compute electrical position, magnetic flux, and electrical torque of rotor
	estimate initial rotor electrical position of interior pmsm using pulsating high frequency (phf) injection
	compute electrical position and mechanical speed of permanent magnet synchronous motor (pmsm)

signal management

	implement infinite impulse response (iir) filter
	plot vectors in space domain
	compensate for position offset due to different types of delays

topics

design and integrate the torque-control and speed-control subsystems.
- step 1:
- step 2:
- step 3:
- step 4:
- step 5:
estimate control gains and use utility functions
perform control parameter tuning for speed and torque control subsystems.
this example explains pil profiling on texas instruments™ launchxl-f28379d hardware board.