Speed Control

Position

Estimation

Vector Engine (VE)

Current Control

Sampling Timing Calculation

dq

UVW Conversion

Output Interfacing

Input Interfacing

UVW

dq Conversion

Software

Hardware

Programmable Motor Driver

(PMD)

Output PWM Gen.

Sampling Trigger Gen.

12-Bit ADC

Sampling Control

Current Detection Unit

Inverter

Motor

Schedule #1

Schedule #4

Schedule #9

Single Task & Schedule #1

Schedule #1

Single Task Execution

Current

Control (PI)

SIN/COS

Calculations

Coordinate

Transform

dq

Phase

Transform

2

3

Output

Trigger

Control

Input

Phase

Transform

3

2

SIN/COS

Calculations

Coordinate

Transform

dq

Task Selection

Task Selection

PWM Freq. Adjustment

Interrupt

Interrupt

Interrupt

Interrupt

PMD

ADC

PMD

ADC

PMD

ADC

Data Set

Trigger

Data Set

Trigger

PMD

ADC

Data Set

Trigger

Trigger

Start

Interrupt

Start

Interrupt

Schedule #1

Start

Data

Set

Phase

Transform

2

3

Coordinate

Transform

dq

Output

Trigger

Control

Input

Phase

Transform

3

2

Trigger

Control

Output

Input

Phase

Transform

2

3

Output

Trigger

Control

Input

Phase

Transform

3

2

Coordinate

Transform

dq

Coordinate

Transform

dq

Coordinate

Transform

dq

The vector engine is a dedicated hardware unit designed to perform various operations for motor vector control. Since the vector

engine has the capability for performing basic vector control operations (such as coordinate transformations, phase

transformations and sine/cosine calculations), a PI algorithm for current control, and PMD and high-speed ADC interface

operations, it helps to reduce the software workload significantly.

High-efficiency motor control, reducing the CPU workload

Since the requirements for speed control and position estimation differ greatly among individual applications and users, they can

be implemented via software. The vector engine provides great flexibility in allowing you to create various schedules that define a

combined sequence of VE and user’s software operations to perform. The vector engine supports two operating modes:

Scheduled mode that executes a series of operations consecutively and Single Task mode that executes individual tasks one by

one. Schedules can select a task that causes the vector engine to start execution.

Highly flexible hardware

Features of the Vector Engine (VE)

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