SIMULINK的模块库介绍
(1)Commonly Used
Bus Creator Bus Selector Constant Data Type Conversion Demux Discrete-Time Integrator Gain Ground Inport Integrator,Integrator Limited Logical Operator Mux Outport Product Relational Operator Saturation Create signal bus Select signals from incoming bus Generate constant value Convert input signal to specified data type Extract and output elements of vector signal Perform discrete-time integration or accumulation of signal Multiply input by constant Ground unconnected input port Create input port for subsystem or external input Integrate signal Perform specified logical operation on input Combine several input signals into vector Create output port for subsystem or external output Multiply and divide scalars and nonscalars or multiply and invert matrices Perform specified relational operation on inputs Limit range of signal Scope and Floating Display signals generated during simulation Scope Subsystem,Atomic Subsystem,Nonvirtual Represent system within another system Subsystem,CodeReuse Subsystem Sum,Add,Subtract,Sum of Elements Switch Terminator Unit Delay Add or subtract inputs Switch output between first input and third input based on value of second input Terminate unconnected output port Delay signal one sample period (2)Continuous
Derivative Integrator,Integrator Limited PID Controller PID DOF) Output time derivative of input Integrate signal Simulate continuous-or discrete-time PID controllers Controller(2 Simulate continuous-or discrete-time two-degree-of-freedom PID controllers Integrate input signal twice Implement linear state-space system Model linear system by transfer function Delay input by given amount of time Second-Order Integrator,Second-Order Integrator Limited State-Space Transfer Fcn Transport Delay Variable Time Delay input by variable amount of time Delay,Variable Transport Delay Zero-Pole Model system by zero-pole-gain transfer function (3)Discontinuities
Backlash Model behavior of system with play Coulomb and Viscous Model discontinuity at zero,with linear gain elsewhere Friction Dead Zone Dead Zone Dynamic Hit Crossing Quantizer Rate Limiter Relay Saturation Saturation Dynamic Wrap To Zero Provide region of zero output Set inputs within bounds to zero Detect crossing point Discretize input at specified interval Limit rate of change of signal Switch output between two constants Limit range of signal Bound range of input Set output to zero if input is above threshold Rate Limiter Dynamic Limit rising and falling rates of signal (4)Discrete
Difference Discrete Derivative Discrete Filter Discrete FIR Filter Discrete State-Space Discrete Transfer Fcn Discrete Zero-Pole Discrete-Time Integrator First-Order Hold Integer Delay Memory PID Controller PID DOF) Calculate change in signal over one time step Compute discrete time derivative Model Infinite Impulse Response(IIR)direct form II filters Model FIR filters Implement discrete state-space system Implement discrete transfer function Model system defined by zeros and poles of discrete transfer function Perform discrete-time integration or accumulation of signal Implement first-order sample-and-hold Delay signal N sample periods Output input from previous time step Simulate continuous-or discrete-time PID controllers Controller(2 Simulate continuous-or discrete-time two-degree-of-freedom PID controllers Delay scalar signal multiple sample periods and output all delayed versions Tapped Delay Transfer Fcn First Implement discrete-time first order transfer function Order Transfer Fcn Lead or Implement discrete-time lead or lag compensator Lag Transfer Zero Unit Delay Zero-Order Hold Fcn Real Implement discrete-time transfer function that has real zero and no pole Delay signal one sample period Implement zero-order hold of one sample period (5)Logic and Operations Bit
Bit Clear Bit Set Bitwise Operator Combinatorial Logic Compare To Constant Compare To Zero Detect Change Detect Decrease Detect Fall Negative Detect Nonpositive Detect Increase Detect Nonnegative Set specified bit of stored integer to zero Set specified bit of stored integer to one Specified bitwise operation on inputs Implement truth table Determine how signal compares to specified constant Determine how signal compares to zero Detect change in signal value Detect decrease in signal value Detect falling edge when signal value decreases to strictly negative value,and its previous value was nonnegative Fall Detect falling edge when signal value decreases to nonpositive value,and its previous value was strictly positive Detect increase in signal value Rise Detect rising edge when signal value increases to nonnegative value,and its previous value was strictly negative Detect rising edge when signal value increases to strictly positive value,and its previous value was nonpositive Output selection of contiguous bits from input signal Determine if signal is in specified interval Determine if signal is in specified interval Perform specified logical operation on input Perform specified relational operation on inputs Shift bits or binary point of signal Detect Rise Positive Extract Bits Interval Test Interval Test Dynamic Logical Operator Relational Operator Shift Arithmetic