AMT Controller

Automated manual transmission controller with clutch open, close, and synchronization timing

Library:
Powertrain Blockset / Transmission / Transmission Controllers

Description

The AMT Controller block implements an automated manual transmission (AMT) controller. You can specify the clutch open, close, and synchronization timing parameters. The block determines the clutch commands using integrator-based timers and latching logic that is based on the specified timing parameters and gear request.

Ports

Inputs

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`GearReq` — Gear number to engage
`scalar`

Gear number request, G_req.

Output

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`Info` — Bus signal
bus

Bus signal containing these block calculations.

Signal	Description	Variable
`GearReq`	Gear number request	G_req
`GearEngd`	Nominal gear commanded by the controller	G_o
`Cltch`	Clutch pressure command for gears, between `0` and `1`	NA

`GearEffct` — Effective gear for shifting
`scalar`

Effective gear for shifting. The block uses this signal for the smooth application of inertial, efficiency, gear ratio, and damping parameters.

`Cltch` — Command for clutch pressure
`scalar`

Clutch pressure command, between 0 and 1.

Parameters

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`Initial gear, G_o` — Engaged gear
`0` (default) | `scalar`

Initial gear to engage, G_o.

`Clutch actuation time, tc` — Time
`.1` (default) | `scalar`

Time required to engage and disengage the clutch during shift events, t_c, in s.

`Synchronizer time, ts` — Time
`.01` (default) | `scalar`

Time required for gear selection and synchronization, t_s, in s.

`Sample period, dt` — Time
`-1` (default) | `scalar`

Sample period, dt, in s.

`Clutch initially locked` — Select to initially lock clutch
`off` (default) | `on`

Selecting this parameter initially locks the clutch.

`Synchronizer initially locked` — Select to initially lock synchronizer
`off` (default) | `on`

Selecting this parameter initially locks the synchronizer.

Model Examples

Conventional Vehicle Reference Application

Simulate a full vehicle model with an internal combustion engine, transmission, and associated powertrain control algorithms. Use for powertrain matching analysis and component selection, control and diagnostic algorithm design, and hardware-in-the-loop (HIL) testing.